* [PATCH v2 0/9] refcount: Improve code-gen
@ 2021-12-10 16:16 Peter Zijlstra
2021-12-10 16:16 ` [PATCH v2 1/9] atomic: Prepare scripts for macro ops Peter Zijlstra
` (11 more replies)
0 siblings, 12 replies; 34+ messages in thread
From: Peter Zijlstra @ 2021-12-10 16:16 UTC (permalink / raw)
To: will, boqun.feng
Cc: linux-kernel, x86, peterz, mark.rutland, elver, keescook, hch,
torvalds, axboe
Hi,
Now with Linus' favourite refcount scheme on :-)
Changes since RFC:
- more cleanups in scripts/atomic/
- rename atomic_*_ofl() to atomic_*_overflow() (null)
- alternative x86 refcount scheme (Linus)
- fix for refcount_dec_not_one()
- opt __refcount_add_not_zero(.i=1)
Boots x86_64 and builds a kernel.
^ permalink raw reply [flat|nested] 34+ messages in thread
* [PATCH v2 1/9] atomic: Prepare scripts for macro ops
2021-12-10 16:16 [PATCH v2 0/9] refcount: Improve code-gen Peter Zijlstra
@ 2021-12-10 16:16 ` Peter Zijlstra
2021-12-10 17:27 ` Mark Rutland
2021-12-10 17:43 ` Marco Elver
2021-12-10 16:16 ` [PATCH v2 2/9] atomic: Add xchg.tbl Peter Zijlstra
` (10 subsequent siblings)
11 siblings, 2 replies; 34+ messages in thread
From: Peter Zijlstra @ 2021-12-10 16:16 UTC (permalink / raw)
To: will, boqun.feng
Cc: linux-kernel, x86, peterz, mark.rutland, elver, keescook, hch,
torvalds, axboe
Due to the limited usability of the GCC 'Labels as Values' extention,
specifically it refuses to have a goto in an __always_inline function,
even with a compile time constant label pointer, some new atomic ops
will need to be introduced as macros.
The xchg/cmpxchg family is already macros so extend that code to the
regular atomic ops.
Specifically introduce meta-'M', meta-'m' and meta-'n' to signify the
op is a macro and add arg-'L', arg-'V' and arg-'P' for Label, VarArg
and Pair arguments respectively.
This unconvered some latent bugs in the instrumentation wrappery,
specifically the try_cmpxchg() @oldp argument was instrumented as an
atomic_read_write, while it's a regular read_write and many of the
gen_xchg() ops had atomic_write instrumentation while
atomic_read_write seems more appropriate.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
---
include/linux/atomic/atomic-instrumented.h | 78 +++++++--------
scripts/atomic/atomic-tbl.sh | 8 +
scripts/atomic/atomics.tbl | 5 +
scripts/atomic/gen-atomic-fallback.sh | 4
scripts/atomic/gen-atomic-instrumented.sh | 142 +++++++++++++++++++----------
scripts/atomic/gen-atomic-long.sh | 32 +++++-
6 files changed, 177 insertions(+), 92 deletions(-)
--- a/include/linux/atomic/atomic-instrumented.h
+++ b/include/linux/atomic/atomic-instrumented.h
@@ -501,7 +501,7 @@ static __always_inline bool
atomic_try_cmpxchg(atomic_t *v, int *old, int new)
{
instrument_atomic_read_write(v, sizeof(*v));
- instrument_atomic_read_write(old, sizeof(*old));
+ instrument_read_write(old, sizeof(*old));
return arch_atomic_try_cmpxchg(v, old, new);
}
@@ -509,7 +509,7 @@ static __always_inline bool
atomic_try_cmpxchg_acquire(atomic_t *v, int *old, int new)
{
instrument_atomic_read_write(v, sizeof(*v));
- instrument_atomic_read_write(old, sizeof(*old));
+ instrument_read_write(old, sizeof(*old));
return arch_atomic_try_cmpxchg_acquire(v, old, new);
}
@@ -517,7 +517,7 @@ static __always_inline bool
atomic_try_cmpxchg_release(atomic_t *v, int *old, int new)
{
instrument_atomic_read_write(v, sizeof(*v));
- instrument_atomic_read_write(old, sizeof(*old));
+ instrument_read_write(old, sizeof(*old));
return arch_atomic_try_cmpxchg_release(v, old, new);
}
@@ -525,7 +525,7 @@ static __always_inline bool
atomic_try_cmpxchg_relaxed(atomic_t *v, int *old, int new)
{
instrument_atomic_read_write(v, sizeof(*v));
- instrument_atomic_read_write(old, sizeof(*old));
+ instrument_read_write(old, sizeof(*old));
return arch_atomic_try_cmpxchg_relaxed(v, old, new);
}
@@ -1079,7 +1079,7 @@ static __always_inline bool
atomic64_try_cmpxchg(atomic64_t *v, s64 *old, s64 new)
{
instrument_atomic_read_write(v, sizeof(*v));
- instrument_atomic_read_write(old, sizeof(*old));
+ instrument_read_write(old, sizeof(*old));
return arch_atomic64_try_cmpxchg(v, old, new);
}
@@ -1087,7 +1087,7 @@ static __always_inline bool
atomic64_try_cmpxchg_acquire(atomic64_t *v, s64 *old, s64 new)
{
instrument_atomic_read_write(v, sizeof(*v));
- instrument_atomic_read_write(old, sizeof(*old));
+ instrument_read_write(old, sizeof(*old));
return arch_atomic64_try_cmpxchg_acquire(v, old, new);
}
@@ -1095,7 +1095,7 @@ static __always_inline bool
atomic64_try_cmpxchg_release(atomic64_t *v, s64 *old, s64 new)
{
instrument_atomic_read_write(v, sizeof(*v));
- instrument_atomic_read_write(old, sizeof(*old));
+ instrument_read_write(old, sizeof(*old));
return arch_atomic64_try_cmpxchg_release(v, old, new);
}
@@ -1103,7 +1103,7 @@ static __always_inline bool
atomic64_try_cmpxchg_relaxed(atomic64_t *v, s64 *old, s64 new)
{
instrument_atomic_read_write(v, sizeof(*v));
- instrument_atomic_read_write(old, sizeof(*old));
+ instrument_read_write(old, sizeof(*old));
return arch_atomic64_try_cmpxchg_relaxed(v, old, new);
}
@@ -1657,7 +1657,7 @@ static __always_inline bool
atomic_long_try_cmpxchg(atomic_long_t *v, long *old, long new)
{
instrument_atomic_read_write(v, sizeof(*v));
- instrument_atomic_read_write(old, sizeof(*old));
+ instrument_read_write(old, sizeof(*old));
return arch_atomic_long_try_cmpxchg(v, old, new);
}
@@ -1665,7 +1665,7 @@ static __always_inline bool
atomic_long_try_cmpxchg_acquire(atomic_long_t *v, long *old, long new)
{
instrument_atomic_read_write(v, sizeof(*v));
- instrument_atomic_read_write(old, sizeof(*old));
+ instrument_read_write(old, sizeof(*old));
return arch_atomic_long_try_cmpxchg_acquire(v, old, new);
}
@@ -1673,7 +1673,7 @@ static __always_inline bool
atomic_long_try_cmpxchg_release(atomic_long_t *v, long *old, long new)
{
instrument_atomic_read_write(v, sizeof(*v));
- instrument_atomic_read_write(old, sizeof(*old));
+ instrument_read_write(old, sizeof(*old));
return arch_atomic_long_try_cmpxchg_release(v, old, new);
}
@@ -1681,7 +1681,7 @@ static __always_inline bool
atomic_long_try_cmpxchg_relaxed(atomic_long_t *v, long *old, long new)
{
instrument_atomic_read_write(v, sizeof(*v));
- instrument_atomic_read_write(old, sizeof(*old));
+ instrument_read_write(old, sizeof(*old));
return arch_atomic_long_try_cmpxchg_relaxed(v, old, new);
}
@@ -1758,84 +1758,84 @@ atomic_long_dec_if_positive(atomic_long_
#define xchg(ptr, ...) \
({ \
typeof(ptr) __ai_ptr = (ptr); \
- instrument_atomic_write(__ai_ptr, sizeof(*__ai_ptr)); \
+ instrument_atomic_read_write(__ai_ptr, sizeof(*__ai_ptr)); \
arch_xchg(__ai_ptr, __VA_ARGS__); \
})
#define xchg_acquire(ptr, ...) \
({ \
typeof(ptr) __ai_ptr = (ptr); \
- instrument_atomic_write(__ai_ptr, sizeof(*__ai_ptr)); \
+ instrument_atomic_read_write(__ai_ptr, sizeof(*__ai_ptr)); \
arch_xchg_acquire(__ai_ptr, __VA_ARGS__); \
})
#define xchg_release(ptr, ...) \
({ \
typeof(ptr) __ai_ptr = (ptr); \
- instrument_atomic_write(__ai_ptr, sizeof(*__ai_ptr)); \
+ instrument_atomic_read_write(__ai_ptr, sizeof(*__ai_ptr)); \
arch_xchg_release(__ai_ptr, __VA_ARGS__); \
})
#define xchg_relaxed(ptr, ...) \
({ \
typeof(ptr) __ai_ptr = (ptr); \
- instrument_atomic_write(__ai_ptr, sizeof(*__ai_ptr)); \
+ instrument_atomic_read_write(__ai_ptr, sizeof(*__ai_ptr)); \
arch_xchg_relaxed(__ai_ptr, __VA_ARGS__); \
})
#define cmpxchg(ptr, ...) \
({ \
typeof(ptr) __ai_ptr = (ptr); \
- instrument_atomic_write(__ai_ptr, sizeof(*__ai_ptr)); \
+ instrument_atomic_read_write(__ai_ptr, sizeof(*__ai_ptr)); \
arch_cmpxchg(__ai_ptr, __VA_ARGS__); \
})
#define cmpxchg_acquire(ptr, ...) \
({ \
typeof(ptr) __ai_ptr = (ptr); \
- instrument_atomic_write(__ai_ptr, sizeof(*__ai_ptr)); \
+ instrument_atomic_read_write(__ai_ptr, sizeof(*__ai_ptr)); \
arch_cmpxchg_acquire(__ai_ptr, __VA_ARGS__); \
})
#define cmpxchg_release(ptr, ...) \
({ \
typeof(ptr) __ai_ptr = (ptr); \
- instrument_atomic_write(__ai_ptr, sizeof(*__ai_ptr)); \
+ instrument_atomic_read_write(__ai_ptr, sizeof(*__ai_ptr)); \
arch_cmpxchg_release(__ai_ptr, __VA_ARGS__); \
})
#define cmpxchg_relaxed(ptr, ...) \
({ \
typeof(ptr) __ai_ptr = (ptr); \
- instrument_atomic_write(__ai_ptr, sizeof(*__ai_ptr)); \
+ instrument_atomic_read_write(__ai_ptr, sizeof(*__ai_ptr)); \
arch_cmpxchg_relaxed(__ai_ptr, __VA_ARGS__); \
})
#define cmpxchg64(ptr, ...) \
({ \
typeof(ptr) __ai_ptr = (ptr); \
- instrument_atomic_write(__ai_ptr, sizeof(*__ai_ptr)); \
+ instrument_atomic_read_write(__ai_ptr, sizeof(*__ai_ptr)); \
arch_cmpxchg64(__ai_ptr, __VA_ARGS__); \
})
#define cmpxchg64_acquire(ptr, ...) \
({ \
typeof(ptr) __ai_ptr = (ptr); \
- instrument_atomic_write(__ai_ptr, sizeof(*__ai_ptr)); \
+ instrument_atomic_read_write(__ai_ptr, sizeof(*__ai_ptr)); \
arch_cmpxchg64_acquire(__ai_ptr, __VA_ARGS__); \
})
#define cmpxchg64_release(ptr, ...) \
({ \
typeof(ptr) __ai_ptr = (ptr); \
- instrument_atomic_write(__ai_ptr, sizeof(*__ai_ptr)); \
+ instrument_atomic_read_write(__ai_ptr, sizeof(*__ai_ptr)); \
arch_cmpxchg64_release(__ai_ptr, __VA_ARGS__); \
})
#define cmpxchg64_relaxed(ptr, ...) \
({ \
typeof(ptr) __ai_ptr = (ptr); \
- instrument_atomic_write(__ai_ptr, sizeof(*__ai_ptr)); \
+ instrument_atomic_read_write(__ai_ptr, sizeof(*__ai_ptr)); \
arch_cmpxchg64_relaxed(__ai_ptr, __VA_ARGS__); \
})
@@ -1843,8 +1843,8 @@ atomic_long_dec_if_positive(atomic_long_
({ \
typeof(ptr) __ai_ptr = (ptr); \
typeof(oldp) __ai_oldp = (oldp); \
- instrument_atomic_write(__ai_ptr, sizeof(*__ai_ptr)); \
- instrument_atomic_write(__ai_oldp, sizeof(*__ai_oldp)); \
+ instrument_atomic_read_write(__ai_ptr, sizeof(*__ai_ptr)); \
+ instrument_read_write(__ai_oldp, sizeof(*__ai_oldp)); \
arch_try_cmpxchg(__ai_ptr, __ai_oldp, __VA_ARGS__); \
})
@@ -1852,8 +1852,8 @@ atomic_long_dec_if_positive(atomic_long_
({ \
typeof(ptr) __ai_ptr = (ptr); \
typeof(oldp) __ai_oldp = (oldp); \
- instrument_atomic_write(__ai_ptr, sizeof(*__ai_ptr)); \
- instrument_atomic_write(__ai_oldp, sizeof(*__ai_oldp)); \
+ instrument_atomic_read_write(__ai_ptr, sizeof(*__ai_ptr)); \
+ instrument_read_write(__ai_oldp, sizeof(*__ai_oldp)); \
arch_try_cmpxchg_acquire(__ai_ptr, __ai_oldp, __VA_ARGS__); \
})
@@ -1861,8 +1861,8 @@ atomic_long_dec_if_positive(atomic_long_
({ \
typeof(ptr) __ai_ptr = (ptr); \
typeof(oldp) __ai_oldp = (oldp); \
- instrument_atomic_write(__ai_ptr, sizeof(*__ai_ptr)); \
- instrument_atomic_write(__ai_oldp, sizeof(*__ai_oldp)); \
+ instrument_atomic_read_write(__ai_ptr, sizeof(*__ai_ptr)); \
+ instrument_read_write(__ai_oldp, sizeof(*__ai_oldp)); \
arch_try_cmpxchg_release(__ai_ptr, __ai_oldp, __VA_ARGS__); \
})
@@ -1870,46 +1870,46 @@ atomic_long_dec_if_positive(atomic_long_
({ \
typeof(ptr) __ai_ptr = (ptr); \
typeof(oldp) __ai_oldp = (oldp); \
- instrument_atomic_write(__ai_ptr, sizeof(*__ai_ptr)); \
- instrument_atomic_write(__ai_oldp, sizeof(*__ai_oldp)); \
+ instrument_atomic_read_write(__ai_ptr, sizeof(*__ai_ptr)); \
+ instrument_read_write(__ai_oldp, sizeof(*__ai_oldp)); \
arch_try_cmpxchg_relaxed(__ai_ptr, __ai_oldp, __VA_ARGS__); \
})
#define cmpxchg_local(ptr, ...) \
({ \
typeof(ptr) __ai_ptr = (ptr); \
- instrument_atomic_write(__ai_ptr, sizeof(*__ai_ptr)); \
+ instrument_atomic_read_write(__ai_ptr, sizeof(*__ai_ptr)); \
arch_cmpxchg_local(__ai_ptr, __VA_ARGS__); \
})
#define cmpxchg64_local(ptr, ...) \
({ \
typeof(ptr) __ai_ptr = (ptr); \
- instrument_atomic_write(__ai_ptr, sizeof(*__ai_ptr)); \
+ instrument_atomic_read_write(__ai_ptr, sizeof(*__ai_ptr)); \
arch_cmpxchg64_local(__ai_ptr, __VA_ARGS__); \
})
#define sync_cmpxchg(ptr, ...) \
({ \
typeof(ptr) __ai_ptr = (ptr); \
- instrument_atomic_write(__ai_ptr, sizeof(*__ai_ptr)); \
+ instrument_atomic_read_write(__ai_ptr, sizeof(*__ai_ptr)); \
arch_sync_cmpxchg(__ai_ptr, __VA_ARGS__); \
})
#define cmpxchg_double(ptr, ...) \
({ \
typeof(ptr) __ai_ptr = (ptr); \
- instrument_atomic_write(__ai_ptr, 2 * sizeof(*__ai_ptr)); \
+ instrument_atomic_read_write(__ai_ptr, 2 * sizeof(*__ai_ptr)); \
arch_cmpxchg_double(__ai_ptr, __VA_ARGS__); \
})
-
#define cmpxchg_double_local(ptr, ...) \
({ \
typeof(ptr) __ai_ptr = (ptr); \
- instrument_atomic_write(__ai_ptr, 2 * sizeof(*__ai_ptr)); \
+ instrument_atomic_read_write(__ai_ptr, 2 * sizeof(*__ai_ptr)); \
arch_cmpxchg_double_local(__ai_ptr, __VA_ARGS__); \
})
+
#endif /* _LINUX_ATOMIC_INSTRUMENTED_H */
-// 2a9553f0a9d5619f19151092df5cabbbf16ce835
+// 66cdf9a0e0a995cba29c61baf018f7ef35974ae5
--- a/scripts/atomic/atomic-tbl.sh
+++ b/scripts/atomic/atomic-tbl.sh
@@ -15,7 +15,7 @@ meta_in()
#meta_has_ret(meta)
meta_has_ret()
{
- meta_in "$1" "bBiIfFlR"
+ meta_in "$1" "bBiIfFlRm"
}
#meta_has_acquire(meta)
@@ -36,6 +36,12 @@ meta_has_relaxed()
meta_in "$1" "BFIR"
}
+#meta_has_macro(meta)
+meta_has_macro()
+{
+ meta_in "$1" "mn"
+}
+
#find_fallback_template(pfx, name, sfx, order)
find_fallback_template()
{
--- a/scripts/atomic/atomics.tbl
+++ b/scripts/atomic/atomics.tbl
@@ -10,12 +10,17 @@
# * F/f - fetch: returns base type (has fetch_ variants)
# * l - load: returns base type (has _acquire order variant)
# * s - store: returns void (has _release order variant)
+# * m - macro: with return value
+# * n - macro: with No return value
#
# Where args contains list of type[:name], where type is:
# * cv - const pointer to atomic base type (atomic_t/atomic64_t/atomic_long_t)
# * v - pointer to atomic base type (atomic_t/atomic64_t/atomic_long_t)
+# * P - pointer to pair of atomic base type
# * i - base type (int/s64/long)
# * p - pointer to base type (int/s64/long)
+# * L - label for exception case
+# * V:... - vararg
#
read l cv
set s v i
--- a/scripts/atomic/gen-atomic-fallback.sh
+++ b/scripts/atomic/gen-atomic-fallback.sh
@@ -27,7 +27,9 @@ gen_template_fallback()
if [ ! -z "${template}" ]; then
printf "#ifndef ${atomicname}\n"
. ${template}
- printf "#define ${atomicname} ${atomicname}\n"
+ if ! meta_has_macro "${meta}"; then
+ printf "#define ${atomicname} ${atomicname}\n"
+ fi
printf "#endif\n\n"
fi
}
--- a/scripts/atomic/gen-atomic-instrumented.sh
+++ b/scripts/atomic/gen-atomic-instrumented.sh
@@ -13,9 +13,15 @@ gen_param_check()
local type="${arg%%:*}"
local name="$(gen_param_name "${arg}")"
local rw="write"
+ local pfx;
+ local mult;
case "${type#c}" in
+ v) pfx="atomic_";;
+ P) pfx="atomic_"; mult="2 * ";;
i) return;;
+ L) return;;
+ V) return;;
esac
if [ ${type#c} != ${type} ]; then
@@ -27,7 +33,16 @@ gen_param_check()
rw="read_write"
fi
- printf "\tinstrument_atomic_${rw}(${name}, sizeof(*${name}));\n"
+ if meta_has_macro "${meta}"; then
+ name="__ai_${name}"
+ fi
+
+ printf "\tinstrument_${pfx}${rw}(${name}, ${mult}sizeof(*${name}));"
+ if meta_has_macro "${meta}"; then
+ printf " \\"
+ fi
+ printf "\n"
+
}
#gen_params_checks(meta, arg...)
@@ -41,6 +56,52 @@ gen_params_checks()
done
}
+#gen_var(arg)
+gen_var()
+{
+ local type="${1%%:*}"
+ local name="$(gen_param_name "$1")"
+
+ case "${type#c}" in
+ L) return;;
+ V) return;;
+ esac
+
+ printf "\ttypeof(${name}) __ai_${name} = (${name}); \\\\\n";
+}
+
+#gen_vars(arg...)
+gen_vars()
+{
+ while [ "$#" -gt 0 ]; do
+ gen_var "$1"
+ shift
+ done
+}
+
+#gen_varg(arg)
+gen_varg()
+{
+ local type="${1%%:*}"
+ local name="$(gen_param_name "$1")"
+
+ case "${type#c}" in
+ L) printf "${name}";;
+ V) printf "__VA_ARGS__";;
+ *) printf "__ai_${name}";;
+ esac
+}
+
+#gen_vargs(arg...)
+gen_vargs()
+{
+ while [ "$#" -gt 0 ]; do
+ printf "$(gen_varg "$1")"
+ [ "$#" -gt 1 ] && printf ", "
+ shift
+ done
+}
+
#gen_proto_order_variant(meta, pfx, name, sfx, order, atomic, int, arg...)
gen_proto_order_variant()
{
@@ -51,57 +112,49 @@ gen_proto_order_variant()
local order="$1"; shift
local atomic="$1"; shift
local int="$1"; shift
+ local atomicname;
- local atomicname="${atomic}_${pfx}${name}${sfx}${order}"
+ if [ -n "${atomic}" ]; then
+ atomicname="${atomic}_${pfx}${name}${sfx}${order}"
+ else
+ atomicname="${pfx}${name}${sfx}${order}"
+ fi
- local ret="$(gen_ret_type "${meta}" "${int}")"
- local params="$(gen_params "${int}" "${atomic}" "$@")"
local checks="$(gen_params_checks "${meta}" "$@")"
local args="$(gen_args "$@")"
- local retstmt="$(gen_ret_stmt "${meta}")"
-
-cat <<EOF
-static __always_inline ${ret}
-${atomicname}(${params})
-{
-${checks}
- ${retstmt}arch_${atomicname}(${args});
-}
-EOF
- printf "\n"
-}
-
-gen_xchg()
-{
- local xchg="$1"; shift
- local mult="$1"; shift
+ if meta_has_macro "${meta}"; then
- if [ "${xchg%${xchg#try_cmpxchg}}" = "try_cmpxchg" ] ; then
+ local vars="$(gen_vars "$@")"
+ local vargs="$(gen_vargs "$@")"
cat <<EOF
-#define ${xchg}(ptr, oldp, ...) \\
+#define ${atomicname}(${args}) \\
({ \\
- typeof(ptr) __ai_ptr = (ptr); \\
- typeof(oldp) __ai_oldp = (oldp); \\
- instrument_atomic_write(__ai_ptr, ${mult}sizeof(*__ai_ptr)); \\
- instrument_atomic_write(__ai_oldp, ${mult}sizeof(*__ai_oldp)); \\
- arch_${xchg}(__ai_ptr, __ai_oldp, __VA_ARGS__); \\
+${vars}
+${checks}
+ arch_${atomicname}(${vargs}); \\
})
EOF
else
+ local ret="$(gen_ret_type "${meta}" "${int}")"
+ local params="$(gen_params "${int}" "${atomic}" "$@")"
+ local retstmt="$(gen_ret_stmt "${meta}")"
+
cat <<EOF
-#define ${xchg}(ptr, ...) \\
-({ \\
- typeof(ptr) __ai_ptr = (ptr); \\
- instrument_atomic_write(__ai_ptr, ${mult}sizeof(*__ai_ptr)); \\
- arch_${xchg}(__ai_ptr, __VA_ARGS__); \\
-})
+static __always_inline ${ret}
+${atomicname}(${params})
+{
+${checks}
+ ${retstmt}arch_${atomicname}(${args});
+}
EOF
fi
+
+ printf "\n"
}
cat << EOF
@@ -142,24 +195,23 @@ grep '^[a-z]' "$1" | while read name met
gen_proto "${meta}" "${name}" "atomic_long" "long" ${args}
done
-
-for xchg in "xchg" "cmpxchg" "cmpxchg64" "try_cmpxchg"; do
+for xchg in "xchg" "cmpxchg" "cmpxchg64"; do
for order in "" "_acquire" "_release" "_relaxed"; do
- gen_xchg "${xchg}${order}" ""
- printf "\n"
+ gen_proto_order_variant "m" "" "${xchg}" "" "${order}" "" "" "v:ptr" "V:..."
done
done
-for xchg in "cmpxchg_local" "cmpxchg64_local" "sync_cmpxchg"; do
- gen_xchg "${xchg}" ""
- printf "\n"
+for order in "" "_acquire" "_release" "_relaxed"; do
+ gen_proto_order_variant "m" "" "try_cmpxchg" "" "${order}" "" "" "v:ptr" "p:oldp" "V:..."
done
-gen_xchg "cmpxchg_double" "2 * "
-
-printf "\n\n"
+for xchg in "cmpxchg_local" "cmpxchg64_local" "sync_cmpxchg"; do
+ gen_proto_order_variant "m" "" "${xchg}" "" "" "" "" "v:ptr" "V:..."
+done
-gen_xchg "cmpxchg_double_local" "2 * "
+for xchg in "cmpxchg_double" "cmpxchg_double_local"; do
+ gen_proto_order_variant "m" "" "${xchg}" "" "" "" "" "P:ptr" "V:..."
+done
cat <<EOF
--- a/scripts/atomic/gen-atomic-long.sh
+++ b/scripts/atomic/gen-atomic-long.sh
@@ -17,16 +17,21 @@ gen_cast()
printf "($(gen_param_type "${arg}" "${int}" "${atomic}"))"
}
-#gen_args_cast(int, atomic, arg...)
+#gen_args_cast(meta, int, atomic, arg...)
gen_args_cast()
{
+ local meta=$1; shift
local int="$1"; shift
local atomic="$1"; shift
while [ "$#" -gt 0 ]; do
local cast="$(gen_cast "$1" "${int}" "${atomic}")"
local arg="$(gen_param_name "$1")"
- printf "${cast}${arg}"
+ if meta_has_macro "${meta}" && [ "${1%%:*}" != "L" ]; then
+ printf "${cast}(${arg})"
+ else
+ printf "${cast}${arg}"
+ fi
[ "$#" -gt 1 ] && printf ", "
shift;
done
@@ -40,10 +45,24 @@ gen_proto_order_variant()
local atomic="$1"; shift
local int="$1"; shift
- local ret="$(gen_ret_type "${meta}" "long")"
- local params="$(gen_params "long" "atomic_long" "$@")"
- local argscast="$(gen_args_cast "${int}" "${atomic}" "$@")"
- local retstmt="$(gen_ret_stmt "${meta}")"
+ local argscast="$(gen_args_cast "${meta}" "${int}" "${atomic}" "$@")"
+
+ if meta_has_macro "${meta}"; then
+
+ local args="$(gen_args "$@")"
+
+cat <<EOF
+#define arch_atomic_long_${name}(${args}) \\
+({ \\
+ arch_${atomic}_${name}(${argscast}) \\
+})
+
+EOF
+ else
+
+ local ret="$(gen_ret_type "${meta}" "long")"
+ local params="$(gen_params "long" "atomic_long" "$@")"
+ local retstmt="$(gen_ret_stmt "${meta}")"
cat <<EOF
static __always_inline ${ret}
@@ -53,6 +72,7 @@ arch_atomic_long_${name}(${params})
}
EOF
+ fi
}
cat << EOF
^ permalink raw reply [flat|nested] 34+ messages in thread
* [PATCH v2 2/9] atomic: Add xchg.tbl
2021-12-10 16:16 [PATCH v2 0/9] refcount: Improve code-gen Peter Zijlstra
2021-12-10 16:16 ` [PATCH v2 1/9] atomic: Prepare scripts for macro ops Peter Zijlstra
@ 2021-12-10 16:16 ` Peter Zijlstra
2021-12-13 9:50 ` Mark Rutland
2021-12-10 16:16 ` [PATCH v2 3/9] atomic: Introduce atomic_{inc,dec,dec_and_test}_overflow() Peter Zijlstra
` (9 subsequent siblings)
11 siblings, 1 reply; 34+ messages in thread
From: Peter Zijlstra @ 2021-12-10 16:16 UTC (permalink / raw)
To: will, boqun.feng
Cc: linux-kernel, x86, peterz, mark.rutland, elver, keescook, hch,
torvalds, axboe
The tail of gen-atomic-instrumented.sh now looks like a hard-coded
variant of atomics.tbl, extract it into xchg.tbl.
Add meta-'M' to generate the order variants.
No change in generated files.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
---
scripts/atomic/atomic-tbl.sh | 10 +++++-----
scripts/atomic/atomics.tbl | 2 +-
scripts/atomic/gen-atomic-instrumented.sh | 18 ++----------------
scripts/atomic/xchg.tbl | 13 +++++++++++++
4 files changed, 21 insertions(+), 22 deletions(-)
--- a/scripts/atomic/atomic-tbl.sh
+++ b/scripts/atomic/atomic-tbl.sh
@@ -15,31 +15,31 @@ meta_in()
#meta_has_ret(meta)
meta_has_ret()
{
- meta_in "$1" "bBiIfFlRm"
+ meta_in "$1" "bBiIfFlRMm"
}
#meta_has_acquire(meta)
meta_has_acquire()
{
- meta_in "$1" "BFIlR"
+ meta_in "$1" "BFIlRM"
}
#meta_has_release(meta)
meta_has_release()
{
- meta_in "$1" "BFIRs"
+ meta_in "$1" "BFIRsM"
}
#meta_has_relaxed(meta)
meta_has_relaxed()
{
- meta_in "$1" "BFIR"
+ meta_in "$1" "BFIRM"
}
#meta_has_macro(meta)
meta_has_macro()
{
- meta_in "$1" "mn"
+ meta_in "$1" "Mmn"
}
#find_fallback_template(pfx, name, sfx, order)
--- a/scripts/atomic/atomics.tbl
+++ b/scripts/atomic/atomics.tbl
@@ -10,7 +10,7 @@
# * F/f - fetch: returns base type (has fetch_ variants)
# * l - load: returns base type (has _acquire order variant)
# * s - store: returns void (has _release order variant)
-# * m - macro: with return value
+# * M/m - macro: with return value
# * n - macro: with No return value
#
# Where args contains list of type[:name], where type is:
--- a/scripts/atomic/gen-atomic-instrumented.sh
+++ b/scripts/atomic/gen-atomic-instrumented.sh
@@ -195,22 +195,8 @@ grep '^[a-z]' "$1" | while read name met
gen_proto "${meta}" "${name}" "atomic_long" "long" ${args}
done
-for xchg in "xchg" "cmpxchg" "cmpxchg64"; do
- for order in "" "_acquire" "_release" "_relaxed"; do
- gen_proto_order_variant "m" "" "${xchg}" "" "${order}" "" "" "v:ptr" "V:..."
- done
-done
-
-for order in "" "_acquire" "_release" "_relaxed"; do
- gen_proto_order_variant "m" "" "try_cmpxchg" "" "${order}" "" "" "v:ptr" "p:oldp" "V:..."
-done
-
-for xchg in "cmpxchg_local" "cmpxchg64_local" "sync_cmpxchg"; do
- gen_proto_order_variant "m" "" "${xchg}" "" "" "" "" "v:ptr" "V:..."
-done
-
-for xchg in "cmpxchg_double" "cmpxchg_double_local"; do
- gen_proto_order_variant "m" "" "${xchg}" "" "" "" "" "P:ptr" "V:..."
+grep '^[a-z]' $(dirname $1)/xchg.tbl | while read name meta args; do
+ gen_proto "${meta}" "${name}" "" "" ${args}
done
cat <<EOF
--- /dev/null
+++ b/scripts/atomic/xchg.tbl
@@ -0,0 +1,13 @@
+# name meta args...
+#
+# see atomics.tbl for a description of meta and args...
+#
+xchg M v:ptr V:...
+cmpxchg M v:ptr V:...
+cmpxchg64 M v:ptr V:...
+try_cmpxchg M v:ptr p:oldp V:...
+cmpxchg_local m v:ptr V:...
+cmpxchg64_local m v:ptr V:...
+sync_cmpxchg m v:ptr V:...
+cmpxchg_double m P:ptr V:...
+cmpxchg_double_local m P:ptr V:...
^ permalink raw reply [flat|nested] 34+ messages in thread
* [PATCH v2 3/9] atomic: Introduce atomic_{inc,dec,dec_and_test}_overflow()
2021-12-10 16:16 [PATCH v2 0/9] refcount: Improve code-gen Peter Zijlstra
2021-12-10 16:16 ` [PATCH v2 1/9] atomic: Prepare scripts for macro ops Peter Zijlstra
2021-12-10 16:16 ` [PATCH v2 2/9] atomic: Add xchg.tbl Peter Zijlstra
@ 2021-12-10 16:16 ` Peter Zijlstra
2021-12-13 10:06 ` Mark Rutland
2021-12-10 16:16 ` [PATCH v2 4/9] refcount: Use atomic_*_overflow() Peter Zijlstra
` (8 subsequent siblings)
11 siblings, 1 reply; 34+ messages in thread
From: Peter Zijlstra @ 2021-12-10 16:16 UTC (permalink / raw)
To: will, boqun.feng
Cc: linux-kernel, x86, peterz, mark.rutland, elver, keescook, hch,
torvalds, axboe
In order to facilitate architecture support for refcount_t, introduce
a number of new atomic primitives that have a uaccess style exception
for overflow.
Notably:
atomic_inc_overflow(v, Label):
increment and goto Label when the old value of v is zero or
negative.
atomic_dec_overflow(v, Label):
decrement and goto Label when the new value of v is zero or
negative
atomic_dec_and_test_overflow(v, Label):
decrement and return true when the result is zero and goto
Label when the new value of v is negative
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
---
include/linux/atomic/atomic-arch-fallback.h | 64 ++++++++++++++++++++++++
include/linux/atomic/atomic-instrumented.h | 65 ++++++++++++++++++++++++-
include/linux/atomic/atomic-long.h | 32 +++++++++++-
scripts/atomic/atomics.tbl | 3 +
scripts/atomic/fallbacks/dec_and_test_overflow | 12 ++++
scripts/atomic/fallbacks/dec_overflow | 8 +++
scripts/atomic/fallbacks/inc_overflow | 8 +++
7 files changed, 189 insertions(+), 3 deletions(-)
--- a/include/linux/atomic/atomic-arch-fallback.h
+++ b/include/linux/atomic/atomic-arch-fallback.h
@@ -1250,6 +1250,37 @@ arch_atomic_dec_if_positive(atomic_t *v)
#define arch_atomic_dec_if_positive arch_atomic_dec_if_positive
#endif
+#ifndef arch_atomic_inc_overflow
+#define arch_atomic_inc_overflow(_v, _label) \
+do { \
+ int __old = arch_atomic_fetch_inc(_v); \
+ if (unlikely(__old <= 0)) \
+ goto _label; \
+} while (0)
+#endif
+
+#ifndef arch_atomic_dec_overflow
+#define arch_atomic_dec_overflow(_v, _label) \
+do { \
+ int __new = arch_atomic_dec_return(_v); \
+ if (unlikely(__new <= 0)) \
+ goto _label; \
+} while (0)
+#endif
+
+#ifndef arch_atomic_dec_and_test_overflow
+#define arch_atomic_dec_and_test_overflow(_v, _label) \
+({ \
+ bool __ret = false; \
+ int __new = arch_atomic_dec_return(_v); \
+ if (unlikely(__new < 0)) \
+ goto _label; \
+ if (unlikely(__new == 0)) \
+ __ret = true; \
+ __ret; \
+})
+#endif
+
#ifdef CONFIG_GENERIC_ATOMIC64
#include <asm-generic/atomic64.h>
#endif
@@ -2357,5 +2388,36 @@ arch_atomic64_dec_if_positive(atomic64_t
#define arch_atomic64_dec_if_positive arch_atomic64_dec_if_positive
#endif
+#ifndef arch_atomic64_inc_overflow
+#define arch_atomic64_inc_overflow(_v, _label) \
+do { \
+ s64 __old = arch_atomic64_fetch_inc(_v); \
+ if (unlikely(__old <= 0)) \
+ goto _label; \
+} while (0)
+#endif
+
+#ifndef arch_atomic64_dec_overflow
+#define arch_atomic64_dec_overflow(_v, _label) \
+do { \
+ s64 __new = arch_atomic64_dec_return(_v); \
+ if (unlikely(__new <= 0)) \
+ goto _label; \
+} while (0)
+#endif
+
+#ifndef arch_atomic64_dec_and_test_overflow
+#define arch_atomic64_dec_and_test_overflow(_v, _label) \
+({ \
+ bool __ret = false; \
+ s64 __new = arch_atomic64_dec_return(_v); \
+ if (unlikely(__new < 0)) \
+ goto _label; \
+ if (unlikely(__new == 0)) \
+ __ret = true; \
+ __ret; \
+})
+#endif
+
#endif /* _LINUX_ATOMIC_FALLBACK_H */
-// cca554917d7ea73d5e3e7397dd70c484cad9b2c4
+// e4c677b23b3fd5e8dc4bce9d6c055103666cfc4a
--- a/include/linux/atomic/atomic-instrumented.h
+++ b/include/linux/atomic/atomic-instrumented.h
@@ -599,6 +599,27 @@ atomic_dec_if_positive(atomic_t *v)
return arch_atomic_dec_if_positive(v);
}
+#define atomic_inc_overflow(v, L) \
+({ \
+ typeof(v) __ai_v = (v); \
+ instrument_atomic_read_write(__ai_v, sizeof(*__ai_v)); \
+ arch_atomic_inc_overflow(__ai_v, L); \
+})
+
+#define atomic_dec_overflow(v, L) \
+({ \
+ typeof(v) __ai_v = (v); \
+ instrument_atomic_read_write(__ai_v, sizeof(*__ai_v)); \
+ arch_atomic_dec_overflow(__ai_v, L); \
+})
+
+#define atomic_dec_and_test_overflow(v, L) \
+({ \
+ typeof(v) __ai_v = (v); \
+ instrument_atomic_read_write(__ai_v, sizeof(*__ai_v)); \
+ arch_atomic_dec_and_test_overflow(__ai_v, L); \
+})
+
static __always_inline s64
atomic64_read(const atomic64_t *v)
{
@@ -1177,6 +1198,27 @@ atomic64_dec_if_positive(atomic64_t *v)
return arch_atomic64_dec_if_positive(v);
}
+#define atomic64_inc_overflow(v, L) \
+({ \
+ typeof(v) __ai_v = (v); \
+ instrument_atomic_read_write(__ai_v, sizeof(*__ai_v)); \
+ arch_atomic64_inc_overflow(__ai_v, L); \
+})
+
+#define atomic64_dec_overflow(v, L) \
+({ \
+ typeof(v) __ai_v = (v); \
+ instrument_atomic_read_write(__ai_v, sizeof(*__ai_v)); \
+ arch_atomic64_dec_overflow(__ai_v, L); \
+})
+
+#define atomic64_dec_and_test_overflow(v, L) \
+({ \
+ typeof(v) __ai_v = (v); \
+ instrument_atomic_read_write(__ai_v, sizeof(*__ai_v)); \
+ arch_atomic64_dec_and_test_overflow(__ai_v, L); \
+})
+
static __always_inline long
atomic_long_read(const atomic_long_t *v)
{
@@ -1755,6 +1797,27 @@ atomic_long_dec_if_positive(atomic_long_
return arch_atomic_long_dec_if_positive(v);
}
+#define atomic_long_inc_overflow(v, L) \
+({ \
+ typeof(v) __ai_v = (v); \
+ instrument_atomic_read_write(__ai_v, sizeof(*__ai_v)); \
+ arch_atomic_long_inc_overflow(__ai_v, L); \
+})
+
+#define atomic_long_dec_overflow(v, L) \
+({ \
+ typeof(v) __ai_v = (v); \
+ instrument_atomic_read_write(__ai_v, sizeof(*__ai_v)); \
+ arch_atomic_long_dec_overflow(__ai_v, L); \
+})
+
+#define atomic_long_dec_and_test_overflow(v, L) \
+({ \
+ typeof(v) __ai_v = (v); \
+ instrument_atomic_read_write(__ai_v, sizeof(*__ai_v)); \
+ arch_atomic_long_dec_and_test_overflow(__ai_v, L); \
+})
+
#define xchg(ptr, ...) \
({ \
typeof(ptr) __ai_ptr = (ptr); \
@@ -1912,4 +1975,4 @@ atomic_long_dec_if_positive(atomic_long_
#endif /* _LINUX_ATOMIC_INSTRUMENTED_H */
-// 66cdf9a0e0a995cba29c61baf018f7ef35974ae5
+// 702806891ef1d01d76767c55088264ab6a1ef77d
--- a/include/linux/atomic/atomic-long.h
+++ b/include/linux/atomic/atomic-long.h
@@ -515,6 +515,21 @@ arch_atomic_long_dec_if_positive(atomic_
return arch_atomic64_dec_if_positive(v);
}
+#define arch_atomic_long_inc_overflow(v, L) \
+({ \
+ arch_atomic64_inc_overflow((v), L) \
+})
+
+#define arch_atomic_long_dec_overflow(v, L) \
+({ \
+ arch_atomic64_dec_overflow((v), L) \
+})
+
+#define arch_atomic_long_dec_and_test_overflow(v, L) \
+({ \
+ arch_atomic64_dec_and_test_overflow((v), L) \
+})
+
#else /* CONFIG_64BIT */
static __always_inline long
@@ -1009,6 +1024,21 @@ arch_atomic_long_dec_if_positive(atomic_
return arch_atomic_dec_if_positive(v);
}
+#define arch_atomic_long_inc_overflow(v, L) \
+({ \
+ arch_atomic_inc_overflow((v), L) \
+})
+
+#define arch_atomic_long_dec_overflow(v, L) \
+({ \
+ arch_atomic_dec_overflow((v), L) \
+})
+
+#define arch_atomic_long_dec_and_test_overflow(v, L) \
+({ \
+ arch_atomic_dec_and_test_overflow((v), L) \
+})
+
#endif /* CONFIG_64BIT */
#endif /* _LINUX_ATOMIC_LONG_H */
-// e8f0e08ff072b74d180eabe2ad001282b38c2c88
+// 487bc4fea91f23f2a4b42af7d5b49ef9172ae792
--- a/scripts/atomic/atomics.tbl
+++ b/scripts/atomic/atomics.tbl
@@ -44,3 +44,6 @@ inc_not_zero b v
inc_unless_negative b v
dec_unless_positive b v
dec_if_positive i v
+inc_overflow n v L
+dec_overflow n v L
+dec_and_test_overflow m v L
--- /dev/null
+++ b/scripts/atomic/fallbacks/dec_and_test_overflow
@@ -0,0 +1,12 @@
+cat << EOF
+#define arch_${atomic}_dec_and_test_overflow(_v, _label) \\
+({ \\
+ bool __ret = false; \\
+ ${int} __new = arch_${atomic}_dec_return(_v); \\
+ if (unlikely(__new < 0)) \\
+ goto _label; \\
+ if (unlikely(__new == 0)) \\
+ __ret = true; \\
+ __ret; \\
+})
+EOF
--- /dev/null
+++ b/scripts/atomic/fallbacks/dec_overflow
@@ -0,0 +1,8 @@
+cat << EOF
+#define arch_${atomic}_dec_overflow(_v, _label) \\
+do { \\
+ ${int} __new = arch_${atomic}_dec_return(_v); \\
+ if (unlikely(__new <= 0)) \\
+ goto _label; \\
+} while (0)
+EOF
--- /dev/null
+++ b/scripts/atomic/fallbacks/inc_overflow
@@ -0,0 +1,8 @@
+cat << EOF
+#define arch_${atomic}_inc_overflow(_v, _label) \\
+do { \\
+ ${int} __old = arch_${atomic}_fetch_inc(_v); \\
+ if (unlikely(__old <= 0)) \\
+ goto _label; \\
+} while (0)
+EOF
^ permalink raw reply [flat|nested] 34+ messages in thread
* [PATCH v2 4/9] refcount: Use atomic_*_overflow()
2021-12-10 16:16 [PATCH v2 0/9] refcount: Improve code-gen Peter Zijlstra
` (2 preceding siblings ...)
2021-12-10 16:16 ` [PATCH v2 3/9] atomic: Introduce atomic_{inc,dec,dec_and_test}_overflow() Peter Zijlstra
@ 2021-12-10 16:16 ` Peter Zijlstra
2021-12-13 10:35 ` Mark Rutland
2021-12-10 16:16 ` [PATCH v2 5/9] atomic,x86: Implement atomic_dec_and_test_overflow() Peter Zijlstra
` (7 subsequent siblings)
11 siblings, 1 reply; 34+ messages in thread
From: Peter Zijlstra @ 2021-12-10 16:16 UTC (permalink / raw)
To: will, boqun.feng
Cc: linux-kernel, x86, peterz, mark.rutland, elver, keescook, hch,
torvalds, axboe
Use the shiny new atomic_*_overflow() functions in order to have better
code-gen.
Strictly speaking, these ops operate on [0, INT_MIN] rather than
[0, INT_MAX] but this is harmless. At worst another op finds the
refcount is negative and goes saturate, which is always a possibility
anyway.
Notably refcount_inc() case no longer distinguishes between
inc-from-zero and inc-negative in the fast path, this improves
code-gen:
4b88: b8 01 00 00 00 mov $0x1,%eax
4b8d: f0 0f c1 43 28 lock xadd %eax,0x28(%rbx)
4b92: 85 c0 test %eax,%eax
4b94: 74 1b je 4bb1 <alloc_perf_context+0xf1>
4b96: 8d 50 01 lea 0x1(%rax),%edx
4b99: 09 c2 or %eax,%edx
4b9b: 78 20 js 4bbd <alloc_perf_context+0xfd>
to:
4768: b8 01 00 00 00 mov $0x1,%eax
476d: f0 0f c1 43 28 lock xadd %eax,0x28(%rbx)
4772: 85 c0 test %eax,%eax
4774: 7e 14 jle 478a <alloc_perf_context+0xea>
without sacrificing on functionality; the only thing that suffers is
the reported error condition, which might now 'spuriously' report
'saturated' instead of 'inc-from-zero'.
refcount_dec_and_test() is also improved:
aa40: b8 ff ff ff ff mov $0xffffffff,%eax
aa45: f0 0f c1 07 lock xadd %eax,(%rdi)
aa49: 83 f8 01 cmp $0x1,%eax
aa4c: 74 05 je aa53 <ring_buffer_put+0x13>
aa4e: 85 c0 test %eax,%eax
aa50: 7e 1e jle aa70 <ring_buffer_put+0x30>
aa52: c3 ret
to:
a980: b8 ff ff ff ff mov $0xffffffff,%eax
a985: f0 0f c1 07 lock xadd %eax,(%rdi)
a989: 83 e8 01 sub $0x1,%eax
a98c: 78 20 js a9ae <ring_buffer_put+0x2e>
a98e: 74 01 je a991 <ring_buffer_put+0x11>
a990: c3 ret
XXX atomic_dec_and_test_overflow() is strictly stronger ordered than
refcount_dec_and_test() is defined -- Power and Arrghh64 ?
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
---
include/linux/refcount.h | 17 +++++++++++++----
lib/refcount.c | 5 +++++
2 files changed, 18 insertions(+), 4 deletions(-)
--- a/include/linux/refcount.h
+++ b/include/linux/refcount.h
@@ -264,7 +264,10 @@ static inline void __refcount_inc(refcou
*/
static inline void refcount_inc(refcount_t *r)
{
- __refcount_inc(r, NULL);
+ atomic_inc_overflow(&r->refs, Eoverflow);
+ return;
+Eoverflow:
+ refcount_warn_saturate(r, REFCOUNT_ADD_OVF);
}
static inline __must_check bool __refcount_sub_and_test(int i, refcount_t *r, int *oldp)
@@ -330,7 +333,10 @@ static inline __must_check bool __refcou
*/
static inline __must_check bool refcount_dec_and_test(refcount_t *r)
{
- return __refcount_dec_and_test(r, NULL);
+ return atomic_dec_and_test_overflow(&r->refs, Eoverflow);
+Eoverflow:
+ refcount_warn_saturate(r, REFCOUNT_SUB_UAF);
+ return false;
}
static inline void __refcount_dec(refcount_t *r, int *oldp)
@@ -340,7 +346,7 @@ static inline void __refcount_dec(refcou
if (oldp)
*oldp = old;
- if (unlikely(old <= 1))
+ if (unlikely(old - 1 <= 0))
refcount_warn_saturate(r, REFCOUNT_DEC_LEAK);
}
@@ -356,7 +362,10 @@ static inline void __refcount_dec(refcou
*/
static inline void refcount_dec(refcount_t *r)
{
- __refcount_dec(r, NULL);
+ atomic_dec_overflow(&r->refs, Eoverflow);
+ return;
+Eoverflow:
+ refcount_warn_saturate(r, REFCOUNT_DEC_LEAK);
}
extern __must_check bool refcount_dec_if_one(refcount_t *r);
--- a/lib/refcount.c
+++ b/lib/refcount.c
@@ -12,8 +12,13 @@
void refcount_warn_saturate(refcount_t *r, enum refcount_saturation_type t)
{
+ int old = refcount_read(r);
refcount_set(r, REFCOUNT_SATURATED);
+ /* racy; who cares */
+ if (old == 1 && t == REFCOUNT_ADD_OVF)
+ t = REFCOUNT_ADD_UAF;
+
switch (t) {
case REFCOUNT_ADD_NOT_ZERO_OVF:
REFCOUNT_WARN("saturated; leaking memory");
^ permalink raw reply [flat|nested] 34+ messages in thread
* [PATCH v2 5/9] atomic,x86: Implement atomic_dec_and_test_overflow()
2021-12-10 16:16 [PATCH v2 0/9] refcount: Improve code-gen Peter Zijlstra
` (3 preceding siblings ...)
2021-12-10 16:16 ` [PATCH v2 4/9] refcount: Use atomic_*_overflow() Peter Zijlstra
@ 2021-12-10 16:16 ` Peter Zijlstra
2021-12-13 11:04 ` Mark Rutland
2021-12-10 16:16 ` [PATCH v2 6/9] refcount: Fix refcount_dec_not_one() Peter Zijlstra
` (6 subsequent siblings)
11 siblings, 1 reply; 34+ messages in thread
From: Peter Zijlstra @ 2021-12-10 16:16 UTC (permalink / raw)
To: will, boqun.feng
Cc: linux-kernel, x86, peterz, mark.rutland, elver, keescook, hch,
torvalds, axboe
Provide a better implementation of atomic_{dec,dec_and_test}_overflow() by
making use of the atomic-op condition codes.
This further improves the fast path code:
a980: b8 ff ff ff ff mov $0xffffffff,%eax
a985: f0 0f c1 07 lock xadd %eax,(%rdi)
a989: 83 e8 01 sub $0x1,%eax
a98c: 78 20 js a9ae <ring_buffer_put+0x2e>
a98e: 74 01 je a991 <ring_buffer_put+0x11>
a990: c3 ret
to:
a950: f0 ff 0f lock decl (%rdi)
a953: 7c 20 jl a975 <ring_buffer_put+0x25>
a955: 74 01 je a958 <ring_buffer_put+0x8>
a957: c3 ret
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
---
arch/x86/include/asm/atomic.h | 23 +++++++++++++++++++++++
1 file changed, 23 insertions(+)
--- a/arch/x86/include/asm/atomic.h
+++ b/arch/x86/include/asm/atomic.h
@@ -263,6 +263,29 @@ static __always_inline int arch_atomic_f
}
#define arch_atomic_fetch_xor arch_atomic_fetch_xor
+#define arch_atomic_dec_overflow(_v, _label) \
+ asm_volatile_goto(LOCK_PREFIX "decl %[var]\n\t" \
+ "jle %l1" \
+ : : [var] "m" ((_v)->counter) \
+ : "memory" \
+ : _label)
+
+#define arch_atomic_dec_and_test_overflow(_v, _label) \
+({ \
+ __label__ __zero; \
+ __label__ __out; \
+ bool __ret = false; \
+ asm_volatile_goto(LOCK_PREFIX "decl %[var]\n\t" \
+ "jl %l2\n\t" \
+ "je %l[__zero]" \
+ : : [var] "m" ((_v)->counter) \
+ : "memory" \
+ : __zero, _label); \
+ goto __out; \
+__zero: __ret = true; \
+__out: __ret; \
+})
+
#ifdef CONFIG_X86_32
# include <asm/atomic64_32.h>
#else
^ permalink raw reply [flat|nested] 34+ messages in thread
* [PATCH v2 6/9] refcount: Fix refcount_dec_not_one()
2021-12-10 16:16 [PATCH v2 0/9] refcount: Improve code-gen Peter Zijlstra
` (4 preceding siblings ...)
2021-12-10 16:16 ` [PATCH v2 5/9] atomic,x86: Implement atomic_dec_and_test_overflow() Peter Zijlstra
@ 2021-12-10 16:16 ` Peter Zijlstra
2021-12-10 16:16 ` [PATCH v2 7/9] refcount: Prepare for atomic_*_overflow() offsets Peter Zijlstra
` (5 subsequent siblings)
11 siblings, 0 replies; 34+ messages in thread
From: Peter Zijlstra @ 2021-12-10 16:16 UTC (permalink / raw)
To: will, boqun.feng
Cc: linux-kernel, x86, peterz, mark.rutland, elver, keescook, hch,
torvalds, axboe
refcount_dec_not_one() misbehaves when racing against the other
refcount ops, notably it directly compares against REFCOUNT_SATURATED,
even though, through aforementioned races, the value might be slightly
off.
Additionally, when refcount_dec_not_one() is used to decrement zero;
which is valid, because 0 is not one, then it behaves differently from
the other refcount_dec*() functions in that it doesn't call
refcount_warn_saturate().
In order to allow some fuzz around the corners of the positive range,
test for saturation slightly differently.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
---
lib/refcount.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
--- a/lib/refcount.c
+++ b/lib/refcount.c
@@ -81,7 +81,8 @@ bool refcount_dec_not_one(refcount_t *r)
unsigned int new, val = atomic_read(&r->refs);
do {
- if (unlikely(val == REFCOUNT_SATURATED))
+ /* SAT+SAT/2 < val < SAT-SAT/2 */
+ if (unlikely(val - (REFCOUNT_SATURATED + REFCOUNT_SATURATED/2) < -REFCOUNT_SATURATED))
return true;
if (val == 1)
@@ -89,7 +90,7 @@ bool refcount_dec_not_one(refcount_t *r)
new = val - 1;
if (new > val) {
- WARN_ONCE(new > val, "refcount_t: underflow; use-after-free.\n");
+ refcount_warn_saturate(r, REFCOUNT_SUB_UAF);
return true;
}
^ permalink raw reply [flat|nested] 34+ messages in thread
* [PATCH v2 7/9] refcount: Prepare for atomic_*_overflow() offsets
2021-12-10 16:16 [PATCH v2 0/9] refcount: Improve code-gen Peter Zijlstra
` (5 preceding siblings ...)
2021-12-10 16:16 ` [PATCH v2 6/9] refcount: Fix refcount_dec_not_one() Peter Zijlstra
@ 2021-12-10 16:16 ` Peter Zijlstra
2021-12-10 16:16 ` [PATCH v2 8/9] atomic,x86: Alternative atomic_*_overflow() scheme Peter Zijlstra
` (4 subsequent siblings)
11 siblings, 0 replies; 34+ messages in thread
From: Peter Zijlstra @ 2021-12-10 16:16 UTC (permalink / raw)
To: will, boqun.feng
Cc: linux-kernel, x86, peterz, mark.rutland, elver, keescook, hch,
torvalds, axboe
In order to prepare for atomic_*_overflow() not strictly being in the
[0,INT_MAX] range, add ATOMIC_OVERFLOW_OFFSET to correct for the 0
point.
This makes the uncommon refcount ops a little awkward, but allows for
faster common ops.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
---
include/linux/atomic.h | 16 ++++++++++++++++
include/linux/refcount.h | 16 ++++++++++++----
lib/refcount.c | 10 +++++-----
3 files changed, 33 insertions(+), 9 deletions(-)
--- a/include/linux/atomic.h
+++ b/include/linux/atomic.h
@@ -7,6 +7,14 @@
#include <asm/atomic.h>
#include <asm/barrier.h>
+#ifndef ATOMIC_OVERFLOW_OFFSET
+#define ATOMIC_OVERFLOW_OFFSET 0
+#endif
+
+#ifndef ATOMIC64_OVERFLOW_OFFSET
+#define ATOMIC64_OVERFLOW_OFFSET 0
+#endif
+
/*
* Relaxed variants of xchg, cmpxchg and some atomic operations.
*
@@ -81,4 +89,12 @@
#include <linux/atomic/atomic-long.h>
#include <linux/atomic/atomic-instrumented.h>
+#ifndef ATOMIC_LONG_OVERFLOW_OFFSET
+#ifdef CONFIG_64BIT
+#define ATOMIC_LONG_OVERFLOW_OFFSET ATOMIC64_OVERFLOW_OFFSET
+#else
+#define ATOMIC_LONG_OVERFLOW_OFFSET ATOMIC_OVERFLOW_OFFSET
+#endif
+#endif
+
#endif /* _LINUX_ATOMIC_H */
--- a/include/linux/refcount.h
+++ b/include/linux/refcount.h
@@ -133,7 +133,7 @@ void refcount_warn_saturate(refcount_t *
*/
static inline void refcount_set(refcount_t *r, int n)
{
- atomic_set(&r->refs, n);
+ atomic_set(&r->refs, n - ATOMIC_OVERFLOW_OFFSET);
}
/**
@@ -144,18 +144,20 @@ static inline void refcount_set(refcount
*/
static inline unsigned int refcount_read(const refcount_t *r)
{
- return atomic_read(&r->refs);
+ return atomic_read(&r->refs) + ATOMIC_OVERFLOW_OFFSET;
}
static inline __must_check bool __refcount_add_not_zero(int i, refcount_t *r, int *oldp)
{
- int old = refcount_read(r);
+ int old = atomic_read(&r->refs);
do {
- if (!old)
+ if (old == -ATOMIC_OVERFLOW_OFFSET)
break;
} while (!atomic_try_cmpxchg_relaxed(&r->refs, &old, old + i));
+ old += ATOMIC_OVERFLOW_OFFSET;
+
if (oldp)
*oldp = old;
@@ -192,6 +194,8 @@ static inline void __refcount_add(int i,
{
int old = atomic_fetch_add_relaxed(i, &r->refs);
+ old += ATOMIC_OVERFLOW_OFFSET;
+
if (oldp)
*oldp = old;
@@ -274,6 +278,8 @@ static inline __must_check bool __refcou
{
int old = atomic_fetch_sub_release(i, &r->refs);
+ old += ATOMIC_OVERFLOW_OFFSET;
+
if (oldp)
*oldp = old;
@@ -343,6 +349,8 @@ static inline void __refcount_dec(refcou
{
int old = atomic_fetch_sub_release(1, &r->refs);
+ old += ATOMIC_OVERFLOW_OFFSET;
+
if (oldp)
*oldp = old;
--- a/lib/refcount.c
+++ b/lib/refcount.c
@@ -13,7 +13,7 @@
void refcount_warn_saturate(refcount_t *r, enum refcount_saturation_type t)
{
int old = refcount_read(r);
- refcount_set(r, REFCOUNT_SATURATED);
+ atomic_set(&r->refs, REFCOUNT_SATURATED);
/* racy; who cares */
if (old == 1 && t == REFCOUNT_ADD_OVF)
@@ -59,9 +59,9 @@ EXPORT_SYMBOL(refcount_warn_saturate);
*/
bool refcount_dec_if_one(refcount_t *r)
{
- int val = 1;
+ int val = 1 - ATOMIC_OVERFLOW_OFFSET;
- return atomic_try_cmpxchg_release(&r->refs, &val, 0);
+ return atomic_try_cmpxchg_release(&r->refs, &val, 0 - ATOMIC_OVERFLOW_OFFSET);
}
EXPORT_SYMBOL(refcount_dec_if_one);
@@ -85,11 +85,11 @@ bool refcount_dec_not_one(refcount_t *r)
if (unlikely(val - (REFCOUNT_SATURATED + REFCOUNT_SATURATED/2) < -REFCOUNT_SATURATED))
return true;
- if (val == 1)
+ if (val == 1 - ATOMIC_OVERFLOW_OFFSET)
return false;
new = val - 1;
- if (new > val) {
+ if (new + ATOMIC_OVERFLOW_OFFSET > val + ATOMIC_OVERFLOW_OFFSET) {
refcount_warn_saturate(r, REFCOUNT_SUB_UAF);
return true;
}
^ permalink raw reply [flat|nested] 34+ messages in thread
* [PATCH v2 8/9] atomic,x86: Alternative atomic_*_overflow() scheme
2021-12-10 16:16 [PATCH v2 0/9] refcount: Improve code-gen Peter Zijlstra
` (6 preceding siblings ...)
2021-12-10 16:16 ` [PATCH v2 7/9] refcount: Prepare for atomic_*_overflow() offsets Peter Zijlstra
@ 2021-12-10 16:16 ` Peter Zijlstra
2021-12-10 16:53 ` Linus Torvalds
2021-12-13 16:43 ` Peter Zijlstra
2021-12-10 16:16 ` [PATCH v2 9/9] refcount: Optimize __refcount_add_not_zero(.i=1) Peter Zijlstra
` (3 subsequent siblings)
11 siblings, 2 replies; 34+ messages in thread
From: Peter Zijlstra @ 2021-12-10 16:16 UTC (permalink / raw)
To: will, boqun.feng
Cc: linux-kernel, x86, peterz, mark.rutland, elver, keescook, hch,
torvalds, axboe
Shift the overflow range from [0,INT_MIN] to [-1,INT_MIN], this allows
optimizing atomic_inc_overflow() to use "jle" to detect increment
from free-or-negative (with -1 being the new free and it's increment
being 0 which sets ZF).
This then obviously changes atomic_dec*_overflow() since it must now
detect the 0->-1 transition rather than the 1->0. Luckily this is
reflected in the carry flag (since we need to borrow to decrement 0).
However this means decrement must now use the SUB instruction with a
literal, since DEC doesn't set CF.
This then gives the following primitives:
[-1, INT_MIN] [0, INT_MIN]
inc() inc()
lock inc %[var] mov $-1, %[reg]
jle error-free-or-negative lock xadd %[reg], %[var]
test %[reg], %[reg]
jle error-zero-or-negative
dec() dec()
lock sub $1, %[var] lock dec %[var]
jc error-to-free jle error-zero-or-negative
jl error-from-negative
dec_and_test() dec_and_test()
lock sub $1, %[var] lock dec %[var]
jc do-free jl error-from-negative
jl error-from-negative je do-free
Make sure to set ATOMIC_OVERFLOW_OFFSET to 1 such that other code
interacting with these primitives can re-center 0.
Suggested-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
---
arch/x86/include/asm/atomic.h | 20 +++++++++++++++-----
1 file changed, 15 insertions(+), 5 deletions(-)
--- a/arch/x86/include/asm/atomic.h
+++ b/arch/x86/include/asm/atomic.h
@@ -263,21 +263,31 @@ static __always_inline int arch_atomic_f
}
#define arch_atomic_fetch_xor arch_atomic_fetch_xor
-#define arch_atomic_dec_overflow(_v, _label) \
- asm_volatile_goto(LOCK_PREFIX "decl %[var]\n\t" \
+#define ATOMIC_OVERFLOW_OFFSET 1
+
+#define arch_atomic_inc_overflow(_v, _label) \
+ asm_volatile_goto(LOCK_PREFIX "incl %[var]\n\r" \
"jle %l1" \
: : [var] "m" ((_v)->counter) \
: "memory" \
: _label)
+#define arch_atomic_dec_overflow(_v, _label) \
+ asm_volatile_goto(LOCK_PREFIX "subl $1, %[var]\n\t" \
+ "jc %l1\n\t" \
+ "jl %l1" \
+ : : [var] "m" ((_v)->counter) \
+ : "memory" \
+ : _label)
+
#define arch_atomic_dec_and_test_overflow(_v, _label) \
({ \
__label__ __zero; \
__label__ __out; \
bool __ret = false; \
- asm_volatile_goto(LOCK_PREFIX "decl %[var]\n\t" \
- "jl %l2\n\t" \
- "je %l[__zero]" \
+ asm_volatile_goto(LOCK_PREFIX "subl $1, %[var]\n\t" \
+ "jc %l[__zero]\n\t" \
+ "jl %l2" \
: : [var] "m" ((_v)->counter) \
: "memory" \
: __zero, _label); \
^ permalink raw reply [flat|nested] 34+ messages in thread
* [PATCH v2 9/9] refcount: Optimize __refcount_add_not_zero(.i=1)
2021-12-10 16:16 [PATCH v2 0/9] refcount: Improve code-gen Peter Zijlstra
` (7 preceding siblings ...)
2021-12-10 16:16 ` [PATCH v2 8/9] atomic,x86: Alternative atomic_*_overflow() scheme Peter Zijlstra
@ 2021-12-10 16:16 ` Peter Zijlstra
2021-12-10 19:37 ` [PATCH v2 0/9] refcount: Improve code-gen Peter Zijlstra
` (2 subsequent siblings)
11 siblings, 0 replies; 34+ messages in thread
From: Peter Zijlstra @ 2021-12-10 16:16 UTC (permalink / raw)
To: will, boqun.feng
Cc: linux-kernel, x86, peterz, mark.rutland, elver, keescook, hch,
torvalds, axboe
Allow the same off-by-one on the target range that refcount_inc()
already has by only testing the new value for overflow when the
increment is not constant-1.
Improves code-gen, for the common case from:
a887: 41 8b 14 24 mov (%r12),%edx
a88b: 83 fa ff cmp $0xffffffff,%edx
a88e: 74 1f je a8af <ring_buffer_get+0x3f>
a890: 8d 4a 01 lea 0x1(%rdx),%ecx
a893: 89 d0 mov %edx,%eax
a895: f0 41 0f b1 0c 24 lock cmpxchg %ecx,(%r12)
a89b: 75 35 jne a8d2 <ring_buffer_get+0x62>
a89d: 83 c2 02 add $0x2,%edx
a8a0: 09 ca or %ecx,%edx
a8a2: 78 19 js a8bd <ring_buffer_get+0x4d>
to:
a887: 41 8b 04 24 mov (%r12),%eax
a88b: 83 f8 ff cmp $0xffffffff,%eax
a88e: 74 1a je a8aa <ring_buffer_get+0x3a>
a890: 8d 50 01 lea 0x1(%rax),%edx
a893: f0 41 0f b1 14 24 lock cmpxchg %edx,(%r12)
a899: 75 f0 jne a88b <ring_buffer_get+0x1b>
a89b: 85 d2 test %edx,%edx
a89d: 78 19 js a8b8 <ring_buffer_get+0x48>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
---
include/linux/refcount.h | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
--- a/include/linux/refcount.h
+++ b/include/linux/refcount.h
@@ -161,7 +161,7 @@ static inline __must_check bool __refcou
if (oldp)
*oldp = old;
- if (unlikely(old < 0 || old + i < 0))
+ if (unlikely(old < 0 || (!(__builtin_constant_p(i) && i == 1) && old + i < 0)))
refcount_warn_saturate(r, REFCOUNT_ADD_NOT_ZERO_OVF);
return old;
^ permalink raw reply [flat|nested] 34+ messages in thread
* Re: [PATCH v2 8/9] atomic,x86: Alternative atomic_*_overflow() scheme
2021-12-10 16:16 ` [PATCH v2 8/9] atomic,x86: Alternative atomic_*_overflow() scheme Peter Zijlstra
@ 2021-12-10 16:53 ` Linus Torvalds
2021-12-10 17:27 ` Linus Torvalds
2021-12-17 3:38 ` Herbert Xu
2021-12-13 16:43 ` Peter Zijlstra
1 sibling, 2 replies; 34+ messages in thread
From: Linus Torvalds @ 2021-12-10 16:53 UTC (permalink / raw)
To: Peter Zijlstra
Cc: Will Deacon, Boqun Feng, Linux Kernel Mailing List,
the arch/x86 maintainers, Mark Rutland, Marco Elver, Kees Cook,
Christoph Hellwig, Jens Axboe
On Fri, Dec 10, 2021 at 8:27 AM Peter Zijlstra <peterz@infradead.org> wrote:
>
> Shift the overflow range from [0,INT_MIN] to [-1,INT_MIN], this allows
> optimizing atomic_inc_overflow() to use "jle" to detect increment
> from free-or-negative (with -1 being the new free and it's increment
> being 0 which sets ZF).
Thanks.
However, I think you can simplify this further:
> This then gives the following primitives:
>
> [-1, INT_MIN] [0, INT_MIN]
>
> inc() inc()
> lock inc %[var] mov $-1, %[reg]
> jle error-free-or-negative lock xadd %[reg], %[var]
> test %[reg], %[reg]
> jle error-zero-or-negative
>
> dec() dec()
> lock sub $1, %[var] lock dec %[var]
> jc error-to-free jle error-zero-or-negative
> jl error-from-negative
>
> dec_and_test() dec_and_test()
> lock sub $1, %[var] lock dec %[var]
> jc do-free jl error-from-negative
> jl error-from-negative je do-free
That "dec()" case could be just
lock dec %[var]
js error
because an underflow is an underflow - it doesn't matter if it's a "it
went to free" or "it became some other negative number".
That said - it may not matter - I'm not sure a plain "dec" is even a
valid operation on a ref in the first place. How could you ever
validly decrement a ref without checking for it being the last entry?
So I'm not sure "atomic_dec_overflow()" is even worth having as a
primitive, because I can't see any valid use for it. Is it for some
legacy case?
Linus
^ permalink raw reply [flat|nested] 34+ messages in thread
* Re: [PATCH v2 1/9] atomic: Prepare scripts for macro ops
2021-12-10 16:16 ` [PATCH v2 1/9] atomic: Prepare scripts for macro ops Peter Zijlstra
@ 2021-12-10 17:27 ` Mark Rutland
2021-12-10 17:43 ` Marco Elver
1 sibling, 0 replies; 34+ messages in thread
From: Mark Rutland @ 2021-12-10 17:27 UTC (permalink / raw)
To: Peter Zijlstra
Cc: will, boqun.feng, linux-kernel, x86, elver, keescook, hch,
torvalds, axboe
On Fri, Dec 10, 2021 at 05:16:19PM +0100, Peter Zijlstra wrote:
> Due to the limited usability of the GCC 'Labels as Values' extention,
> specifically it refuses to have a goto in an __always_inline function,
> even with a compile time constant label pointer, some new atomic ops
> will need to be introduced as macros.
>
> The xchg/cmpxchg family is already macros so extend that code to the
> regular atomic ops.
>
> Specifically introduce meta-'M', meta-'m' and meta-'n' to signify the
> op is a macro and add arg-'L', arg-'V' and arg-'P' for Label, VarArg
> and Pair arguments respectively.
Looks like `M` got factored out into the next patch, so I think that can be
deleted from this commit message.
> This unconvered some latent bugs in the instrumentation wrappery,
> specifically the try_cmpxchg() @oldp argument was instrumented as an
> atomic_read_write, while it's a regular read_write and many of the
> gen_xchg() ops had atomic_write instrumentation while
> atomic_read_write seems more appropriate.
>
> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
> ---
> include/linux/atomic/atomic-instrumented.h | 78 +++++++--------
> scripts/atomic/atomic-tbl.sh | 8 +
> scripts/atomic/atomics.tbl | 5 +
> scripts/atomic/gen-atomic-fallback.sh | 4
> scripts/atomic/gen-atomic-instrumented.sh | 142 +++++++++++++++++++----------
> scripts/atomic/gen-atomic-long.sh | 32 +++++-
> 6 files changed, 177 insertions(+), 92 deletions(-)
>
[...]
> --- a/scripts/atomic/atomics.tbl
> +++ b/scripts/atomic/atomics.tbl
> @@ -10,12 +10,17 @@
> # * F/f - fetch: returns base type (has fetch_ variants)
> # * l - load: returns base type (has _acquire order variant)
> # * s - store: returns void (has _release order variant)
> +# * m - macro: with return value
> +# * n - macro: with No return value
> #
> # Where args contains list of type[:name], where type is:
> # * cv - const pointer to atomic base type (atomic_t/atomic64_t/atomic_long_t)
> # * v - pointer to atomic base type (atomic_t/atomic64_t/atomic_long_t)
> +# * P - pointer to pair of atomic base type
> # * i - base type (int/s64/long)
> # * p - pointer to base type (int/s64/long)
> +# * L - label for exception case
> +# * V:... - vararg
Nit: should've been a tab here?
[...]
> @@ -51,57 +112,49 @@ gen_proto_order_variant()
> local order="$1"; shift
> local atomic="$1"; shift
> local int="$1"; shift
> + local atomicname;
>
> - local atomicname="${atomic}_${pfx}${name}${sfx}${order}"
> + if [ -n "${atomic}" ]; then
> + atomicname="${atomic}_${pfx}${name}${sfx}${order}"
> + else
> + atomicname="${pfx}${name}${sfx}${order}"
> + fi
How about:
local atomicname="${pfx}${name}${sfx}${order}"
if [ -n "${atomic}" ]; then
atomicname="${atomic}_${atomicname}"
fi
... so that it's clear we're just adding the atomic type as a prefix, and the
rest of the name should be the same either way?
Regardless of that specifically:
Reviewed-by: Mark Rutland <mark.rutland@arm.com>
Thanks,
Mark.
^ permalink raw reply [flat|nested] 34+ messages in thread
* Re: [PATCH v2 8/9] atomic,x86: Alternative atomic_*_overflow() scheme
2021-12-10 16:53 ` Linus Torvalds
@ 2021-12-10 17:27 ` Linus Torvalds
2021-12-17 3:38 ` Herbert Xu
1 sibling, 0 replies; 34+ messages in thread
From: Linus Torvalds @ 2021-12-10 17:27 UTC (permalink / raw)
To: Peter Zijlstra
Cc: Will Deacon, Boqun Feng, Linux Kernel Mailing List,
the arch/x86 maintainers, Mark Rutland, Marco Elver, Kees Cook,
Christoph Hellwig, Jens Axboe
On Fri, Dec 10, 2021 at 8:53 AM Linus Torvalds
<torvalds@linux-foundation.org> wrote:
>
> That said - it may not matter - I'm not sure a plain "dec" is even a
> valid operation on a ref in the first place. How could you ever
> validly decrement a ref without checking for it being the last entry?
I should have checked the users - it seems to be a pattern at least in
networking where people have extra references and do
refcount_dec(&skb->users);
dev_kfree_skb_any(skb);
because there's no way to tell dev_kfree_skb*() to decrement more than once.
So I guess it's all good, but yes, I still think you can just do "lock
dec .. js" for this operation.
Linus
^ permalink raw reply [flat|nested] 34+ messages in thread
* Re: [PATCH v2 1/9] atomic: Prepare scripts for macro ops
2021-12-10 16:16 ` [PATCH v2 1/9] atomic: Prepare scripts for macro ops Peter Zijlstra
2021-12-10 17:27 ` Mark Rutland
@ 2021-12-10 17:43 ` Marco Elver
1 sibling, 0 replies; 34+ messages in thread
From: Marco Elver @ 2021-12-10 17:43 UTC (permalink / raw)
To: Peter Zijlstra
Cc: will, boqun.feng, linux-kernel, x86, mark.rutland, keescook, hch,
torvalds, axboe
On Fri, 10 Dec 2021 at 17:27, Peter Zijlstra <peterz@infradead.org> wrote:
>
> Due to the limited usability of the GCC 'Labels as Values' extention,
> specifically it refuses to have a goto in an __always_inline function,
> even with a compile time constant label pointer, some new atomic ops
> will need to be introduced as macros.
>
> The xchg/cmpxchg family is already macros so extend that code to the
> regular atomic ops.
>
> Specifically introduce meta-'M', meta-'m' and meta-'n' to signify the
> op is a macro and add arg-'L', arg-'V' and arg-'P' for Label, VarArg
> and Pair arguments respectively.
>
> This unconvered some latent bugs in the instrumentation wrappery,
> specifically the try_cmpxchg() @oldp argument was instrumented as an
> atomic_read_write, while it's a regular read_write and many of the
> gen_xchg() ops had atomic_write instrumentation while
> atomic_read_write seems more appropriate.
Very nice, thanks for that!
> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Marco Elver <elver@google.com>
> ---
> include/linux/atomic/atomic-instrumented.h | 78 +++++++--------
> scripts/atomic/atomic-tbl.sh | 8 +
> scripts/atomic/atomics.tbl | 5 +
> scripts/atomic/gen-atomic-fallback.sh | 4
> scripts/atomic/gen-atomic-instrumented.sh | 142 +++++++++++++++++++----------
> scripts/atomic/gen-atomic-long.sh | 32 +++++-
> 6 files changed, 177 insertions(+), 92 deletions(-)
>
> --- a/include/linux/atomic/atomic-instrumented.h
> +++ b/include/linux/atomic/atomic-instrumented.h
> @@ -501,7 +501,7 @@ static __always_inline bool
> atomic_try_cmpxchg(atomic_t *v, int *old, int new)
> {
> instrument_atomic_read_write(v, sizeof(*v));
> - instrument_atomic_read_write(old, sizeof(*old));
> + instrument_read_write(old, sizeof(*old));
> return arch_atomic_try_cmpxchg(v, old, new);
> }
>
> @@ -509,7 +509,7 @@ static __always_inline bool
> atomic_try_cmpxchg_acquire(atomic_t *v, int *old, int new)
> {
> instrument_atomic_read_write(v, sizeof(*v));
> - instrument_atomic_read_write(old, sizeof(*old));
> + instrument_read_write(old, sizeof(*old));
> return arch_atomic_try_cmpxchg_acquire(v, old, new);
> }
>
> @@ -517,7 +517,7 @@ static __always_inline bool
> atomic_try_cmpxchg_release(atomic_t *v, int *old, int new)
> {
> instrument_atomic_read_write(v, sizeof(*v));
> - instrument_atomic_read_write(old, sizeof(*old));
> + instrument_read_write(old, sizeof(*old));
> return arch_atomic_try_cmpxchg_release(v, old, new);
> }
>
> @@ -525,7 +525,7 @@ static __always_inline bool
> atomic_try_cmpxchg_relaxed(atomic_t *v, int *old, int new)
> {
> instrument_atomic_read_write(v, sizeof(*v));
> - instrument_atomic_read_write(old, sizeof(*old));
> + instrument_read_write(old, sizeof(*old));
> return arch_atomic_try_cmpxchg_relaxed(v, old, new);
> }
>
> @@ -1079,7 +1079,7 @@ static __always_inline bool
> atomic64_try_cmpxchg(atomic64_t *v, s64 *old, s64 new)
> {
> instrument_atomic_read_write(v, sizeof(*v));
> - instrument_atomic_read_write(old, sizeof(*old));
> + instrument_read_write(old, sizeof(*old));
> return arch_atomic64_try_cmpxchg(v, old, new);
> }
>
> @@ -1087,7 +1087,7 @@ static __always_inline bool
> atomic64_try_cmpxchg_acquire(atomic64_t *v, s64 *old, s64 new)
> {
> instrument_atomic_read_write(v, sizeof(*v));
> - instrument_atomic_read_write(old, sizeof(*old));
> + instrument_read_write(old, sizeof(*old));
> return arch_atomic64_try_cmpxchg_acquire(v, old, new);
> }
>
> @@ -1095,7 +1095,7 @@ static __always_inline bool
> atomic64_try_cmpxchg_release(atomic64_t *v, s64 *old, s64 new)
> {
> instrument_atomic_read_write(v, sizeof(*v));
> - instrument_atomic_read_write(old, sizeof(*old));
> + instrument_read_write(old, sizeof(*old));
> return arch_atomic64_try_cmpxchg_release(v, old, new);
> }
>
> @@ -1103,7 +1103,7 @@ static __always_inline bool
> atomic64_try_cmpxchg_relaxed(atomic64_t *v, s64 *old, s64 new)
> {
> instrument_atomic_read_write(v, sizeof(*v));
> - instrument_atomic_read_write(old, sizeof(*old));
> + instrument_read_write(old, sizeof(*old));
> return arch_atomic64_try_cmpxchg_relaxed(v, old, new);
> }
>
> @@ -1657,7 +1657,7 @@ static __always_inline bool
> atomic_long_try_cmpxchg(atomic_long_t *v, long *old, long new)
> {
> instrument_atomic_read_write(v, sizeof(*v));
> - instrument_atomic_read_write(old, sizeof(*old));
> + instrument_read_write(old, sizeof(*old));
> return arch_atomic_long_try_cmpxchg(v, old, new);
> }
>
> @@ -1665,7 +1665,7 @@ static __always_inline bool
> atomic_long_try_cmpxchg_acquire(atomic_long_t *v, long *old, long new)
> {
> instrument_atomic_read_write(v, sizeof(*v));
> - instrument_atomic_read_write(old, sizeof(*old));
> + instrument_read_write(old, sizeof(*old));
> return arch_atomic_long_try_cmpxchg_acquire(v, old, new);
> }
>
> @@ -1673,7 +1673,7 @@ static __always_inline bool
> atomic_long_try_cmpxchg_release(atomic_long_t *v, long *old, long new)
> {
> instrument_atomic_read_write(v, sizeof(*v));
> - instrument_atomic_read_write(old, sizeof(*old));
> + instrument_read_write(old, sizeof(*old));
> return arch_atomic_long_try_cmpxchg_release(v, old, new);
> }
>
> @@ -1681,7 +1681,7 @@ static __always_inline bool
> atomic_long_try_cmpxchg_relaxed(atomic_long_t *v, long *old, long new)
> {
> instrument_atomic_read_write(v, sizeof(*v));
> - instrument_atomic_read_write(old, sizeof(*old));
> + instrument_read_write(old, sizeof(*old));
> return arch_atomic_long_try_cmpxchg_relaxed(v, old, new);
> }
>
> @@ -1758,84 +1758,84 @@ atomic_long_dec_if_positive(atomic_long_
> #define xchg(ptr, ...) \
> ({ \
> typeof(ptr) __ai_ptr = (ptr); \
> - instrument_atomic_write(__ai_ptr, sizeof(*__ai_ptr)); \
> + instrument_atomic_read_write(__ai_ptr, sizeof(*__ai_ptr)); \
> arch_xchg(__ai_ptr, __VA_ARGS__); \
> })
>
> #define xchg_acquire(ptr, ...) \
> ({ \
> typeof(ptr) __ai_ptr = (ptr); \
> - instrument_atomic_write(__ai_ptr, sizeof(*__ai_ptr)); \
> + instrument_atomic_read_write(__ai_ptr, sizeof(*__ai_ptr)); \
> arch_xchg_acquire(__ai_ptr, __VA_ARGS__); \
> })
>
> #define xchg_release(ptr, ...) \
> ({ \
> typeof(ptr) __ai_ptr = (ptr); \
> - instrument_atomic_write(__ai_ptr, sizeof(*__ai_ptr)); \
> + instrument_atomic_read_write(__ai_ptr, sizeof(*__ai_ptr)); \
> arch_xchg_release(__ai_ptr, __VA_ARGS__); \
> })
>
> #define xchg_relaxed(ptr, ...) \
> ({ \
> typeof(ptr) __ai_ptr = (ptr); \
> - instrument_atomic_write(__ai_ptr, sizeof(*__ai_ptr)); \
> + instrument_atomic_read_write(__ai_ptr, sizeof(*__ai_ptr)); \
> arch_xchg_relaxed(__ai_ptr, __VA_ARGS__); \
> })
>
> #define cmpxchg(ptr, ...) \
> ({ \
> typeof(ptr) __ai_ptr = (ptr); \
> - instrument_atomic_write(__ai_ptr, sizeof(*__ai_ptr)); \
> + instrument_atomic_read_write(__ai_ptr, sizeof(*__ai_ptr)); \
> arch_cmpxchg(__ai_ptr, __VA_ARGS__); \
> })
>
> #define cmpxchg_acquire(ptr, ...) \
> ({ \
> typeof(ptr) __ai_ptr = (ptr); \
> - instrument_atomic_write(__ai_ptr, sizeof(*__ai_ptr)); \
> + instrument_atomic_read_write(__ai_ptr, sizeof(*__ai_ptr)); \
> arch_cmpxchg_acquire(__ai_ptr, __VA_ARGS__); \
> })
>
> #define cmpxchg_release(ptr, ...) \
> ({ \
> typeof(ptr) __ai_ptr = (ptr); \
> - instrument_atomic_write(__ai_ptr, sizeof(*__ai_ptr)); \
> + instrument_atomic_read_write(__ai_ptr, sizeof(*__ai_ptr)); \
> arch_cmpxchg_release(__ai_ptr, __VA_ARGS__); \
> })
>
> #define cmpxchg_relaxed(ptr, ...) \
> ({ \
> typeof(ptr) __ai_ptr = (ptr); \
> - instrument_atomic_write(__ai_ptr, sizeof(*__ai_ptr)); \
> + instrument_atomic_read_write(__ai_ptr, sizeof(*__ai_ptr)); \
> arch_cmpxchg_relaxed(__ai_ptr, __VA_ARGS__); \
> })
>
> #define cmpxchg64(ptr, ...) \
> ({ \
> typeof(ptr) __ai_ptr = (ptr); \
> - instrument_atomic_write(__ai_ptr, sizeof(*__ai_ptr)); \
> + instrument_atomic_read_write(__ai_ptr, sizeof(*__ai_ptr)); \
> arch_cmpxchg64(__ai_ptr, __VA_ARGS__); \
> })
>
> #define cmpxchg64_acquire(ptr, ...) \
> ({ \
> typeof(ptr) __ai_ptr = (ptr); \
> - instrument_atomic_write(__ai_ptr, sizeof(*__ai_ptr)); \
> + instrument_atomic_read_write(__ai_ptr, sizeof(*__ai_ptr)); \
> arch_cmpxchg64_acquire(__ai_ptr, __VA_ARGS__); \
> })
>
> #define cmpxchg64_release(ptr, ...) \
> ({ \
> typeof(ptr) __ai_ptr = (ptr); \
> - instrument_atomic_write(__ai_ptr, sizeof(*__ai_ptr)); \
> + instrument_atomic_read_write(__ai_ptr, sizeof(*__ai_ptr)); \
> arch_cmpxchg64_release(__ai_ptr, __VA_ARGS__); \
> })
>
> #define cmpxchg64_relaxed(ptr, ...) \
> ({ \
> typeof(ptr) __ai_ptr = (ptr); \
> - instrument_atomic_write(__ai_ptr, sizeof(*__ai_ptr)); \
> + instrument_atomic_read_write(__ai_ptr, sizeof(*__ai_ptr)); \
> arch_cmpxchg64_relaxed(__ai_ptr, __VA_ARGS__); \
> })
>
> @@ -1843,8 +1843,8 @@ atomic_long_dec_if_positive(atomic_long_
> ({ \
> typeof(ptr) __ai_ptr = (ptr); \
> typeof(oldp) __ai_oldp = (oldp); \
> - instrument_atomic_write(__ai_ptr, sizeof(*__ai_ptr)); \
> - instrument_atomic_write(__ai_oldp, sizeof(*__ai_oldp)); \
> + instrument_atomic_read_write(__ai_ptr, sizeof(*__ai_ptr)); \
> + instrument_read_write(__ai_oldp, sizeof(*__ai_oldp)); \
> arch_try_cmpxchg(__ai_ptr, __ai_oldp, __VA_ARGS__); \
> })
>
> @@ -1852,8 +1852,8 @@ atomic_long_dec_if_positive(atomic_long_
> ({ \
> typeof(ptr) __ai_ptr = (ptr); \
> typeof(oldp) __ai_oldp = (oldp); \
> - instrument_atomic_write(__ai_ptr, sizeof(*__ai_ptr)); \
> - instrument_atomic_write(__ai_oldp, sizeof(*__ai_oldp)); \
> + instrument_atomic_read_write(__ai_ptr, sizeof(*__ai_ptr)); \
> + instrument_read_write(__ai_oldp, sizeof(*__ai_oldp)); \
> arch_try_cmpxchg_acquire(__ai_ptr, __ai_oldp, __VA_ARGS__); \
> })
>
> @@ -1861,8 +1861,8 @@ atomic_long_dec_if_positive(atomic_long_
> ({ \
> typeof(ptr) __ai_ptr = (ptr); \
> typeof(oldp) __ai_oldp = (oldp); \
> - instrument_atomic_write(__ai_ptr, sizeof(*__ai_ptr)); \
> - instrument_atomic_write(__ai_oldp, sizeof(*__ai_oldp)); \
> + instrument_atomic_read_write(__ai_ptr, sizeof(*__ai_ptr)); \
> + instrument_read_write(__ai_oldp, sizeof(*__ai_oldp)); \
> arch_try_cmpxchg_release(__ai_ptr, __ai_oldp, __VA_ARGS__); \
> })
>
> @@ -1870,46 +1870,46 @@ atomic_long_dec_if_positive(atomic_long_
> ({ \
> typeof(ptr) __ai_ptr = (ptr); \
> typeof(oldp) __ai_oldp = (oldp); \
> - instrument_atomic_write(__ai_ptr, sizeof(*__ai_ptr)); \
> - instrument_atomic_write(__ai_oldp, sizeof(*__ai_oldp)); \
> + instrument_atomic_read_write(__ai_ptr, sizeof(*__ai_ptr)); \
> + instrument_read_write(__ai_oldp, sizeof(*__ai_oldp)); \
> arch_try_cmpxchg_relaxed(__ai_ptr, __ai_oldp, __VA_ARGS__); \
> })
>
> #define cmpxchg_local(ptr, ...) \
> ({ \
> typeof(ptr) __ai_ptr = (ptr); \
> - instrument_atomic_write(__ai_ptr, sizeof(*__ai_ptr)); \
> + instrument_atomic_read_write(__ai_ptr, sizeof(*__ai_ptr)); \
> arch_cmpxchg_local(__ai_ptr, __VA_ARGS__); \
> })
>
> #define cmpxchg64_local(ptr, ...) \
> ({ \
> typeof(ptr) __ai_ptr = (ptr); \
> - instrument_atomic_write(__ai_ptr, sizeof(*__ai_ptr)); \
> + instrument_atomic_read_write(__ai_ptr, sizeof(*__ai_ptr)); \
> arch_cmpxchg64_local(__ai_ptr, __VA_ARGS__); \
> })
>
> #define sync_cmpxchg(ptr, ...) \
> ({ \
> typeof(ptr) __ai_ptr = (ptr); \
> - instrument_atomic_write(__ai_ptr, sizeof(*__ai_ptr)); \
> + instrument_atomic_read_write(__ai_ptr, sizeof(*__ai_ptr)); \
> arch_sync_cmpxchg(__ai_ptr, __VA_ARGS__); \
> })
>
> #define cmpxchg_double(ptr, ...) \
> ({ \
> typeof(ptr) __ai_ptr = (ptr); \
> - instrument_atomic_write(__ai_ptr, 2 * sizeof(*__ai_ptr)); \
> + instrument_atomic_read_write(__ai_ptr, 2 * sizeof(*__ai_ptr)); \
> arch_cmpxchg_double(__ai_ptr, __VA_ARGS__); \
> })
>
> -
> #define cmpxchg_double_local(ptr, ...) \
> ({ \
> typeof(ptr) __ai_ptr = (ptr); \
> - instrument_atomic_write(__ai_ptr, 2 * sizeof(*__ai_ptr)); \
> + instrument_atomic_read_write(__ai_ptr, 2 * sizeof(*__ai_ptr)); \
> arch_cmpxchg_double_local(__ai_ptr, __VA_ARGS__); \
> })
>
> +
> #endif /* _LINUX_ATOMIC_INSTRUMENTED_H */
> -// 2a9553f0a9d5619f19151092df5cabbbf16ce835
> +// 66cdf9a0e0a995cba29c61baf018f7ef35974ae5
> --- a/scripts/atomic/atomic-tbl.sh
> +++ b/scripts/atomic/atomic-tbl.sh
> @@ -15,7 +15,7 @@ meta_in()
> #meta_has_ret(meta)
> meta_has_ret()
> {
> - meta_in "$1" "bBiIfFlR"
> + meta_in "$1" "bBiIfFlRm"
> }
>
> #meta_has_acquire(meta)
> @@ -36,6 +36,12 @@ meta_has_relaxed()
> meta_in "$1" "BFIR"
> }
>
> +#meta_has_macro(meta)
> +meta_has_macro()
> +{
> + meta_in "$1" "mn"
> +}
> +
> #find_fallback_template(pfx, name, sfx, order)
> find_fallback_template()
> {
> --- a/scripts/atomic/atomics.tbl
> +++ b/scripts/atomic/atomics.tbl
> @@ -10,12 +10,17 @@
> # * F/f - fetch: returns base type (has fetch_ variants)
> # * l - load: returns base type (has _acquire order variant)
> # * s - store: returns void (has _release order variant)
> +# * m - macro: with return value
> +# * n - macro: with No return value
> #
> # Where args contains list of type[:name], where type is:
> # * cv - const pointer to atomic base type (atomic_t/atomic64_t/atomic_long_t)
> # * v - pointer to atomic base type (atomic_t/atomic64_t/atomic_long_t)
> +# * P - pointer to pair of atomic base type
> # * i - base type (int/s64/long)
> # * p - pointer to base type (int/s64/long)
> +# * L - label for exception case
> +# * V:... - vararg
> #
> read l cv
> set s v i
> --- a/scripts/atomic/gen-atomic-fallback.sh
> +++ b/scripts/atomic/gen-atomic-fallback.sh
> @@ -27,7 +27,9 @@ gen_template_fallback()
> if [ ! -z "${template}" ]; then
> printf "#ifndef ${atomicname}\n"
> . ${template}
> - printf "#define ${atomicname} ${atomicname}\n"
> + if ! meta_has_macro "${meta}"; then
> + printf "#define ${atomicname} ${atomicname}\n"
> + fi
> printf "#endif\n\n"
> fi
> }
> --- a/scripts/atomic/gen-atomic-instrumented.sh
> +++ b/scripts/atomic/gen-atomic-instrumented.sh
> @@ -13,9 +13,15 @@ gen_param_check()
> local type="${arg%%:*}"
> local name="$(gen_param_name "${arg}")"
> local rw="write"
> + local pfx;
> + local mult;
>
> case "${type#c}" in
> + v) pfx="atomic_";;
> + P) pfx="atomic_"; mult="2 * ";;
> i) return;;
> + L) return;;
> + V) return;;
> esac
>
> if [ ${type#c} != ${type} ]; then
> @@ -27,7 +33,16 @@ gen_param_check()
> rw="read_write"
> fi
>
> - printf "\tinstrument_atomic_${rw}(${name}, sizeof(*${name}));\n"
> + if meta_has_macro "${meta}"; then
> + name="__ai_${name}"
> + fi
> +
> + printf "\tinstrument_${pfx}${rw}(${name}, ${mult}sizeof(*${name}));"
> + if meta_has_macro "${meta}"; then
> + printf " \\"
> + fi
> + printf "\n"
> +
> }
>
> #gen_params_checks(meta, arg...)
> @@ -41,6 +56,52 @@ gen_params_checks()
> done
> }
>
> +#gen_var(arg)
> +gen_var()
> +{
> + local type="${1%%:*}"
> + local name="$(gen_param_name "$1")"
> +
> + case "${type#c}" in
> + L) return;;
> + V) return;;
> + esac
> +
> + printf "\ttypeof(${name}) __ai_${name} = (${name}); \\\\\n";
> +}
> +
> +#gen_vars(arg...)
> +gen_vars()
> +{
> + while [ "$#" -gt 0 ]; do
> + gen_var "$1"
> + shift
> + done
> +}
> +
> +#gen_varg(arg)
> +gen_varg()
> +{
> + local type="${1%%:*}"
> + local name="$(gen_param_name "$1")"
> +
> + case "${type#c}" in
> + L) printf "${name}";;
> + V) printf "__VA_ARGS__";;
> + *) printf "__ai_${name}";;
> + esac
> +}
> +
> +#gen_vargs(arg...)
> +gen_vargs()
> +{
> + while [ "$#" -gt 0 ]; do
> + printf "$(gen_varg "$1")"
> + [ "$#" -gt 1 ] && printf ", "
> + shift
> + done
> +}
> +
> #gen_proto_order_variant(meta, pfx, name, sfx, order, atomic, int, arg...)
> gen_proto_order_variant()
> {
> @@ -51,57 +112,49 @@ gen_proto_order_variant()
> local order="$1"; shift
> local atomic="$1"; shift
> local int="$1"; shift
> + local atomicname;
>
> - local atomicname="${atomic}_${pfx}${name}${sfx}${order}"
> + if [ -n "${atomic}" ]; then
> + atomicname="${atomic}_${pfx}${name}${sfx}${order}"
> + else
> + atomicname="${pfx}${name}${sfx}${order}"
> + fi
>
> - local ret="$(gen_ret_type "${meta}" "${int}")"
> - local params="$(gen_params "${int}" "${atomic}" "$@")"
> local checks="$(gen_params_checks "${meta}" "$@")"
> local args="$(gen_args "$@")"
> - local retstmt="$(gen_ret_stmt "${meta}")"
> -
> -cat <<EOF
> -static __always_inline ${ret}
> -${atomicname}(${params})
> -{
> -${checks}
> - ${retstmt}arch_${atomicname}(${args});
> -}
> -EOF
>
> - printf "\n"
> -}
> -
> -gen_xchg()
> -{
> - local xchg="$1"; shift
> - local mult="$1"; shift
> + if meta_has_macro "${meta}"; then
>
> - if [ "${xchg%${xchg#try_cmpxchg}}" = "try_cmpxchg" ] ; then
> + local vars="$(gen_vars "$@")"
> + local vargs="$(gen_vargs "$@")"
>
> cat <<EOF
> -#define ${xchg}(ptr, oldp, ...) \\
> +#define ${atomicname}(${args}) \\
> ({ \\
> - typeof(ptr) __ai_ptr = (ptr); \\
> - typeof(oldp) __ai_oldp = (oldp); \\
> - instrument_atomic_write(__ai_ptr, ${mult}sizeof(*__ai_ptr)); \\
> - instrument_atomic_write(__ai_oldp, ${mult}sizeof(*__ai_oldp)); \\
> - arch_${xchg}(__ai_ptr, __ai_oldp, __VA_ARGS__); \\
> +${vars}
> +${checks}
> + arch_${atomicname}(${vargs}); \\
> })
> EOF
>
> else
>
> + local ret="$(gen_ret_type "${meta}" "${int}")"
> + local params="$(gen_params "${int}" "${atomic}" "$@")"
> + local retstmt="$(gen_ret_stmt "${meta}")"
> +
> cat <<EOF
> -#define ${xchg}(ptr, ...) \\
> -({ \\
> - typeof(ptr) __ai_ptr = (ptr); \\
> - instrument_atomic_write(__ai_ptr, ${mult}sizeof(*__ai_ptr)); \\
> - arch_${xchg}(__ai_ptr, __VA_ARGS__); \\
> -})
> +static __always_inline ${ret}
> +${atomicname}(${params})
> +{
> +${checks}
> + ${retstmt}arch_${atomicname}(${args});
> +}
> EOF
>
> fi
> +
> + printf "\n"
> }
>
> cat << EOF
> @@ -142,24 +195,23 @@ grep '^[a-z]' "$1" | while read name met
> gen_proto "${meta}" "${name}" "atomic_long" "long" ${args}
> done
>
> -
> -for xchg in "xchg" "cmpxchg" "cmpxchg64" "try_cmpxchg"; do
> +for xchg in "xchg" "cmpxchg" "cmpxchg64"; do
> for order in "" "_acquire" "_release" "_relaxed"; do
> - gen_xchg "${xchg}${order}" ""
> - printf "\n"
> + gen_proto_order_variant "m" "" "${xchg}" "" "${order}" "" "" "v:ptr" "V:..."
> done
> done
>
> -for xchg in "cmpxchg_local" "cmpxchg64_local" "sync_cmpxchg"; do
> - gen_xchg "${xchg}" ""
> - printf "\n"
> +for order in "" "_acquire" "_release" "_relaxed"; do
> + gen_proto_order_variant "m" "" "try_cmpxchg" "" "${order}" "" "" "v:ptr" "p:oldp" "V:..."
> done
>
> -gen_xchg "cmpxchg_double" "2 * "
> -
> -printf "\n\n"
> +for xchg in "cmpxchg_local" "cmpxchg64_local" "sync_cmpxchg"; do
> + gen_proto_order_variant "m" "" "${xchg}" "" "" "" "" "v:ptr" "V:..."
> +done
>
> -gen_xchg "cmpxchg_double_local" "2 * "
> +for xchg in "cmpxchg_double" "cmpxchg_double_local"; do
> + gen_proto_order_variant "m" "" "${xchg}" "" "" "" "" "P:ptr" "V:..."
> +done
>
> cat <<EOF
>
> --- a/scripts/atomic/gen-atomic-long.sh
> +++ b/scripts/atomic/gen-atomic-long.sh
> @@ -17,16 +17,21 @@ gen_cast()
> printf "($(gen_param_type "${arg}" "${int}" "${atomic}"))"
> }
>
> -#gen_args_cast(int, atomic, arg...)
> +#gen_args_cast(meta, int, atomic, arg...)
> gen_args_cast()
> {
> + local meta=$1; shift
> local int="$1"; shift
> local atomic="$1"; shift
>
> while [ "$#" -gt 0 ]; do
> local cast="$(gen_cast "$1" "${int}" "${atomic}")"
> local arg="$(gen_param_name "$1")"
> - printf "${cast}${arg}"
> + if meta_has_macro "${meta}" && [ "${1%%:*}" != "L" ]; then
> + printf "${cast}(${arg})"
> + else
> + printf "${cast}${arg}"
> + fi
> [ "$#" -gt 1 ] && printf ", "
> shift;
> done
> @@ -40,10 +45,24 @@ gen_proto_order_variant()
> local atomic="$1"; shift
> local int="$1"; shift
>
> - local ret="$(gen_ret_type "${meta}" "long")"
> - local params="$(gen_params "long" "atomic_long" "$@")"
> - local argscast="$(gen_args_cast "${int}" "${atomic}" "$@")"
> - local retstmt="$(gen_ret_stmt "${meta}")"
> + local argscast="$(gen_args_cast "${meta}" "${int}" "${atomic}" "$@")"
> +
> + if meta_has_macro "${meta}"; then
> +
> + local args="$(gen_args "$@")"
> +
> +cat <<EOF
> +#define arch_atomic_long_${name}(${args}) \\
> +({ \\
> + arch_${atomic}_${name}(${argscast}) \\
> +})
> +
> +EOF
> + else
> +
> + local ret="$(gen_ret_type "${meta}" "long")"
> + local params="$(gen_params "long" "atomic_long" "$@")"
> + local retstmt="$(gen_ret_stmt "${meta}")"
>
> cat <<EOF
> static __always_inline ${ret}
> @@ -53,6 +72,7 @@ arch_atomic_long_${name}(${params})
> }
>
> EOF
> + fi
> }
>
> cat << EOF
>
>
^ permalink raw reply [flat|nested] 34+ messages in thread
* Re: [PATCH v2 0/9] refcount: Improve code-gen
2021-12-10 16:16 [PATCH v2 0/9] refcount: Improve code-gen Peter Zijlstra
` (8 preceding siblings ...)
2021-12-10 16:16 ` [PATCH v2 9/9] refcount: Optimize __refcount_add_not_zero(.i=1) Peter Zijlstra
@ 2021-12-10 19:37 ` Peter Zijlstra
2021-12-13 12:15 ` [PATCH v2 10/9] atomic: Document the atomic_{}_overflow() functions Peter Zijlstra
2021-12-13 12:20 ` [PATCH v2 0/9] refcount: Improve code-gen Peter Zijlstra
11 siblings, 0 replies; 34+ messages in thread
From: Peter Zijlstra @ 2021-12-10 19:37 UTC (permalink / raw)
To: will, boqun.feng
Cc: linux-kernel, x86, mark.rutland, elver, keescook, hch, torvalds, axboe
On Fri, Dec 10, 2021 at 05:16:18PM +0100, Peter Zijlstra wrote:
> Hi,
>
> Now with Linus' favourite refcount scheme on :-)
>
> Changes since RFC:
>
> - more cleanups in scripts/atomic/
> - rename atomic_*_ofl() to atomic_*_overflow() (null)
> - alternative x86 refcount scheme (Linus)
> - fix for refcount_dec_not_one()
> - opt __refcount_add_not_zero(.i=1)
>
> Boots x86_64 and builds a kernel.
All patches, including review comments so far (including dec;js) now at:
git://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git locking/wip.refcount
I'll see if I can update the documentation patch this weekend, otherwise
there's always next week :-)
^ permalink raw reply [flat|nested] 34+ messages in thread
* Re: [PATCH v2 2/9] atomic: Add xchg.tbl
2021-12-10 16:16 ` [PATCH v2 2/9] atomic: Add xchg.tbl Peter Zijlstra
@ 2021-12-13 9:50 ` Mark Rutland
0 siblings, 0 replies; 34+ messages in thread
From: Mark Rutland @ 2021-12-13 9:50 UTC (permalink / raw)
To: Peter Zijlstra
Cc: will, boqun.feng, linux-kernel, x86, elver, keescook, hch,
torvalds, axboe
On Fri, Dec 10, 2021 at 05:16:20PM +0100, Peter Zijlstra wrote:
> The tail of gen-atomic-instrumented.sh now looks like a hard-coded
> variant of atomics.tbl, extract it into xchg.tbl.
>
> Add meta-'M' to generate the order variants.
>
> No change in generated files.
>
> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Nice!
I had a look as to whether it was worthwhile passing in xhcg.tbl as a script
argument as with atomics.tbl, but that meant either padding a redundant arg to
the other scripts or complicating gen-atomics.sh, and would need more
refactoring of scripting, so I think this is fine as-is.
This all looks good to me, and I can confirm no changes when regenerating the
headers:
Reviewed-by: Mark Rutland <mark.rutland@arm.com>
Thanks,
Mark.
> ---
> scripts/atomic/atomic-tbl.sh | 10 +++++-----
> scripts/atomic/atomics.tbl | 2 +-
> scripts/atomic/gen-atomic-instrumented.sh | 18 ++----------------
> scripts/atomic/xchg.tbl | 13 +++++++++++++
> 4 files changed, 21 insertions(+), 22 deletions(-)
>
> --- a/scripts/atomic/atomic-tbl.sh
> +++ b/scripts/atomic/atomic-tbl.sh
> @@ -15,31 +15,31 @@ meta_in()
> #meta_has_ret(meta)
> meta_has_ret()
> {
> - meta_in "$1" "bBiIfFlRm"
> + meta_in "$1" "bBiIfFlRMm"
> }
>
> #meta_has_acquire(meta)
> meta_has_acquire()
> {
> - meta_in "$1" "BFIlR"
> + meta_in "$1" "BFIlRM"
> }
>
> #meta_has_release(meta)
> meta_has_release()
> {
> - meta_in "$1" "BFIRs"
> + meta_in "$1" "BFIRsM"
> }
>
> #meta_has_relaxed(meta)
> meta_has_relaxed()
> {
> - meta_in "$1" "BFIR"
> + meta_in "$1" "BFIRM"
> }
>
> #meta_has_macro(meta)
> meta_has_macro()
> {
> - meta_in "$1" "mn"
> + meta_in "$1" "Mmn"
> }
>
> #find_fallback_template(pfx, name, sfx, order)
> --- a/scripts/atomic/atomics.tbl
> +++ b/scripts/atomic/atomics.tbl
> @@ -10,7 +10,7 @@
> # * F/f - fetch: returns base type (has fetch_ variants)
> # * l - load: returns base type (has _acquire order variant)
> # * s - store: returns void (has _release order variant)
> -# * m - macro: with return value
> +# * M/m - macro: with return value
> # * n - macro: with No return value
> #
> # Where args contains list of type[:name], where type is:
> --- a/scripts/atomic/gen-atomic-instrumented.sh
> +++ b/scripts/atomic/gen-atomic-instrumented.sh
> @@ -195,22 +195,8 @@ grep '^[a-z]' "$1" | while read name met
> gen_proto "${meta}" "${name}" "atomic_long" "long" ${args}
> done
>
> -for xchg in "xchg" "cmpxchg" "cmpxchg64"; do
> - for order in "" "_acquire" "_release" "_relaxed"; do
> - gen_proto_order_variant "m" "" "${xchg}" "" "${order}" "" "" "v:ptr" "V:..."
> - done
> -done
> -
> -for order in "" "_acquire" "_release" "_relaxed"; do
> - gen_proto_order_variant "m" "" "try_cmpxchg" "" "${order}" "" "" "v:ptr" "p:oldp" "V:..."
> -done
> -
> -for xchg in "cmpxchg_local" "cmpxchg64_local" "sync_cmpxchg"; do
> - gen_proto_order_variant "m" "" "${xchg}" "" "" "" "" "v:ptr" "V:..."
> -done
> -
> -for xchg in "cmpxchg_double" "cmpxchg_double_local"; do
> - gen_proto_order_variant "m" "" "${xchg}" "" "" "" "" "P:ptr" "V:..."
> +grep '^[a-z]' $(dirname $1)/xchg.tbl | while read name meta args; do
> + gen_proto "${meta}" "${name}" "" "" ${args}
> done
>
> cat <<EOF
> --- /dev/null
> +++ b/scripts/atomic/xchg.tbl
> @@ -0,0 +1,13 @@
> +# name meta args...
> +#
> +# see atomics.tbl for a description of meta and args...
> +#
> +xchg M v:ptr V:...
> +cmpxchg M v:ptr V:...
> +cmpxchg64 M v:ptr V:...
> +try_cmpxchg M v:ptr p:oldp V:...
> +cmpxchg_local m v:ptr V:...
> +cmpxchg64_local m v:ptr V:...
> +sync_cmpxchg m v:ptr V:...
> +cmpxchg_double m P:ptr V:...
> +cmpxchg_double_local m P:ptr V:...
>
>
^ permalink raw reply [flat|nested] 34+ messages in thread
* Re: [PATCH v2 3/9] atomic: Introduce atomic_{inc,dec,dec_and_test}_overflow()
2021-12-10 16:16 ` [PATCH v2 3/9] atomic: Introduce atomic_{inc,dec,dec_and_test}_overflow() Peter Zijlstra
@ 2021-12-13 10:06 ` Mark Rutland
2021-12-13 10:57 ` Peter Zijlstra
2021-12-13 10:59 ` Peter Zijlstra
0 siblings, 2 replies; 34+ messages in thread
From: Mark Rutland @ 2021-12-13 10:06 UTC (permalink / raw)
To: Peter Zijlstra
Cc: will, boqun.feng, linux-kernel, x86, elver, keescook, hch,
torvalds, axboe
On Fri, Dec 10, 2021 at 05:16:21PM +0100, Peter Zijlstra wrote:
> In order to facilitate architecture support for refcount_t, introduce
> a number of new atomic primitives that have a uaccess style exception
> for overflow.
>
> Notably:
>
> atomic_inc_overflow(v, Label):
>
> increment and goto Label when the old value of v is zero or
> negative.
>
> atomic_dec_overflow(v, Label):
>
> decrement and goto Label when the new value of v is zero or
> negative
>
> atomic_dec_and_test_overflow(v, Label):
>
> decrement and return true when the result is zero and goto
> Label when the new value of v is negative
Maybe it's worth adding these as comments in the fallback, which we have for a
few existing functions, e.g.
| /**
| * arch_${atomic}_add_negative - add and test if negative
| * @i: integer value to add
| * @v: pointer of type ${atomic}_t
| *
| * Atomically adds @i to @v and returns true
| * if the result is negative, or false when
| * result is greater than or equal to zero.
| */
| static __always_inline bool
| arch_${atomic}_add_negative(${int} i, ${atomic}_t *v)
| {
| return arch_${atomic}_add_return(i, v) < 0;
| }
Not a big deal either way.
>
> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
> ---
> include/linux/atomic/atomic-arch-fallback.h | 64 ++++++++++++++++++++++++
> include/linux/atomic/atomic-instrumented.h | 65 ++++++++++++++++++++++++-
> include/linux/atomic/atomic-long.h | 32 +++++++++++-
> scripts/atomic/atomics.tbl | 3 +
> scripts/atomic/fallbacks/dec_and_test_overflow | 12 ++++
> scripts/atomic/fallbacks/dec_overflow | 8 +++
> scripts/atomic/fallbacks/inc_overflow | 8 +++
> 7 files changed, 189 insertions(+), 3 deletions(-)
>
> --- a/include/linux/atomic/atomic-arch-fallback.h
> +++ b/include/linux/atomic/atomic-arch-fallback.h
> @@ -1250,6 +1250,37 @@ arch_atomic_dec_if_positive(atomic_t *v)
> #define arch_atomic_dec_if_positive arch_atomic_dec_if_positive
> #endif
>
> +#ifndef arch_atomic_inc_overflow
> +#define arch_atomic_inc_overflow(_v, _label) \
> +do { \
> + int __old = arch_atomic_fetch_inc(_v); \
> + if (unlikely(__old <= 0)) \
> + goto _label; \
> +} while (0)
> +#endif
> +
> +#ifndef arch_atomic_dec_overflow
> +#define arch_atomic_dec_overflow(_v, _label) \
> +do { \
> + int __new = arch_atomic_dec_return(_v); \
> + if (unlikely(__new <= 0)) \
> + goto _label; \
> +} while (0)
> +#endif
> +
> +#ifndef arch_atomic_dec_and_test_overflow
> +#define arch_atomic_dec_and_test_overflow(_v, _label) \
> +({ \
> + bool __ret = false; \
> + int __new = arch_atomic_dec_return(_v); \
> + if (unlikely(__new < 0)) \
> + goto _label; \
> + if (unlikely(__new == 0)) \
> + __ret = true; \
> + __ret; \
> +})
> +#endif
I had wanted to move at least part of this to a function to ensure
single-evaluation and avoid accidental symbol aliasing, but (as we discussed
over IRC) I couldn't find any good way to do so, and given this is sufficiently
specialise I think we should be ok with this as-is. It's certainly no worse
than the existing stuff for xchg/cmpxchg.
With that in mind, these (and the other variants, and the underlying fallback
templates) all look good to me.
With or without the comments as above:
Reviewed-by: Mark Rutland <mark.rutland@arm.com>
Mark.
> +
> #ifdef CONFIG_GENERIC_ATOMIC64
> #include <asm-generic/atomic64.h>
> #endif
> @@ -2357,5 +2388,36 @@ arch_atomic64_dec_if_positive(atomic64_t
> #define arch_atomic64_dec_if_positive arch_atomic64_dec_if_positive
> #endif
>
> +#ifndef arch_atomic64_inc_overflow
> +#define arch_atomic64_inc_overflow(_v, _label) \
> +do { \
> + s64 __old = arch_atomic64_fetch_inc(_v); \
> + if (unlikely(__old <= 0)) \
> + goto _label; \
> +} while (0)
> +#endif
> +
> +#ifndef arch_atomic64_dec_overflow
> +#define arch_atomic64_dec_overflow(_v, _label) \
> +do { \
> + s64 __new = arch_atomic64_dec_return(_v); \
> + if (unlikely(__new <= 0)) \
> + goto _label; \
> +} while (0)
> +#endif
> +
> +#ifndef arch_atomic64_dec_and_test_overflow
> +#define arch_atomic64_dec_and_test_overflow(_v, _label) \
> +({ \
> + bool __ret = false; \
> + s64 __new = arch_atomic64_dec_return(_v); \
> + if (unlikely(__new < 0)) \
> + goto _label; \
> + if (unlikely(__new == 0)) \
> + __ret = true; \
> + __ret; \
> +})
> +#endif
> +
> #endif /* _LINUX_ATOMIC_FALLBACK_H */
> -// cca554917d7ea73d5e3e7397dd70c484cad9b2c4
> +// e4c677b23b3fd5e8dc4bce9d6c055103666cfc4a
> --- a/include/linux/atomic/atomic-instrumented.h
> +++ b/include/linux/atomic/atomic-instrumented.h
> @@ -599,6 +599,27 @@ atomic_dec_if_positive(atomic_t *v)
> return arch_atomic_dec_if_positive(v);
> }
>
> +#define atomic_inc_overflow(v, L) \
> +({ \
> + typeof(v) __ai_v = (v); \
> + instrument_atomic_read_write(__ai_v, sizeof(*__ai_v)); \
> + arch_atomic_inc_overflow(__ai_v, L); \
> +})
> +
> +#define atomic_dec_overflow(v, L) \
> +({ \
> + typeof(v) __ai_v = (v); \
> + instrument_atomic_read_write(__ai_v, sizeof(*__ai_v)); \
> + arch_atomic_dec_overflow(__ai_v, L); \
> +})
> +
> +#define atomic_dec_and_test_overflow(v, L) \
> +({ \
> + typeof(v) __ai_v = (v); \
> + instrument_atomic_read_write(__ai_v, sizeof(*__ai_v)); \
> + arch_atomic_dec_and_test_overflow(__ai_v, L); \
> +})
> +
> static __always_inline s64
> atomic64_read(const atomic64_t *v)
> {
> @@ -1177,6 +1198,27 @@ atomic64_dec_if_positive(atomic64_t *v)
> return arch_atomic64_dec_if_positive(v);
> }
>
> +#define atomic64_inc_overflow(v, L) \
> +({ \
> + typeof(v) __ai_v = (v); \
> + instrument_atomic_read_write(__ai_v, sizeof(*__ai_v)); \
> + arch_atomic64_inc_overflow(__ai_v, L); \
> +})
> +
> +#define atomic64_dec_overflow(v, L) \
> +({ \
> + typeof(v) __ai_v = (v); \
> + instrument_atomic_read_write(__ai_v, sizeof(*__ai_v)); \
> + arch_atomic64_dec_overflow(__ai_v, L); \
> +})
> +
> +#define atomic64_dec_and_test_overflow(v, L) \
> +({ \
> + typeof(v) __ai_v = (v); \
> + instrument_atomic_read_write(__ai_v, sizeof(*__ai_v)); \
> + arch_atomic64_dec_and_test_overflow(__ai_v, L); \
> +})
> +
> static __always_inline long
> atomic_long_read(const atomic_long_t *v)
> {
> @@ -1755,6 +1797,27 @@ atomic_long_dec_if_positive(atomic_long_
> return arch_atomic_long_dec_if_positive(v);
> }
>
> +#define atomic_long_inc_overflow(v, L) \
> +({ \
> + typeof(v) __ai_v = (v); \
> + instrument_atomic_read_write(__ai_v, sizeof(*__ai_v)); \
> + arch_atomic_long_inc_overflow(__ai_v, L); \
> +})
> +
> +#define atomic_long_dec_overflow(v, L) \
> +({ \
> + typeof(v) __ai_v = (v); \
> + instrument_atomic_read_write(__ai_v, sizeof(*__ai_v)); \
> + arch_atomic_long_dec_overflow(__ai_v, L); \
> +})
> +
> +#define atomic_long_dec_and_test_overflow(v, L) \
> +({ \
> + typeof(v) __ai_v = (v); \
> + instrument_atomic_read_write(__ai_v, sizeof(*__ai_v)); \
> + arch_atomic_long_dec_and_test_overflow(__ai_v, L); \
> +})
> +
> #define xchg(ptr, ...) \
> ({ \
> typeof(ptr) __ai_ptr = (ptr); \
> @@ -1912,4 +1975,4 @@ atomic_long_dec_if_positive(atomic_long_
>
>
> #endif /* _LINUX_ATOMIC_INSTRUMENTED_H */
> -// 66cdf9a0e0a995cba29c61baf018f7ef35974ae5
> +// 702806891ef1d01d76767c55088264ab6a1ef77d
> --- a/include/linux/atomic/atomic-long.h
> +++ b/include/linux/atomic/atomic-long.h
> @@ -515,6 +515,21 @@ arch_atomic_long_dec_if_positive(atomic_
> return arch_atomic64_dec_if_positive(v);
> }
>
> +#define arch_atomic_long_inc_overflow(v, L) \
> +({ \
> + arch_atomic64_inc_overflow((v), L) \
> +})
> +
> +#define arch_atomic_long_dec_overflow(v, L) \
> +({ \
> + arch_atomic64_dec_overflow((v), L) \
> +})
> +
> +#define arch_atomic_long_dec_and_test_overflow(v, L) \
> +({ \
> + arch_atomic64_dec_and_test_overflow((v), L) \
> +})
> +
> #else /* CONFIG_64BIT */
>
> static __always_inline long
> @@ -1009,6 +1024,21 @@ arch_atomic_long_dec_if_positive(atomic_
> return arch_atomic_dec_if_positive(v);
> }
>
> +#define arch_atomic_long_inc_overflow(v, L) \
> +({ \
> + arch_atomic_inc_overflow((v), L) \
> +})
> +
> +#define arch_atomic_long_dec_overflow(v, L) \
> +({ \
> + arch_atomic_dec_overflow((v), L) \
> +})
> +
> +#define arch_atomic_long_dec_and_test_overflow(v, L) \
> +({ \
> + arch_atomic_dec_and_test_overflow((v), L) \
> +})
> +
> #endif /* CONFIG_64BIT */
> #endif /* _LINUX_ATOMIC_LONG_H */
> -// e8f0e08ff072b74d180eabe2ad001282b38c2c88
> +// 487bc4fea91f23f2a4b42af7d5b49ef9172ae792
> --- a/scripts/atomic/atomics.tbl
> +++ b/scripts/atomic/atomics.tbl
> @@ -44,3 +44,6 @@ inc_not_zero b v
> inc_unless_negative b v
> dec_unless_positive b v
> dec_if_positive i v
> +inc_overflow n v L
> +dec_overflow n v L
> +dec_and_test_overflow m v L
> --- /dev/null
> +++ b/scripts/atomic/fallbacks/dec_and_test_overflow
> @@ -0,0 +1,12 @@
> +cat << EOF
> +#define arch_${atomic}_dec_and_test_overflow(_v, _label) \\
> +({ \\
> + bool __ret = false; \\
> + ${int} __new = arch_${atomic}_dec_return(_v); \\
> + if (unlikely(__new < 0)) \\
> + goto _label; \\
> + if (unlikely(__new == 0)) \\
> + __ret = true; \\
> + __ret; \\
> +})
> +EOF
> --- /dev/null
> +++ b/scripts/atomic/fallbacks/dec_overflow
> @@ -0,0 +1,8 @@
> +cat << EOF
> +#define arch_${atomic}_dec_overflow(_v, _label) \\
> +do { \\
> + ${int} __new = arch_${atomic}_dec_return(_v); \\
> + if (unlikely(__new <= 0)) \\
> + goto _label; \\
> +} while (0)
> +EOF
> --- /dev/null
> +++ b/scripts/atomic/fallbacks/inc_overflow
> @@ -0,0 +1,8 @@
> +cat << EOF
> +#define arch_${atomic}_inc_overflow(_v, _label) \\
> +do { \\
> + ${int} __old = arch_${atomic}_fetch_inc(_v); \\
> + if (unlikely(__old <= 0)) \\
> + goto _label; \\
> +} while (0)
> +EOF
>
>
^ permalink raw reply [flat|nested] 34+ messages in thread
* Re: [PATCH v2 4/9] refcount: Use atomic_*_overflow()
2021-12-10 16:16 ` [PATCH v2 4/9] refcount: Use atomic_*_overflow() Peter Zijlstra
@ 2021-12-13 10:35 ` Mark Rutland
0 siblings, 0 replies; 34+ messages in thread
From: Mark Rutland @ 2021-12-13 10:35 UTC (permalink / raw)
To: Peter Zijlstra
Cc: will, boqun.feng, linux-kernel, x86, elver, keescook, hch,
torvalds, axboe
On Fri, Dec 10, 2021 at 05:16:22PM +0100, Peter Zijlstra wrote:
> Use the shiny new atomic_*_overflow() functions in order to have better
> code-gen.
>
> Strictly speaking, these ops operate on [0, INT_MIN] rather than
> [0, INT_MAX] but this is harmless. At worst another op finds the
> refcount is negative and goes saturate, which is always a possibility
> anyway.
>
> Notably refcount_inc() case no longer distinguishes between
> inc-from-zero and inc-negative in the fast path, this improves
> code-gen:
>
> 4b88: b8 01 00 00 00 mov $0x1,%eax
> 4b8d: f0 0f c1 43 28 lock xadd %eax,0x28(%rbx)
> 4b92: 85 c0 test %eax,%eax
> 4b94: 74 1b je 4bb1 <alloc_perf_context+0xf1>
> 4b96: 8d 50 01 lea 0x1(%rax),%edx
> 4b99: 09 c2 or %eax,%edx
> 4b9b: 78 20 js 4bbd <alloc_perf_context+0xfd>
>
> to:
>
> 4768: b8 01 00 00 00 mov $0x1,%eax
> 476d: f0 0f c1 43 28 lock xadd %eax,0x28(%rbx)
> 4772: 85 c0 test %eax,%eax
> 4774: 7e 14 jle 478a <alloc_perf_context+0xea>
With GCC 11.1.0 (and my LSE cleanup), arm64 gets similar:
40e8: 52800024 mov w4, #0x1 // #1
...
4118: b8e40001 ldaddal w4, w1, [x0]
411c: 7100003f cmp w1, #0x0
4120: 5400018d b.le 4150 <alloc_perf_context+0xdc>
> without sacrificing on functionality; the only thing that suffers is
> the reported error condition, which might now 'spuriously' report
> 'saturated' instead of 'inc-from-zero'.
Hmm... maybe it's worth a message to cover both cases, since:
"refcount_t: saturated; leaking memory"
... may not look as severe an issue as:
"refcount_t: addition on 0; use-after-free"
Perhaps just:
"refcount_t: leaking memory or use-after-free"
... and don't bother with the racy read when reporting?
> refcount_dec_and_test() is also improved:
>
> aa40: b8 ff ff ff ff mov $0xffffffff,%eax
> aa45: f0 0f c1 07 lock xadd %eax,(%rdi)
> aa49: 83 f8 01 cmp $0x1,%eax
> aa4c: 74 05 je aa53 <ring_buffer_put+0x13>
> aa4e: 85 c0 test %eax,%eax
> aa50: 7e 1e jle aa70 <ring_buffer_put+0x30>
> aa52: c3 ret
>
> to:
>
> a980: b8 ff ff ff ff mov $0xffffffff,%eax
> a985: f0 0f c1 07 lock xadd %eax,(%rdi)
> a989: 83 e8 01 sub $0x1,%eax
> a98c: 78 20 js a9ae <ring_buffer_put+0x2e>
> a98e: 74 01 je a991 <ring_buffer_put+0x11>
> a990: c3 ret
Likewise (with my LSE cleanup) for arm64:
c3ac: 12800001 mov w1, #0xffffffff // #-1
c3b0: b8e10001 ldaddal w1, w1, [x0]
c3b4: 51000421 sub w1, w1, #0x1
c3b8: 7100003f cmp w1, #0x0
c3bc: 5400012b b.lt c3e0 <ring_buffer_put+0x4c> // b.tstop
c3c0: 540001a0 b.eq c3f4 <ring_buffer_put+0x60> // b.none
AFAICT the compiler *should* be able to use a single `MOVS` in place of that
`SUB; CMP`, and I think that's either a missed optimization or an artifact of
something in my LSE patches.
> XXX atomic_dec_and_test_overflow() is strictly stronger ordered than
> refcount_dec_and_test() is defined -- Power and Arrghh64 ?
I'll leave the ordering to Will.
As this stands (or with the warning rewrite):
Reviewed-by: Mark Rutland <mark.rutland@arm.com>
Mark.
>
> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
> ---
> include/linux/refcount.h | 17 +++++++++++++----
> lib/refcount.c | 5 +++++
> 2 files changed, 18 insertions(+), 4 deletions(-)
>
> --- a/include/linux/refcount.h
> +++ b/include/linux/refcount.h
> @@ -264,7 +264,10 @@ static inline void __refcount_inc(refcou
> */
> static inline void refcount_inc(refcount_t *r)
> {
> - __refcount_inc(r, NULL);
> + atomic_inc_overflow(&r->refs, Eoverflow);
> + return;
> +Eoverflow:
> + refcount_warn_saturate(r, REFCOUNT_ADD_OVF);
> }
>
> static inline __must_check bool __refcount_sub_and_test(int i, refcount_t *r, int *oldp)
> @@ -330,7 +333,10 @@ static inline __must_check bool __refcou
> */
> static inline __must_check bool refcount_dec_and_test(refcount_t *r)
> {
> - return __refcount_dec_and_test(r, NULL);
> + return atomic_dec_and_test_overflow(&r->refs, Eoverflow);
> +Eoverflow:
> + refcount_warn_saturate(r, REFCOUNT_SUB_UAF);
> + return false;
> }
>
> static inline void __refcount_dec(refcount_t *r, int *oldp)
> @@ -340,7 +346,7 @@ static inline void __refcount_dec(refcou
> if (oldp)
> *oldp = old;
>
> - if (unlikely(old <= 1))
> + if (unlikely(old - 1 <= 0))
> refcount_warn_saturate(r, REFCOUNT_DEC_LEAK);
> }
>
> @@ -356,7 +362,10 @@ static inline void __refcount_dec(refcou
> */
> static inline void refcount_dec(refcount_t *r)
> {
> - __refcount_dec(r, NULL);
> + atomic_dec_overflow(&r->refs, Eoverflow);
> + return;
> +Eoverflow:
> + refcount_warn_saturate(r, REFCOUNT_DEC_LEAK);
> }
>
> extern __must_check bool refcount_dec_if_one(refcount_t *r);
> --- a/lib/refcount.c
> +++ b/lib/refcount.c
> @@ -12,8 +12,13 @@
>
> void refcount_warn_saturate(refcount_t *r, enum refcount_saturation_type t)
> {
> + int old = refcount_read(r);
> refcount_set(r, REFCOUNT_SATURATED);
>
> + /* racy; who cares */
> + if (old == 1 && t == REFCOUNT_ADD_OVF)
> + t = REFCOUNT_ADD_UAF;
> +
> switch (t) {
> case REFCOUNT_ADD_NOT_ZERO_OVF:
> REFCOUNT_WARN("saturated; leaking memory");
>
>
^ permalink raw reply [flat|nested] 34+ messages in thread
* Re: [PATCH v2 3/9] atomic: Introduce atomic_{inc,dec,dec_and_test}_overflow()
2021-12-13 10:06 ` Mark Rutland
@ 2021-12-13 10:57 ` Peter Zijlstra
2021-12-13 10:59 ` Peter Zijlstra
1 sibling, 0 replies; 34+ messages in thread
From: Peter Zijlstra @ 2021-12-13 10:57 UTC (permalink / raw)
To: Mark Rutland
Cc: will, boqun.feng, linux-kernel, x86, elver, keescook, hch,
torvalds, axboe
On Mon, Dec 13, 2021 at 10:06:01AM +0000, Mark Rutland wrote:
> On Fri, Dec 10, 2021 at 05:16:21PM +0100, Peter Zijlstra wrote:
> > In order to facilitate architecture support for refcount_t, introduce
> > a number of new atomic primitives that have a uaccess style exception
> > for overflow.
> >
> > Notably:
> >
> > atomic_inc_overflow(v, Label):
> >
> > increment and goto Label when the old value of v is zero or
> > negative.
> >
> > atomic_dec_overflow(v, Label):
> >
> > decrement and goto Label when the new value of v is zero or
> > negative
> >
> > atomic_dec_and_test_overflow(v, Label):
> >
> > decrement and return true when the result is zero and goto
> > Label when the new value of v is negative
>
> Maybe it's worth adding these as comments in the fallback, which we have for a
> few existing functions, e.g.
>
> | /**
> | * arch_${atomic}_add_negative - add and test if negative
> | * @i: integer value to add
> | * @v: pointer of type ${atomic}_t
> | *
> | * Atomically adds @i to @v and returns true
> | * if the result is negative, or false when
> | * result is greater than or equal to zero.
> | */
> | static __always_inline bool
> | arch_${atomic}_add_negative(${int} i, ${atomic}_t *v)
> | {
> | return arch_${atomic}_add_return(i, v) < 0;
> | }
>
> Not a big deal either way.
I can do that; but the whole ATOMIC*_OVERFLOW_OFFSET thing complicates
all this somewhat. Still, let me try, I've gotta document that anyway..
^ permalink raw reply [flat|nested] 34+ messages in thread
* Re: [PATCH v2 3/9] atomic: Introduce atomic_{inc,dec,dec_and_test}_overflow()
2021-12-13 10:06 ` Mark Rutland
2021-12-13 10:57 ` Peter Zijlstra
@ 2021-12-13 10:59 ` Peter Zijlstra
2021-12-13 11:09 ` Mark Rutland
1 sibling, 1 reply; 34+ messages in thread
From: Peter Zijlstra @ 2021-12-13 10:59 UTC (permalink / raw)
To: Mark Rutland
Cc: will, boqun.feng, linux-kernel, x86, elver, keescook, hch,
torvalds, axboe
On Mon, Dec 13, 2021 at 10:06:01AM +0000, Mark Rutland wrote:
> On Fri, Dec 10, 2021 at 05:16:21PM +0100, Peter Zijlstra wrote:
> > +#ifndef arch_atomic_inc_overflow
> > +#define arch_atomic_inc_overflow(_v, _label) \
> > +do { \
> > + int __old = arch_atomic_fetch_inc(_v); \
> > + if (unlikely(__old <= 0)) \
> > + goto _label; \
> > +} while (0)
> > +#endif
> > +
> > +#ifndef arch_atomic_dec_overflow
> > +#define arch_atomic_dec_overflow(_v, _label) \
> > +do { \
> > + int __new = arch_atomic_dec_return(_v); \
> > + if (unlikely(__new <= 0)) \
> > + goto _label; \
> > +} while (0)
> > +#endif
> > +
> > +#ifndef arch_atomic_dec_and_test_overflow
> > +#define arch_atomic_dec_and_test_overflow(_v, _label) \
> > +({ \
> > + bool __ret = false; \
> > + int __new = arch_atomic_dec_return(_v); \
> > + if (unlikely(__new < 0)) \
> > + goto _label; \
> > + if (unlikely(__new == 0)) \
> > + __ret = true; \
> > + __ret; \
> > +})
> > +#endif
>
> I had wanted to move at least part of this to a function to ensure
> single-evaluation and avoid accidental symbol aliasing, but (as we discussed
> over IRC) I couldn't find any good way to do so, and given this is sufficiently
> specialise I think we should be ok with this as-is. It's certainly no worse
> than the existing stuff for xchg/cmpxchg.
Right, as you know I tried the same :-) Anyway, the above macros should
be free of multi-evaluation issues, both _v and _label are only used the
once. Aliassing is always a possibility but minimized by __ prefixing
the local variables.
^ permalink raw reply [flat|nested] 34+ messages in thread
* Re: [PATCH v2 5/9] atomic,x86: Implement atomic_dec_and_test_overflow()
2021-12-10 16:16 ` [PATCH v2 5/9] atomic,x86: Implement atomic_dec_and_test_overflow() Peter Zijlstra
@ 2021-12-13 11:04 ` Mark Rutland
0 siblings, 0 replies; 34+ messages in thread
From: Mark Rutland @ 2021-12-13 11:04 UTC (permalink / raw)
To: Peter Zijlstra
Cc: will, boqun.feng, linux-kernel, x86, elver, keescook, hch,
torvalds, axboe
On Fri, Dec 10, 2021 at 05:16:23PM +0100, Peter Zijlstra wrote:
> Provide a better implementation of atomic_{dec,dec_and_test}_overflow() by
> making use of the atomic-op condition codes.
>
> This further improves the fast path code:
>
> a980: b8 ff ff ff ff mov $0xffffffff,%eax
> a985: f0 0f c1 07 lock xadd %eax,(%rdi)
> a989: 83 e8 01 sub $0x1,%eax
> a98c: 78 20 js a9ae <ring_buffer_put+0x2e>
> a98e: 74 01 je a991 <ring_buffer_put+0x11>
> a990: c3 ret
>
> to:
>
> a950: f0 ff 0f lock decl (%rdi)
> a953: 7c 20 jl a975 <ring_buffer_put+0x25>
> a955: 74 01 je a958 <ring_buffer_put+0x8>
> a957: c3 ret
As a heads-up, for arm64 we probably won't need to roll our own since the LSE
atomics don't have flag-setting versions, and the compiler-generated
comparisons and conditional branches can be better optimized per caller.
Otherwise, I'm going to ignore this patch since I'm not qualified to review x86
asm. :)
Mark.
> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
> ---
> arch/x86/include/asm/atomic.h | 23 +++++++++++++++++++++++
> 1 file changed, 23 insertions(+)
>
> --- a/arch/x86/include/asm/atomic.h
> +++ b/arch/x86/include/asm/atomic.h
> @@ -263,6 +263,29 @@ static __always_inline int arch_atomic_f
> }
> #define arch_atomic_fetch_xor arch_atomic_fetch_xor
>
> +#define arch_atomic_dec_overflow(_v, _label) \
> + asm_volatile_goto(LOCK_PREFIX "decl %[var]\n\t" \
> + "jle %l1" \
> + : : [var] "m" ((_v)->counter) \
> + : "memory" \
> + : _label)
> +
> +#define arch_atomic_dec_and_test_overflow(_v, _label) \
> +({ \
> + __label__ __zero; \
> + __label__ __out; \
> + bool __ret = false; \
> + asm_volatile_goto(LOCK_PREFIX "decl %[var]\n\t" \
> + "jl %l2\n\t" \
> + "je %l[__zero]" \
> + : : [var] "m" ((_v)->counter) \
> + : "memory" \
> + : __zero, _label); \
> + goto __out; \
> +__zero: __ret = true; \
> +__out: __ret; \
> +})
> +
> #ifdef CONFIG_X86_32
> # include <asm/atomic64_32.h>
> #else
>
>
^ permalink raw reply [flat|nested] 34+ messages in thread
* Re: [PATCH v2 3/9] atomic: Introduce atomic_{inc,dec,dec_and_test}_overflow()
2021-12-13 10:59 ` Peter Zijlstra
@ 2021-12-13 11:09 ` Mark Rutland
0 siblings, 0 replies; 34+ messages in thread
From: Mark Rutland @ 2021-12-13 11:09 UTC (permalink / raw)
To: Peter Zijlstra
Cc: will, boqun.feng, linux-kernel, x86, elver, keescook, hch,
torvalds, axboe
On Mon, Dec 13, 2021 at 11:59:48AM +0100, Peter Zijlstra wrote:
> On Mon, Dec 13, 2021 at 10:06:01AM +0000, Mark Rutland wrote:
> > On Fri, Dec 10, 2021 at 05:16:21PM +0100, Peter Zijlstra wrote:
>
> > > +#ifndef arch_atomic_inc_overflow
> > > +#define arch_atomic_inc_overflow(_v, _label) \
> > > +do { \
> > > + int __old = arch_atomic_fetch_inc(_v); \
> > > + if (unlikely(__old <= 0)) \
> > > + goto _label; \
> > > +} while (0)
> > > +#endif
> > > +
> > > +#ifndef arch_atomic_dec_overflow
> > > +#define arch_atomic_dec_overflow(_v, _label) \
> > > +do { \
> > > + int __new = arch_atomic_dec_return(_v); \
> > > + if (unlikely(__new <= 0)) \
> > > + goto _label; \
> > > +} while (0)
> > > +#endif
> > > +
> > > +#ifndef arch_atomic_dec_and_test_overflow
> > > +#define arch_atomic_dec_and_test_overflow(_v, _label) \
> > > +({ \
> > > + bool __ret = false; \
> > > + int __new = arch_atomic_dec_return(_v); \
> > > + if (unlikely(__new < 0)) \
> > > + goto _label; \
> > > + if (unlikely(__new == 0)) \
> > > + __ret = true; \
> > > + __ret; \
> > > +})
> > > +#endif
> >
> > I had wanted to move at least part of this to a function to ensure
> > single-evaluation and avoid accidental symbol aliasing, but (as we discussed
> > over IRC) I couldn't find any good way to do so, and given this is sufficiently
> > specialise I think we should be ok with this as-is. It's certainly no worse
> > than the existing stuff for xchg/cmpxchg.
>
> Right, as you know I tried the same :-) Anyway, the above macros should
> be free of multi-evaluation issues, both _v and _label are only used the
> once. Aliassing is always a possibility but minimized by __ prefixing
> the local variables.
Agreed! I just wanted something archived in the thread mentioning that this was
the only practical option.
I agree that as this stands we're not doing anything sufficiently complicated
enough to worry about multi-evaluation, and that the underscores should be
sufficient to avoid aliasing in practice.
Mark.
^ permalink raw reply [flat|nested] 34+ messages in thread
* [PATCH v2 10/9] atomic: Document the atomic_{}_overflow() functions
2021-12-10 16:16 [PATCH v2 0/9] refcount: Improve code-gen Peter Zijlstra
` (9 preceding siblings ...)
2021-12-10 19:37 ` [PATCH v2 0/9] refcount: Improve code-gen Peter Zijlstra
@ 2021-12-13 12:15 ` Peter Zijlstra
2021-12-13 12:20 ` [PATCH v2 0/9] refcount: Improve code-gen Peter Zijlstra
11 siblings, 0 replies; 34+ messages in thread
From: Peter Zijlstra @ 2021-12-13 12:15 UTC (permalink / raw)
To: will, boqun.feng
Cc: linux-kernel, x86, mark.rutland, elver, keescook, hch, torvalds, axboe
They're damn special, they're very likely to confuse people, write a
few words in a vain attempt to twart some of that confusion.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
---
Documentation/atomic_t.txt | 36 +++++++++++++++++
include/linux/atomic/atomic-arch-fallback.h | 52 ++++++++++++++++++++++++-
scripts/atomic/fallbacks/dec_and_test_overflow | 10 ++++
scripts/atomic/fallbacks/dec_overflow | 9 ++++
scripts/atomic/fallbacks/inc_overflow | 9 ++++
5 files changed, 115 insertions(+), 1 deletion(-)
--- a/Documentation/atomic_t.txt
+++ b/Documentation/atomic_t.txt
@@ -45,6 +45,14 @@ The 'full' API consists of (atomic64_ an
atomic_sub_and_test(), atomic_dec_and_test()
+Reference count with overflow (as used by refcount_t):
+
+ atomic_inc_overflow(), atomic_dec_overflow()
+ atomic_dec_and_test_overflow()
+
+ ATOMIC_OVERFLOW_OFFSET
+
+
Misc:
atomic_inc_and_test(), atomic_add_negative()
@@ -157,6 +165,34 @@ atomic variable) can be fully ordered an
visible.
+Overflow ops:
+
+The atomic_{}_overflow() ops are similar to their !_overflow() bretheren with
+two notable exceptions:
+
+ - they take a label as their final argument to to jump to when the atomic op
+ overflows;
+
+ - the actual value can be offset from 0 in order to allow architectures
+ to play games with condition flags in order to generate better code. This
+ offset is ATOMIC_OVERFLOW_OFFSET.
+
+The canonical overflow conditions are (ATOMIC_OVERFLOW_OFFSET == 0):
+
+ inc: zero or negative on the value pre increment
+ dec: zero or negative on the value post decrement
+ dec_and_test: negative on the value post decrement
+
+This gives an effective range of [0, INT_MIN] for the actual value. When an
+architecture uses ATOMIC_OVERFLOW_OFFSET == 1 (x86), the effective range
+becomes [-1, INT_MIN], or [0, INT_MIN+1] after correction.
+
+These semantics match the reference count use-case (for which they were
+created). Specifically incrementing from zero is a failure because zero means
+the object is freed (IOW use-after-free). Decrementing to zero is a failure
+because it goes undetected (see dec_and_test) and the object would leak.
+
+
ORDERING (go read memory-barriers.txt first)
--------
--- a/include/linux/atomic/atomic-arch-fallback.h
+++ b/include/linux/atomic/atomic-arch-fallback.h
@@ -1251,6 +1251,14 @@ arch_atomic_dec_if_positive(atomic_t *v)
#endif
#ifndef arch_atomic_inc_overflow
+/**
+ * arch_atomic_inc_overflow - increment with overflow exception
+ * @_v: pointer of type atomic_t
+ * @_label: label to goto on overflow
+ *
+ * Atomically increments @_v and goto @_label when the old
+ * value (+ATOMIC_OVERFLOW_OFFSET) is negative.
+ */
#define arch_atomic_inc_overflow(_v, _label) \
do { \
int __old = arch_atomic_fetch_inc(_v); \
@@ -1260,6 +1268,14 @@ do { \
#endif
#ifndef arch_atomic_dec_overflow
+/**
+ * arch_atomic_dec_overflow - decrement with overflow exception
+ * @_v: pointer of type atomic_t
+ * @_label: label to goto on overflow
+ *
+ * Atomically decrements @_v and goto @_label when the
+ * result (+ATOMIC_OVERFLOW_OFFSET) is negative.
+ */
#define arch_atomic_dec_overflow(_v, _label) \
do { \
int __new = arch_atomic_dec_return(_v); \
@@ -1269,6 +1285,15 @@ do { \
#endif
#ifndef arch_atomic_dec_and_test_overflow
+/**
+ * arch_atomic_dec_and_test_overflow - decrement and test if zero with overflow exception
+ * @_v: pointer of type atomic_t
+ * @_label: label to goto on overflow
+ *
+ * Atomically decrements @_v and returns true if the result
+ * (+ATOMIC_OVERFLOW_OFFSET) is zero or goto @_label when the
+ * result (+ATOMIC_OVERFLOW_OFFSET) is negative.
+ */
#define arch_atomic_dec_and_test_overflow(_v, _label) \
({ \
bool __ret = false; \
@@ -2389,6 +2414,14 @@ arch_atomic64_dec_if_positive(atomic64_t
#endif
#ifndef arch_atomic64_inc_overflow
+/**
+ * arch_atomic64_inc_overflow - increment with overflow exception
+ * @_v: pointer of type atomic64_t
+ * @_label: label to goto on overflow
+ *
+ * Atomically increments @_v and goto @_label when the old
+ * value (+ATOMIC64_OVERFLOW_OFFSET) is negative.
+ */
#define arch_atomic64_inc_overflow(_v, _label) \
do { \
s64 __old = arch_atomic64_fetch_inc(_v); \
@@ -2398,6 +2431,14 @@ do { \
#endif
#ifndef arch_atomic64_dec_overflow
+/**
+ * arch_atomic64_dec_overflow - decrement with overflow exception
+ * @_v: pointer of type atomic64_t
+ * @_label: label to goto on overflow
+ *
+ * Atomically decrements @_v and goto @_label when the
+ * result (+ATOMIC64_OVERFLOW_OFFSET) is negative.
+ */
#define arch_atomic64_dec_overflow(_v, _label) \
do { \
s64 __new = arch_atomic64_dec_return(_v); \
@@ -2407,6 +2448,15 @@ do { \
#endif
#ifndef arch_atomic64_dec_and_test_overflow
+/**
+ * arch_atomic64_dec_and_test_overflow - decrement and test if zero with overflow exception
+ * @_v: pointer of type atomic64_t
+ * @_label: label to goto on overflow
+ *
+ * Atomically decrements @_v and returns true if the result
+ * (+ATOMIC64_OVERFLOW_OFFSET) is zero or goto @_label when the
+ * result (+ATOMIC64_OVERFLOW_OFFSET) is negative.
+ */
#define arch_atomic64_dec_and_test_overflow(_v, _label) \
({ \
bool __ret = false; \
@@ -2420,4 +2470,4 @@ do { \
#endif
#endif /* _LINUX_ATOMIC_FALLBACK_H */
-// e4c677b23b3fd5e8dc4bce9d6c055103666cfc4a
+// ccccab23ad71e0523949b969f68b40fe6812fc15
--- a/scripts/atomic/fallbacks/dec_and_test_overflow
+++ b/scripts/atomic/fallbacks/dec_and_test_overflow
@@ -1,4 +1,14 @@
+ATOMIC=`echo ${atomic} | tr '[:lower:]' '[:upper:]'`
cat << EOF
+/**
+ * arch_${atomic}_dec_and_test_overflow - decrement and test if zero with overflow exception
+ * @_v: pointer of type ${atomic}_t
+ * @_label: label to goto on overflow
+ *
+ * Atomically decrements @_v and returns true if the result
+ * (+${ATOMIC}_OVERFLOW_OFFSET) is zero or goto @_label when the
+ * result (+${ATOMIC}_OVERFLOW_OFFSET) is negative.
+ */
#define arch_${atomic}_dec_and_test_overflow(_v, _label) \\
({ \\
bool __ret = false; \\
--- a/scripts/atomic/fallbacks/dec_overflow
+++ b/scripts/atomic/fallbacks/dec_overflow
@@ -1,4 +1,13 @@
+ATOMIC=`echo ${atomic} | tr '[:lower:]' '[:upper:]'`
cat << EOF
+/**
+ * arch_${atomic}_dec_overflow - decrement with overflow exception
+ * @_v: pointer of type ${atomic}_t
+ * @_label: label to goto on overflow
+ *
+ * Atomically decrements @_v and goto @_label when the
+ * result (+${ATOMIC}_OVERFLOW_OFFSET) is negative.
+ */
#define arch_${atomic}_dec_overflow(_v, _label) \\
do { \\
${int} __new = arch_${atomic}_dec_return(_v); \\
--- a/scripts/atomic/fallbacks/inc_overflow
+++ b/scripts/atomic/fallbacks/inc_overflow
@@ -1,4 +1,13 @@
+ATOMIC=`echo ${atomic} | tr '[:lower:]' '[:upper:]'`
cat << EOF
+/**
+ * arch_${atomic}_inc_overflow - increment with overflow exception
+ * @_v: pointer of type ${atomic}_t
+ * @_label: label to goto on overflow
+ *
+ * Atomically increments @_v and goto @_label when the old
+ * value (+${ATOMIC}_OVERFLOW_OFFSET) is negative.
+ */
#define arch_${atomic}_inc_overflow(_v, _label) \\
do { \\
${int} __old = arch_${atomic}_fetch_inc(_v); \\
^ permalink raw reply [flat|nested] 34+ messages in thread
* Re: [PATCH v2 0/9] refcount: Improve code-gen
2021-12-10 16:16 [PATCH v2 0/9] refcount: Improve code-gen Peter Zijlstra
` (10 preceding siblings ...)
2021-12-13 12:15 ` [PATCH v2 10/9] atomic: Document the atomic_{}_overflow() functions Peter Zijlstra
@ 2021-12-13 12:20 ` Peter Zijlstra
2021-12-13 14:42 ` Marco Elver
11 siblings, 1 reply; 34+ messages in thread
From: Peter Zijlstra @ 2021-12-13 12:20 UTC (permalink / raw)
To: will, boqun.feng
Cc: linux-kernel, x86, mark.rutland, elver, keescook, hch, torvalds, axboe
Also, since this will conflict most mighty with Marco's kcsan work in
the rcu tree, I've written the below patch as a replacement for the
instrumentation patch in that series.
It depends on other bits in that series so it cannot be applied here,
but will come in handy when trying to resolve the merge conflict.
---
Subject: locking/atomics, kcsan: Add instrumentation for barriers
From: Peter Zijlstra <peterz@infradead.org>
Date: Thu Dec 9 17:08:16 CET 2021
Adds the required KCSAN instrumentation for barriers of atomics.
[adapted from https://lkml.kernel.org/r/20211130114433.2580590-17-elver@google.com]
Originally-by: Marco Elver <elver@google.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
---
include/linux/atomic/atomic-instrumented.h | 141 ++++++++++++++++++++++++++++-
scripts/atomic/atomic-tbl.sh | 6 +
scripts/atomic/gen-atomic-instrumented.sh | 30 ++++--
3 files changed, 169 insertions(+), 8 deletions(-)
--- a/include/linux/atomic/atomic-instrumented.h
+++ b/include/linux/atomic/atomic-instrumented.h
@@ -45,6 +45,7 @@ atomic_set(atomic_t *v, int i)
static __always_inline void
atomic_set_release(atomic_t *v, int i)
{
+ kcsan_release();
instrument_atomic_write(v, sizeof(*v));
arch_atomic_set_release(v, i);
}
@@ -59,6 +60,7 @@ atomic_add(int i, atomic_t *v)
static __always_inline int
atomic_add_return(int i, atomic_t *v)
{
+ kcsan_mb();
instrument_atomic_read_write(v, sizeof(*v));
return arch_atomic_add_return(i, v);
}
@@ -73,6 +75,7 @@ atomic_add_return_acquire(int i, atomic_
static __always_inline int
atomic_add_return_release(int i, atomic_t *v)
{
+ kcsan_release();
instrument_atomic_read_write(v, sizeof(*v));
return arch_atomic_add_return_release(i, v);
}
@@ -87,6 +90,7 @@ atomic_add_return_relaxed(int i, atomic_
static __always_inline int
atomic_fetch_add(int i, atomic_t *v)
{
+ kcsan_mb();
instrument_atomic_read_write(v, sizeof(*v));
return arch_atomic_fetch_add(i, v);
}
@@ -101,6 +105,7 @@ atomic_fetch_add_acquire(int i, atomic_t
static __always_inline int
atomic_fetch_add_release(int i, atomic_t *v)
{
+ kcsan_release();
instrument_atomic_read_write(v, sizeof(*v));
return arch_atomic_fetch_add_release(i, v);
}
@@ -122,6 +127,7 @@ atomic_sub(int i, atomic_t *v)
static __always_inline int
atomic_sub_return(int i, atomic_t *v)
{
+ kcsan_mb();
instrument_atomic_read_write(v, sizeof(*v));
return arch_atomic_sub_return(i, v);
}
@@ -136,6 +142,7 @@ atomic_sub_return_acquire(int i, atomic_
static __always_inline int
atomic_sub_return_release(int i, atomic_t *v)
{
+ kcsan_release();
instrument_atomic_read_write(v, sizeof(*v));
return arch_atomic_sub_return_release(i, v);
}
@@ -150,6 +157,7 @@ atomic_sub_return_relaxed(int i, atomic_
static __always_inline int
atomic_fetch_sub(int i, atomic_t *v)
{
+ kcsan_mb();
instrument_atomic_read_write(v, sizeof(*v));
return arch_atomic_fetch_sub(i, v);
}
@@ -164,6 +172,7 @@ atomic_fetch_sub_acquire(int i, atomic_t
static __always_inline int
atomic_fetch_sub_release(int i, atomic_t *v)
{
+ kcsan_release();
instrument_atomic_read_write(v, sizeof(*v));
return arch_atomic_fetch_sub_release(i, v);
}
@@ -185,6 +194,7 @@ atomic_inc(atomic_t *v)
static __always_inline int
atomic_inc_return(atomic_t *v)
{
+ kcsan_mb();
instrument_atomic_read_write(v, sizeof(*v));
return arch_atomic_inc_return(v);
}
@@ -199,6 +209,7 @@ atomic_inc_return_acquire(atomic_t *v)
static __always_inline int
atomic_inc_return_release(atomic_t *v)
{
+ kcsan_release();
instrument_atomic_read_write(v, sizeof(*v));
return arch_atomic_inc_return_release(v);
}
@@ -213,6 +224,7 @@ atomic_inc_return_relaxed(atomic_t *v)
static __always_inline int
atomic_fetch_inc(atomic_t *v)
{
+ kcsan_mb();
instrument_atomic_read_write(v, sizeof(*v));
return arch_atomic_fetch_inc(v);
}
@@ -227,6 +239,7 @@ atomic_fetch_inc_acquire(atomic_t *v)
static __always_inline int
atomic_fetch_inc_release(atomic_t *v)
{
+ kcsan_release();
instrument_atomic_read_write(v, sizeof(*v));
return arch_atomic_fetch_inc_release(v);
}
@@ -248,6 +261,7 @@ atomic_dec(atomic_t *v)
static __always_inline int
atomic_dec_return(atomic_t *v)
{
+ kcsan_mb();
instrument_atomic_read_write(v, sizeof(*v));
return arch_atomic_dec_return(v);
}
@@ -262,6 +276,7 @@ atomic_dec_return_acquire(atomic_t *v)
static __always_inline int
atomic_dec_return_release(atomic_t *v)
{
+ kcsan_release();
instrument_atomic_read_write(v, sizeof(*v));
return arch_atomic_dec_return_release(v);
}
@@ -276,6 +291,7 @@ atomic_dec_return_relaxed(atomic_t *v)
static __always_inline int
atomic_fetch_dec(atomic_t *v)
{
+ kcsan_mb();
instrument_atomic_read_write(v, sizeof(*v));
return arch_atomic_fetch_dec(v);
}
@@ -290,6 +306,7 @@ atomic_fetch_dec_acquire(atomic_t *v)
static __always_inline int
atomic_fetch_dec_release(atomic_t *v)
{
+ kcsan_release();
instrument_atomic_read_write(v, sizeof(*v));
return arch_atomic_fetch_dec_release(v);
}
@@ -311,6 +328,7 @@ atomic_and(int i, atomic_t *v)
static __always_inline int
atomic_fetch_and(int i, atomic_t *v)
{
+ kcsan_mb();
instrument_atomic_read_write(v, sizeof(*v));
return arch_atomic_fetch_and(i, v);
}
@@ -325,6 +343,7 @@ atomic_fetch_and_acquire(int i, atomic_t
static __always_inline int
atomic_fetch_and_release(int i, atomic_t *v)
{
+ kcsan_release();
instrument_atomic_read_write(v, sizeof(*v));
return arch_atomic_fetch_and_release(i, v);
}
@@ -346,6 +365,7 @@ atomic_andnot(int i, atomic_t *v)
static __always_inline int
atomic_fetch_andnot(int i, atomic_t *v)
{
+ kcsan_mb();
instrument_atomic_read_write(v, sizeof(*v));
return arch_atomic_fetch_andnot(i, v);
}
@@ -360,6 +380,7 @@ atomic_fetch_andnot_acquire(int i, atomi
static __always_inline int
atomic_fetch_andnot_release(int i, atomic_t *v)
{
+ kcsan_release();
instrument_atomic_read_write(v, sizeof(*v));
return arch_atomic_fetch_andnot_release(i, v);
}
@@ -381,6 +402,7 @@ atomic_or(int i, atomic_t *v)
static __always_inline int
atomic_fetch_or(int i, atomic_t *v)
{
+ kcsan_mb();
instrument_atomic_read_write(v, sizeof(*v));
return arch_atomic_fetch_or(i, v);
}
@@ -395,6 +417,7 @@ atomic_fetch_or_acquire(int i, atomic_t
static __always_inline int
atomic_fetch_or_release(int i, atomic_t *v)
{
+ kcsan_release();
instrument_atomic_read_write(v, sizeof(*v));
return arch_atomic_fetch_or_release(i, v);
}
@@ -416,6 +439,7 @@ atomic_xor(int i, atomic_t *v)
static __always_inline int
atomic_fetch_xor(int i, atomic_t *v)
{
+ kcsan_mb();
instrument_atomic_read_write(v, sizeof(*v));
return arch_atomic_fetch_xor(i, v);
}
@@ -430,6 +454,7 @@ atomic_fetch_xor_acquire(int i, atomic_t
static __always_inline int
atomic_fetch_xor_release(int i, atomic_t *v)
{
+ kcsan_release();
instrument_atomic_read_write(v, sizeof(*v));
return arch_atomic_fetch_xor_release(i, v);
}
@@ -444,6 +469,7 @@ atomic_fetch_xor_relaxed(int i, atomic_t
static __always_inline int
atomic_xchg(atomic_t *v, int i)
{
+ kcsan_mb();
instrument_atomic_read_write(v, sizeof(*v));
return arch_atomic_xchg(v, i);
}
@@ -458,6 +484,7 @@ atomic_xchg_acquire(atomic_t *v, int i)
static __always_inline int
atomic_xchg_release(atomic_t *v, int i)
{
+ kcsan_release();
instrument_atomic_read_write(v, sizeof(*v));
return arch_atomic_xchg_release(v, i);
}
@@ -472,6 +499,7 @@ atomic_xchg_relaxed(atomic_t *v, int i)
static __always_inline int
atomic_cmpxchg(atomic_t *v, int old, int new)
{
+ kcsan_mb();
instrument_atomic_read_write(v, sizeof(*v));
return arch_atomic_cmpxchg(v, old, new);
}
@@ -486,6 +514,7 @@ atomic_cmpxchg_acquire(atomic_t *v, int
static __always_inline int
atomic_cmpxchg_release(atomic_t *v, int old, int new)
{
+ kcsan_release();
instrument_atomic_read_write(v, sizeof(*v));
return arch_atomic_cmpxchg_release(v, old, new);
}
@@ -500,6 +529,7 @@ atomic_cmpxchg_relaxed(atomic_t *v, int
static __always_inline bool
atomic_try_cmpxchg(atomic_t *v, int *old, int new)
{
+ kcsan_mb();
instrument_atomic_read_write(v, sizeof(*v));
instrument_read_write(old, sizeof(*old));
return arch_atomic_try_cmpxchg(v, old, new);
@@ -516,6 +546,7 @@ atomic_try_cmpxchg_acquire(atomic_t *v,
static __always_inline bool
atomic_try_cmpxchg_release(atomic_t *v, int *old, int new)
{
+ kcsan_release();
instrument_atomic_read_write(v, sizeof(*v));
instrument_read_write(old, sizeof(*old));
return arch_atomic_try_cmpxchg_release(v, old, new);
@@ -532,6 +563,7 @@ atomic_try_cmpxchg_relaxed(atomic_t *v,
static __always_inline bool
atomic_sub_and_test(int i, atomic_t *v)
{
+ kcsan_mb();
instrument_atomic_read_write(v, sizeof(*v));
return arch_atomic_sub_and_test(i, v);
}
@@ -539,6 +571,7 @@ atomic_sub_and_test(int i, atomic_t *v)
static __always_inline bool
atomic_dec_and_test(atomic_t *v)
{
+ kcsan_mb();
instrument_atomic_read_write(v, sizeof(*v));
return arch_atomic_dec_and_test(v);
}
@@ -546,6 +579,7 @@ atomic_dec_and_test(atomic_t *v)
static __always_inline bool
atomic_inc_and_test(atomic_t *v)
{
+ kcsan_mb();
instrument_atomic_read_write(v, sizeof(*v));
return arch_atomic_inc_and_test(v);
}
@@ -553,6 +587,7 @@ atomic_inc_and_test(atomic_t *v)
static __always_inline bool
atomic_add_negative(int i, atomic_t *v)
{
+ kcsan_mb();
instrument_atomic_read_write(v, sizeof(*v));
return arch_atomic_add_negative(i, v);
}
@@ -560,6 +595,7 @@ atomic_add_negative(int i, atomic_t *v)
static __always_inline int
atomic_fetch_add_unless(atomic_t *v, int a, int u)
{
+ kcsan_mb();
instrument_atomic_read_write(v, sizeof(*v));
return arch_atomic_fetch_add_unless(v, a, u);
}
@@ -567,6 +603,7 @@ atomic_fetch_add_unless(atomic_t *v, int
static __always_inline bool
atomic_add_unless(atomic_t *v, int a, int u)
{
+ kcsan_mb();
instrument_atomic_read_write(v, sizeof(*v));
return arch_atomic_add_unless(v, a, u);
}
@@ -574,6 +611,7 @@ atomic_add_unless(atomic_t *v, int a, in
static __always_inline bool
atomic_inc_not_zero(atomic_t *v)
{
+ kcsan_mb();
instrument_atomic_read_write(v, sizeof(*v));
return arch_atomic_inc_not_zero(v);
}
@@ -581,6 +619,7 @@ atomic_inc_not_zero(atomic_t *v)
static __always_inline bool
atomic_inc_unless_negative(atomic_t *v)
{
+ kcsan_mb();
instrument_atomic_read_write(v, sizeof(*v));
return arch_atomic_inc_unless_negative(v);
}
@@ -588,6 +627,7 @@ atomic_inc_unless_negative(atomic_t *v)
static __always_inline bool
atomic_dec_unless_positive(atomic_t *v)
{
+ kcsan_mb();
instrument_atomic_read_write(v, sizeof(*v));
return arch_atomic_dec_unless_positive(v);
}
@@ -595,6 +635,7 @@ atomic_dec_unless_positive(atomic_t *v)
static __always_inline int
atomic_dec_if_positive(atomic_t *v)
{
+ kcsan_mb();
instrument_atomic_read_write(v, sizeof(*v));
return arch_atomic_dec_if_positive(v);
}
@@ -616,6 +657,7 @@ atomic_dec_if_positive(atomic_t *v)
#define atomic_dec_and_test_ofl(v, L) \
({ \
typeof(v) __ai_v = (v); \
+ kcsan_mb(); \
instrument_atomic_read_write(__ai_v, sizeof(*__ai_v)); \
arch_atomic_dec_and_test_ofl(__ai_v, L); \
})
@@ -644,6 +686,7 @@ atomic64_set(atomic64_t *v, s64 i)
static __always_inline void
atomic64_set_release(atomic64_t *v, s64 i)
{
+ kcsan_release();
instrument_atomic_write(v, sizeof(*v));
arch_atomic64_set_release(v, i);
}
@@ -658,6 +701,7 @@ atomic64_add(s64 i, atomic64_t *v)
static __always_inline s64
atomic64_add_return(s64 i, atomic64_t *v)
{
+ kcsan_mb();
instrument_atomic_read_write(v, sizeof(*v));
return arch_atomic64_add_return(i, v);
}
@@ -672,6 +716,7 @@ atomic64_add_return_acquire(s64 i, atomi
static __always_inline s64
atomic64_add_return_release(s64 i, atomic64_t *v)
{
+ kcsan_release();
instrument_atomic_read_write(v, sizeof(*v));
return arch_atomic64_add_return_release(i, v);
}
@@ -686,6 +731,7 @@ atomic64_add_return_relaxed(s64 i, atomi
static __always_inline s64
atomic64_fetch_add(s64 i, atomic64_t *v)
{
+ kcsan_mb();
instrument_atomic_read_write(v, sizeof(*v));
return arch_atomic64_fetch_add(i, v);
}
@@ -700,6 +746,7 @@ atomic64_fetch_add_acquire(s64 i, atomic
static __always_inline s64
atomic64_fetch_add_release(s64 i, atomic64_t *v)
{
+ kcsan_release();
instrument_atomic_read_write(v, sizeof(*v));
return arch_atomic64_fetch_add_release(i, v);
}
@@ -721,6 +768,7 @@ atomic64_sub(s64 i, atomic64_t *v)
static __always_inline s64
atomic64_sub_return(s64 i, atomic64_t *v)
{
+ kcsan_mb();
instrument_atomic_read_write(v, sizeof(*v));
return arch_atomic64_sub_return(i, v);
}
@@ -735,6 +783,7 @@ atomic64_sub_return_acquire(s64 i, atomi
static __always_inline s64
atomic64_sub_return_release(s64 i, atomic64_t *v)
{
+ kcsan_release();
instrument_atomic_read_write(v, sizeof(*v));
return arch_atomic64_sub_return_release(i, v);
}
@@ -749,6 +798,7 @@ atomic64_sub_return_relaxed(s64 i, atomi
static __always_inline s64
atomic64_fetch_sub(s64 i, atomic64_t *v)
{
+ kcsan_mb();
instrument_atomic_read_write(v, sizeof(*v));
return arch_atomic64_fetch_sub(i, v);
}
@@ -763,6 +813,7 @@ atomic64_fetch_sub_acquire(s64 i, atomic
static __always_inline s64
atomic64_fetch_sub_release(s64 i, atomic64_t *v)
{
+ kcsan_release();
instrument_atomic_read_write(v, sizeof(*v));
return arch_atomic64_fetch_sub_release(i, v);
}
@@ -784,6 +835,7 @@ atomic64_inc(atomic64_t *v)
static __always_inline s64
atomic64_inc_return(atomic64_t *v)
{
+ kcsan_mb();
instrument_atomic_read_write(v, sizeof(*v));
return arch_atomic64_inc_return(v);
}
@@ -798,6 +850,7 @@ atomic64_inc_return_acquire(atomic64_t *
static __always_inline s64
atomic64_inc_return_release(atomic64_t *v)
{
+ kcsan_release();
instrument_atomic_read_write(v, sizeof(*v));
return arch_atomic64_inc_return_release(v);
}
@@ -812,6 +865,7 @@ atomic64_inc_return_relaxed(atomic64_t *
static __always_inline s64
atomic64_fetch_inc(atomic64_t *v)
{
+ kcsan_mb();
instrument_atomic_read_write(v, sizeof(*v));
return arch_atomic64_fetch_inc(v);
}
@@ -826,6 +880,7 @@ atomic64_fetch_inc_acquire(atomic64_t *v
static __always_inline s64
atomic64_fetch_inc_release(atomic64_t *v)
{
+ kcsan_release();
instrument_atomic_read_write(v, sizeof(*v));
return arch_atomic64_fetch_inc_release(v);
}
@@ -847,6 +902,7 @@ atomic64_dec(atomic64_t *v)
static __always_inline s64
atomic64_dec_return(atomic64_t *v)
{
+ kcsan_mb();
instrument_atomic_read_write(v, sizeof(*v));
return arch_atomic64_dec_return(v);
}
@@ -861,6 +917,7 @@ atomic64_dec_return_acquire(atomic64_t *
static __always_inline s64
atomic64_dec_return_release(atomic64_t *v)
{
+ kcsan_release();
instrument_atomic_read_write(v, sizeof(*v));
return arch_atomic64_dec_return_release(v);
}
@@ -875,6 +932,7 @@ atomic64_dec_return_relaxed(atomic64_t *
static __always_inline s64
atomic64_fetch_dec(atomic64_t *v)
{
+ kcsan_mb();
instrument_atomic_read_write(v, sizeof(*v));
return arch_atomic64_fetch_dec(v);
}
@@ -889,6 +947,7 @@ atomic64_fetch_dec_acquire(atomic64_t *v
static __always_inline s64
atomic64_fetch_dec_release(atomic64_t *v)
{
+ kcsan_release();
instrument_atomic_read_write(v, sizeof(*v));
return arch_atomic64_fetch_dec_release(v);
}
@@ -910,6 +969,7 @@ atomic64_and(s64 i, atomic64_t *v)
static __always_inline s64
atomic64_fetch_and(s64 i, atomic64_t *v)
{
+ kcsan_mb();
instrument_atomic_read_write(v, sizeof(*v));
return arch_atomic64_fetch_and(i, v);
}
@@ -924,6 +984,7 @@ atomic64_fetch_and_acquire(s64 i, atomic
static __always_inline s64
atomic64_fetch_and_release(s64 i, atomic64_t *v)
{
+ kcsan_release();
instrument_atomic_read_write(v, sizeof(*v));
return arch_atomic64_fetch_and_release(i, v);
}
@@ -945,6 +1006,7 @@ atomic64_andnot(s64 i, atomic64_t *v)
static __always_inline s64
atomic64_fetch_andnot(s64 i, atomic64_t *v)
{
+ kcsan_mb();
instrument_atomic_read_write(v, sizeof(*v));
return arch_atomic64_fetch_andnot(i, v);
}
@@ -959,6 +1021,7 @@ atomic64_fetch_andnot_acquire(s64 i, ato
static __always_inline s64
atomic64_fetch_andnot_release(s64 i, atomic64_t *v)
{
+ kcsan_release();
instrument_atomic_read_write(v, sizeof(*v));
return arch_atomic64_fetch_andnot_release(i, v);
}
@@ -980,6 +1043,7 @@ atomic64_or(s64 i, atomic64_t *v)
static __always_inline s64
atomic64_fetch_or(s64 i, atomic64_t *v)
{
+ kcsan_mb();
instrument_atomic_read_write(v, sizeof(*v));
return arch_atomic64_fetch_or(i, v);
}
@@ -994,6 +1058,7 @@ atomic64_fetch_or_acquire(s64 i, atomic6
static __always_inline s64
atomic64_fetch_or_release(s64 i, atomic64_t *v)
{
+ kcsan_release();
instrument_atomic_read_write(v, sizeof(*v));
return arch_atomic64_fetch_or_release(i, v);
}
@@ -1015,6 +1080,7 @@ atomic64_xor(s64 i, atomic64_t *v)
static __always_inline s64
atomic64_fetch_xor(s64 i, atomic64_t *v)
{
+ kcsan_mb();
instrument_atomic_read_write(v, sizeof(*v));
return arch_atomic64_fetch_xor(i, v);
}
@@ -1029,6 +1095,7 @@ atomic64_fetch_xor_acquire(s64 i, atomic
static __always_inline s64
atomic64_fetch_xor_release(s64 i, atomic64_t *v)
{
+ kcsan_release();
instrument_atomic_read_write(v, sizeof(*v));
return arch_atomic64_fetch_xor_release(i, v);
}
@@ -1043,6 +1110,7 @@ atomic64_fetch_xor_relaxed(s64 i, atomic
static __always_inline s64
atomic64_xchg(atomic64_t *v, s64 i)
{
+ kcsan_mb();
instrument_atomic_read_write(v, sizeof(*v));
return arch_atomic64_xchg(v, i);
}
@@ -1057,6 +1125,7 @@ atomic64_xchg_acquire(atomic64_t *v, s64
static __always_inline s64
atomic64_xchg_release(atomic64_t *v, s64 i)
{
+ kcsan_release();
instrument_atomic_read_write(v, sizeof(*v));
return arch_atomic64_xchg_release(v, i);
}
@@ -1071,6 +1140,7 @@ atomic64_xchg_relaxed(atomic64_t *v, s64
static __always_inline s64
atomic64_cmpxchg(atomic64_t *v, s64 old, s64 new)
{
+ kcsan_mb();
instrument_atomic_read_write(v, sizeof(*v));
return arch_atomic64_cmpxchg(v, old, new);
}
@@ -1085,6 +1155,7 @@ atomic64_cmpxchg_acquire(atomic64_t *v,
static __always_inline s64
atomic64_cmpxchg_release(atomic64_t *v, s64 old, s64 new)
{
+ kcsan_release();
instrument_atomic_read_write(v, sizeof(*v));
return arch_atomic64_cmpxchg_release(v, old, new);
}
@@ -1099,6 +1170,7 @@ atomic64_cmpxchg_relaxed(atomic64_t *v,
static __always_inline bool
atomic64_try_cmpxchg(atomic64_t *v, s64 *old, s64 new)
{
+ kcsan_mb();
instrument_atomic_read_write(v, sizeof(*v));
instrument_read_write(old, sizeof(*old));
return arch_atomic64_try_cmpxchg(v, old, new);
@@ -1115,6 +1187,7 @@ atomic64_try_cmpxchg_acquire(atomic64_t
static __always_inline bool
atomic64_try_cmpxchg_release(atomic64_t *v, s64 *old, s64 new)
{
+ kcsan_release();
instrument_atomic_read_write(v, sizeof(*v));
instrument_read_write(old, sizeof(*old));
return arch_atomic64_try_cmpxchg_release(v, old, new);
@@ -1131,6 +1204,7 @@ atomic64_try_cmpxchg_relaxed(atomic64_t
static __always_inline bool
atomic64_sub_and_test(s64 i, atomic64_t *v)
{
+ kcsan_mb();
instrument_atomic_read_write(v, sizeof(*v));
return arch_atomic64_sub_and_test(i, v);
}
@@ -1138,6 +1212,7 @@ atomic64_sub_and_test(s64 i, atomic64_t
static __always_inline bool
atomic64_dec_and_test(atomic64_t *v)
{
+ kcsan_mb();
instrument_atomic_read_write(v, sizeof(*v));
return arch_atomic64_dec_and_test(v);
}
@@ -1145,6 +1220,7 @@ atomic64_dec_and_test(atomic64_t *v)
static __always_inline bool
atomic64_inc_and_test(atomic64_t *v)
{
+ kcsan_mb();
instrument_atomic_read_write(v, sizeof(*v));
return arch_atomic64_inc_and_test(v);
}
@@ -1152,6 +1228,7 @@ atomic64_inc_and_test(atomic64_t *v)
static __always_inline bool
atomic64_add_negative(s64 i, atomic64_t *v)
{
+ kcsan_mb();
instrument_atomic_read_write(v, sizeof(*v));
return arch_atomic64_add_negative(i, v);
}
@@ -1159,6 +1236,7 @@ atomic64_add_negative(s64 i, atomic64_t
static __always_inline s64
atomic64_fetch_add_unless(atomic64_t *v, s64 a, s64 u)
{
+ kcsan_mb();
instrument_atomic_read_write(v, sizeof(*v));
return arch_atomic64_fetch_add_unless(v, a, u);
}
@@ -1166,6 +1244,7 @@ atomic64_fetch_add_unless(atomic64_t *v,
static __always_inline bool
atomic64_add_unless(atomic64_t *v, s64 a, s64 u)
{
+ kcsan_mb();
instrument_atomic_read_write(v, sizeof(*v));
return arch_atomic64_add_unless(v, a, u);
}
@@ -1173,6 +1252,7 @@ atomic64_add_unless(atomic64_t *v, s64 a
static __always_inline bool
atomic64_inc_not_zero(atomic64_t *v)
{
+ kcsan_mb();
instrument_atomic_read_write(v, sizeof(*v));
return arch_atomic64_inc_not_zero(v);
}
@@ -1180,6 +1260,7 @@ atomic64_inc_not_zero(atomic64_t *v)
static __always_inline bool
atomic64_inc_unless_negative(atomic64_t *v)
{
+ kcsan_mb();
instrument_atomic_read_write(v, sizeof(*v));
return arch_atomic64_inc_unless_negative(v);
}
@@ -1187,6 +1268,7 @@ atomic64_inc_unless_negative(atomic64_t
static __always_inline bool
atomic64_dec_unless_positive(atomic64_t *v)
{
+ kcsan_mb();
instrument_atomic_read_write(v, sizeof(*v));
return arch_atomic64_dec_unless_positive(v);
}
@@ -1194,6 +1276,7 @@ atomic64_dec_unless_positive(atomic64_t
static __always_inline s64
atomic64_dec_if_positive(atomic64_t *v)
{
+ kcsan_mb();
instrument_atomic_read_write(v, sizeof(*v));
return arch_atomic64_dec_if_positive(v);
}
@@ -1215,6 +1298,7 @@ atomic64_dec_if_positive(atomic64_t *v)
#define atomic64_dec_and_test_ofl(v, L) \
({ \
typeof(v) __ai_v = (v); \
+ kcsan_mb(); \
instrument_atomic_read_write(__ai_v, sizeof(*__ai_v)); \
arch_atomic64_dec_and_test_ofl(__ai_v, L); \
})
@@ -1243,6 +1327,7 @@ atomic_long_set(atomic_long_t *v, long i
static __always_inline void
atomic_long_set_release(atomic_long_t *v, long i)
{
+ kcsan_release();
instrument_atomic_write(v, sizeof(*v));
arch_atomic_long_set_release(v, i);
}
@@ -1257,6 +1342,7 @@ atomic_long_add(long i, atomic_long_t *v
static __always_inline long
atomic_long_add_return(long i, atomic_long_t *v)
{
+ kcsan_mb();
instrument_atomic_read_write(v, sizeof(*v));
return arch_atomic_long_add_return(i, v);
}
@@ -1271,6 +1357,7 @@ atomic_long_add_return_acquire(long i, a
static __always_inline long
atomic_long_add_return_release(long i, atomic_long_t *v)
{
+ kcsan_release();
instrument_atomic_read_write(v, sizeof(*v));
return arch_atomic_long_add_return_release(i, v);
}
@@ -1285,6 +1372,7 @@ atomic_long_add_return_relaxed(long i, a
static __always_inline long
atomic_long_fetch_add(long i, atomic_long_t *v)
{
+ kcsan_mb();
instrument_atomic_read_write(v, sizeof(*v));
return arch_atomic_long_fetch_add(i, v);
}
@@ -1299,6 +1387,7 @@ atomic_long_fetch_add_acquire(long i, at
static __always_inline long
atomic_long_fetch_add_release(long i, atomic_long_t *v)
{
+ kcsan_release();
instrument_atomic_read_write(v, sizeof(*v));
return arch_atomic_long_fetch_add_release(i, v);
}
@@ -1320,6 +1409,7 @@ atomic_long_sub(long i, atomic_long_t *v
static __always_inline long
atomic_long_sub_return(long i, atomic_long_t *v)
{
+ kcsan_mb();
instrument_atomic_read_write(v, sizeof(*v));
return arch_atomic_long_sub_return(i, v);
}
@@ -1334,6 +1424,7 @@ atomic_long_sub_return_acquire(long i, a
static __always_inline long
atomic_long_sub_return_release(long i, atomic_long_t *v)
{
+ kcsan_release();
instrument_atomic_read_write(v, sizeof(*v));
return arch_atomic_long_sub_return_release(i, v);
}
@@ -1348,6 +1439,7 @@ atomic_long_sub_return_relaxed(long i, a
static __always_inline long
atomic_long_fetch_sub(long i, atomic_long_t *v)
{
+ kcsan_mb();
instrument_atomic_read_write(v, sizeof(*v));
return arch_atomic_long_fetch_sub(i, v);
}
@@ -1362,6 +1454,7 @@ atomic_long_fetch_sub_acquire(long i, at
static __always_inline long
atomic_long_fetch_sub_release(long i, atomic_long_t *v)
{
+ kcsan_release();
instrument_atomic_read_write(v, sizeof(*v));
return arch_atomic_long_fetch_sub_release(i, v);
}
@@ -1383,6 +1476,7 @@ atomic_long_inc(atomic_long_t *v)
static __always_inline long
atomic_long_inc_return(atomic_long_t *v)
{
+ kcsan_mb();
instrument_atomic_read_write(v, sizeof(*v));
return arch_atomic_long_inc_return(v);
}
@@ -1397,6 +1491,7 @@ atomic_long_inc_return_acquire(atomic_lo
static __always_inline long
atomic_long_inc_return_release(atomic_long_t *v)
{
+ kcsan_release();
instrument_atomic_read_write(v, sizeof(*v));
return arch_atomic_long_inc_return_release(v);
}
@@ -1411,6 +1506,7 @@ atomic_long_inc_return_relaxed(atomic_lo
static __always_inline long
atomic_long_fetch_inc(atomic_long_t *v)
{
+ kcsan_mb();
instrument_atomic_read_write(v, sizeof(*v));
return arch_atomic_long_fetch_inc(v);
}
@@ -1425,6 +1521,7 @@ atomic_long_fetch_inc_acquire(atomic_lon
static __always_inline long
atomic_long_fetch_inc_release(atomic_long_t *v)
{
+ kcsan_release();
instrument_atomic_read_write(v, sizeof(*v));
return arch_atomic_long_fetch_inc_release(v);
}
@@ -1446,6 +1543,7 @@ atomic_long_dec(atomic_long_t *v)
static __always_inline long
atomic_long_dec_return(atomic_long_t *v)
{
+ kcsan_mb();
instrument_atomic_read_write(v, sizeof(*v));
return arch_atomic_long_dec_return(v);
}
@@ -1460,6 +1558,7 @@ atomic_long_dec_return_acquire(atomic_lo
static __always_inline long
atomic_long_dec_return_release(atomic_long_t *v)
{
+ kcsan_release();
instrument_atomic_read_write(v, sizeof(*v));
return arch_atomic_long_dec_return_release(v);
}
@@ -1474,6 +1573,7 @@ atomic_long_dec_return_relaxed(atomic_lo
static __always_inline long
atomic_long_fetch_dec(atomic_long_t *v)
{
+ kcsan_mb();
instrument_atomic_read_write(v, sizeof(*v));
return arch_atomic_long_fetch_dec(v);
}
@@ -1488,6 +1588,7 @@ atomic_long_fetch_dec_acquire(atomic_lon
static __always_inline long
atomic_long_fetch_dec_release(atomic_long_t *v)
{
+ kcsan_release();
instrument_atomic_read_write(v, sizeof(*v));
return arch_atomic_long_fetch_dec_release(v);
}
@@ -1509,6 +1610,7 @@ atomic_long_and(long i, atomic_long_t *v
static __always_inline long
atomic_long_fetch_and(long i, atomic_long_t *v)
{
+ kcsan_mb();
instrument_atomic_read_write(v, sizeof(*v));
return arch_atomic_long_fetch_and(i, v);
}
@@ -1523,6 +1625,7 @@ atomic_long_fetch_and_acquire(long i, at
static __always_inline long
atomic_long_fetch_and_release(long i, atomic_long_t *v)
{
+ kcsan_release();
instrument_atomic_read_write(v, sizeof(*v));
return arch_atomic_long_fetch_and_release(i, v);
}
@@ -1544,6 +1647,7 @@ atomic_long_andnot(long i, atomic_long_t
static __always_inline long
atomic_long_fetch_andnot(long i, atomic_long_t *v)
{
+ kcsan_mb();
instrument_atomic_read_write(v, sizeof(*v));
return arch_atomic_long_fetch_andnot(i, v);
}
@@ -1558,6 +1662,7 @@ atomic_long_fetch_andnot_acquire(long i,
static __always_inline long
atomic_long_fetch_andnot_release(long i, atomic_long_t *v)
{
+ kcsan_release();
instrument_atomic_read_write(v, sizeof(*v));
return arch_atomic_long_fetch_andnot_release(i, v);
}
@@ -1579,6 +1684,7 @@ atomic_long_or(long i, atomic_long_t *v)
static __always_inline long
atomic_long_fetch_or(long i, atomic_long_t *v)
{
+ kcsan_mb();
instrument_atomic_read_write(v, sizeof(*v));
return arch_atomic_long_fetch_or(i, v);
}
@@ -1593,6 +1699,7 @@ atomic_long_fetch_or_acquire(long i, ato
static __always_inline long
atomic_long_fetch_or_release(long i, atomic_long_t *v)
{
+ kcsan_release();
instrument_atomic_read_write(v, sizeof(*v));
return arch_atomic_long_fetch_or_release(i, v);
}
@@ -1614,6 +1721,7 @@ atomic_long_xor(long i, atomic_long_t *v
static __always_inline long
atomic_long_fetch_xor(long i, atomic_long_t *v)
{
+ kcsan_mb();
instrument_atomic_read_write(v, sizeof(*v));
return arch_atomic_long_fetch_xor(i, v);
}
@@ -1628,6 +1736,7 @@ atomic_long_fetch_xor_acquire(long i, at
static __always_inline long
atomic_long_fetch_xor_release(long i, atomic_long_t *v)
{
+ kcsan_release();
instrument_atomic_read_write(v, sizeof(*v));
return arch_atomic_long_fetch_xor_release(i, v);
}
@@ -1642,6 +1751,7 @@ atomic_long_fetch_xor_relaxed(long i, at
static __always_inline long
atomic_long_xchg(atomic_long_t *v, long i)
{
+ kcsan_mb();
instrument_atomic_read_write(v, sizeof(*v));
return arch_atomic_long_xchg(v, i);
}
@@ -1656,6 +1766,7 @@ atomic_long_xchg_acquire(atomic_long_t *
static __always_inline long
atomic_long_xchg_release(atomic_long_t *v, long i)
{
+ kcsan_release();
instrument_atomic_read_write(v, sizeof(*v));
return arch_atomic_long_xchg_release(v, i);
}
@@ -1670,6 +1781,7 @@ atomic_long_xchg_relaxed(atomic_long_t *
static __always_inline long
atomic_long_cmpxchg(atomic_long_t *v, long old, long new)
{
+ kcsan_mb();
instrument_atomic_read_write(v, sizeof(*v));
return arch_atomic_long_cmpxchg(v, old, new);
}
@@ -1684,6 +1796,7 @@ atomic_long_cmpxchg_acquire(atomic_long_
static __always_inline long
atomic_long_cmpxchg_release(atomic_long_t *v, long old, long new)
{
+ kcsan_release();
instrument_atomic_read_write(v, sizeof(*v));
return arch_atomic_long_cmpxchg_release(v, old, new);
}
@@ -1698,6 +1811,7 @@ atomic_long_cmpxchg_relaxed(atomic_long_
static __always_inline bool
atomic_long_try_cmpxchg(atomic_long_t *v, long *old, long new)
{
+ kcsan_mb();
instrument_atomic_read_write(v, sizeof(*v));
instrument_read_write(old, sizeof(*old));
return arch_atomic_long_try_cmpxchg(v, old, new);
@@ -1714,6 +1828,7 @@ atomic_long_try_cmpxchg_acquire(atomic_l
static __always_inline bool
atomic_long_try_cmpxchg_release(atomic_long_t *v, long *old, long new)
{
+ kcsan_release();
instrument_atomic_read_write(v, sizeof(*v));
instrument_read_write(old, sizeof(*old));
return arch_atomic_long_try_cmpxchg_release(v, old, new);
@@ -1730,6 +1845,7 @@ atomic_long_try_cmpxchg_relaxed(atomic_l
static __always_inline bool
atomic_long_sub_and_test(long i, atomic_long_t *v)
{
+ kcsan_mb();
instrument_atomic_read_write(v, sizeof(*v));
return arch_atomic_long_sub_and_test(i, v);
}
@@ -1737,6 +1853,7 @@ atomic_long_sub_and_test(long i, atomic_
static __always_inline bool
atomic_long_dec_and_test(atomic_long_t *v)
{
+ kcsan_mb();
instrument_atomic_read_write(v, sizeof(*v));
return arch_atomic_long_dec_and_test(v);
}
@@ -1744,6 +1861,7 @@ atomic_long_dec_and_test(atomic_long_t *
static __always_inline bool
atomic_long_inc_and_test(atomic_long_t *v)
{
+ kcsan_mb();
instrument_atomic_read_write(v, sizeof(*v));
return arch_atomic_long_inc_and_test(v);
}
@@ -1751,6 +1869,7 @@ atomic_long_inc_and_test(atomic_long_t *
static __always_inline bool
atomic_long_add_negative(long i, atomic_long_t *v)
{
+ kcsan_mb();
instrument_atomic_read_write(v, sizeof(*v));
return arch_atomic_long_add_negative(i, v);
}
@@ -1758,6 +1877,7 @@ atomic_long_add_negative(long i, atomic_
static __always_inline long
atomic_long_fetch_add_unless(atomic_long_t *v, long a, long u)
{
+ kcsan_mb();
instrument_atomic_read_write(v, sizeof(*v));
return arch_atomic_long_fetch_add_unless(v, a, u);
}
@@ -1765,6 +1885,7 @@ atomic_long_fetch_add_unless(atomic_long
static __always_inline bool
atomic_long_add_unless(atomic_long_t *v, long a, long u)
{
+ kcsan_mb();
instrument_atomic_read_write(v, sizeof(*v));
return arch_atomic_long_add_unless(v, a, u);
}
@@ -1772,6 +1893,7 @@ atomic_long_add_unless(atomic_long_t *v,
static __always_inline bool
atomic_long_inc_not_zero(atomic_long_t *v)
{
+ kcsan_mb();
instrument_atomic_read_write(v, sizeof(*v));
return arch_atomic_long_inc_not_zero(v);
}
@@ -1779,6 +1901,7 @@ atomic_long_inc_not_zero(atomic_long_t *
static __always_inline bool
atomic_long_inc_unless_negative(atomic_long_t *v)
{
+ kcsan_mb();
instrument_atomic_read_write(v, sizeof(*v));
return arch_atomic_long_inc_unless_negative(v);
}
@@ -1786,6 +1909,7 @@ atomic_long_inc_unless_negative(atomic_l
static __always_inline bool
atomic_long_dec_unless_positive(atomic_long_t *v)
{
+ kcsan_mb();
instrument_atomic_read_write(v, sizeof(*v));
return arch_atomic_long_dec_unless_positive(v);
}
@@ -1793,6 +1917,7 @@ atomic_long_dec_unless_positive(atomic_l
static __always_inline long
atomic_long_dec_if_positive(atomic_long_t *v)
{
+ kcsan_mb();
instrument_atomic_read_write(v, sizeof(*v));
return arch_atomic_long_dec_if_positive(v);
}
@@ -1814,6 +1939,7 @@ atomic_long_dec_if_positive(atomic_long_
#define atomic_long_dec_and_test_ofl(v, L) \
({ \
typeof(v) __ai_v = (v); \
+ kcsan_mb(); \
instrument_atomic_read_write(__ai_v, sizeof(*__ai_v)); \
arch_atomic_long_dec_and_test_ofl(__ai_v, L); \
})
@@ -1821,6 +1947,7 @@ atomic_long_dec_if_positive(atomic_long_
#define xchg(ptr, ...) \
({ \
typeof(ptr) __ai_ptr = (ptr); \
+ kcsan_mb(); \
instrument_atomic_read_write(__ai_ptr, sizeof(*__ai_ptr)); \
arch_xchg(__ai_ptr, __VA_ARGS__); \
})
@@ -1835,6 +1962,7 @@ atomic_long_dec_if_positive(atomic_long_
#define xchg_release(ptr, ...) \
({ \
typeof(ptr) __ai_ptr = (ptr); \
+ kcsan_release(); \
instrument_atomic_read_write(__ai_ptr, sizeof(*__ai_ptr)); \
arch_xchg_release(__ai_ptr, __VA_ARGS__); \
})
@@ -1849,6 +1977,7 @@ atomic_long_dec_if_positive(atomic_long_
#define cmpxchg(ptr, ...) \
({ \
typeof(ptr) __ai_ptr = (ptr); \
+ kcsan_mb(); \
instrument_atomic_read_write(__ai_ptr, sizeof(*__ai_ptr)); \
arch_cmpxchg(__ai_ptr, __VA_ARGS__); \
})
@@ -1863,6 +1992,7 @@ atomic_long_dec_if_positive(atomic_long_
#define cmpxchg_release(ptr, ...) \
({ \
typeof(ptr) __ai_ptr = (ptr); \
+ kcsan_release(); \
instrument_atomic_read_write(__ai_ptr, sizeof(*__ai_ptr)); \
arch_cmpxchg_release(__ai_ptr, __VA_ARGS__); \
})
@@ -1877,6 +2007,7 @@ atomic_long_dec_if_positive(atomic_long_
#define cmpxchg64(ptr, ...) \
({ \
typeof(ptr) __ai_ptr = (ptr); \
+ kcsan_mb(); \
instrument_atomic_read_write(__ai_ptr, sizeof(*__ai_ptr)); \
arch_cmpxchg64(__ai_ptr, __VA_ARGS__); \
})
@@ -1891,6 +2022,7 @@ atomic_long_dec_if_positive(atomic_long_
#define cmpxchg64_release(ptr, ...) \
({ \
typeof(ptr) __ai_ptr = (ptr); \
+ kcsan_release(); \
instrument_atomic_read_write(__ai_ptr, sizeof(*__ai_ptr)); \
arch_cmpxchg64_release(__ai_ptr, __VA_ARGS__); \
})
@@ -1906,6 +2038,7 @@ atomic_long_dec_if_positive(atomic_long_
({ \
typeof(ptr) __ai_ptr = (ptr); \
typeof(oldp) __ai_oldp = (oldp); \
+ kcsan_mb(); \
instrument_atomic_read_write(__ai_ptr, sizeof(*__ai_ptr)); \
instrument_read_write(__ai_oldp, sizeof(*__ai_oldp)); \
arch_try_cmpxchg(__ai_ptr, __ai_oldp, __VA_ARGS__); \
@@ -1924,6 +2057,7 @@ atomic_long_dec_if_positive(atomic_long_
({ \
typeof(ptr) __ai_ptr = (ptr); \
typeof(oldp) __ai_oldp = (oldp); \
+ kcsan_release(); \
instrument_atomic_read_write(__ai_ptr, sizeof(*__ai_ptr)); \
instrument_read_write(__ai_oldp, sizeof(*__ai_oldp)); \
arch_try_cmpxchg_release(__ai_ptr, __ai_oldp, __VA_ARGS__); \
@@ -1941,6 +2075,7 @@ atomic_long_dec_if_positive(atomic_long_
#define cmpxchg_local(ptr, ...) \
({ \
typeof(ptr) __ai_ptr = (ptr); \
+ kcsan_mb(); \
instrument_atomic_read_write(__ai_ptr, sizeof(*__ai_ptr)); \
arch_cmpxchg_local(__ai_ptr, __VA_ARGS__); \
})
@@ -1948,6 +2083,7 @@ atomic_long_dec_if_positive(atomic_long_
#define cmpxchg64_local(ptr, ...) \
({ \
typeof(ptr) __ai_ptr = (ptr); \
+ kcsan_mb(); \
instrument_atomic_read_write(__ai_ptr, sizeof(*__ai_ptr)); \
arch_cmpxchg64_local(__ai_ptr, __VA_ARGS__); \
})
@@ -1955,6 +2091,7 @@ atomic_long_dec_if_positive(atomic_long_
#define sync_cmpxchg(ptr, ...) \
({ \
typeof(ptr) __ai_ptr = (ptr); \
+ kcsan_mb(); \
instrument_atomic_read_write(__ai_ptr, sizeof(*__ai_ptr)); \
arch_sync_cmpxchg(__ai_ptr, __VA_ARGS__); \
})
@@ -1962,6 +2099,7 @@ atomic_long_dec_if_positive(atomic_long_
#define cmpxchg_double(ptr, ...) \
({ \
typeof(ptr) __ai_ptr = (ptr); \
+ kcsan_mb(); \
instrument_atomic_read_write(__ai_ptr, 2 * sizeof(*__ai_ptr)); \
arch_cmpxchg_double(__ai_ptr, __VA_ARGS__); \
})
@@ -1969,10 +2107,11 @@ atomic_long_dec_if_positive(atomic_long_
#define cmpxchg_double_local(ptr, ...) \
({ \
typeof(ptr) __ai_ptr = (ptr); \
+ kcsan_mb(); \
instrument_atomic_read_write(__ai_ptr, 2 * sizeof(*__ai_ptr)); \
arch_cmpxchg_double_local(__ai_ptr, __VA_ARGS__); \
})
#endif /* _LINUX_ATOMIC_INSTRUMENTED_H */
-// ca9d985faafbba0e0827441def0f010d3040d62d
+// 539756d4ae3f55016f5a2101983e0eed82a9b303
--- a/scripts/atomic/atomic-tbl.sh
+++ b/scripts/atomic/atomic-tbl.sh
@@ -42,6 +42,12 @@ meta_has_macro()
meta_in "$1" "mn"
}
+#meta_has_rmw(meta)
+meta_has_rmw()
+{
+ ! meta_in "$1" "sl"
+}
+
#find_fallback_template(pfx, name, sfx, order)
find_fallback_template()
{
--- a/scripts/atomic/gen-atomic-instrumented.sh
+++ b/scripts/atomic/gen-atomic-instrumented.sh
@@ -5,6 +5,17 @@ ATOMICDIR=$(dirname $0)
. ${ATOMICDIR}/atomic-tbl.sh
+#gen_linebreak(meta)
+gen_linebreak()
+{
+ local meta="$1"; shift
+
+ if meta_has_macro "${meta}"; then
+ printf " \\"
+ fi
+ printf "\n"
+}
+
#gen_param_check(meta, arg)
gen_param_check()
{
@@ -38,17 +49,22 @@ gen_param_check()
fi
printf "\tinstrument_${pfx}${rw}(${name}, ${mult}sizeof(*${name}));"
- if meta_has_macro "${meta}"; then
- printf " \\"
- fi
- printf "\n"
-
+ gen_linebreak "${meta}"
}
-#gen_params_checks(meta, arg...)
+#gen_params_checks(meta, order, arg...)
gen_params_checks()
{
local meta="$1"; shift
+ local order="$1"; shift
+
+ if [ "${order}" = "_release" ]; then
+ printf "\tkcsan_release();"
+ gen_linebreak "${meta}"
+ elif [ -z "${order}" ] && meta_has_rmw "${meta}" && meta_has_ret "${meta}"; then
+ printf "\tkcsan_mb();"
+ gen_linebreak "${meta}"
+ fi
while [ "$#" -gt 0 ]; do
gen_param_check "$meta" "$1"
@@ -120,7 +136,7 @@ gen_proto_order_variant()
atomicname="${pfx}${name}${sfx}${order}"
fi
- local checks="$(gen_params_checks "${meta}" "$@")"
+ local checks="$(gen_params_checks "${meta}" "${order}" "$@")"
local args="$(gen_args "$@")"
if meta_has_macro "${meta}"; then
^ permalink raw reply [flat|nested] 34+ messages in thread
* Re: [PATCH v2 0/9] refcount: Improve code-gen
2021-12-13 12:20 ` [PATCH v2 0/9] refcount: Improve code-gen Peter Zijlstra
@ 2021-12-13 14:42 ` Marco Elver
2021-12-13 16:11 ` Peter Zijlstra
0 siblings, 1 reply; 34+ messages in thread
From: Marco Elver @ 2021-12-13 14:42 UTC (permalink / raw)
To: Peter Zijlstra
Cc: will, boqun.feng, linux-kernel, x86, mark.rutland, keescook, hch,
torvalds, axboe, paulmck
On Mon, Dec 13, 2021 at 01:20PM +0100, Peter Zijlstra wrote:
>
> Also, since this will conflict most mighty with Marco's kcsan work in
> the rcu tree, I've written the below patch as a replacement for the
> instrumentation patch in that series.
>
> It depends on other bits in that series so it cannot be applied here,
> but will come in handy when trying to resolve the merge conflict.
>
> ---
> Subject: locking/atomics, kcsan: Add instrumentation for barriers
> From: Peter Zijlstra <peterz@infradead.org>
> Date: Thu Dec 9 17:08:16 CET 2021
>
> Adds the required KCSAN instrumentation for barriers of atomics.
>
> [adapted from https://lkml.kernel.org/r/20211130114433.2580590-17-elver@google.com]
> Originally-by: Marco Elver <elver@google.com>
> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Thanks!
I wanted to test this, but can't quite figure out which branches I need
to merge together to get it to apply. I assume -rcu + your series? Or
the updated series not yet sent?
In any case, I'm expecting the merge conflict will occur when -rcu/kcsan
is merged into -tip/locking at some point (but also -next before that).
Thanks,
-- Marco
> ---
> include/linux/atomic/atomic-instrumented.h | 141 ++++++++++++++++++++++++++++-
> scripts/atomic/atomic-tbl.sh | 6 +
> scripts/atomic/gen-atomic-instrumented.sh | 30 ++++--
> 3 files changed, 169 insertions(+), 8 deletions(-)
>
> --- a/include/linux/atomic/atomic-instrumented.h
> +++ b/include/linux/atomic/atomic-instrumented.h
> @@ -45,6 +45,7 @@ atomic_set(atomic_t *v, int i)
> static __always_inline void
> atomic_set_release(atomic_t *v, int i)
> {
> + kcsan_release();
> instrument_atomic_write(v, sizeof(*v));
> arch_atomic_set_release(v, i);
> }
> @@ -59,6 +60,7 @@ atomic_add(int i, atomic_t *v)
> static __always_inline int
> atomic_add_return(int i, atomic_t *v)
> {
> + kcsan_mb();
> instrument_atomic_read_write(v, sizeof(*v));
> return arch_atomic_add_return(i, v);
> }
> @@ -73,6 +75,7 @@ atomic_add_return_acquire(int i, atomic_
> static __always_inline int
> atomic_add_return_release(int i, atomic_t *v)
> {
> + kcsan_release();
> instrument_atomic_read_write(v, sizeof(*v));
> return arch_atomic_add_return_release(i, v);
> }
> @@ -87,6 +90,7 @@ atomic_add_return_relaxed(int i, atomic_
> static __always_inline int
> atomic_fetch_add(int i, atomic_t *v)
> {
> + kcsan_mb();
> instrument_atomic_read_write(v, sizeof(*v));
> return arch_atomic_fetch_add(i, v);
> }
> @@ -101,6 +105,7 @@ atomic_fetch_add_acquire(int i, atomic_t
> static __always_inline int
> atomic_fetch_add_release(int i, atomic_t *v)
> {
> + kcsan_release();
> instrument_atomic_read_write(v, sizeof(*v));
> return arch_atomic_fetch_add_release(i, v);
> }
> @@ -122,6 +127,7 @@ atomic_sub(int i, atomic_t *v)
> static __always_inline int
> atomic_sub_return(int i, atomic_t *v)
> {
> + kcsan_mb();
> instrument_atomic_read_write(v, sizeof(*v));
> return arch_atomic_sub_return(i, v);
> }
> @@ -136,6 +142,7 @@ atomic_sub_return_acquire(int i, atomic_
> static __always_inline int
> atomic_sub_return_release(int i, atomic_t *v)
> {
> + kcsan_release();
> instrument_atomic_read_write(v, sizeof(*v));
> return arch_atomic_sub_return_release(i, v);
> }
> @@ -150,6 +157,7 @@ atomic_sub_return_relaxed(int i, atomic_
> static __always_inline int
> atomic_fetch_sub(int i, atomic_t *v)
> {
> + kcsan_mb();
> instrument_atomic_read_write(v, sizeof(*v));
> return arch_atomic_fetch_sub(i, v);
> }
> @@ -164,6 +172,7 @@ atomic_fetch_sub_acquire(int i, atomic_t
> static __always_inline int
> atomic_fetch_sub_release(int i, atomic_t *v)
> {
> + kcsan_release();
> instrument_atomic_read_write(v, sizeof(*v));
> return arch_atomic_fetch_sub_release(i, v);
> }
> @@ -185,6 +194,7 @@ atomic_inc(atomic_t *v)
> static __always_inline int
> atomic_inc_return(atomic_t *v)
> {
> + kcsan_mb();
> instrument_atomic_read_write(v, sizeof(*v));
> return arch_atomic_inc_return(v);
> }
> @@ -199,6 +209,7 @@ atomic_inc_return_acquire(atomic_t *v)
> static __always_inline int
> atomic_inc_return_release(atomic_t *v)
> {
> + kcsan_release();
> instrument_atomic_read_write(v, sizeof(*v));
> return arch_atomic_inc_return_release(v);
> }
> @@ -213,6 +224,7 @@ atomic_inc_return_relaxed(atomic_t *v)
> static __always_inline int
> atomic_fetch_inc(atomic_t *v)
> {
> + kcsan_mb();
> instrument_atomic_read_write(v, sizeof(*v));
> return arch_atomic_fetch_inc(v);
> }
> @@ -227,6 +239,7 @@ atomic_fetch_inc_acquire(atomic_t *v)
> static __always_inline int
> atomic_fetch_inc_release(atomic_t *v)
> {
> + kcsan_release();
> instrument_atomic_read_write(v, sizeof(*v));
> return arch_atomic_fetch_inc_release(v);
> }
> @@ -248,6 +261,7 @@ atomic_dec(atomic_t *v)
> static __always_inline int
> atomic_dec_return(atomic_t *v)
> {
> + kcsan_mb();
> instrument_atomic_read_write(v, sizeof(*v));
> return arch_atomic_dec_return(v);
> }
> @@ -262,6 +276,7 @@ atomic_dec_return_acquire(atomic_t *v)
> static __always_inline int
> atomic_dec_return_release(atomic_t *v)
> {
> + kcsan_release();
> instrument_atomic_read_write(v, sizeof(*v));
> return arch_atomic_dec_return_release(v);
> }
> @@ -276,6 +291,7 @@ atomic_dec_return_relaxed(atomic_t *v)
> static __always_inline int
> atomic_fetch_dec(atomic_t *v)
> {
> + kcsan_mb();
> instrument_atomic_read_write(v, sizeof(*v));
> return arch_atomic_fetch_dec(v);
> }
> @@ -290,6 +306,7 @@ atomic_fetch_dec_acquire(atomic_t *v)
> static __always_inline int
> atomic_fetch_dec_release(atomic_t *v)
> {
> + kcsan_release();
> instrument_atomic_read_write(v, sizeof(*v));
> return arch_atomic_fetch_dec_release(v);
> }
> @@ -311,6 +328,7 @@ atomic_and(int i, atomic_t *v)
> static __always_inline int
> atomic_fetch_and(int i, atomic_t *v)
> {
> + kcsan_mb();
> instrument_atomic_read_write(v, sizeof(*v));
> return arch_atomic_fetch_and(i, v);
> }
> @@ -325,6 +343,7 @@ atomic_fetch_and_acquire(int i, atomic_t
> static __always_inline int
> atomic_fetch_and_release(int i, atomic_t *v)
> {
> + kcsan_release();
> instrument_atomic_read_write(v, sizeof(*v));
> return arch_atomic_fetch_and_release(i, v);
> }
> @@ -346,6 +365,7 @@ atomic_andnot(int i, atomic_t *v)
> static __always_inline int
> atomic_fetch_andnot(int i, atomic_t *v)
> {
> + kcsan_mb();
> instrument_atomic_read_write(v, sizeof(*v));
> return arch_atomic_fetch_andnot(i, v);
> }
> @@ -360,6 +380,7 @@ atomic_fetch_andnot_acquire(int i, atomi
> static __always_inline int
> atomic_fetch_andnot_release(int i, atomic_t *v)
> {
> + kcsan_release();
> instrument_atomic_read_write(v, sizeof(*v));
> return arch_atomic_fetch_andnot_release(i, v);
> }
> @@ -381,6 +402,7 @@ atomic_or(int i, atomic_t *v)
> static __always_inline int
> atomic_fetch_or(int i, atomic_t *v)
> {
> + kcsan_mb();
> instrument_atomic_read_write(v, sizeof(*v));
> return arch_atomic_fetch_or(i, v);
> }
> @@ -395,6 +417,7 @@ atomic_fetch_or_acquire(int i, atomic_t
> static __always_inline int
> atomic_fetch_or_release(int i, atomic_t *v)
> {
> + kcsan_release();
> instrument_atomic_read_write(v, sizeof(*v));
> return arch_atomic_fetch_or_release(i, v);
> }
> @@ -416,6 +439,7 @@ atomic_xor(int i, atomic_t *v)
> static __always_inline int
> atomic_fetch_xor(int i, atomic_t *v)
> {
> + kcsan_mb();
> instrument_atomic_read_write(v, sizeof(*v));
> return arch_atomic_fetch_xor(i, v);
> }
> @@ -430,6 +454,7 @@ atomic_fetch_xor_acquire(int i, atomic_t
> static __always_inline int
> atomic_fetch_xor_release(int i, atomic_t *v)
> {
> + kcsan_release();
> instrument_atomic_read_write(v, sizeof(*v));
> return arch_atomic_fetch_xor_release(i, v);
> }
> @@ -444,6 +469,7 @@ atomic_fetch_xor_relaxed(int i, atomic_t
> static __always_inline int
> atomic_xchg(atomic_t *v, int i)
> {
> + kcsan_mb();
> instrument_atomic_read_write(v, sizeof(*v));
> return arch_atomic_xchg(v, i);
> }
> @@ -458,6 +484,7 @@ atomic_xchg_acquire(atomic_t *v, int i)
> static __always_inline int
> atomic_xchg_release(atomic_t *v, int i)
> {
> + kcsan_release();
> instrument_atomic_read_write(v, sizeof(*v));
> return arch_atomic_xchg_release(v, i);
> }
> @@ -472,6 +499,7 @@ atomic_xchg_relaxed(atomic_t *v, int i)
> static __always_inline int
> atomic_cmpxchg(atomic_t *v, int old, int new)
> {
> + kcsan_mb();
> instrument_atomic_read_write(v, sizeof(*v));
> return arch_atomic_cmpxchg(v, old, new);
> }
> @@ -486,6 +514,7 @@ atomic_cmpxchg_acquire(atomic_t *v, int
> static __always_inline int
> atomic_cmpxchg_release(atomic_t *v, int old, int new)
> {
> + kcsan_release();
> instrument_atomic_read_write(v, sizeof(*v));
> return arch_atomic_cmpxchg_release(v, old, new);
> }
> @@ -500,6 +529,7 @@ atomic_cmpxchg_relaxed(atomic_t *v, int
> static __always_inline bool
> atomic_try_cmpxchg(atomic_t *v, int *old, int new)
> {
> + kcsan_mb();
> instrument_atomic_read_write(v, sizeof(*v));
> instrument_read_write(old, sizeof(*old));
> return arch_atomic_try_cmpxchg(v, old, new);
> @@ -516,6 +546,7 @@ atomic_try_cmpxchg_acquire(atomic_t *v,
> static __always_inline bool
> atomic_try_cmpxchg_release(atomic_t *v, int *old, int new)
> {
> + kcsan_release();
> instrument_atomic_read_write(v, sizeof(*v));
> instrument_read_write(old, sizeof(*old));
> return arch_atomic_try_cmpxchg_release(v, old, new);
> @@ -532,6 +563,7 @@ atomic_try_cmpxchg_relaxed(atomic_t *v,
> static __always_inline bool
> atomic_sub_and_test(int i, atomic_t *v)
> {
> + kcsan_mb();
> instrument_atomic_read_write(v, sizeof(*v));
> return arch_atomic_sub_and_test(i, v);
> }
> @@ -539,6 +571,7 @@ atomic_sub_and_test(int i, atomic_t *v)
> static __always_inline bool
> atomic_dec_and_test(atomic_t *v)
> {
> + kcsan_mb();
> instrument_atomic_read_write(v, sizeof(*v));
> return arch_atomic_dec_and_test(v);
> }
> @@ -546,6 +579,7 @@ atomic_dec_and_test(atomic_t *v)
> static __always_inline bool
> atomic_inc_and_test(atomic_t *v)
> {
> + kcsan_mb();
> instrument_atomic_read_write(v, sizeof(*v));
> return arch_atomic_inc_and_test(v);
> }
> @@ -553,6 +587,7 @@ atomic_inc_and_test(atomic_t *v)
> static __always_inline bool
> atomic_add_negative(int i, atomic_t *v)
> {
> + kcsan_mb();
> instrument_atomic_read_write(v, sizeof(*v));
> return arch_atomic_add_negative(i, v);
> }
> @@ -560,6 +595,7 @@ atomic_add_negative(int i, atomic_t *v)
> static __always_inline int
> atomic_fetch_add_unless(atomic_t *v, int a, int u)
> {
> + kcsan_mb();
> instrument_atomic_read_write(v, sizeof(*v));
> return arch_atomic_fetch_add_unless(v, a, u);
> }
> @@ -567,6 +603,7 @@ atomic_fetch_add_unless(atomic_t *v, int
> static __always_inline bool
> atomic_add_unless(atomic_t *v, int a, int u)
> {
> + kcsan_mb();
> instrument_atomic_read_write(v, sizeof(*v));
> return arch_atomic_add_unless(v, a, u);
> }
> @@ -574,6 +611,7 @@ atomic_add_unless(atomic_t *v, int a, in
> static __always_inline bool
> atomic_inc_not_zero(atomic_t *v)
> {
> + kcsan_mb();
> instrument_atomic_read_write(v, sizeof(*v));
> return arch_atomic_inc_not_zero(v);
> }
> @@ -581,6 +619,7 @@ atomic_inc_not_zero(atomic_t *v)
> static __always_inline bool
> atomic_inc_unless_negative(atomic_t *v)
> {
> + kcsan_mb();
> instrument_atomic_read_write(v, sizeof(*v));
> return arch_atomic_inc_unless_negative(v);
> }
> @@ -588,6 +627,7 @@ atomic_inc_unless_negative(atomic_t *v)
> static __always_inline bool
> atomic_dec_unless_positive(atomic_t *v)
> {
> + kcsan_mb();
> instrument_atomic_read_write(v, sizeof(*v));
> return arch_atomic_dec_unless_positive(v);
> }
> @@ -595,6 +635,7 @@ atomic_dec_unless_positive(atomic_t *v)
> static __always_inline int
> atomic_dec_if_positive(atomic_t *v)
> {
> + kcsan_mb();
> instrument_atomic_read_write(v, sizeof(*v));
> return arch_atomic_dec_if_positive(v);
> }
> @@ -616,6 +657,7 @@ atomic_dec_if_positive(atomic_t *v)
> #define atomic_dec_and_test_ofl(v, L) \
> ({ \
> typeof(v) __ai_v = (v); \
> + kcsan_mb(); \
> instrument_atomic_read_write(__ai_v, sizeof(*__ai_v)); \
> arch_atomic_dec_and_test_ofl(__ai_v, L); \
> })
> @@ -644,6 +686,7 @@ atomic64_set(atomic64_t *v, s64 i)
> static __always_inline void
> atomic64_set_release(atomic64_t *v, s64 i)
> {
> + kcsan_release();
> instrument_atomic_write(v, sizeof(*v));
> arch_atomic64_set_release(v, i);
> }
> @@ -658,6 +701,7 @@ atomic64_add(s64 i, atomic64_t *v)
> static __always_inline s64
> atomic64_add_return(s64 i, atomic64_t *v)
> {
> + kcsan_mb();
> instrument_atomic_read_write(v, sizeof(*v));
> return arch_atomic64_add_return(i, v);
> }
> @@ -672,6 +716,7 @@ atomic64_add_return_acquire(s64 i, atomi
> static __always_inline s64
> atomic64_add_return_release(s64 i, atomic64_t *v)
> {
> + kcsan_release();
> instrument_atomic_read_write(v, sizeof(*v));
> return arch_atomic64_add_return_release(i, v);
> }
> @@ -686,6 +731,7 @@ atomic64_add_return_relaxed(s64 i, atomi
> static __always_inline s64
> atomic64_fetch_add(s64 i, atomic64_t *v)
> {
> + kcsan_mb();
> instrument_atomic_read_write(v, sizeof(*v));
> return arch_atomic64_fetch_add(i, v);
> }
> @@ -700,6 +746,7 @@ atomic64_fetch_add_acquire(s64 i, atomic
> static __always_inline s64
> atomic64_fetch_add_release(s64 i, atomic64_t *v)
> {
> + kcsan_release();
> instrument_atomic_read_write(v, sizeof(*v));
> return arch_atomic64_fetch_add_release(i, v);
> }
> @@ -721,6 +768,7 @@ atomic64_sub(s64 i, atomic64_t *v)
> static __always_inline s64
> atomic64_sub_return(s64 i, atomic64_t *v)
> {
> + kcsan_mb();
> instrument_atomic_read_write(v, sizeof(*v));
> return arch_atomic64_sub_return(i, v);
> }
> @@ -735,6 +783,7 @@ atomic64_sub_return_acquire(s64 i, atomi
> static __always_inline s64
> atomic64_sub_return_release(s64 i, atomic64_t *v)
> {
> + kcsan_release();
> instrument_atomic_read_write(v, sizeof(*v));
> return arch_atomic64_sub_return_release(i, v);
> }
> @@ -749,6 +798,7 @@ atomic64_sub_return_relaxed(s64 i, atomi
> static __always_inline s64
> atomic64_fetch_sub(s64 i, atomic64_t *v)
> {
> + kcsan_mb();
> instrument_atomic_read_write(v, sizeof(*v));
> return arch_atomic64_fetch_sub(i, v);
> }
> @@ -763,6 +813,7 @@ atomic64_fetch_sub_acquire(s64 i, atomic
> static __always_inline s64
> atomic64_fetch_sub_release(s64 i, atomic64_t *v)
> {
> + kcsan_release();
> instrument_atomic_read_write(v, sizeof(*v));
> return arch_atomic64_fetch_sub_release(i, v);
> }
> @@ -784,6 +835,7 @@ atomic64_inc(atomic64_t *v)
> static __always_inline s64
> atomic64_inc_return(atomic64_t *v)
> {
> + kcsan_mb();
> instrument_atomic_read_write(v, sizeof(*v));
> return arch_atomic64_inc_return(v);
> }
> @@ -798,6 +850,7 @@ atomic64_inc_return_acquire(atomic64_t *
> static __always_inline s64
> atomic64_inc_return_release(atomic64_t *v)
> {
> + kcsan_release();
> instrument_atomic_read_write(v, sizeof(*v));
> return arch_atomic64_inc_return_release(v);
> }
> @@ -812,6 +865,7 @@ atomic64_inc_return_relaxed(atomic64_t *
> static __always_inline s64
> atomic64_fetch_inc(atomic64_t *v)
> {
> + kcsan_mb();
> instrument_atomic_read_write(v, sizeof(*v));
> return arch_atomic64_fetch_inc(v);
> }
> @@ -826,6 +880,7 @@ atomic64_fetch_inc_acquire(atomic64_t *v
> static __always_inline s64
> atomic64_fetch_inc_release(atomic64_t *v)
> {
> + kcsan_release();
> instrument_atomic_read_write(v, sizeof(*v));
> return arch_atomic64_fetch_inc_release(v);
> }
> @@ -847,6 +902,7 @@ atomic64_dec(atomic64_t *v)
> static __always_inline s64
> atomic64_dec_return(atomic64_t *v)
> {
> + kcsan_mb();
> instrument_atomic_read_write(v, sizeof(*v));
> return arch_atomic64_dec_return(v);
> }
> @@ -861,6 +917,7 @@ atomic64_dec_return_acquire(atomic64_t *
> static __always_inline s64
> atomic64_dec_return_release(atomic64_t *v)
> {
> + kcsan_release();
> instrument_atomic_read_write(v, sizeof(*v));
> return arch_atomic64_dec_return_release(v);
> }
> @@ -875,6 +932,7 @@ atomic64_dec_return_relaxed(atomic64_t *
> static __always_inline s64
> atomic64_fetch_dec(atomic64_t *v)
> {
> + kcsan_mb();
> instrument_atomic_read_write(v, sizeof(*v));
> return arch_atomic64_fetch_dec(v);
> }
> @@ -889,6 +947,7 @@ atomic64_fetch_dec_acquire(atomic64_t *v
> static __always_inline s64
> atomic64_fetch_dec_release(atomic64_t *v)
> {
> + kcsan_release();
> instrument_atomic_read_write(v, sizeof(*v));
> return arch_atomic64_fetch_dec_release(v);
> }
> @@ -910,6 +969,7 @@ atomic64_and(s64 i, atomic64_t *v)
> static __always_inline s64
> atomic64_fetch_and(s64 i, atomic64_t *v)
> {
> + kcsan_mb();
> instrument_atomic_read_write(v, sizeof(*v));
> return arch_atomic64_fetch_and(i, v);
> }
> @@ -924,6 +984,7 @@ atomic64_fetch_and_acquire(s64 i, atomic
> static __always_inline s64
> atomic64_fetch_and_release(s64 i, atomic64_t *v)
> {
> + kcsan_release();
> instrument_atomic_read_write(v, sizeof(*v));
> return arch_atomic64_fetch_and_release(i, v);
> }
> @@ -945,6 +1006,7 @@ atomic64_andnot(s64 i, atomic64_t *v)
> static __always_inline s64
> atomic64_fetch_andnot(s64 i, atomic64_t *v)
> {
> + kcsan_mb();
> instrument_atomic_read_write(v, sizeof(*v));
> return arch_atomic64_fetch_andnot(i, v);
> }
> @@ -959,6 +1021,7 @@ atomic64_fetch_andnot_acquire(s64 i, ato
> static __always_inline s64
> atomic64_fetch_andnot_release(s64 i, atomic64_t *v)
> {
> + kcsan_release();
> instrument_atomic_read_write(v, sizeof(*v));
> return arch_atomic64_fetch_andnot_release(i, v);
> }
> @@ -980,6 +1043,7 @@ atomic64_or(s64 i, atomic64_t *v)
> static __always_inline s64
> atomic64_fetch_or(s64 i, atomic64_t *v)
> {
> + kcsan_mb();
> instrument_atomic_read_write(v, sizeof(*v));
> return arch_atomic64_fetch_or(i, v);
> }
> @@ -994,6 +1058,7 @@ atomic64_fetch_or_acquire(s64 i, atomic6
> static __always_inline s64
> atomic64_fetch_or_release(s64 i, atomic64_t *v)
> {
> + kcsan_release();
> instrument_atomic_read_write(v, sizeof(*v));
> return arch_atomic64_fetch_or_release(i, v);
> }
> @@ -1015,6 +1080,7 @@ atomic64_xor(s64 i, atomic64_t *v)
> static __always_inline s64
> atomic64_fetch_xor(s64 i, atomic64_t *v)
> {
> + kcsan_mb();
> instrument_atomic_read_write(v, sizeof(*v));
> return arch_atomic64_fetch_xor(i, v);
> }
> @@ -1029,6 +1095,7 @@ atomic64_fetch_xor_acquire(s64 i, atomic
> static __always_inline s64
> atomic64_fetch_xor_release(s64 i, atomic64_t *v)
> {
> + kcsan_release();
> instrument_atomic_read_write(v, sizeof(*v));
> return arch_atomic64_fetch_xor_release(i, v);
> }
> @@ -1043,6 +1110,7 @@ atomic64_fetch_xor_relaxed(s64 i, atomic
> static __always_inline s64
> atomic64_xchg(atomic64_t *v, s64 i)
> {
> + kcsan_mb();
> instrument_atomic_read_write(v, sizeof(*v));
> return arch_atomic64_xchg(v, i);
> }
> @@ -1057,6 +1125,7 @@ atomic64_xchg_acquire(atomic64_t *v, s64
> static __always_inline s64
> atomic64_xchg_release(atomic64_t *v, s64 i)
> {
> + kcsan_release();
> instrument_atomic_read_write(v, sizeof(*v));
> return arch_atomic64_xchg_release(v, i);
> }
> @@ -1071,6 +1140,7 @@ atomic64_xchg_relaxed(atomic64_t *v, s64
> static __always_inline s64
> atomic64_cmpxchg(atomic64_t *v, s64 old, s64 new)
> {
> + kcsan_mb();
> instrument_atomic_read_write(v, sizeof(*v));
> return arch_atomic64_cmpxchg(v, old, new);
> }
> @@ -1085,6 +1155,7 @@ atomic64_cmpxchg_acquire(atomic64_t *v,
> static __always_inline s64
> atomic64_cmpxchg_release(atomic64_t *v, s64 old, s64 new)
> {
> + kcsan_release();
> instrument_atomic_read_write(v, sizeof(*v));
> return arch_atomic64_cmpxchg_release(v, old, new);
> }
> @@ -1099,6 +1170,7 @@ atomic64_cmpxchg_relaxed(atomic64_t *v,
> static __always_inline bool
> atomic64_try_cmpxchg(atomic64_t *v, s64 *old, s64 new)
> {
> + kcsan_mb();
> instrument_atomic_read_write(v, sizeof(*v));
> instrument_read_write(old, sizeof(*old));
> return arch_atomic64_try_cmpxchg(v, old, new);
> @@ -1115,6 +1187,7 @@ atomic64_try_cmpxchg_acquire(atomic64_t
> static __always_inline bool
> atomic64_try_cmpxchg_release(atomic64_t *v, s64 *old, s64 new)
> {
> + kcsan_release();
> instrument_atomic_read_write(v, sizeof(*v));
> instrument_read_write(old, sizeof(*old));
> return arch_atomic64_try_cmpxchg_release(v, old, new);
> @@ -1131,6 +1204,7 @@ atomic64_try_cmpxchg_relaxed(atomic64_t
> static __always_inline bool
> atomic64_sub_and_test(s64 i, atomic64_t *v)
> {
> + kcsan_mb();
> instrument_atomic_read_write(v, sizeof(*v));
> return arch_atomic64_sub_and_test(i, v);
> }
> @@ -1138,6 +1212,7 @@ atomic64_sub_and_test(s64 i, atomic64_t
> static __always_inline bool
> atomic64_dec_and_test(atomic64_t *v)
> {
> + kcsan_mb();
> instrument_atomic_read_write(v, sizeof(*v));
> return arch_atomic64_dec_and_test(v);
> }
> @@ -1145,6 +1220,7 @@ atomic64_dec_and_test(atomic64_t *v)
> static __always_inline bool
> atomic64_inc_and_test(atomic64_t *v)
> {
> + kcsan_mb();
> instrument_atomic_read_write(v, sizeof(*v));
> return arch_atomic64_inc_and_test(v);
> }
> @@ -1152,6 +1228,7 @@ atomic64_inc_and_test(atomic64_t *v)
> static __always_inline bool
> atomic64_add_negative(s64 i, atomic64_t *v)
> {
> + kcsan_mb();
> instrument_atomic_read_write(v, sizeof(*v));
> return arch_atomic64_add_negative(i, v);
> }
> @@ -1159,6 +1236,7 @@ atomic64_add_negative(s64 i, atomic64_t
> static __always_inline s64
> atomic64_fetch_add_unless(atomic64_t *v, s64 a, s64 u)
> {
> + kcsan_mb();
> instrument_atomic_read_write(v, sizeof(*v));
> return arch_atomic64_fetch_add_unless(v, a, u);
> }
> @@ -1166,6 +1244,7 @@ atomic64_fetch_add_unless(atomic64_t *v,
> static __always_inline bool
> atomic64_add_unless(atomic64_t *v, s64 a, s64 u)
> {
> + kcsan_mb();
> instrument_atomic_read_write(v, sizeof(*v));
> return arch_atomic64_add_unless(v, a, u);
> }
> @@ -1173,6 +1252,7 @@ atomic64_add_unless(atomic64_t *v, s64 a
> static __always_inline bool
> atomic64_inc_not_zero(atomic64_t *v)
> {
> + kcsan_mb();
> instrument_atomic_read_write(v, sizeof(*v));
> return arch_atomic64_inc_not_zero(v);
> }
> @@ -1180,6 +1260,7 @@ atomic64_inc_not_zero(atomic64_t *v)
> static __always_inline bool
> atomic64_inc_unless_negative(atomic64_t *v)
> {
> + kcsan_mb();
> instrument_atomic_read_write(v, sizeof(*v));
> return arch_atomic64_inc_unless_negative(v);
> }
> @@ -1187,6 +1268,7 @@ atomic64_inc_unless_negative(atomic64_t
> static __always_inline bool
> atomic64_dec_unless_positive(atomic64_t *v)
> {
> + kcsan_mb();
> instrument_atomic_read_write(v, sizeof(*v));
> return arch_atomic64_dec_unless_positive(v);
> }
> @@ -1194,6 +1276,7 @@ atomic64_dec_unless_positive(atomic64_t
> static __always_inline s64
> atomic64_dec_if_positive(atomic64_t *v)
> {
> + kcsan_mb();
> instrument_atomic_read_write(v, sizeof(*v));
> return arch_atomic64_dec_if_positive(v);
> }
> @@ -1215,6 +1298,7 @@ atomic64_dec_if_positive(atomic64_t *v)
> #define atomic64_dec_and_test_ofl(v, L) \
> ({ \
> typeof(v) __ai_v = (v); \
> + kcsan_mb(); \
> instrument_atomic_read_write(__ai_v, sizeof(*__ai_v)); \
> arch_atomic64_dec_and_test_ofl(__ai_v, L); \
> })
> @@ -1243,6 +1327,7 @@ atomic_long_set(atomic_long_t *v, long i
> static __always_inline void
> atomic_long_set_release(atomic_long_t *v, long i)
> {
> + kcsan_release();
> instrument_atomic_write(v, sizeof(*v));
> arch_atomic_long_set_release(v, i);
> }
> @@ -1257,6 +1342,7 @@ atomic_long_add(long i, atomic_long_t *v
> static __always_inline long
> atomic_long_add_return(long i, atomic_long_t *v)
> {
> + kcsan_mb();
> instrument_atomic_read_write(v, sizeof(*v));
> return arch_atomic_long_add_return(i, v);
> }
> @@ -1271,6 +1357,7 @@ atomic_long_add_return_acquire(long i, a
> static __always_inline long
> atomic_long_add_return_release(long i, atomic_long_t *v)
> {
> + kcsan_release();
> instrument_atomic_read_write(v, sizeof(*v));
> return arch_atomic_long_add_return_release(i, v);
> }
> @@ -1285,6 +1372,7 @@ atomic_long_add_return_relaxed(long i, a
> static __always_inline long
> atomic_long_fetch_add(long i, atomic_long_t *v)
> {
> + kcsan_mb();
> instrument_atomic_read_write(v, sizeof(*v));
> return arch_atomic_long_fetch_add(i, v);
> }
> @@ -1299,6 +1387,7 @@ atomic_long_fetch_add_acquire(long i, at
> static __always_inline long
> atomic_long_fetch_add_release(long i, atomic_long_t *v)
> {
> + kcsan_release();
> instrument_atomic_read_write(v, sizeof(*v));
> return arch_atomic_long_fetch_add_release(i, v);
> }
> @@ -1320,6 +1409,7 @@ atomic_long_sub(long i, atomic_long_t *v
> static __always_inline long
> atomic_long_sub_return(long i, atomic_long_t *v)
> {
> + kcsan_mb();
> instrument_atomic_read_write(v, sizeof(*v));
> return arch_atomic_long_sub_return(i, v);
> }
> @@ -1334,6 +1424,7 @@ atomic_long_sub_return_acquire(long i, a
> static __always_inline long
> atomic_long_sub_return_release(long i, atomic_long_t *v)
> {
> + kcsan_release();
> instrument_atomic_read_write(v, sizeof(*v));
> return arch_atomic_long_sub_return_release(i, v);
> }
> @@ -1348,6 +1439,7 @@ atomic_long_sub_return_relaxed(long i, a
> static __always_inline long
> atomic_long_fetch_sub(long i, atomic_long_t *v)
> {
> + kcsan_mb();
> instrument_atomic_read_write(v, sizeof(*v));
> return arch_atomic_long_fetch_sub(i, v);
> }
> @@ -1362,6 +1454,7 @@ atomic_long_fetch_sub_acquire(long i, at
> static __always_inline long
> atomic_long_fetch_sub_release(long i, atomic_long_t *v)
> {
> + kcsan_release();
> instrument_atomic_read_write(v, sizeof(*v));
> return arch_atomic_long_fetch_sub_release(i, v);
> }
> @@ -1383,6 +1476,7 @@ atomic_long_inc(atomic_long_t *v)
> static __always_inline long
> atomic_long_inc_return(atomic_long_t *v)
> {
> + kcsan_mb();
> instrument_atomic_read_write(v, sizeof(*v));
> return arch_atomic_long_inc_return(v);
> }
> @@ -1397,6 +1491,7 @@ atomic_long_inc_return_acquire(atomic_lo
> static __always_inline long
> atomic_long_inc_return_release(atomic_long_t *v)
> {
> + kcsan_release();
> instrument_atomic_read_write(v, sizeof(*v));
> return arch_atomic_long_inc_return_release(v);
> }
> @@ -1411,6 +1506,7 @@ atomic_long_inc_return_relaxed(atomic_lo
> static __always_inline long
> atomic_long_fetch_inc(atomic_long_t *v)
> {
> + kcsan_mb();
> instrument_atomic_read_write(v, sizeof(*v));
> return arch_atomic_long_fetch_inc(v);
> }
> @@ -1425,6 +1521,7 @@ atomic_long_fetch_inc_acquire(atomic_lon
> static __always_inline long
> atomic_long_fetch_inc_release(atomic_long_t *v)
> {
> + kcsan_release();
> instrument_atomic_read_write(v, sizeof(*v));
> return arch_atomic_long_fetch_inc_release(v);
> }
> @@ -1446,6 +1543,7 @@ atomic_long_dec(atomic_long_t *v)
> static __always_inline long
> atomic_long_dec_return(atomic_long_t *v)
> {
> + kcsan_mb();
> instrument_atomic_read_write(v, sizeof(*v));
> return arch_atomic_long_dec_return(v);
> }
> @@ -1460,6 +1558,7 @@ atomic_long_dec_return_acquire(atomic_lo
> static __always_inline long
> atomic_long_dec_return_release(atomic_long_t *v)
> {
> + kcsan_release();
> instrument_atomic_read_write(v, sizeof(*v));
> return arch_atomic_long_dec_return_release(v);
> }
> @@ -1474,6 +1573,7 @@ atomic_long_dec_return_relaxed(atomic_lo
> static __always_inline long
> atomic_long_fetch_dec(atomic_long_t *v)
> {
> + kcsan_mb();
> instrument_atomic_read_write(v, sizeof(*v));
> return arch_atomic_long_fetch_dec(v);
> }
> @@ -1488,6 +1588,7 @@ atomic_long_fetch_dec_acquire(atomic_lon
> static __always_inline long
> atomic_long_fetch_dec_release(atomic_long_t *v)
> {
> + kcsan_release();
> instrument_atomic_read_write(v, sizeof(*v));
> return arch_atomic_long_fetch_dec_release(v);
> }
> @@ -1509,6 +1610,7 @@ atomic_long_and(long i, atomic_long_t *v
> static __always_inline long
> atomic_long_fetch_and(long i, atomic_long_t *v)
> {
> + kcsan_mb();
> instrument_atomic_read_write(v, sizeof(*v));
> return arch_atomic_long_fetch_and(i, v);
> }
> @@ -1523,6 +1625,7 @@ atomic_long_fetch_and_acquire(long i, at
> static __always_inline long
> atomic_long_fetch_and_release(long i, atomic_long_t *v)
> {
> + kcsan_release();
> instrument_atomic_read_write(v, sizeof(*v));
> return arch_atomic_long_fetch_and_release(i, v);
> }
> @@ -1544,6 +1647,7 @@ atomic_long_andnot(long i, atomic_long_t
> static __always_inline long
> atomic_long_fetch_andnot(long i, atomic_long_t *v)
> {
> + kcsan_mb();
> instrument_atomic_read_write(v, sizeof(*v));
> return arch_atomic_long_fetch_andnot(i, v);
> }
> @@ -1558,6 +1662,7 @@ atomic_long_fetch_andnot_acquire(long i,
> static __always_inline long
> atomic_long_fetch_andnot_release(long i, atomic_long_t *v)
> {
> + kcsan_release();
> instrument_atomic_read_write(v, sizeof(*v));
> return arch_atomic_long_fetch_andnot_release(i, v);
> }
> @@ -1579,6 +1684,7 @@ atomic_long_or(long i, atomic_long_t *v)
> static __always_inline long
> atomic_long_fetch_or(long i, atomic_long_t *v)
> {
> + kcsan_mb();
> instrument_atomic_read_write(v, sizeof(*v));
> return arch_atomic_long_fetch_or(i, v);
> }
> @@ -1593,6 +1699,7 @@ atomic_long_fetch_or_acquire(long i, ato
> static __always_inline long
> atomic_long_fetch_or_release(long i, atomic_long_t *v)
> {
> + kcsan_release();
> instrument_atomic_read_write(v, sizeof(*v));
> return arch_atomic_long_fetch_or_release(i, v);
> }
> @@ -1614,6 +1721,7 @@ atomic_long_xor(long i, atomic_long_t *v
> static __always_inline long
> atomic_long_fetch_xor(long i, atomic_long_t *v)
> {
> + kcsan_mb();
> instrument_atomic_read_write(v, sizeof(*v));
> return arch_atomic_long_fetch_xor(i, v);
> }
> @@ -1628,6 +1736,7 @@ atomic_long_fetch_xor_acquire(long i, at
> static __always_inline long
> atomic_long_fetch_xor_release(long i, atomic_long_t *v)
> {
> + kcsan_release();
> instrument_atomic_read_write(v, sizeof(*v));
> return arch_atomic_long_fetch_xor_release(i, v);
> }
> @@ -1642,6 +1751,7 @@ atomic_long_fetch_xor_relaxed(long i, at
> static __always_inline long
> atomic_long_xchg(atomic_long_t *v, long i)
> {
> + kcsan_mb();
> instrument_atomic_read_write(v, sizeof(*v));
> return arch_atomic_long_xchg(v, i);
> }
> @@ -1656,6 +1766,7 @@ atomic_long_xchg_acquire(atomic_long_t *
> static __always_inline long
> atomic_long_xchg_release(atomic_long_t *v, long i)
> {
> + kcsan_release();
> instrument_atomic_read_write(v, sizeof(*v));
> return arch_atomic_long_xchg_release(v, i);
> }
> @@ -1670,6 +1781,7 @@ atomic_long_xchg_relaxed(atomic_long_t *
> static __always_inline long
> atomic_long_cmpxchg(atomic_long_t *v, long old, long new)
> {
> + kcsan_mb();
> instrument_atomic_read_write(v, sizeof(*v));
> return arch_atomic_long_cmpxchg(v, old, new);
> }
> @@ -1684,6 +1796,7 @@ atomic_long_cmpxchg_acquire(atomic_long_
> static __always_inline long
> atomic_long_cmpxchg_release(atomic_long_t *v, long old, long new)
> {
> + kcsan_release();
> instrument_atomic_read_write(v, sizeof(*v));
> return arch_atomic_long_cmpxchg_release(v, old, new);
> }
> @@ -1698,6 +1811,7 @@ atomic_long_cmpxchg_relaxed(atomic_long_
> static __always_inline bool
> atomic_long_try_cmpxchg(atomic_long_t *v, long *old, long new)
> {
> + kcsan_mb();
> instrument_atomic_read_write(v, sizeof(*v));
> instrument_read_write(old, sizeof(*old));
> return arch_atomic_long_try_cmpxchg(v, old, new);
> @@ -1714,6 +1828,7 @@ atomic_long_try_cmpxchg_acquire(atomic_l
> static __always_inline bool
> atomic_long_try_cmpxchg_release(atomic_long_t *v, long *old, long new)
> {
> + kcsan_release();
> instrument_atomic_read_write(v, sizeof(*v));
> instrument_read_write(old, sizeof(*old));
> return arch_atomic_long_try_cmpxchg_release(v, old, new);
> @@ -1730,6 +1845,7 @@ atomic_long_try_cmpxchg_relaxed(atomic_l
> static __always_inline bool
> atomic_long_sub_and_test(long i, atomic_long_t *v)
> {
> + kcsan_mb();
> instrument_atomic_read_write(v, sizeof(*v));
> return arch_atomic_long_sub_and_test(i, v);
> }
> @@ -1737,6 +1853,7 @@ atomic_long_sub_and_test(long i, atomic_
> static __always_inline bool
> atomic_long_dec_and_test(atomic_long_t *v)
> {
> + kcsan_mb();
> instrument_atomic_read_write(v, sizeof(*v));
> return arch_atomic_long_dec_and_test(v);
> }
> @@ -1744,6 +1861,7 @@ atomic_long_dec_and_test(atomic_long_t *
> static __always_inline bool
> atomic_long_inc_and_test(atomic_long_t *v)
> {
> + kcsan_mb();
> instrument_atomic_read_write(v, sizeof(*v));
> return arch_atomic_long_inc_and_test(v);
> }
> @@ -1751,6 +1869,7 @@ atomic_long_inc_and_test(atomic_long_t *
> static __always_inline bool
> atomic_long_add_negative(long i, atomic_long_t *v)
> {
> + kcsan_mb();
> instrument_atomic_read_write(v, sizeof(*v));
> return arch_atomic_long_add_negative(i, v);
> }
> @@ -1758,6 +1877,7 @@ atomic_long_add_negative(long i, atomic_
> static __always_inline long
> atomic_long_fetch_add_unless(atomic_long_t *v, long a, long u)
> {
> + kcsan_mb();
> instrument_atomic_read_write(v, sizeof(*v));
> return arch_atomic_long_fetch_add_unless(v, a, u);
> }
> @@ -1765,6 +1885,7 @@ atomic_long_fetch_add_unless(atomic_long
> static __always_inline bool
> atomic_long_add_unless(atomic_long_t *v, long a, long u)
> {
> + kcsan_mb();
> instrument_atomic_read_write(v, sizeof(*v));
> return arch_atomic_long_add_unless(v, a, u);
> }
> @@ -1772,6 +1893,7 @@ atomic_long_add_unless(atomic_long_t *v,
> static __always_inline bool
> atomic_long_inc_not_zero(atomic_long_t *v)
> {
> + kcsan_mb();
> instrument_atomic_read_write(v, sizeof(*v));
> return arch_atomic_long_inc_not_zero(v);
> }
> @@ -1779,6 +1901,7 @@ atomic_long_inc_not_zero(atomic_long_t *
> static __always_inline bool
> atomic_long_inc_unless_negative(atomic_long_t *v)
> {
> + kcsan_mb();
> instrument_atomic_read_write(v, sizeof(*v));
> return arch_atomic_long_inc_unless_negative(v);
> }
> @@ -1786,6 +1909,7 @@ atomic_long_inc_unless_negative(atomic_l
> static __always_inline bool
> atomic_long_dec_unless_positive(atomic_long_t *v)
> {
> + kcsan_mb();
> instrument_atomic_read_write(v, sizeof(*v));
> return arch_atomic_long_dec_unless_positive(v);
> }
> @@ -1793,6 +1917,7 @@ atomic_long_dec_unless_positive(atomic_l
> static __always_inline long
> atomic_long_dec_if_positive(atomic_long_t *v)
> {
> + kcsan_mb();
> instrument_atomic_read_write(v, sizeof(*v));
> return arch_atomic_long_dec_if_positive(v);
> }
> @@ -1814,6 +1939,7 @@ atomic_long_dec_if_positive(atomic_long_
> #define atomic_long_dec_and_test_ofl(v, L) \
> ({ \
> typeof(v) __ai_v = (v); \
> + kcsan_mb(); \
> instrument_atomic_read_write(__ai_v, sizeof(*__ai_v)); \
> arch_atomic_long_dec_and_test_ofl(__ai_v, L); \
> })
> @@ -1821,6 +1947,7 @@ atomic_long_dec_if_positive(atomic_long_
> #define xchg(ptr, ...) \
> ({ \
> typeof(ptr) __ai_ptr = (ptr); \
> + kcsan_mb(); \
> instrument_atomic_read_write(__ai_ptr, sizeof(*__ai_ptr)); \
> arch_xchg(__ai_ptr, __VA_ARGS__); \
> })
> @@ -1835,6 +1962,7 @@ atomic_long_dec_if_positive(atomic_long_
> #define xchg_release(ptr, ...) \
> ({ \
> typeof(ptr) __ai_ptr = (ptr); \
> + kcsan_release(); \
> instrument_atomic_read_write(__ai_ptr, sizeof(*__ai_ptr)); \
> arch_xchg_release(__ai_ptr, __VA_ARGS__); \
> })
> @@ -1849,6 +1977,7 @@ atomic_long_dec_if_positive(atomic_long_
> #define cmpxchg(ptr, ...) \
> ({ \
> typeof(ptr) __ai_ptr = (ptr); \
> + kcsan_mb(); \
> instrument_atomic_read_write(__ai_ptr, sizeof(*__ai_ptr)); \
> arch_cmpxchg(__ai_ptr, __VA_ARGS__); \
> })
> @@ -1863,6 +1992,7 @@ atomic_long_dec_if_positive(atomic_long_
> #define cmpxchg_release(ptr, ...) \
> ({ \
> typeof(ptr) __ai_ptr = (ptr); \
> + kcsan_release(); \
> instrument_atomic_read_write(__ai_ptr, sizeof(*__ai_ptr)); \
> arch_cmpxchg_release(__ai_ptr, __VA_ARGS__); \
> })
> @@ -1877,6 +2007,7 @@ atomic_long_dec_if_positive(atomic_long_
> #define cmpxchg64(ptr, ...) \
> ({ \
> typeof(ptr) __ai_ptr = (ptr); \
> + kcsan_mb(); \
> instrument_atomic_read_write(__ai_ptr, sizeof(*__ai_ptr)); \
> arch_cmpxchg64(__ai_ptr, __VA_ARGS__); \
> })
> @@ -1891,6 +2022,7 @@ atomic_long_dec_if_positive(atomic_long_
> #define cmpxchg64_release(ptr, ...) \
> ({ \
> typeof(ptr) __ai_ptr = (ptr); \
> + kcsan_release(); \
> instrument_atomic_read_write(__ai_ptr, sizeof(*__ai_ptr)); \
> arch_cmpxchg64_release(__ai_ptr, __VA_ARGS__); \
> })
> @@ -1906,6 +2038,7 @@ atomic_long_dec_if_positive(atomic_long_
> ({ \
> typeof(ptr) __ai_ptr = (ptr); \
> typeof(oldp) __ai_oldp = (oldp); \
> + kcsan_mb(); \
> instrument_atomic_read_write(__ai_ptr, sizeof(*__ai_ptr)); \
> instrument_read_write(__ai_oldp, sizeof(*__ai_oldp)); \
> arch_try_cmpxchg(__ai_ptr, __ai_oldp, __VA_ARGS__); \
> @@ -1924,6 +2057,7 @@ atomic_long_dec_if_positive(atomic_long_
> ({ \
> typeof(ptr) __ai_ptr = (ptr); \
> typeof(oldp) __ai_oldp = (oldp); \
> + kcsan_release(); \
> instrument_atomic_read_write(__ai_ptr, sizeof(*__ai_ptr)); \
> instrument_read_write(__ai_oldp, sizeof(*__ai_oldp)); \
> arch_try_cmpxchg_release(__ai_ptr, __ai_oldp, __VA_ARGS__); \
> @@ -1941,6 +2075,7 @@ atomic_long_dec_if_positive(atomic_long_
> #define cmpxchg_local(ptr, ...) \
> ({ \
> typeof(ptr) __ai_ptr = (ptr); \
> + kcsan_mb(); \
> instrument_atomic_read_write(__ai_ptr, sizeof(*__ai_ptr)); \
> arch_cmpxchg_local(__ai_ptr, __VA_ARGS__); \
> })
> @@ -1948,6 +2083,7 @@ atomic_long_dec_if_positive(atomic_long_
> #define cmpxchg64_local(ptr, ...) \
> ({ \
> typeof(ptr) __ai_ptr = (ptr); \
> + kcsan_mb(); \
> instrument_atomic_read_write(__ai_ptr, sizeof(*__ai_ptr)); \
> arch_cmpxchg64_local(__ai_ptr, __VA_ARGS__); \
> })
> @@ -1955,6 +2091,7 @@ atomic_long_dec_if_positive(atomic_long_
> #define sync_cmpxchg(ptr, ...) \
> ({ \
> typeof(ptr) __ai_ptr = (ptr); \
> + kcsan_mb(); \
> instrument_atomic_read_write(__ai_ptr, sizeof(*__ai_ptr)); \
> arch_sync_cmpxchg(__ai_ptr, __VA_ARGS__); \
> })
> @@ -1962,6 +2099,7 @@ atomic_long_dec_if_positive(atomic_long_
> #define cmpxchg_double(ptr, ...) \
> ({ \
> typeof(ptr) __ai_ptr = (ptr); \
> + kcsan_mb(); \
> instrument_atomic_read_write(__ai_ptr, 2 * sizeof(*__ai_ptr)); \
> arch_cmpxchg_double(__ai_ptr, __VA_ARGS__); \
> })
> @@ -1969,10 +2107,11 @@ atomic_long_dec_if_positive(atomic_long_
> #define cmpxchg_double_local(ptr, ...) \
> ({ \
> typeof(ptr) __ai_ptr = (ptr); \
> + kcsan_mb(); \
> instrument_atomic_read_write(__ai_ptr, 2 * sizeof(*__ai_ptr)); \
> arch_cmpxchg_double_local(__ai_ptr, __VA_ARGS__); \
> })
>
>
> #endif /* _LINUX_ATOMIC_INSTRUMENTED_H */
> -// ca9d985faafbba0e0827441def0f010d3040d62d
> +// 539756d4ae3f55016f5a2101983e0eed82a9b303
> --- a/scripts/atomic/atomic-tbl.sh
> +++ b/scripts/atomic/atomic-tbl.sh
> @@ -42,6 +42,12 @@ meta_has_macro()
> meta_in "$1" "mn"
> }
>
> +#meta_has_rmw(meta)
> +meta_has_rmw()
> +{
> + ! meta_in "$1" "sl"
> +}
> +
> #find_fallback_template(pfx, name, sfx, order)
> find_fallback_template()
> {
> --- a/scripts/atomic/gen-atomic-instrumented.sh
> +++ b/scripts/atomic/gen-atomic-instrumented.sh
> @@ -5,6 +5,17 @@ ATOMICDIR=$(dirname $0)
>
> . ${ATOMICDIR}/atomic-tbl.sh
>
> +#gen_linebreak(meta)
> +gen_linebreak()
> +{
> + local meta="$1"; shift
> +
> + if meta_has_macro "${meta}"; then
> + printf " \\"
> + fi
> + printf "\n"
> +}
> +
> #gen_param_check(meta, arg)
> gen_param_check()
> {
> @@ -38,17 +49,22 @@ gen_param_check()
> fi
>
> printf "\tinstrument_${pfx}${rw}(${name}, ${mult}sizeof(*${name}));"
> - if meta_has_macro "${meta}"; then
> - printf " \\"
> - fi
> - printf "\n"
> -
> + gen_linebreak "${meta}"
> }
>
> -#gen_params_checks(meta, arg...)
> +#gen_params_checks(meta, order, arg...)
> gen_params_checks()
> {
> local meta="$1"; shift
> + local order="$1"; shift
> +
> + if [ "${order}" = "_release" ]; then
> + printf "\tkcsan_release();"
> + gen_linebreak "${meta}"
> + elif [ -z "${order}" ] && meta_has_rmw "${meta}" && meta_has_ret "${meta}"; then
> + printf "\tkcsan_mb();"
> + gen_linebreak "${meta}"
> + fi
>
> while [ "$#" -gt 0 ]; do
> gen_param_check "$meta" "$1"
> @@ -120,7 +136,7 @@ gen_proto_order_variant()
> atomicname="${pfx}${name}${sfx}${order}"
> fi
>
> - local checks="$(gen_params_checks "${meta}" "$@")"
> + local checks="$(gen_params_checks "${meta}" "${order}" "$@")"
> local args="$(gen_args "$@")"
>
> if meta_has_macro "${meta}"; then
^ permalink raw reply [flat|nested] 34+ messages in thread
* Re: [PATCH v2 0/9] refcount: Improve code-gen
2021-12-13 14:42 ` Marco Elver
@ 2021-12-13 16:11 ` Peter Zijlstra
0 siblings, 0 replies; 34+ messages in thread
From: Peter Zijlstra @ 2021-12-13 16:11 UTC (permalink / raw)
To: Marco Elver
Cc: will, boqun.feng, linux-kernel, x86, mark.rutland, keescook, hch,
torvalds, axboe, paulmck
On Mon, Dec 13, 2021 at 03:42:34PM +0100, Marco Elver wrote:
> On Mon, Dec 13, 2021 at 01:20PM +0100, Peter Zijlstra wrote:
> >
> > Also, since this will conflict most mighty with Marco's kcsan work in
> > the rcu tree, I've written the below patch as a replacement for the
> > instrumentation patch in that series.
> >
> > It depends on other bits in that series so it cannot be applied here,
> > but will come in handy when trying to resolve the merge conflict.
> >
> > ---
> > Subject: locking/atomics, kcsan: Add instrumentation for barriers
> > From: Peter Zijlstra <peterz@infradead.org>
> > Date: Thu Dec 9 17:08:16 CET 2021
> >
> > Adds the required KCSAN instrumentation for barriers of atomics.
> >
> > [adapted from https://lkml.kernel.org/r/20211130114433.2580590-17-elver@google.com]
> > Originally-by: Marco Elver <elver@google.com>
> > Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
>
> Thanks!
>
> I wanted to test this, but can't quite figure out which branches I need
> to merge together to get it to apply. I assume -rcu + your series? Or
> the updated series not yet sent?
I think I applied the patches from your series up-to, but not including,
the atomic-instrument patch, then the first few patches of this posting
which cause the rejects and then this patch.
I've not attempted the actual git-merge or did much testing on the
results.
^ permalink raw reply [flat|nested] 34+ messages in thread
* Re: [PATCH v2 8/9] atomic,x86: Alternative atomic_*_overflow() scheme
2021-12-10 16:16 ` [PATCH v2 8/9] atomic,x86: Alternative atomic_*_overflow() scheme Peter Zijlstra
2021-12-10 16:53 ` Linus Torvalds
@ 2021-12-13 16:43 ` Peter Zijlstra
2021-12-13 17:29 ` Marco Elver
2021-12-13 18:11 ` Linus Torvalds
1 sibling, 2 replies; 34+ messages in thread
From: Peter Zijlstra @ 2021-12-13 16:43 UTC (permalink / raw)
To: will, boqun.feng
Cc: linux-kernel, x86, mark.rutland, elver, keescook, hch, torvalds, axboe
On Fri, Dec 10, 2021 at 05:16:26PM +0100, Peter Zijlstra wrote:
> Shift the overflow range from [0,INT_MIN] to [-1,INT_MIN], this allows
> optimizing atomic_inc_overflow() to use "jle" to detect increment
> from free-or-negative (with -1 being the new free and it's increment
> being 0 which sets ZF).
>
> This then obviously changes atomic_dec*_overflow() since it must now
> detect the 0->-1 transition rather than the 1->0. Luckily this is
> reflected in the carry flag (since we need to borrow to decrement 0).
> However this means decrement must now use the SUB instruction with a
> literal, since DEC doesn't set CF.
>
> This then gives the following primitives:
>
> [-1, INT_MIN] [0, INT_MIN]
>
> inc() inc()
> lock inc %[var] mov $-1, %[reg]
> jle error-free-or-negative lock xadd %[reg], %[var]
> test %[reg], %[reg]
> jle error-zero-or-negative
>
> dec() dec()
> lock sub $1, %[var] lock dec %[var]
> jc error-to-free jle error-zero-or-negative
> jl error-from-negative
>
> dec_and_test() dec_and_test()
> lock sub $1, %[var] lock dec %[var]
> jc do-free jl error-from-negative
> jl error-from-negative je do-free
>
> Make sure to set ATOMIC_OVERFLOW_OFFSET to 1 such that other code
> interacting with these primitives can re-center 0.
So Marco was expressing doubt about this exact interface for the
atomic_*_overflow() functions, since it's extremely easy to get the
whole ATOMIC_OVERFLOW_OFFSET thing wrong.
Since the current ops are strictly those that require inline asm, the
interface is fairly incomplete, which forces anybody who's going to use
these to provide whatever is missing. eg. atomic_inc_not_zero_overflow()
for example.
Another proposal had the user supply the offset as a compile time
constant to the function itself, raising a build-bug for any unsupported
offset. This would ensure the caller is at least aware of any non-zero
offset... still not going to really be dummy proof either.
Alternatively we could provide a more complete set of ops and/or a whole
new type, but... I'm not sure about that either.
I suppose I can try and do something like refcount_overflow_t and
implement the whole current refcount API in terms of that. Basically
everywhere we currently do refcount_warn_saturate() would become goto
label.
And then refcount_t could be a thin wrapper on top of that. But urgh...
lots of work, very little gain.
So what do we do? Keep things as is, and think about it again once we
got the first bug in hand, preemptively add a few ops or go completely
overboard?
Obviously I'm all for keeping things as is (less work for this lazy
bastard etc..)
^ permalink raw reply [flat|nested] 34+ messages in thread
* Re: [PATCH v2 8/9] atomic,x86: Alternative atomic_*_overflow() scheme
2021-12-13 16:43 ` Peter Zijlstra
@ 2021-12-13 17:29 ` Marco Elver
2021-12-13 18:11 ` Linus Torvalds
1 sibling, 0 replies; 34+ messages in thread
From: Marco Elver @ 2021-12-13 17:29 UTC (permalink / raw)
To: Peter Zijlstra
Cc: will, boqun.feng, linux-kernel, x86, mark.rutland, keescook, hch,
torvalds, axboe
On Mon, Dec 13, 2021 at 05:43PM +0100, Peter Zijlstra wrote:
> On Fri, Dec 10, 2021 at 05:16:26PM +0100, Peter Zijlstra wrote:
> > Shift the overflow range from [0,INT_MIN] to [-1,INT_MIN], this allows
> > optimizing atomic_inc_overflow() to use "jle" to detect increment
> > from free-or-negative (with -1 being the new free and it's increment
> > being 0 which sets ZF).
> >
> > This then obviously changes atomic_dec*_overflow() since it must now
> > detect the 0->-1 transition rather than the 1->0. Luckily this is
> > reflected in the carry flag (since we need to borrow to decrement 0).
> > However this means decrement must now use the SUB instruction with a
> > literal, since DEC doesn't set CF.
> >
> > This then gives the following primitives:
> >
> > [-1, INT_MIN] [0, INT_MIN]
> >
> > inc() inc()
> > lock inc %[var] mov $-1, %[reg]
> > jle error-free-or-negative lock xadd %[reg], %[var]
> > test %[reg], %[reg]
> > jle error-zero-or-negative
> >
> > dec() dec()
> > lock sub $1, %[var] lock dec %[var]
> > jc error-to-free jle error-zero-or-negative
> > jl error-from-negative
> >
> > dec_and_test() dec_and_test()
> > lock sub $1, %[var] lock dec %[var]
> > jc do-free jl error-from-negative
> > jl error-from-negative je do-free
> >
> > Make sure to set ATOMIC_OVERFLOW_OFFSET to 1 such that other code
> > interacting with these primitives can re-center 0.
>
> So Marco was expressing doubt about this exact interface for the
> atomic_*_overflow() functions, since it's extremely easy to get the
> whole ATOMIC_OVERFLOW_OFFSET thing wrong.
>
> Since the current ops are strictly those that require inline asm, the
> interface is fairly incomplete, which forces anybody who's going to use
> these to provide whatever is missing. eg. atomic_inc_not_zero_overflow()
> for example.
>
> Another proposal had the user supply the offset as a compile time
> constant to the function itself, raising a build-bug for any unsupported
> offset. This would ensure the caller is at least aware of any non-zero
> offset... still not going to really be dummy proof either.
In the spirit of making the interface harder to misuse, this would at
least ensure that non-refcount_t code that wants to use
atomic_*overflow() is 100% aware of this. Which is half of the issue I
think.
The other half is code using the actual values, and ensuring it's offset
correctly. This might also be an issue in e.g. refcount_t, if someone
wants to modify or extend it, although it's easy enough to audit and
review in such central data structures as refcount_t.
> Alternatively we could provide a more complete set of ops and/or a whole
> new type, but... I'm not sure about that either.
>
> I suppose I can try and do something like refcount_overflow_t and
> implement the whole current refcount API in terms of that. Basically
> everywhere we currently do refcount_warn_saturate() would become goto
> label.
>
> And then refcount_t could be a thin wrapper on top of that. But urgh...
> lots of work, very little gain.
>
> So what do we do? Keep things as is, and think about it again once we
> got the first bug in hand, preemptively add a few ops or go completely
> overboard?
>
> Obviously I'm all for keeping things as is (less work for this lazy
> bastard etc..)
I think an entirely new type might be overkill, but at the very least
designing the interface such that it's
A. either impossible to not notice the fact atomic_*overflow()
works in terms of offsets, or
B. not even exposing this detail.
#A can be achieved with supplying offsets to atomic_*overflow(). #B can
be achieved with new wrapper types -- however, if we somehow ensure that
refcount_t remains the only user of atomic_*overflow(), I'd consider
refcount_t a wrapper type already, so no need to add more.
Regarding the interface, it'd be nice if it could be made harder to
misuse, but I don't know how much it'll buy over what it is right now,
since we don't even know if there'll be other users of this yet.
But here are some more issues I just thought of:
1. A minor issue is inspecting raw values, like in register
dumps. refcount_t will now look different on x86 vs. other
architectures.
2. Yet another potentially larger issue is if some code
kmalloc()s some structs containing refcount_t, and relies on
GFP_ZERO (kzalloc()) to initialize their data assuming that a
freshly initialized refcount_t contains 0.
I think #1 is a cosmetic issue, which we might be able to live with.
However, I have absolutely no idea how we can audit or even prevent #2
from happening. With #2 in mind, and with C's lack of enforcing any kind
of "constructors", the interface and implementation we end up with is
going to result in near-impossible to debug issues sooner or later.
Thanks,
-- Marco
^ permalink raw reply [flat|nested] 34+ messages in thread
* Re: [PATCH v2 8/9] atomic,x86: Alternative atomic_*_overflow() scheme
2021-12-13 16:43 ` Peter Zijlstra
2021-12-13 17:29 ` Marco Elver
@ 2021-12-13 18:11 ` Linus Torvalds
2021-12-13 18:18 ` Marco Elver
2021-12-13 18:21 ` Linus Torvalds
1 sibling, 2 replies; 34+ messages in thread
From: Linus Torvalds @ 2021-12-13 18:11 UTC (permalink / raw)
To: Peter Zijlstra
Cc: Will Deacon, Boqun Feng, Linux Kernel Mailing List,
the arch/x86 maintainers, Mark Rutland, Marco Elver, Kees Cook,
Christoph Hellwig, Jens Axboe
On Mon, Dec 13, 2021 at 8:43 AM Peter Zijlstra <peterz@infradead.org> wrote:
>
> So Marco was expressing doubt about this exact interface for the
> atomic_*_overflow() functions, since it's extremely easy to get the
> whole ATOMIC_OVERFLOW_OFFSET thing wrong.
I missed that discussion (maybe it was on irc? Or maybe I just get too
much email).
Anyway, my preferred solution would simply be to make the ref-counting
atomics use a different type.
Voilà, problem solved. You can't really misuse them by mistake,
because you can't access it by mistake.
Sure, it could be a wrapper around 'atomic_t' on architectures that
end up using the generic fallback, so it might be as simple as
typedef atomic_t atomic_ref_t;
in some asm-generic implementation, although I suspect that you'd want
type safety even there, and do
typedef struct { atomic_t atomic_val; } atomic_ref_t;
But then on x86 - and other architectures that might prefer to use
that offset trick because they have flags - I'm not sure it even makes
sense to have anything to do with 'atomic_t' at all, since there would
basically be zero overlap with the regular atomic operations (partly
due to the offset, but partly simply because the 'ref' operations are
simply different).
(Wrt naming: I do think this is more about the "ref" part than the
"overflow" part - thus I'd suggest the "atomic_ref_t" rather than your
ofl naming).
Linus
^ permalink raw reply [flat|nested] 34+ messages in thread
* Re: [PATCH v2 8/9] atomic,x86: Alternative atomic_*_overflow() scheme
2021-12-13 18:11 ` Linus Torvalds
@ 2021-12-13 18:18 ` Marco Elver
2021-12-13 18:24 ` Linus Torvalds
2021-12-13 18:21 ` Linus Torvalds
1 sibling, 1 reply; 34+ messages in thread
From: Marco Elver @ 2021-12-13 18:18 UTC (permalink / raw)
To: Linus Torvalds
Cc: Peter Zijlstra, Will Deacon, Boqun Feng,
Linux Kernel Mailing List, the arch/x86 maintainers,
Mark Rutland, Kees Cook, Christoph Hellwig, Jens Axboe
On Mon, Dec 13, 2021 at 10:11AM -0800, Linus Torvalds wrote:
> On Mon, Dec 13, 2021 at 8:43 AM Peter Zijlstra <peterz@infradead.org> wrote:
> >
> > So Marco was expressing doubt about this exact interface for the
> > atomic_*_overflow() functions, since it's extremely easy to get the
> > whole ATOMIC_OVERFLOW_OFFSET thing wrong.
>
> I missed that discussion (maybe it was on irc? Or maybe I just get too
> much email).
>
> Anyway, my preferred solution would simply be to make the ref-counting
> atomics use a different type.
>
> Voilà, problem solved. You can't really misuse them by mistake,
> because you can't access it by mistake.
>
> Sure, it could be a wrapper around 'atomic_t' on architectures that
> end up using the generic fallback, so it might be as simple as
>
> typedef atomic_t atomic_ref_t;
>
> in some asm-generic implementation, although I suspect that you'd want
> type safety even there, and do
>
> typedef struct { atomic_t atomic_val; } atomic_ref_t;
>
> But then on x86 - and other architectures that might prefer to use
> that offset trick because they have flags - I'm not sure it even makes
> sense to have anything to do with 'atomic_t' at all, since there would
> basically be zero overlap with the regular atomic operations (partly
> due to the offset, but partly simply because the 'ref' operations are
> simply different).
>
> (Wrt naming: I do think this is more about the "ref" part than the
> "overflow" part - thus I'd suggest the "atomic_ref_t" rather than your
> ofl naming).
I'm still genuinely worried about this:
> 2. Yet another potentially larger issue is if some code
> kmalloc()s some structs containing refcount_t, and relies on
> GFP_ZERO (kzalloc()) to initialize their data assuming that a
> freshly initialized refcount_t contains 0.
Even with everything properly wrapped up in atomic_ref_t, it's not going
to prevent mis-initialization via kzalloc() and friends.
I think C won't let us design that misuse out of existence.
Thanks,
-- Marco
^ permalink raw reply [flat|nested] 34+ messages in thread
* Re: [PATCH v2 8/9] atomic,x86: Alternative atomic_*_overflow() scheme
2021-12-13 18:11 ` Linus Torvalds
2021-12-13 18:18 ` Marco Elver
@ 2021-12-13 18:21 ` Linus Torvalds
1 sibling, 0 replies; 34+ messages in thread
From: Linus Torvalds @ 2021-12-13 18:21 UTC (permalink / raw)
To: Peter Zijlstra
Cc: Will Deacon, Boqun Feng, Linux Kernel Mailing List,
the arch/x86 maintainers, Mark Rutland, Marco Elver, Kees Cook,
Christoph Hellwig, Jens Axboe
On Mon, Dec 13, 2021 at 10:11 AM Linus Torvalds
<torvalds@linux-foundation.org> wrote:
>
> But then on x86 - and other architectures that might prefer to use
> that offset trick because they have flags - I'm not sure it even makes
> sense to have anything to do with 'atomic_t' at all [..]
Side note: it might not be just about flags, and not just about things
like "offset-by-one".
We used to have special code for old 32-bit sparc because there you
couldn't actually sanely do 32-bit atomics: you could only really do
24 bits, because the whole first (upper) byte was the atomic lock
byte.
Now, that was too painful because nobody else did that, so these days
32-bit sparc just uses a hashed spinlock instead.
But I think it would be lovely to _design_ the atomic_ref_t to be able
to deal with that odd sparc32 issue too. Not because anybody cares
about 32-bit sparc any more, and not because I think anybody would
ever actually bother to write such code, but because I think it's a
good design goal to kind of aim for: if we're doing an actual
ref-counting data structure, where we do *not* have "int" semantics,
and very much have a concept of overflow, then I think it should
conceptually also work with that odd sparc32 24-byte atomic integer
model.
Was it a broken model? Was it stupid? Yes. Do I ever expect to see it
again? No. But I do think that conceptually we should strive to have
that as a _possible_ model.
In fact, it might be interesting to have something like that as a
debug model, where you have a smaller range for ref-counting, just to
make it easier to test that the code does the right thing for
overflow. 24 bits is a lot easier to overflow, while still being big
enough to work in practice.
So I do think that having a separate type system that simply does not
_work_ with somebody trying to do "atomic_xyz()" on it is the right
way to go.
Linus
^ permalink raw reply [flat|nested] 34+ messages in thread
* Re: [PATCH v2 8/9] atomic,x86: Alternative atomic_*_overflow() scheme
2021-12-13 18:18 ` Marco Elver
@ 2021-12-13 18:24 ` Linus Torvalds
2021-12-13 19:35 ` Marco Elver
0 siblings, 1 reply; 34+ messages in thread
From: Linus Torvalds @ 2021-12-13 18:24 UTC (permalink / raw)
To: Marco Elver
Cc: Peter Zijlstra, Will Deacon, Boqun Feng,
Linux Kernel Mailing List, the arch/x86 maintainers,
Mark Rutland, Kees Cook, Christoph Hellwig, Jens Axboe
On Mon, Dec 13, 2021 at 10:19 AM Marco Elver <elver@google.com> wrote:
>
> I'm still genuinely worried about this:
>
> > 2. Yet another potentially larger issue is if some code
> > kmalloc()s some structs containing refcount_t, and relies on
> > GFP_ZERO (kzalloc()) to initialize their data assuming that a
> > freshly initialized refcount_t contains 0.
>
> Even with everything properly wrapped up in atomic_ref_t, it's not going
> to prevent mis-initialization via kzalloc() and friends.
I agree that it's an issue, but it's not a new issue. We've had the
exact same thing with a lot of other core data structures.
And a ref-count of zero isn't valid _anyway_. When you allocate a
structure, a zero ref-count by definition is wrong. You need to set
the ref-count to the user that allocated it.
So I don't actually think the "implicit zero" is an issue in practice,
because it would be wrong in the first place. Code that relies on
kzmalloc() to initialize a refcount cannot work right.
(And by "cannot" I obviously mean "can, if you do wrong things" - it's
not like it's *impossible* to do an "atomic_inc_ref()" to change a 0
refcount to a 1, but it's both wrong *AND* actively stupid, since an
allocation does not need to set the refcount atomically).
Linus
^ permalink raw reply [flat|nested] 34+ messages in thread
* Re: [PATCH v2 8/9] atomic,x86: Alternative atomic_*_overflow() scheme
2021-12-13 18:24 ` Linus Torvalds
@ 2021-12-13 19:35 ` Marco Elver
0 siblings, 0 replies; 34+ messages in thread
From: Marco Elver @ 2021-12-13 19:35 UTC (permalink / raw)
To: Linus Torvalds
Cc: Peter Zijlstra, Will Deacon, Boqun Feng,
Linux Kernel Mailing List, the arch/x86 maintainers,
Mark Rutland, Kees Cook, Christoph Hellwig, Jens Axboe
[-- Attachment #1: Type: text/plain, Size: 5377 bytes --]
On Mon, Dec 13, 2021 at 10:24AM -0800, Linus Torvalds wrote:
> On Mon, Dec 13, 2021 at 10:19 AM Marco Elver <elver@google.com> wrote:
> >
> > I'm still genuinely worried about this:
> >
> > > 2. Yet another potentially larger issue is if some code
> > > kmalloc()s some structs containing refcount_t, and relies on
> > > GFP_ZERO (kzalloc()) to initialize their data assuming that a
> > > freshly initialized refcount_t contains 0.
> >
> > Even with everything properly wrapped up in atomic_ref_t, it's not going
> > to prevent mis-initialization via kzalloc() and friends.
>
> I agree that it's an issue, but it's not a new issue. We've had the
> exact same thing with a lot of other core data structures.
>
> And a ref-count of zero isn't valid _anyway_. When you allocate a
> structure, a zero ref-count by definition is wrong. You need to set
> the ref-count to the user that allocated it.
>
> So I don't actually think the "implicit zero" is an issue in practice,
> because it would be wrong in the first place. Code that relies on
> kzmalloc() to initialize a refcount cannot work right.
>
> (And by "cannot" I obviously mean "can, if you do wrong things" - it's
> not like it's *impossible* to do an "atomic_inc_ref()" to change a 0
> refcount to a 1, but it's both wrong *AND* actively stupid, since an
> allocation does not need to set the refcount atomically).
I tried to throw syzkaller at this, but just booting results in this
warning:
| WARNING: CPU: 2 PID: 1 at block/blk-mq.c:3080 blk_mq_clear_flush_rq_mapping block/blk-mq.c:3080 [inline]
| WARNING: CPU: 2 PID: 1 at block/blk-mq.c:3080 blk_mq_exit_hctx+0x20e/0x220 block/blk-mq.c:3105
| Modules linked in:
| CPU: 2 PID: 1 Comm: swapper/0 Not tainted 5.16.0-rc5+ #3
| Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-2 04/01/2014
| RIP: 0010:blk_mq_clear_flush_rq_mapping block/blk-mq.c:3080 [inline]
| RIP: 0010:blk_mq_exit_hctx+0x20e/0x220 block/blk-mq.c:3105
| Code: 00 31 d2 bf 9c 00 00 00 e8 7f 20 a2 ff e9 52 ff ff ff e8 65 22 b1 ff 4c 89 e7 e8 6d 77 00 00 e9 58 fe ff ff e8 53 22 b1 ff 90 <0f> 0b 90 e9 7e fe ff ff 66 2e 0f 1f 84 00 00 00 00 00 41 55 41 54
| RSP: 0000:ffff9c10800139f0 EFLAGS: 00010293
| RAX: 0000000000000000 RBX: ffff970c428990b8 RCX: ffffffff9c662ecd
| RDX: ffff970c40880040 RSI: 0000000000000000 RDI: ffff970c4421e200
| RBP: ffff970c43ff9e80 R08: ffff970c43f14fe0 R09: ffff9c1080013a18
| R10: 0000000000000000 R11: 000000000001403d R12: ffff970c4421e200
| R13: ffff970c44237000 R14: 0000000000000100 R15: ffff970c4421e200
| FS: 0000000000000000(0000) GS:ffff970f6fc80000(0000) knlGS:0000000000000000
| CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
| CR2: 0000000000000000 CR3: 00000002c2c0c001 CR4: 0000000000770ee0
| DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
| DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
| PKRU: 55555554
| Call Trace:
| <TASK>
| blk_mq_exit_hw_queues block/blk-mq.c:3130 [inline]
| blk_mq_exit_queue+0x70/0x1a0 block/blk-mq.c:3780
| blk_cleanup_queue+0xba/0x120 block/blk-core.c:368
| __scsi_remove_device+0x77/0x190 drivers/scsi/scsi_sysfs.c:1458
| scsi_probe_and_add_lun+0xb5c/0xfa0 drivers/scsi/scsi_scan.c:1221
| __scsi_scan_target+0x121/0x660 drivers/scsi/scsi_scan.c:1604
| scsi_scan_channel drivers/scsi/scsi_scan.c:1692 [inline]
| scsi_scan_channel+0x90/0xd0 drivers/scsi/scsi_scan.c:1668
| scsi_scan_host_selected+0x117/0x170 drivers/scsi/scsi_scan.c:1721
| do_scsi_scan_host+0xba/0xd0 drivers/scsi/scsi_scan.c:1860
| scsi_scan_host drivers/scsi/scsi_scan.c:1890 [inline]
| scsi_scan_host+0x1cf/0x1f0 drivers/scsi/scsi_scan.c:1878
| virtscsi_probe+0x3a0/0x3f0 drivers/scsi/virtio_scsi.c:915
| virtio_dev_probe+0x1e4/0x2f0 drivers/virtio/virtio.c:273
| call_driver_probe drivers/base/dd.c:517 [inline]
| really_probe.part.0+0xd3/0x320 drivers/base/dd.c:596
| really_probe drivers/base/dd.c:558 [inline]
| __driver_probe_device+0xbf/0x180 drivers/base/dd.c:751
| driver_probe_device+0x27/0xd0 drivers/base/dd.c:781
| __driver_attach drivers/base/dd.c:1140 [inline]
| __driver_attach+0xb4/0x1a0 drivers/base/dd.c:1092
| bus_for_each_dev+0xab/0x100 drivers/base/bus.c:301
| bus_add_driver+0x1c0/0x220 drivers/base/bus.c:618
| driver_register+0xc4/0x140 drivers/base/driver.c:171
| init+0xa0/0xea drivers/char/virtio_console.c:2257
| do_one_initcall+0x58/0x270 init/main.c:1297
| do_initcall_level init/main.c:1370 [inline]
| do_initcalls init/main.c:1386 [inline]
| do_basic_setup init/main.c:1405 [inline]
| kernel_init_freeable+0x1f4/0x259 init/main.c:1610
| kernel_init+0x19/0x180 init/main.c:1499
| ret_from_fork+0x22/0x30 arch/x86/entry/entry_64.S:295
| </TASK>
which is
WARN_ON_ONCE(refcount_read(&flush_rq->ref) != 0);
.config is attached. Reverting this patch resolves the warning. I
haven't been able to figure out which bit of that code assumes that
"freed" is represented by 0 refcount internally. There is an
alloc_pages() with GFP_ZERO in that code, which seems to allocate a
'struct request' pool that contains ->ref?
This just confirms my suspicion that this is a can of worms. We can try
to debug one issue after another until they are no more, but the
fundamental issue of saying that 0 is not 0 is a bug-magnet (in the
absence of real "constructors", which C doesn't have).
Thanks,
-- Marco
[-- Attachment #2: .config --]
[-- Type: text/plain, Size: 134416 bytes --]
#
# Automatically generated file; DO NOT EDIT.
# Linux/x86 5.16.0-rc5 Kernel Configuration
#
CONFIG_CC_VERSION_TEXT="gcc (Debian 11.2.0-10) 11.2.0"
CONFIG_CC_IS_GCC=y
CONFIG_GCC_VERSION=110200
CONFIG_CLANG_VERSION=0
CONFIG_AS_IS_GNU=y
CONFIG_AS_VERSION=23700
CONFIG_LD_IS_BFD=y
CONFIG_LD_VERSION=23700
CONFIG_LLD_VERSION=0
CONFIG_CC_CAN_LINK=y
CONFIG_CC_CAN_LINK_STATIC=y
CONFIG_CC_HAS_ASM_GOTO=y
CONFIG_CC_HAS_ASM_GOTO_OUTPUT=y
CONFIG_CC_HAS_ASM_INLINE=y
CONFIG_CC_HAS_NO_PROFILE_FN_ATTR=y
CONFIG_IRQ_WORK=y
CONFIG_BUILDTIME_TABLE_SORT=y
CONFIG_THREAD_INFO_IN_TASK=y
#
# General setup
#
CONFIG_INIT_ENV_ARG_LIMIT=32
# CONFIG_COMPILE_TEST is not set
# CONFIG_WERROR is not set
CONFIG_LOCALVERSION=""
# CONFIG_LOCALVERSION_AUTO is not set
CONFIG_BUILD_SALT=""
CONFIG_HAVE_KERNEL_GZIP=y
CONFIG_HAVE_KERNEL_BZIP2=y
CONFIG_HAVE_KERNEL_LZMA=y
CONFIG_HAVE_KERNEL_XZ=y
CONFIG_HAVE_KERNEL_LZO=y
CONFIG_HAVE_KERNEL_LZ4=y
CONFIG_HAVE_KERNEL_ZSTD=y
CONFIG_KERNEL_GZIP=y
# CONFIG_KERNEL_BZIP2 is not set
# CONFIG_KERNEL_LZMA is not set
# CONFIG_KERNEL_XZ is not set
# CONFIG_KERNEL_LZO is not set
# CONFIG_KERNEL_LZ4 is not set
# CONFIG_KERNEL_ZSTD is not set
CONFIG_DEFAULT_INIT=""
CONFIG_DEFAULT_HOSTNAME="(none)"
CONFIG_SWAP=y
CONFIG_SYSVIPC=y
CONFIG_SYSVIPC_SYSCTL=y
CONFIG_POSIX_MQUEUE=y
CONFIG_POSIX_MQUEUE_SYSCTL=y
# CONFIG_WATCH_QUEUE is not set
CONFIG_CROSS_MEMORY_ATTACH=y
CONFIG_USELIB=y
CONFIG_AUDIT=y
CONFIG_HAVE_ARCH_AUDITSYSCALL=y
CONFIG_AUDITSYSCALL=y
#
# IRQ subsystem
#
CONFIG_GENERIC_IRQ_PROBE=y
CONFIG_GENERIC_IRQ_SHOW=y
CONFIG_GENERIC_IRQ_EFFECTIVE_AFF_MASK=y
CONFIG_GENERIC_PENDING_IRQ=y
CONFIG_GENERIC_IRQ_MIGRATION=y
CONFIG_HARDIRQS_SW_RESEND=y
CONFIG_IRQ_DOMAIN=y
CONFIG_IRQ_DOMAIN_HIERARCHY=y
CONFIG_GENERIC_MSI_IRQ=y
CONFIG_GENERIC_MSI_IRQ_DOMAIN=y
CONFIG_IRQ_MSI_IOMMU=y
CONFIG_GENERIC_IRQ_MATRIX_ALLOCATOR=y
CONFIG_GENERIC_IRQ_RESERVATION_MODE=y
CONFIG_IRQ_FORCED_THREADING=y
CONFIG_SPARSE_IRQ=y
# CONFIG_GENERIC_IRQ_DEBUGFS is not set
# end of IRQ subsystem
CONFIG_CLOCKSOURCE_WATCHDOG=y
CONFIG_ARCH_CLOCKSOURCE_INIT=y
CONFIG_CLOCKSOURCE_VALIDATE_LAST_CYCLE=y
CONFIG_GENERIC_TIME_VSYSCALL=y
CONFIG_GENERIC_CLOCKEVENTS=y
CONFIG_GENERIC_CLOCKEVENTS_BROADCAST=y
CONFIG_GENERIC_CLOCKEVENTS_MIN_ADJUST=y
CONFIG_GENERIC_CMOS_UPDATE=y
CONFIG_HAVE_POSIX_CPU_TIMERS_TASK_WORK=y
CONFIG_POSIX_CPU_TIMERS_TASK_WORK=y
# CONFIG_TIME_KUNIT_TEST is not set
#
# Timers subsystem
#
CONFIG_TICK_ONESHOT=y
CONFIG_NO_HZ_COMMON=y
# CONFIG_HZ_PERIODIC is not set
CONFIG_NO_HZ_IDLE=y
# CONFIG_NO_HZ_FULL is not set
CONFIG_NO_HZ=y
CONFIG_HIGH_RES_TIMERS=y
# end of Timers subsystem
CONFIG_BPF=y
CONFIG_HAVE_EBPF_JIT=y
CONFIG_ARCH_WANT_DEFAULT_BPF_JIT=y
#
# BPF subsystem
#
# CONFIG_BPF_SYSCALL is not set
# CONFIG_BPF_JIT is not set
# end of BPF subsystem
CONFIG_PREEMPT_BUILD=y
# CONFIG_PREEMPT_NONE is not set
# CONFIG_PREEMPT_VOLUNTARY is not set
CONFIG_PREEMPT=y
CONFIG_PREEMPT_COUNT=y
CONFIG_PREEMPTION=y
CONFIG_PREEMPT_DYNAMIC=y
# CONFIG_SCHED_CORE is not set
#
# CPU/Task time and stats accounting
#
CONFIG_TICK_CPU_ACCOUNTING=y
# CONFIG_VIRT_CPU_ACCOUNTING_GEN is not set
# CONFIG_IRQ_TIME_ACCOUNTING is not set
CONFIG_BSD_PROCESS_ACCT=y
# CONFIG_BSD_PROCESS_ACCT_V3 is not set
CONFIG_TASKSTATS=y
CONFIG_TASK_DELAY_ACCT=y
CONFIG_TASK_XACCT=y
CONFIG_TASK_IO_ACCOUNTING=y
# CONFIG_PSI is not set
# end of CPU/Task time and stats accounting
CONFIG_CPU_ISOLATION=y
#
# RCU Subsystem
#
CONFIG_TREE_RCU=y
CONFIG_PREEMPT_RCU=y
# CONFIG_RCU_EXPERT is not set
CONFIG_SRCU=y
CONFIG_TREE_SRCU=y
CONFIG_TASKS_RCU_GENERIC=y
CONFIG_TASKS_RCU=y
CONFIG_TASKS_RUDE_RCU=y
CONFIG_TASKS_TRACE_RCU=y
CONFIG_RCU_STALL_COMMON=y
CONFIG_RCU_NEED_SEGCBLIST=y
# end of RCU Subsystem
# CONFIG_IKCONFIG is not set
# CONFIG_IKHEADERS is not set
CONFIG_LOG_BUF_SHIFT=18
CONFIG_LOG_CPU_MAX_BUF_SHIFT=12
CONFIG_PRINTK_SAFE_LOG_BUF_SHIFT=13
# CONFIG_PRINTK_INDEX is not set
CONFIG_HAVE_UNSTABLE_SCHED_CLOCK=y
#
# Scheduler features
#
# CONFIG_UCLAMP_TASK is not set
# end of Scheduler features
CONFIG_ARCH_SUPPORTS_NUMA_BALANCING=y
CONFIG_ARCH_WANT_BATCHED_UNMAP_TLB_FLUSH=y
CONFIG_CC_HAS_INT128=y
CONFIG_CC_IMPLICIT_FALLTHROUGH="-Wimplicit-fallthrough=5"
CONFIG_ARCH_SUPPORTS_INT128=y
# CONFIG_NUMA_BALANCING is not set
CONFIG_CGROUPS=y
CONFIG_PAGE_COUNTER=y
CONFIG_MEMCG=y
CONFIG_MEMCG_SWAP=y
CONFIG_MEMCG_KMEM=y
# CONFIG_BLK_CGROUP is not set
CONFIG_CGROUP_SCHED=y
CONFIG_FAIR_GROUP_SCHED=y
# CONFIG_CFS_BANDWIDTH is not set
# CONFIG_RT_GROUP_SCHED is not set
# CONFIG_CGROUP_PIDS is not set
# CONFIG_CGROUP_RDMA is not set
CONFIG_CGROUP_FREEZER=y
# CONFIG_CGROUP_HUGETLB is not set
CONFIG_CPUSETS=y
CONFIG_PROC_PID_CPUSET=y
# CONFIG_CGROUP_DEVICE is not set
CONFIG_CGROUP_CPUACCT=y
# CONFIG_CGROUP_PERF is not set
# CONFIG_CGROUP_MISC is not set
# CONFIG_CGROUP_DEBUG is not set
CONFIG_NAMESPACES=y
CONFIG_UTS_NS=y
CONFIG_TIME_NS=y
CONFIG_IPC_NS=y
# CONFIG_USER_NS is not set
CONFIG_PID_NS=y
CONFIG_NET_NS=y
# CONFIG_CHECKPOINT_RESTORE is not set
# CONFIG_SCHED_AUTOGROUP is not set
# CONFIG_SYSFS_DEPRECATED is not set
CONFIG_RELAY=y
CONFIG_BLK_DEV_INITRD=y
CONFIG_INITRAMFS_SOURCE=""
CONFIG_RD_GZIP=y
CONFIG_RD_BZIP2=y
CONFIG_RD_LZMA=y
CONFIG_RD_XZ=y
CONFIG_RD_LZO=y
CONFIG_RD_LZ4=y
CONFIG_RD_ZSTD=y
# CONFIG_BOOT_CONFIG is not set
CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE=y
# CONFIG_CC_OPTIMIZE_FOR_SIZE is not set
CONFIG_LD_ORPHAN_WARN=y
CONFIG_SYSCTL=y
CONFIG_HAVE_UID16=y
CONFIG_SYSCTL_EXCEPTION_TRACE=y
CONFIG_HAVE_PCSPKR_PLATFORM=y
CONFIG_EXPERT=y
CONFIG_UID16=y
CONFIG_MULTIUSER=y
CONFIG_SGETMASK_SYSCALL=y
CONFIG_SYSFS_SYSCALL=y
CONFIG_FHANDLE=y
CONFIG_POSIX_TIMERS=y
CONFIG_PRINTK=y
CONFIG_BUG=y
CONFIG_ELF_CORE=y
CONFIG_PCSPKR_PLATFORM=y
CONFIG_BASE_FULL=y
CONFIG_FUTEX=y
CONFIG_FUTEX_PI=y
CONFIG_EPOLL=y
CONFIG_SIGNALFD=y
CONFIG_TIMERFD=y
CONFIG_EVENTFD=y
CONFIG_SHMEM=y
CONFIG_AIO=y
CONFIG_IO_URING=y
CONFIG_ADVISE_SYSCALLS=y
CONFIG_MEMBARRIER=y
CONFIG_KALLSYMS=y
# CONFIG_KALLSYMS_ALL is not set
CONFIG_KALLSYMS_ABSOLUTE_PERCPU=y
CONFIG_KALLSYMS_BASE_RELATIVE=y
# CONFIG_USERFAULTFD is not set
CONFIG_ARCH_HAS_MEMBARRIER_SYNC_CORE=y
CONFIG_KCMP=y
CONFIG_RSEQ=y
# CONFIG_DEBUG_RSEQ is not set
# CONFIG_EMBEDDED is not set
CONFIG_HAVE_PERF_EVENTS=y
# CONFIG_PC104 is not set
#
# Kernel Performance Events And Counters
#
CONFIG_PERF_EVENTS=y
# CONFIG_DEBUG_PERF_USE_VMALLOC is not set
# end of Kernel Performance Events And Counters
CONFIG_VM_EVENT_COUNTERS=y
CONFIG_SLUB_DEBUG=y
# CONFIG_COMPAT_BRK is not set
# CONFIG_SLAB is not set
CONFIG_SLUB=y
# CONFIG_SLOB is not set
CONFIG_SLAB_MERGE_DEFAULT=y
# CONFIG_SLAB_FREELIST_RANDOM is not set
# CONFIG_SLAB_FREELIST_HARDENED is not set
# CONFIG_SHUFFLE_PAGE_ALLOCATOR is not set
CONFIG_SLUB_CPU_PARTIAL=y
CONFIG_SYSTEM_DATA_VERIFICATION=y
CONFIG_PROFILING=y
CONFIG_TRACEPOINTS=y
# end of General setup
CONFIG_64BIT=y
CONFIG_X86_64=y
CONFIG_X86=y
CONFIG_INSTRUCTION_DECODER=y
CONFIG_OUTPUT_FORMAT="elf64-x86-64"
CONFIG_LOCKDEP_SUPPORT=y
CONFIG_STACKTRACE_SUPPORT=y
CONFIG_MMU=y
CONFIG_ARCH_MMAP_RND_BITS_MIN=28
CONFIG_ARCH_MMAP_RND_BITS_MAX=32
CONFIG_ARCH_MMAP_RND_COMPAT_BITS_MIN=8
CONFIG_ARCH_MMAP_RND_COMPAT_BITS_MAX=16
CONFIG_GENERIC_ISA_DMA=y
CONFIG_GENERIC_BUG=y
CONFIG_GENERIC_BUG_RELATIVE_POINTERS=y
CONFIG_ARCH_MAY_HAVE_PC_FDC=y
CONFIG_GENERIC_CALIBRATE_DELAY=y
CONFIG_ARCH_HAS_CPU_RELAX=y
CONFIG_ARCH_HAS_FILTER_PGPROT=y
CONFIG_HAVE_SETUP_PER_CPU_AREA=y
CONFIG_NEED_PER_CPU_EMBED_FIRST_CHUNK=y
CONFIG_NEED_PER_CPU_PAGE_FIRST_CHUNK=y
CONFIG_ARCH_HIBERNATION_POSSIBLE=y
CONFIG_ARCH_NR_GPIO=1024
CONFIG_ARCH_SUSPEND_POSSIBLE=y
CONFIG_ARCH_WANT_GENERAL_HUGETLB=y
CONFIG_AUDIT_ARCH=y
CONFIG_HAVE_INTEL_TXT=y
CONFIG_X86_64_SMP=y
CONFIG_ARCH_SUPPORTS_UPROBES=y
CONFIG_FIX_EARLYCON_MEM=y
CONFIG_PGTABLE_LEVELS=5
CONFIG_CC_HAS_SANE_STACKPROTECTOR=y
#
# Processor type and features
#
CONFIG_SMP=y
CONFIG_X86_FEATURE_NAMES=y
# CONFIG_X86_X2APIC is not set
CONFIG_X86_MPPARSE=y
# CONFIG_GOLDFISH is not set
CONFIG_RETPOLINE=y
# CONFIG_X86_CPU_RESCTRL is not set
CONFIG_X86_EXTENDED_PLATFORM=y
# CONFIG_X86_VSMP is not set
# CONFIG_X86_GOLDFISH is not set
# CONFIG_X86_INTEL_MID is not set
# CONFIG_X86_INTEL_LPSS is not set
# CONFIG_X86_AMD_PLATFORM_DEVICE is not set
CONFIG_IOSF_MBI=y
# CONFIG_IOSF_MBI_DEBUG is not set
CONFIG_X86_SUPPORTS_MEMORY_FAILURE=y
CONFIG_SCHED_OMIT_FRAME_POINTER=y
CONFIG_HYPERVISOR_GUEST=y
# CONFIG_PARAVIRT is not set
CONFIG_ARCH_CPUIDLE_HALTPOLL=y
# CONFIG_PVH is not set
# CONFIG_JAILHOUSE_GUEST is not set
# CONFIG_ACRN_GUEST is not set
# CONFIG_MK8 is not set
# CONFIG_MPSC is not set
# CONFIG_MCORE2 is not set
# CONFIG_MATOM is not set
CONFIG_GENERIC_CPU=y
CONFIG_X86_INTERNODE_CACHE_SHIFT=6
CONFIG_X86_L1_CACHE_SHIFT=6
CONFIG_X86_TSC=y
CONFIG_X86_CMPXCHG64=y
CONFIG_X86_CMOV=y
CONFIG_X86_MINIMUM_CPU_FAMILY=64
CONFIG_X86_DEBUGCTLMSR=y
CONFIG_IA32_FEAT_CTL=y
CONFIG_X86_VMX_FEATURE_NAMES=y
# CONFIG_PROCESSOR_SELECT is not set
CONFIG_CPU_SUP_INTEL=y
CONFIG_CPU_SUP_AMD=y
CONFIG_CPU_SUP_HYGON=y
CONFIG_CPU_SUP_CENTAUR=y
CONFIG_CPU_SUP_ZHAOXIN=y
CONFIG_HPET_TIMER=y
CONFIG_HPET_EMULATE_RTC=y
CONFIG_DMI=y
# CONFIG_GART_IOMMU is not set
# CONFIG_MAXSMP is not set
CONFIG_NR_CPUS_RANGE_BEGIN=2
CONFIG_NR_CPUS_RANGE_END=512
CONFIG_NR_CPUS_DEFAULT=64
CONFIG_NR_CPUS=64
CONFIG_SCHED_CLUSTER=y
CONFIG_SCHED_SMT=y
CONFIG_SCHED_MC=y
CONFIG_SCHED_MC_PRIO=y
CONFIG_X86_LOCAL_APIC=y
CONFIG_X86_IO_APIC=y
CONFIG_X86_REROUTE_FOR_BROKEN_BOOT_IRQS=y
CONFIG_X86_MCE=y
# CONFIG_X86_MCELOG_LEGACY is not set
CONFIG_X86_MCE_INTEL=y
CONFIG_X86_MCE_AMD=y
CONFIG_X86_MCE_THRESHOLD=y
# CONFIG_X86_MCE_INJECT is not set
#
# Performance monitoring
#
CONFIG_PERF_EVENTS_INTEL_UNCORE=y
CONFIG_PERF_EVENTS_INTEL_RAPL=y
CONFIG_PERF_EVENTS_INTEL_CSTATE=y
# CONFIG_PERF_EVENTS_AMD_POWER is not set
CONFIG_PERF_EVENTS_AMD_UNCORE=y
# end of Performance monitoring
CONFIG_X86_16BIT=y
CONFIG_X86_ESPFIX64=y
CONFIG_X86_VSYSCALL_EMULATION=y
CONFIG_X86_IOPL_IOPERM=y
# CONFIG_I8K is not set
CONFIG_MICROCODE=y
CONFIG_MICROCODE_INTEL=y
CONFIG_MICROCODE_AMD=y
# CONFIG_MICROCODE_OLD_INTERFACE is not set
CONFIG_X86_MSR=y
CONFIG_X86_CPUID=y
CONFIG_X86_5LEVEL=y
CONFIG_X86_DIRECT_GBPAGES=y
# CONFIG_X86_CPA_STATISTICS is not set
# CONFIG_AMD_MEM_ENCRYPT is not set
CONFIG_NUMA=y
CONFIG_AMD_NUMA=y
CONFIG_X86_64_ACPI_NUMA=y
# CONFIG_NUMA_EMU is not set
CONFIG_NODES_SHIFT=6
CONFIG_ARCH_SPARSEMEM_ENABLE=y
CONFIG_ARCH_SPARSEMEM_DEFAULT=y
CONFIG_ARCH_SELECT_MEMORY_MODEL=y
CONFIG_ARCH_PROC_KCORE_TEXT=y
CONFIG_ILLEGAL_POINTER_VALUE=0xdead000000000000
# CONFIG_X86_PMEM_LEGACY is not set
CONFIG_X86_CHECK_BIOS_CORRUPTION=y
CONFIG_X86_BOOTPARAM_MEMORY_CORRUPTION_CHECK=y
CONFIG_MTRR=y
# CONFIG_MTRR_SANITIZER is not set
CONFIG_X86_PAT=y
CONFIG_ARCH_USES_PG_UNCACHED=y
CONFIG_ARCH_RANDOM=y
CONFIG_X86_SMAP=y
CONFIG_X86_UMIP=y
CONFIG_X86_INTEL_MEMORY_PROTECTION_KEYS=y
CONFIG_X86_INTEL_TSX_MODE_OFF=y
# CONFIG_X86_INTEL_TSX_MODE_ON is not set
# CONFIG_X86_INTEL_TSX_MODE_AUTO is not set
# CONFIG_X86_SGX is not set
CONFIG_EFI=y
CONFIG_EFI_STUB=y
CONFIG_EFI_MIXED=y
# CONFIG_HZ_100 is not set
# CONFIG_HZ_250 is not set
# CONFIG_HZ_300 is not set
CONFIG_HZ_1000=y
CONFIG_HZ=1000
CONFIG_SCHED_HRTICK=y
CONFIG_KEXEC=y
# CONFIG_KEXEC_FILE is not set
CONFIG_CRASH_DUMP=y
# CONFIG_KEXEC_JUMP is not set
CONFIG_PHYSICAL_START=0x1000000
CONFIG_RELOCATABLE=y
CONFIG_RANDOMIZE_BASE=y
CONFIG_X86_NEED_RELOCS=y
CONFIG_PHYSICAL_ALIGN=0x200000
CONFIG_DYNAMIC_MEMORY_LAYOUT=y
CONFIG_RANDOMIZE_MEMORY=y
CONFIG_RANDOMIZE_MEMORY_PHYSICAL_PADDING=0x0
CONFIG_HOTPLUG_CPU=y
# CONFIG_BOOTPARAM_HOTPLUG_CPU0 is not set
# CONFIG_DEBUG_HOTPLUG_CPU0 is not set
# CONFIG_COMPAT_VDSO is not set
# CONFIG_LEGACY_VSYSCALL_EMULATE is not set
CONFIG_LEGACY_VSYSCALL_XONLY=y
# CONFIG_LEGACY_VSYSCALL_NONE is not set
# CONFIG_CMDLINE_BOOL is not set
CONFIG_MODIFY_LDT_SYSCALL=y
# CONFIG_STRICT_SIGALTSTACK_SIZE is not set
CONFIG_HAVE_LIVEPATCH=y
# end of Processor type and features
CONFIG_ARCH_HAS_ADD_PAGES=y
CONFIG_ARCH_MHP_MEMMAP_ON_MEMORY_ENABLE=y
CONFIG_USE_PERCPU_NUMA_NODE_ID=y
#
# Power management and ACPI options
#
CONFIG_ARCH_HIBERNATION_HEADER=y
CONFIG_SUSPEND=y
CONFIG_SUSPEND_FREEZER=y
# CONFIG_SUSPEND_SKIP_SYNC is not set
CONFIG_HIBERNATE_CALLBACKS=y
CONFIG_HIBERNATION=y
CONFIG_HIBERNATION_SNAPSHOT_DEV=y
CONFIG_PM_STD_PARTITION=""
CONFIG_PM_SLEEP=y
CONFIG_PM_SLEEP_SMP=y
# CONFIG_PM_AUTOSLEEP is not set
# CONFIG_PM_WAKELOCKS is not set
CONFIG_PM=y
CONFIG_PM_DEBUG=y
# CONFIG_PM_ADVANCED_DEBUG is not set
# CONFIG_PM_TEST_SUSPEND is not set
CONFIG_PM_SLEEP_DEBUG=y
CONFIG_PM_TRACE=y
CONFIG_PM_TRACE_RTC=y
CONFIG_PM_CLK=y
# CONFIG_WQ_POWER_EFFICIENT_DEFAULT is not set
# CONFIG_ENERGY_MODEL is not set
CONFIG_ARCH_SUPPORTS_ACPI=y
CONFIG_ACPI=y
CONFIG_ACPI_LEGACY_TABLES_LOOKUP=y
CONFIG_ARCH_MIGHT_HAVE_ACPI_PDC=y
CONFIG_ACPI_SYSTEM_POWER_STATES_SUPPORT=y
# CONFIG_ACPI_DEBUGGER is not set
CONFIG_ACPI_SPCR_TABLE=y
# CONFIG_ACPI_FPDT is not set
CONFIG_ACPI_LPIT=y
CONFIG_ACPI_SLEEP=y
CONFIG_ACPI_REV_OVERRIDE_POSSIBLE=y
# CONFIG_ACPI_EC_DEBUGFS is not set
CONFIG_ACPI_AC=y
CONFIG_ACPI_BATTERY=y
CONFIG_ACPI_BUTTON=y
CONFIG_ACPI_VIDEO=y
CONFIG_ACPI_FAN=y
# CONFIG_ACPI_TAD is not set
CONFIG_ACPI_DOCK=y
CONFIG_ACPI_CPU_FREQ_PSS=y
CONFIG_ACPI_PROCESSOR_CSTATE=y
CONFIG_ACPI_PROCESSOR_IDLE=y
CONFIG_ACPI_CPPC_LIB=y
CONFIG_ACPI_PROCESSOR=y
CONFIG_ACPI_HOTPLUG_CPU=y
# CONFIG_ACPI_PROCESSOR_AGGREGATOR is not set
CONFIG_ACPI_THERMAL=y
CONFIG_ARCH_HAS_ACPI_TABLE_UPGRADE=y
CONFIG_ACPI_TABLE_UPGRADE=y
# CONFIG_ACPI_DEBUG is not set
# CONFIG_ACPI_PCI_SLOT is not set
CONFIG_ACPI_CONTAINER=y
CONFIG_ACPI_HOTPLUG_IOAPIC=y
# CONFIG_ACPI_SBS is not set
# CONFIG_ACPI_HED is not set
# CONFIG_ACPI_CUSTOM_METHOD is not set
CONFIG_ACPI_BGRT=y
# CONFIG_ACPI_REDUCED_HARDWARE_ONLY is not set
# CONFIG_ACPI_NFIT is not set
CONFIG_ACPI_NUMA=y
# CONFIG_ACPI_HMAT is not set
CONFIG_HAVE_ACPI_APEI=y
CONFIG_HAVE_ACPI_APEI_NMI=y
# CONFIG_ACPI_APEI is not set
# CONFIG_ACPI_DPTF is not set
# CONFIG_ACPI_CONFIGFS is not set
# CONFIG_PMIC_OPREGION is not set
CONFIG_X86_PM_TIMER=y
CONFIG_ACPI_PRMT=y
#
# CPU Frequency scaling
#
CONFIG_CPU_FREQ=y
CONFIG_CPU_FREQ_GOV_ATTR_SET=y
CONFIG_CPU_FREQ_GOV_COMMON=y
# CONFIG_CPU_FREQ_STAT is not set
# CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE is not set
# CONFIG_CPU_FREQ_DEFAULT_GOV_POWERSAVE is not set
CONFIG_CPU_FREQ_DEFAULT_GOV_USERSPACE=y
# CONFIG_CPU_FREQ_DEFAULT_GOV_SCHEDUTIL is not set
CONFIG_CPU_FREQ_GOV_PERFORMANCE=y
# CONFIG_CPU_FREQ_GOV_POWERSAVE is not set
CONFIG_CPU_FREQ_GOV_USERSPACE=y
CONFIG_CPU_FREQ_GOV_ONDEMAND=y
# CONFIG_CPU_FREQ_GOV_CONSERVATIVE is not set
CONFIG_CPU_FREQ_GOV_SCHEDUTIL=y
#
# CPU frequency scaling drivers
#
CONFIG_X86_INTEL_PSTATE=y
# CONFIG_X86_PCC_CPUFREQ is not set
CONFIG_X86_ACPI_CPUFREQ=y
CONFIG_X86_ACPI_CPUFREQ_CPB=y
# CONFIG_X86_POWERNOW_K8 is not set
# CONFIG_X86_AMD_FREQ_SENSITIVITY is not set
# CONFIG_X86_SPEEDSTEP_CENTRINO is not set
# CONFIG_X86_P4_CLOCKMOD is not set
#
# shared options
#
# end of CPU Frequency scaling
#
# CPU Idle
#
CONFIG_CPU_IDLE=y
# CONFIG_CPU_IDLE_GOV_LADDER is not set
CONFIG_CPU_IDLE_GOV_MENU=y
# CONFIG_CPU_IDLE_GOV_TEO is not set
# end of CPU Idle
# CONFIG_INTEL_IDLE is not set
# end of Power management and ACPI options
#
# Bus options (PCI etc.)
#
CONFIG_PCI_DIRECT=y
CONFIG_PCI_MMCONFIG=y
CONFIG_MMCONF_FAM10H=y
# CONFIG_PCI_CNB20LE_QUIRK is not set
# CONFIG_ISA_BUS is not set
CONFIG_ISA_DMA_API=y
CONFIG_AMD_NB=y
# end of Bus options (PCI etc.)
#
# Binary Emulations
#
CONFIG_IA32_EMULATION=y
# CONFIG_X86_X32 is not set
CONFIG_COMPAT_32=y
CONFIG_COMPAT=y
CONFIG_COMPAT_FOR_U64_ALIGNMENT=y
CONFIG_SYSVIPC_COMPAT=y
# end of Binary Emulations
CONFIG_HAVE_KVM=y
CONFIG_VIRTUALIZATION=y
# CONFIG_KVM is not set
CONFIG_AS_AVX512=y
CONFIG_AS_SHA1_NI=y
CONFIG_AS_SHA256_NI=y
CONFIG_AS_TPAUSE=y
#
# General architecture-dependent options
#
CONFIG_CRASH_CORE=y
CONFIG_KEXEC_CORE=y
CONFIG_HOTPLUG_SMT=y
CONFIG_GENERIC_ENTRY=y
CONFIG_KPROBES=y
CONFIG_JUMP_LABEL=y
# CONFIG_STATIC_KEYS_SELFTEST is not set
# CONFIG_STATIC_CALL_SELFTEST is not set
CONFIG_OPTPROBES=y
CONFIG_UPROBES=y
CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS=y
CONFIG_ARCH_USE_BUILTIN_BSWAP=y
CONFIG_KRETPROBES=y
CONFIG_HAVE_IOREMAP_PROT=y
CONFIG_HAVE_KPROBES=y
CONFIG_HAVE_KRETPROBES=y
CONFIG_HAVE_OPTPROBES=y
CONFIG_HAVE_KPROBES_ON_FTRACE=y
CONFIG_ARCH_CORRECT_STACKTRACE_ON_KRETPROBE=y
CONFIG_HAVE_FUNCTION_ERROR_INJECTION=y
CONFIG_HAVE_NMI=y
CONFIG_TRACE_IRQFLAGS_SUPPORT=y
CONFIG_HAVE_ARCH_TRACEHOOK=y
CONFIG_HAVE_DMA_CONTIGUOUS=y
CONFIG_GENERIC_SMP_IDLE_THREAD=y
CONFIG_ARCH_HAS_FORTIFY_SOURCE=y
CONFIG_ARCH_HAS_SET_MEMORY=y
CONFIG_ARCH_HAS_SET_DIRECT_MAP=y
CONFIG_HAVE_ARCH_THREAD_STRUCT_WHITELIST=y
CONFIG_ARCH_WANTS_DYNAMIC_TASK_STRUCT=y
CONFIG_ARCH_WANTS_NO_INSTR=y
CONFIG_HAVE_ASM_MODVERSIONS=y
CONFIG_HAVE_REGS_AND_STACK_ACCESS_API=y
CONFIG_HAVE_RSEQ=y
CONFIG_HAVE_FUNCTION_ARG_ACCESS_API=y
CONFIG_HAVE_HW_BREAKPOINT=y
CONFIG_HAVE_MIXED_BREAKPOINTS_REGS=y
CONFIG_HAVE_USER_RETURN_NOTIFIER=y
CONFIG_HAVE_PERF_EVENTS_NMI=y
CONFIG_HAVE_HARDLOCKUP_DETECTOR_PERF=y
CONFIG_HAVE_PERF_REGS=y
CONFIG_HAVE_PERF_USER_STACK_DUMP=y
CONFIG_HAVE_ARCH_JUMP_LABEL=y
CONFIG_HAVE_ARCH_JUMP_LABEL_RELATIVE=y
CONFIG_ARCH_HAVE_NMI_SAFE_CMPXCHG=y
CONFIG_HAVE_ALIGNED_STRUCT_PAGE=y
CONFIG_HAVE_CMPXCHG_LOCAL=y
CONFIG_HAVE_CMPXCHG_DOUBLE=y
CONFIG_ARCH_WANT_COMPAT_IPC_PARSE_VERSION=y
CONFIG_ARCH_WANT_OLD_COMPAT_IPC=y
CONFIG_HAVE_ARCH_SECCOMP=y
CONFIG_HAVE_ARCH_SECCOMP_FILTER=y
CONFIG_SECCOMP=y
CONFIG_SECCOMP_FILTER=y
# CONFIG_SECCOMP_CACHE_DEBUG is not set
CONFIG_HAVE_ARCH_STACKLEAK=y
CONFIG_HAVE_STACKPROTECTOR=y
CONFIG_STACKPROTECTOR=y
CONFIG_STACKPROTECTOR_STRONG=y
CONFIG_ARCH_SUPPORTS_LTO_CLANG=y
CONFIG_ARCH_SUPPORTS_LTO_CLANG_THIN=y
CONFIG_LTO_NONE=y
CONFIG_HAVE_ARCH_WITHIN_STACK_FRAMES=y
CONFIG_HAVE_CONTEXT_TRACKING=y
CONFIG_HAVE_CONTEXT_TRACKING_OFFSTACK=y
CONFIG_HAVE_VIRT_CPU_ACCOUNTING_GEN=y
CONFIG_HAVE_IRQ_TIME_ACCOUNTING=y
CONFIG_HAVE_MOVE_PUD=y
CONFIG_HAVE_MOVE_PMD=y
CONFIG_HAVE_ARCH_TRANSPARENT_HUGEPAGE=y
CONFIG_HAVE_ARCH_TRANSPARENT_HUGEPAGE_PUD=y
CONFIG_HAVE_ARCH_HUGE_VMAP=y
CONFIG_ARCH_WANT_HUGE_PMD_SHARE=y
CONFIG_HAVE_ARCH_SOFT_DIRTY=y
CONFIG_HAVE_MOD_ARCH_SPECIFIC=y
CONFIG_MODULES_USE_ELF_RELA=y
CONFIG_HAVE_IRQ_EXIT_ON_IRQ_STACK=y
CONFIG_HAVE_SOFTIRQ_ON_OWN_STACK=y
CONFIG_ARCH_HAS_ELF_RANDOMIZE=y
CONFIG_HAVE_ARCH_MMAP_RND_BITS=y
CONFIG_HAVE_EXIT_THREAD=y
CONFIG_ARCH_MMAP_RND_BITS=28
CONFIG_HAVE_ARCH_MMAP_RND_COMPAT_BITS=y
CONFIG_ARCH_MMAP_RND_COMPAT_BITS=8
CONFIG_HAVE_ARCH_COMPAT_MMAP_BASES=y
CONFIG_PAGE_SIZE_LESS_THAN_64KB=y
CONFIG_HAVE_STACK_VALIDATION=y
CONFIG_HAVE_RELIABLE_STACKTRACE=y
CONFIG_OLD_SIGSUSPEND3=y
CONFIG_COMPAT_OLD_SIGACTION=y
CONFIG_COMPAT_32BIT_TIME=y
CONFIG_HAVE_ARCH_VMAP_STACK=y
CONFIG_VMAP_STACK=y
CONFIG_HAVE_ARCH_RANDOMIZE_KSTACK_OFFSET=y
# CONFIG_RANDOMIZE_KSTACK_OFFSET_DEFAULT is not set
CONFIG_ARCH_HAS_STRICT_KERNEL_RWX=y
CONFIG_STRICT_KERNEL_RWX=y
CONFIG_ARCH_HAS_STRICT_MODULE_RWX=y
CONFIG_STRICT_MODULE_RWX=y
CONFIG_HAVE_ARCH_PREL32_RELOCATIONS=y
CONFIG_ARCH_USE_MEMREMAP_PROT=y
# CONFIG_LOCK_EVENT_COUNTS is not set
CONFIG_ARCH_HAS_MEM_ENCRYPT=y
CONFIG_HAVE_STATIC_CALL=y
CONFIG_HAVE_STATIC_CALL_INLINE=y
CONFIG_HAVE_PREEMPT_DYNAMIC=y
CONFIG_ARCH_WANT_LD_ORPHAN_WARN=y
CONFIG_ARCH_SUPPORTS_DEBUG_PAGEALLOC=y
CONFIG_ARCH_HAS_ELFCORE_COMPAT=y
CONFIG_ARCH_HAS_PARANOID_L1D_FLUSH=y
CONFIG_DYNAMIC_SIGFRAME=y
#
# GCOV-based kernel profiling
#
# CONFIG_GCOV_KERNEL is not set
CONFIG_ARCH_HAS_GCOV_PROFILE_ALL=y
# end of GCOV-based kernel profiling
CONFIG_HAVE_GCC_PLUGINS=y
# end of General architecture-dependent options
CONFIG_RT_MUTEXES=y
CONFIG_BASE_SMALL=0
CONFIG_MODULES=y
# CONFIG_MODULE_FORCE_LOAD is not set
CONFIG_MODULE_UNLOAD=y
CONFIG_MODULE_FORCE_UNLOAD=y
# CONFIG_MODVERSIONS is not set
# CONFIG_MODULE_SRCVERSION_ALL is not set
# CONFIG_MODULE_SIG is not set
CONFIG_MODULE_COMPRESS_NONE=y
# CONFIG_MODULE_COMPRESS_GZIP is not set
# CONFIG_MODULE_COMPRESS_XZ is not set
# CONFIG_MODULE_COMPRESS_ZSTD is not set
# CONFIG_MODULE_ALLOW_MISSING_NAMESPACE_IMPORTS is not set
CONFIG_MODPROBE_PATH="/sbin/modprobe"
# CONFIG_TRIM_UNUSED_KSYMS is not set
CONFIG_MODULES_TREE_LOOKUP=y
CONFIG_BLOCK=y
CONFIG_BLK_DEV_BSG_COMMON=y
# CONFIG_BLK_DEV_BSGLIB is not set
# CONFIG_BLK_DEV_INTEGRITY is not set
# CONFIG_BLK_DEV_ZONED is not set
# CONFIG_BLK_WBT is not set
CONFIG_BLK_DEBUG_FS=y
# CONFIG_BLK_SED_OPAL is not set
# CONFIG_BLK_INLINE_ENCRYPTION is not set
#
# Partition Types
#
# CONFIG_PARTITION_ADVANCED is not set
CONFIG_MSDOS_PARTITION=y
CONFIG_EFI_PARTITION=y
# end of Partition Types
CONFIG_BLOCK_COMPAT=y
CONFIG_BLK_MQ_PCI=y
CONFIG_BLK_MQ_VIRTIO=y
CONFIG_BLK_PM=y
CONFIG_BLOCK_HOLDER_DEPRECATED=y
#
# IO Schedulers
#
CONFIG_MQ_IOSCHED_DEADLINE=y
CONFIG_MQ_IOSCHED_KYBER=y
# CONFIG_IOSCHED_BFQ is not set
# end of IO Schedulers
CONFIG_ASN1=y
CONFIG_UNINLINE_SPIN_UNLOCK=y
CONFIG_ARCH_SUPPORTS_ATOMIC_RMW=y
CONFIG_MUTEX_SPIN_ON_OWNER=y
CONFIG_RWSEM_SPIN_ON_OWNER=y
CONFIG_LOCK_SPIN_ON_OWNER=y
CONFIG_ARCH_USE_QUEUED_SPINLOCKS=y
CONFIG_QUEUED_SPINLOCKS=y
CONFIG_ARCH_USE_QUEUED_RWLOCKS=y
CONFIG_QUEUED_RWLOCKS=y
CONFIG_ARCH_HAS_NON_OVERLAPPING_ADDRESS_SPACE=y
CONFIG_ARCH_HAS_SYNC_CORE_BEFORE_USERMODE=y
CONFIG_ARCH_HAS_SYSCALL_WRAPPER=y
CONFIG_FREEZER=y
#
# Executable file formats
#
CONFIG_BINFMT_ELF=y
CONFIG_COMPAT_BINFMT_ELF=y
CONFIG_ELFCORE=y
CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS=y
CONFIG_BINFMT_SCRIPT=y
CONFIG_BINFMT_MISC=y
CONFIG_COREDUMP=y
# end of Executable file formats
#
# Memory Management options
#
CONFIG_SELECT_MEMORY_MODEL=y
CONFIG_SPARSEMEM_MANUAL=y
CONFIG_SPARSEMEM=y
CONFIG_SPARSEMEM_EXTREME=y
CONFIG_SPARSEMEM_VMEMMAP_ENABLE=y
CONFIG_SPARSEMEM_VMEMMAP=y
CONFIG_HAVE_FAST_GUP=y
CONFIG_EXCLUSIVE_SYSTEM_RAM=y
CONFIG_ARCH_ENABLE_MEMORY_HOTPLUG=y
# CONFIG_MEMORY_HOTPLUG is not set
CONFIG_SPLIT_PTLOCK_CPUS=4
CONFIG_ARCH_ENABLE_SPLIT_PMD_PTLOCK=y
CONFIG_COMPACTION=y
# CONFIG_PAGE_REPORTING is not set
CONFIG_MIGRATION=y
CONFIG_ARCH_ENABLE_HUGEPAGE_MIGRATION=y
CONFIG_PHYS_ADDR_T_64BIT=y
CONFIG_VIRT_TO_BUS=y
CONFIG_MMU_NOTIFIER=y
# CONFIG_KSM is not set
CONFIG_DEFAULT_MMAP_MIN_ADDR=4096
CONFIG_ARCH_SUPPORTS_MEMORY_FAILURE=y
# CONFIG_MEMORY_FAILURE is not set
# CONFIG_TRANSPARENT_HUGEPAGE is not set
CONFIG_ARCH_WANTS_THP_SWAP=y
# CONFIG_CLEANCACHE is not set
# CONFIG_FRONTSWAP is not set
# CONFIG_CMA is not set
# CONFIG_ZPOOL is not set
# CONFIG_ZSMALLOC is not set
CONFIG_GENERIC_EARLY_IOREMAP=y
# CONFIG_DEFERRED_STRUCT_PAGE_INIT is not set
# CONFIG_IDLE_PAGE_TRACKING is not set
CONFIG_ARCH_HAS_CACHE_LINE_SIZE=y
CONFIG_ARCH_HAS_PTE_DEVMAP=y
CONFIG_ARCH_HAS_ZONE_DMA_SET=y
CONFIG_ZONE_DMA=y
CONFIG_ZONE_DMA32=y
CONFIG_VMAP_PFN=y
CONFIG_ARCH_USES_HIGH_VMA_FLAGS=y
CONFIG_ARCH_HAS_PKEYS=y
# CONFIG_PERCPU_STATS is not set
# CONFIG_GUP_TEST is not set
CONFIG_ARCH_HAS_PTE_SPECIAL=y
CONFIG_SECRETMEM=y
#
# Data Access Monitoring
#
# CONFIG_DAMON is not set
# end of Data Access Monitoring
# end of Memory Management options
CONFIG_NET=y
CONFIG_NET_INGRESS=y
CONFIG_NET_EGRESS=y
CONFIG_SKB_EXTENSIONS=y
#
# Networking options
#
CONFIG_PACKET=y
# CONFIG_PACKET_DIAG is not set
CONFIG_UNIX=y
CONFIG_UNIX_SCM=y
CONFIG_AF_UNIX_OOB=y
# CONFIG_UNIX_DIAG is not set
# CONFIG_TLS is not set
CONFIG_XFRM=y
CONFIG_XFRM_ALGO=y
CONFIG_XFRM_USER=y
# CONFIG_XFRM_USER_COMPAT is not set
# CONFIG_XFRM_INTERFACE is not set
# CONFIG_XFRM_SUB_POLICY is not set
# CONFIG_XFRM_MIGRATE is not set
# CONFIG_XFRM_STATISTICS is not set
CONFIG_XFRM_AH=y
CONFIG_XFRM_ESP=y
# CONFIG_NET_KEY is not set
CONFIG_INET=y
CONFIG_IP_MULTICAST=y
CONFIG_IP_ADVANCED_ROUTER=y
# CONFIG_IP_FIB_TRIE_STATS is not set
CONFIG_IP_MULTIPLE_TABLES=y
CONFIG_IP_ROUTE_MULTIPATH=y
CONFIG_IP_ROUTE_VERBOSE=y
CONFIG_IP_PNP=y
CONFIG_IP_PNP_DHCP=y
CONFIG_IP_PNP_BOOTP=y
CONFIG_IP_PNP_RARP=y
# CONFIG_NET_IPIP is not set
# CONFIG_NET_IPGRE_DEMUX is not set
CONFIG_NET_IP_TUNNEL=y
CONFIG_IP_MROUTE_COMMON=y
CONFIG_IP_MROUTE=y
# CONFIG_IP_MROUTE_MULTIPLE_TABLES is not set
CONFIG_IP_PIMSM_V1=y
CONFIG_IP_PIMSM_V2=y
CONFIG_SYN_COOKIES=y
# CONFIG_NET_IPVTI is not set
# CONFIG_NET_FOU is not set
# CONFIG_NET_FOU_IP_TUNNELS is not set
# CONFIG_INET_AH is not set
# CONFIG_INET_ESP is not set
# CONFIG_INET_IPCOMP is not set
CONFIG_INET_TUNNEL=y
# CONFIG_INET_DIAG is not set
CONFIG_TCP_CONG_ADVANCED=y
# CONFIG_TCP_CONG_BIC is not set
CONFIG_TCP_CONG_CUBIC=y
# CONFIG_TCP_CONG_WESTWOOD is not set
# CONFIG_TCP_CONG_HTCP is not set
# CONFIG_TCP_CONG_HSTCP is not set
# CONFIG_TCP_CONG_HYBLA is not set
# CONFIG_TCP_CONG_VEGAS is not set
# CONFIG_TCP_CONG_NV is not set
# CONFIG_TCP_CONG_SCALABLE is not set
# CONFIG_TCP_CONG_LP is not set
# CONFIG_TCP_CONG_VENO is not set
# CONFIG_TCP_CONG_YEAH is not set
# CONFIG_TCP_CONG_ILLINOIS is not set
# CONFIG_TCP_CONG_DCTCP is not set
# CONFIG_TCP_CONG_CDG is not set
# CONFIG_TCP_CONG_BBR is not set
CONFIG_DEFAULT_CUBIC=y
# CONFIG_DEFAULT_RENO is not set
CONFIG_DEFAULT_TCP_CONG="cubic"
CONFIG_TCP_MD5SIG=y
CONFIG_IPV6=y
# CONFIG_IPV6_ROUTER_PREF is not set
# CONFIG_IPV6_OPTIMISTIC_DAD is not set
CONFIG_INET6_AH=y
CONFIG_INET6_ESP=y
# CONFIG_INET6_ESP_OFFLOAD is not set
# CONFIG_INET6_ESPINTCP is not set
# CONFIG_INET6_IPCOMP is not set
# CONFIG_IPV6_MIP6 is not set
# CONFIG_IPV6_ILA is not set
# CONFIG_IPV6_VTI is not set
CONFIG_IPV6_SIT=y
# CONFIG_IPV6_SIT_6RD is not set
CONFIG_IPV6_NDISC_NODETYPE=y
# CONFIG_IPV6_TUNNEL is not set
# CONFIG_IPV6_MULTIPLE_TABLES is not set
# CONFIG_IPV6_MROUTE is not set
# CONFIG_IPV6_SEG6_LWTUNNEL is not set
# CONFIG_IPV6_SEG6_HMAC is not set
# CONFIG_IPV6_RPL_LWTUNNEL is not set
# CONFIG_IPV6_IOAM6_LWTUNNEL is not set
CONFIG_NETLABEL=y
# CONFIG_MPTCP is not set
CONFIG_NETWORK_SECMARK=y
CONFIG_NET_PTP_CLASSIFY=y
# CONFIG_NETWORK_PHY_TIMESTAMPING is not set
CONFIG_NETFILTER=y
# CONFIG_NETFILTER_ADVANCED is not set
#
# Core Netfilter Configuration
#
CONFIG_NETFILTER_INGRESS=y
CONFIG_NETFILTER_EGRESS=y
CONFIG_NETFILTER_SKIP_EGRESS=y
CONFIG_NETFILTER_NETLINK=y
CONFIG_NETFILTER_NETLINK_LOG=y
CONFIG_NF_CONNTRACK=y
CONFIG_NF_LOG_SYSLOG=m
CONFIG_NF_CONNTRACK_SECMARK=y
CONFIG_NF_CONNTRACK_PROCFS=y
# CONFIG_NF_CONNTRACK_LABELS is not set
CONFIG_NF_CONNTRACK_FTP=y
CONFIG_NF_CONNTRACK_IRC=y
# CONFIG_NF_CONNTRACK_NETBIOS_NS is not set
CONFIG_NF_CONNTRACK_SIP=y
CONFIG_NF_CT_NETLINK=y
# CONFIG_NETFILTER_NETLINK_GLUE_CT is not set
CONFIG_NF_NAT=y
CONFIG_NF_NAT_FTP=y
CONFIG_NF_NAT_IRC=y
CONFIG_NF_NAT_SIP=y
CONFIG_NF_NAT_MASQUERADE=y
# CONFIG_NF_TABLES is not set
CONFIG_NETFILTER_XTABLES=y
CONFIG_NETFILTER_XTABLES_COMPAT=y
#
# Xtables combined modules
#
CONFIG_NETFILTER_XT_MARK=m
#
# Xtables targets
#
CONFIG_NETFILTER_XT_TARGET_CONNSECMARK=y
CONFIG_NETFILTER_XT_TARGET_LOG=m
CONFIG_NETFILTER_XT_NAT=m
# CONFIG_NETFILTER_XT_TARGET_NETMAP is not set
CONFIG_NETFILTER_XT_TARGET_NFLOG=y
# CONFIG_NETFILTER_XT_TARGET_REDIRECT is not set
CONFIG_NETFILTER_XT_TARGET_MASQUERADE=m
CONFIG_NETFILTER_XT_TARGET_SECMARK=y
CONFIG_NETFILTER_XT_TARGET_TCPMSS=y
#
# Xtables matches
#
CONFIG_NETFILTER_XT_MATCH_ADDRTYPE=m
CONFIG_NETFILTER_XT_MATCH_CONNTRACK=y
CONFIG_NETFILTER_XT_MATCH_POLICY=y
CONFIG_NETFILTER_XT_MATCH_STATE=y
# end of Core Netfilter Configuration
# CONFIG_IP_SET is not set
# CONFIG_IP_VS is not set
#
# IP: Netfilter Configuration
#
CONFIG_NF_DEFRAG_IPV4=y
# CONFIG_NF_SOCKET_IPV4 is not set
# CONFIG_NF_TPROXY_IPV4 is not set
# CONFIG_NF_DUP_IPV4 is not set
CONFIG_NF_LOG_ARP=m
CONFIG_NF_LOG_IPV4=m
CONFIG_NF_REJECT_IPV4=y
CONFIG_IP_NF_IPTABLES=y
CONFIG_IP_NF_FILTER=y
CONFIG_IP_NF_TARGET_REJECT=y
CONFIG_IP_NF_NAT=m
CONFIG_IP_NF_TARGET_MASQUERADE=m
CONFIG_IP_NF_MANGLE=y
# CONFIG_IP_NF_RAW is not set
# end of IP: Netfilter Configuration
#
# IPv6: Netfilter Configuration
#
# CONFIG_NF_SOCKET_IPV6 is not set
# CONFIG_NF_TPROXY_IPV6 is not set
# CONFIG_NF_DUP_IPV6 is not set
CONFIG_NF_REJECT_IPV6=y
CONFIG_NF_LOG_IPV6=m
CONFIG_IP6_NF_IPTABLES=y
CONFIG_IP6_NF_MATCH_IPV6HEADER=y
CONFIG_IP6_NF_FILTER=y
CONFIG_IP6_NF_TARGET_REJECT=y
CONFIG_IP6_NF_MANGLE=y
# CONFIG_IP6_NF_RAW is not set
# end of IPv6: Netfilter Configuration
CONFIG_NF_DEFRAG_IPV6=y
# CONFIG_NF_CONNTRACK_BRIDGE is not set
# CONFIG_BPFILTER is not set
# CONFIG_IP_DCCP is not set
# CONFIG_IP_SCTP is not set
# CONFIG_RDS is not set
# CONFIG_TIPC is not set
# CONFIG_ATM is not set
# CONFIG_L2TP is not set
# CONFIG_BRIDGE is not set
# CONFIG_NET_DSA is not set
# CONFIG_VLAN_8021Q is not set
# CONFIG_DECNET is not set
# CONFIG_LLC2 is not set
# CONFIG_ATALK is not set
# CONFIG_X25 is not set
# CONFIG_LAPB is not set
# CONFIG_PHONET is not set
# CONFIG_6LOWPAN is not set
# CONFIG_IEEE802154 is not set
CONFIG_NET_SCHED=y
#
# Queueing/Scheduling
#
# CONFIG_NET_SCH_CBQ is not set
# CONFIG_NET_SCH_HTB is not set
# CONFIG_NET_SCH_HFSC is not set
# CONFIG_NET_SCH_PRIO is not set
# CONFIG_NET_SCH_MULTIQ is not set
# CONFIG_NET_SCH_RED is not set
# CONFIG_NET_SCH_SFB is not set
# CONFIG_NET_SCH_SFQ is not set
# CONFIG_NET_SCH_TEQL is not set
# CONFIG_NET_SCH_TBF is not set
# CONFIG_NET_SCH_CBS is not set
# CONFIG_NET_SCH_ETF is not set
# CONFIG_NET_SCH_TAPRIO is not set
# CONFIG_NET_SCH_GRED is not set
# CONFIG_NET_SCH_DSMARK is not set
# CONFIG_NET_SCH_NETEM is not set
# CONFIG_NET_SCH_DRR is not set
# CONFIG_NET_SCH_MQPRIO is not set
# CONFIG_NET_SCH_SKBPRIO is not set
# CONFIG_NET_SCH_CHOKE is not set
# CONFIG_NET_SCH_QFQ is not set
# CONFIG_NET_SCH_CODEL is not set
# CONFIG_NET_SCH_FQ_CODEL is not set
# CONFIG_NET_SCH_CAKE is not set
# CONFIG_NET_SCH_FQ is not set
# CONFIG_NET_SCH_HHF is not set
# CONFIG_NET_SCH_PIE is not set
# CONFIG_NET_SCH_INGRESS is not set
# CONFIG_NET_SCH_PLUG is not set
# CONFIG_NET_SCH_ETS is not set
# CONFIG_NET_SCH_DEFAULT is not set
#
# Classification
#
CONFIG_NET_CLS=y
# CONFIG_NET_CLS_BASIC is not set
# CONFIG_NET_CLS_TCINDEX is not set
# CONFIG_NET_CLS_ROUTE4 is not set
# CONFIG_NET_CLS_FW is not set
# CONFIG_NET_CLS_U32 is not set
# CONFIG_NET_CLS_RSVP is not set
# CONFIG_NET_CLS_RSVP6 is not set
# CONFIG_NET_CLS_FLOW is not set
# CONFIG_NET_CLS_CGROUP is not set
# CONFIG_NET_CLS_BPF is not set
# CONFIG_NET_CLS_FLOWER is not set
# CONFIG_NET_CLS_MATCHALL is not set
CONFIG_NET_EMATCH=y
CONFIG_NET_EMATCH_STACK=32
# CONFIG_NET_EMATCH_CMP is not set
# CONFIG_NET_EMATCH_NBYTE is not set
# CONFIG_NET_EMATCH_U32 is not set
# CONFIG_NET_EMATCH_META is not set
# CONFIG_NET_EMATCH_TEXT is not set
# CONFIG_NET_EMATCH_IPT is not set
CONFIG_NET_CLS_ACT=y
# CONFIG_NET_ACT_POLICE is not set
# CONFIG_NET_ACT_GACT is not set
# CONFIG_NET_ACT_MIRRED is not set
# CONFIG_NET_ACT_SAMPLE is not set
# CONFIG_NET_ACT_IPT is not set
# CONFIG_NET_ACT_NAT is not set
# CONFIG_NET_ACT_PEDIT is not set
# CONFIG_NET_ACT_SIMP is not set
# CONFIG_NET_ACT_SKBEDIT is not set
# CONFIG_NET_ACT_CSUM is not set
# CONFIG_NET_ACT_MPLS is not set
# CONFIG_NET_ACT_VLAN is not set
# CONFIG_NET_ACT_BPF is not set
# CONFIG_NET_ACT_SKBMOD is not set
# CONFIG_NET_ACT_IFE is not set
# CONFIG_NET_ACT_TUNNEL_KEY is not set
# CONFIG_NET_ACT_GATE is not set
# CONFIG_NET_TC_SKB_EXT is not set
CONFIG_NET_SCH_FIFO=y
# CONFIG_DCB is not set
CONFIG_DNS_RESOLVER=y
# CONFIG_BATMAN_ADV is not set
# CONFIG_OPENVSWITCH is not set
# CONFIG_VSOCKETS is not set
# CONFIG_NETLINK_DIAG is not set
# CONFIG_MPLS is not set
# CONFIG_NET_NSH is not set
# CONFIG_HSR is not set
# CONFIG_NET_SWITCHDEV is not set
# CONFIG_NET_L3_MASTER_DEV is not set
# CONFIG_QRTR is not set
# CONFIG_NET_NCSI is not set
CONFIG_PCPU_DEV_REFCNT=y
CONFIG_RPS=y
CONFIG_RFS_ACCEL=y
CONFIG_SOCK_RX_QUEUE_MAPPING=y
CONFIG_XPS=y
# CONFIG_CGROUP_NET_PRIO is not set
# CONFIG_CGROUP_NET_CLASSID is not set
CONFIG_NET_RX_BUSY_POLL=y
CONFIG_BQL=y
CONFIG_NET_FLOW_LIMIT=y
#
# Network testing
#
# CONFIG_NET_PKTGEN is not set
# CONFIG_NET_DROP_MONITOR is not set
# end of Network testing
# end of Networking options
# CONFIG_HAMRADIO is not set
# CONFIG_CAN is not set
# CONFIG_BT is not set
# CONFIG_AF_RXRPC is not set
# CONFIG_AF_KCM is not set
# CONFIG_MCTP is not set
CONFIG_FIB_RULES=y
CONFIG_WIRELESS=y
CONFIG_CFG80211=y
# CONFIG_NL80211_TESTMODE is not set
# CONFIG_CFG80211_DEVELOPER_WARNINGS is not set
# CONFIG_CFG80211_CERTIFICATION_ONUS is not set
CONFIG_CFG80211_REQUIRE_SIGNED_REGDB=y
CONFIG_CFG80211_USE_KERNEL_REGDB_KEYS=y
CONFIG_CFG80211_DEFAULT_PS=y
# CONFIG_CFG80211_DEBUGFS is not set
CONFIG_CFG80211_CRDA_SUPPORT=y
# CONFIG_CFG80211_WEXT is not set
CONFIG_MAC80211=y
CONFIG_MAC80211_HAS_RC=y
CONFIG_MAC80211_RC_MINSTREL=y
CONFIG_MAC80211_RC_DEFAULT_MINSTREL=y
CONFIG_MAC80211_RC_DEFAULT="minstrel_ht"
# CONFIG_MAC80211_MESH is not set
CONFIG_MAC80211_LEDS=y
# CONFIG_MAC80211_DEBUGFS is not set
# CONFIG_MAC80211_MESSAGE_TRACING is not set
# CONFIG_MAC80211_DEBUG_MENU is not set
CONFIG_MAC80211_STA_HASH_MAX_SIZE=0
CONFIG_RFKILL=y
CONFIG_RFKILL_LEDS=y
CONFIG_RFKILL_INPUT=y
CONFIG_NET_9P=y
CONFIG_NET_9P_VIRTIO=y
# CONFIG_NET_9P_DEBUG is not set
# CONFIG_CAIF is not set
# CONFIG_CEPH_LIB is not set
# CONFIG_NFC is not set
# CONFIG_PSAMPLE is not set
# CONFIG_NET_IFE is not set
# CONFIG_LWTUNNEL is not set
CONFIG_DST_CACHE=y
CONFIG_GRO_CELLS=y
CONFIG_NET_SELFTESTS=y
CONFIG_FAILOVER=y
CONFIG_ETHTOOL_NETLINK=y
#
# Device Drivers
#
CONFIG_HAVE_EISA=y
# CONFIG_EISA is not set
CONFIG_HAVE_PCI=y
CONFIG_PCI=y
CONFIG_PCI_DOMAINS=y
CONFIG_PCIEPORTBUS=y
# CONFIG_HOTPLUG_PCI_PCIE is not set
# CONFIG_PCIEAER is not set
CONFIG_PCIEASPM=y
CONFIG_PCIEASPM_DEFAULT=y
# CONFIG_PCIEASPM_POWERSAVE is not set
# CONFIG_PCIEASPM_POWER_SUPERSAVE is not set
# CONFIG_PCIEASPM_PERFORMANCE is not set
CONFIG_PCIE_PME=y
# CONFIG_PCIE_PTM is not set
CONFIG_PCI_MSI=y
CONFIG_PCI_MSI_IRQ_DOMAIN=y
CONFIG_PCI_QUIRKS=y
# CONFIG_PCI_DEBUG is not set
# CONFIG_PCI_STUB is not set
CONFIG_PCI_ATS=y
CONFIG_PCI_LOCKLESS_CONFIG=y
# CONFIG_PCI_IOV is not set
CONFIG_PCI_PRI=y
CONFIG_PCI_PASID=y
CONFIG_PCI_LABEL=y
# CONFIG_PCIE_BUS_TUNE_OFF is not set
CONFIG_PCIE_BUS_DEFAULT=y
# CONFIG_PCIE_BUS_SAFE is not set
# CONFIG_PCIE_BUS_PERFORMANCE is not set
# CONFIG_PCIE_BUS_PEER2PEER is not set
CONFIG_HOTPLUG_PCI=y
# CONFIG_HOTPLUG_PCI_ACPI is not set
# CONFIG_HOTPLUG_PCI_CPCI is not set
# CONFIG_HOTPLUG_PCI_SHPC is not set
#
# PCI controller drivers
#
# CONFIG_VMD is not set
#
# DesignWare PCI Core Support
#
# CONFIG_PCIE_DW_PLAT_HOST is not set
# CONFIG_PCI_MESON is not set
# end of DesignWare PCI Core Support
#
# Mobiveil PCIe Core Support
#
# end of Mobiveil PCIe Core Support
#
# Cadence PCIe controllers support
#
# end of Cadence PCIe controllers support
# end of PCI controller drivers
#
# PCI Endpoint
#
# CONFIG_PCI_ENDPOINT is not set
# end of PCI Endpoint
#
# PCI switch controller drivers
#
# CONFIG_PCI_SW_SWITCHTEC is not set
# end of PCI switch controller drivers
# CONFIG_CXL_BUS is not set
CONFIG_PCCARD=y
CONFIG_PCMCIA=y
CONFIG_PCMCIA_LOAD_CIS=y
CONFIG_CARDBUS=y
#
# PC-card bridges
#
CONFIG_YENTA=y
CONFIG_YENTA_O2=y
CONFIG_YENTA_RICOH=y
CONFIG_YENTA_TI=y
CONFIG_YENTA_ENE_TUNE=y
CONFIG_YENTA_TOSHIBA=y
# CONFIG_PD6729 is not set
# CONFIG_I82092 is not set
CONFIG_PCCARD_NONSTATIC=y
# CONFIG_RAPIDIO is not set
#
# Generic Driver Options
#
# CONFIG_UEVENT_HELPER is not set
CONFIG_DEVTMPFS=y
CONFIG_DEVTMPFS_MOUNT=y
CONFIG_STANDALONE=y
CONFIG_PREVENT_FIRMWARE_BUILD=y
#
# Firmware loader
#
CONFIG_FW_LOADER=y
CONFIG_EXTRA_FIRMWARE=""
# CONFIG_FW_LOADER_USER_HELPER is not set
# CONFIG_FW_LOADER_COMPRESS is not set
CONFIG_FW_CACHE=y
# end of Firmware loader
CONFIG_ALLOW_DEV_COREDUMP=y
# CONFIG_DEBUG_DRIVER is not set
CONFIG_DEBUG_DEVRES=y
# CONFIG_DEBUG_TEST_DRIVER_REMOVE is not set
# CONFIG_PM_QOS_KUNIT_TEST is not set
CONFIG_TEST_ASYNC_DRIVER_PROBE=m
# CONFIG_DRIVER_PE_KUNIT_TEST is not set
CONFIG_GENERIC_CPU_AUTOPROBE=y
CONFIG_GENERIC_CPU_VULNERABILITIES=y
CONFIG_REGMAP=y
CONFIG_DMA_SHARED_BUFFER=y
# CONFIG_DMA_FENCE_TRACE is not set
# end of Generic Driver Options
#
# Bus devices
#
# CONFIG_MHI_BUS is not set
# end of Bus devices
CONFIG_CONNECTOR=y
CONFIG_PROC_EVENTS=y
#
# Firmware Drivers
#
#
# ARM System Control and Management Interface Protocol
#
# end of ARM System Control and Management Interface Protocol
# CONFIG_EDD is not set
CONFIG_FIRMWARE_MEMMAP=y
CONFIG_DMIID=y
# CONFIG_DMI_SYSFS is not set
CONFIG_DMI_SCAN_MACHINE_NON_EFI_FALLBACK=y
# CONFIG_ISCSI_IBFT is not set
# CONFIG_FW_CFG_SYSFS is not set
CONFIG_SYSFB=y
# CONFIG_SYSFB_SIMPLEFB is not set
# CONFIG_GOOGLE_FIRMWARE is not set
#
# EFI (Extensible Firmware Interface) Support
#
CONFIG_EFI_VARS=y
CONFIG_EFI_ESRT=y
CONFIG_EFI_RUNTIME_MAP=y
# CONFIG_EFI_FAKE_MEMMAP is not set
CONFIG_EFI_RUNTIME_WRAPPERS=y
CONFIG_EFI_GENERIC_STUB_INITRD_CMDLINE_LOADER=y
# CONFIG_EFI_BOOTLOADER_CONTROL is not set
# CONFIG_EFI_CAPSULE_LOADER is not set
# CONFIG_EFI_TEST is not set
# CONFIG_APPLE_PROPERTIES is not set
# CONFIG_RESET_ATTACK_MITIGATION is not set
# CONFIG_EFI_RCI2_TABLE is not set
# CONFIG_EFI_DISABLE_PCI_DMA is not set
# end of EFI (Extensible Firmware Interface) Support
CONFIG_EFI_EARLYCON=y
CONFIG_EFI_CUSTOM_SSDT_OVERLAYS=y
#
# Tegra firmware driver
#
# end of Tegra firmware driver
# end of Firmware Drivers
# CONFIG_GNSS is not set
# CONFIG_MTD is not set
# CONFIG_OF is not set
CONFIG_ARCH_MIGHT_HAVE_PC_PARPORT=y
# CONFIG_PARPORT is not set
CONFIG_PNP=y
CONFIG_PNP_DEBUG_MESSAGES=y
#
# Protocols
#
CONFIG_PNPACPI=y
CONFIG_BLK_DEV=y
# CONFIG_BLK_DEV_NULL_BLK is not set
# CONFIG_BLK_DEV_FD is not set
CONFIG_CDROM=y
# CONFIG_BLK_DEV_PCIESSD_MTIP32XX is not set
CONFIG_BLK_DEV_LOOP=y
CONFIG_BLK_DEV_LOOP_MIN_COUNT=8
# CONFIG_BLK_DEV_DRBD is not set
# CONFIG_BLK_DEV_NBD is not set
# CONFIG_BLK_DEV_SX8 is not set
# CONFIG_BLK_DEV_RAM is not set
# CONFIG_CDROM_PKTCDVD is not set
# CONFIG_ATA_OVER_ETH is not set
CONFIG_VIRTIO_BLK=y
# CONFIG_BLK_DEV_RBD is not set
# CONFIG_BLK_DEV_RSXX is not set
#
# NVME Support
#
# CONFIG_BLK_DEV_NVME is not set
# CONFIG_NVME_FC is not set
# CONFIG_NVME_TCP is not set
# CONFIG_NVME_TARGET is not set
# end of NVME Support
#
# Misc devices
#
# CONFIG_AD525X_DPOT is not set
# CONFIG_DUMMY_IRQ is not set
# CONFIG_IBM_ASM is not set
# CONFIG_PHANTOM is not set
# CONFIG_TIFM_CORE is not set
# CONFIG_ICS932S401 is not set
# CONFIG_ENCLOSURE_SERVICES is not set
# CONFIG_HP_ILO is not set
# CONFIG_APDS9802ALS is not set
# CONFIG_ISL29003 is not set
# CONFIG_ISL29020 is not set
# CONFIG_SENSORS_TSL2550 is not set
# CONFIG_SENSORS_BH1770 is not set
# CONFIG_SENSORS_APDS990X is not set
# CONFIG_HMC6352 is not set
# CONFIG_DS1682 is not set
# CONFIG_SRAM is not set
# CONFIG_DW_XDATA_PCIE is not set
# CONFIG_PCI_ENDPOINT_TEST is not set
# CONFIG_XILINX_SDFEC is not set
# CONFIG_C2PORT is not set
#
# EEPROM support
#
# CONFIG_EEPROM_AT24 is not set
# CONFIG_EEPROM_LEGACY is not set
# CONFIG_EEPROM_MAX6875 is not set
# CONFIG_EEPROM_93CX6 is not set
# CONFIG_EEPROM_IDT_89HPESX is not set
# CONFIG_EEPROM_EE1004 is not set
# end of EEPROM support
# CONFIG_CB710_CORE is not set
#
# Texas Instruments shared transport line discipline
#
# end of Texas Instruments shared transport line discipline
# CONFIG_SENSORS_LIS3_I2C is not set
# CONFIG_ALTERA_STAPL is not set
# CONFIG_INTEL_MEI is not set
# CONFIG_INTEL_MEI_ME is not set
# CONFIG_INTEL_MEI_TXE is not set
# CONFIG_INTEL_MEI_HDCP is not set
# CONFIG_INTEL_MEI_PXP is not set
# CONFIG_VMWARE_VMCI is not set
# CONFIG_GENWQE is not set
# CONFIG_ECHO is not set
# CONFIG_BCM_VK is not set
# CONFIG_MISC_ALCOR_PCI is not set
# CONFIG_MISC_RTSX_PCI is not set
# CONFIG_MISC_RTSX_USB is not set
# CONFIG_HABANA_AI is not set
# CONFIG_UACCE is not set
# CONFIG_PVPANIC is not set
# end of Misc devices
#
# SCSI device support
#
CONFIG_SCSI_MOD=y
# CONFIG_RAID_ATTRS is not set
CONFIG_SCSI_COMMON=y
CONFIG_SCSI=y
CONFIG_SCSI_DMA=y
CONFIG_SCSI_PROC_FS=y
#
# SCSI support type (disk, tape, CD-ROM)
#
CONFIG_BLK_DEV_SD=y
# CONFIG_CHR_DEV_ST is not set
CONFIG_BLK_DEV_SR=y
CONFIG_CHR_DEV_SG=y
CONFIG_BLK_DEV_BSG=y
# CONFIG_CHR_DEV_SCH is not set
CONFIG_SCSI_CONSTANTS=y
# CONFIG_SCSI_LOGGING is not set
# CONFIG_SCSI_SCAN_ASYNC is not set
#
# SCSI Transports
#
CONFIG_SCSI_SPI_ATTRS=y
# CONFIG_SCSI_FC_ATTRS is not set
# CONFIG_SCSI_ISCSI_ATTRS is not set
# CONFIG_SCSI_SAS_ATTRS is not set
# CONFIG_SCSI_SAS_LIBSAS is not set
# CONFIG_SCSI_SRP_ATTRS is not set
# end of SCSI Transports
CONFIG_SCSI_LOWLEVEL=y
# CONFIG_ISCSI_TCP is not set
# CONFIG_ISCSI_BOOT_SYSFS is not set
# CONFIG_SCSI_CXGB3_ISCSI is not set
# CONFIG_SCSI_CXGB4_ISCSI is not set
# CONFIG_SCSI_BNX2_ISCSI is not set
# CONFIG_BE2ISCSI is not set
# CONFIG_BLK_DEV_3W_XXXX_RAID is not set
# CONFIG_SCSI_HPSA is not set
# CONFIG_SCSI_3W_9XXX is not set
# CONFIG_SCSI_3W_SAS is not set
# CONFIG_SCSI_ACARD is not set
# CONFIG_SCSI_AACRAID is not set
# CONFIG_SCSI_AIC7XXX is not set
# CONFIG_SCSI_AIC79XX is not set
# CONFIG_SCSI_AIC94XX is not set
# CONFIG_SCSI_MVSAS is not set
# CONFIG_SCSI_MVUMI is not set
# CONFIG_SCSI_DPT_I2O is not set
# CONFIG_SCSI_ADVANSYS is not set
# CONFIG_SCSI_ARCMSR is not set
# CONFIG_SCSI_ESAS2R is not set
# CONFIG_MEGARAID_NEWGEN is not set
# CONFIG_MEGARAID_LEGACY is not set
# CONFIG_MEGARAID_SAS is not set
# CONFIG_SCSI_MPT3SAS is not set
# CONFIG_SCSI_MPT2SAS is not set
# CONFIG_SCSI_MPI3MR is not set
# CONFIG_SCSI_SMARTPQI is not set
# CONFIG_SCSI_UFSHCD is not set
# CONFIG_SCSI_UFS_HWMON is not set
# CONFIG_SCSI_HPTIOP is not set
# CONFIG_SCSI_BUSLOGIC is not set
# CONFIG_SCSI_MYRB is not set
# CONFIG_SCSI_MYRS is not set
# CONFIG_VMWARE_PVSCSI is not set
# CONFIG_SCSI_SNIC is not set
# CONFIG_SCSI_DMX3191D is not set
# CONFIG_SCSI_FDOMAIN_PCI is not set
# CONFIG_SCSI_ISCI is not set
# CONFIG_SCSI_IPS is not set
# CONFIG_SCSI_INITIO is not set
# CONFIG_SCSI_INIA100 is not set
# CONFIG_SCSI_STEX is not set
# CONFIG_SCSI_SYM53C8XX_2 is not set
# CONFIG_SCSI_IPR is not set
# CONFIG_SCSI_QLOGIC_1280 is not set
# CONFIG_SCSI_QLA_ISCSI is not set
# CONFIG_SCSI_DC395x is not set
# CONFIG_SCSI_AM53C974 is not set
# CONFIG_SCSI_WD719X is not set
# CONFIG_SCSI_DEBUG is not set
# CONFIG_SCSI_PMCRAID is not set
# CONFIG_SCSI_PM8001 is not set
CONFIG_SCSI_VIRTIO=y
# CONFIG_SCSI_LOWLEVEL_PCMCIA is not set
# CONFIG_SCSI_DH is not set
# end of SCSI device support
CONFIG_ATA=y
CONFIG_SATA_HOST=y
CONFIG_PATA_TIMINGS=y
CONFIG_ATA_VERBOSE_ERROR=y
CONFIG_ATA_FORCE=y
CONFIG_ATA_ACPI=y
# CONFIG_SATA_ZPODD is not set
CONFIG_SATA_PMP=y
#
# Controllers with non-SFF native interface
#
CONFIG_SATA_AHCI=y
CONFIG_SATA_MOBILE_LPM_POLICY=0
# CONFIG_SATA_AHCI_PLATFORM is not set
# CONFIG_SATA_INIC162X is not set
# CONFIG_SATA_ACARD_AHCI is not set
# CONFIG_SATA_SIL24 is not set
CONFIG_ATA_SFF=y
#
# SFF controllers with custom DMA interface
#
# CONFIG_PDC_ADMA is not set
# CONFIG_SATA_QSTOR is not set
# CONFIG_SATA_SX4 is not set
CONFIG_ATA_BMDMA=y
#
# SATA SFF controllers with BMDMA
#
CONFIG_ATA_PIIX=y
# CONFIG_SATA_DWC is not set
# CONFIG_SATA_MV is not set
# CONFIG_SATA_NV is not set
# CONFIG_SATA_PROMISE is not set
# CONFIG_SATA_SIL is not set
# CONFIG_SATA_SIS is not set
# CONFIG_SATA_SVW is not set
# CONFIG_SATA_ULI is not set
# CONFIG_SATA_VIA is not set
# CONFIG_SATA_VITESSE is not set
#
# PATA SFF controllers with BMDMA
#
# CONFIG_PATA_ALI is not set
CONFIG_PATA_AMD=y
# CONFIG_PATA_ARTOP is not set
# CONFIG_PATA_ATIIXP is not set
# CONFIG_PATA_ATP867X is not set
# CONFIG_PATA_CMD64X is not set
# CONFIG_PATA_CYPRESS is not set
# CONFIG_PATA_EFAR is not set
# CONFIG_PATA_HPT366 is not set
# CONFIG_PATA_HPT37X is not set
# CONFIG_PATA_HPT3X2N is not set
# CONFIG_PATA_HPT3X3 is not set
# CONFIG_PATA_IT8213 is not set
# CONFIG_PATA_IT821X is not set
# CONFIG_PATA_JMICRON is not set
# CONFIG_PATA_MARVELL is not set
# CONFIG_PATA_NETCELL is not set
# CONFIG_PATA_NINJA32 is not set
# CONFIG_PATA_NS87415 is not set
CONFIG_PATA_OLDPIIX=y
# CONFIG_PATA_OPTIDMA is not set
# CONFIG_PATA_PDC2027X is not set
# CONFIG_PATA_PDC_OLD is not set
# CONFIG_PATA_RADISYS is not set
# CONFIG_PATA_RDC is not set
CONFIG_PATA_SCH=y
# CONFIG_PATA_SERVERWORKS is not set
# CONFIG_PATA_SIL680 is not set
# CONFIG_PATA_SIS is not set
# CONFIG_PATA_TOSHIBA is not set
# CONFIG_PATA_TRIFLEX is not set
# CONFIG_PATA_VIA is not set
# CONFIG_PATA_WINBOND is not set
#
# PIO-only SFF controllers
#
# CONFIG_PATA_CMD640_PCI is not set
# CONFIG_PATA_MPIIX is not set
# CONFIG_PATA_NS87410 is not set
# CONFIG_PATA_OPTI is not set
# CONFIG_PATA_PCMCIA is not set
# CONFIG_PATA_PLATFORM is not set
# CONFIG_PATA_RZ1000 is not set
#
# Generic fallback / legacy drivers
#
# CONFIG_PATA_ACPI is not set
# CONFIG_ATA_GENERIC is not set
# CONFIG_PATA_LEGACY is not set
CONFIG_MD=y
CONFIG_BLK_DEV_MD=y
CONFIG_MD_AUTODETECT=y
# CONFIG_MD_LINEAR is not set
# CONFIG_MD_RAID0 is not set
# CONFIG_MD_RAID1 is not set
# CONFIG_MD_RAID10 is not set
# CONFIG_MD_RAID456 is not set
# CONFIG_MD_MULTIPATH is not set
# CONFIG_MD_FAULTY is not set
# CONFIG_BCACHE is not set
CONFIG_BLK_DEV_DM_BUILTIN=y
CONFIG_BLK_DEV_DM=y
# CONFIG_DM_DEBUG is not set
# CONFIG_DM_UNSTRIPED is not set
# CONFIG_DM_CRYPT is not set
# CONFIG_DM_SNAPSHOT is not set
# CONFIG_DM_THIN_PROVISIONING is not set
# CONFIG_DM_CACHE is not set
# CONFIG_DM_WRITECACHE is not set
# CONFIG_DM_EBS is not set
# CONFIG_DM_ERA is not set
# CONFIG_DM_CLONE is not set
CONFIG_DM_MIRROR=y
# CONFIG_DM_LOG_USERSPACE is not set
# CONFIG_DM_RAID is not set
CONFIG_DM_ZERO=y
# CONFIG_DM_MULTIPATH is not set
# CONFIG_DM_DELAY is not set
# CONFIG_DM_DUST is not set
# CONFIG_DM_INIT is not set
# CONFIG_DM_UEVENT is not set
# CONFIG_DM_FLAKEY is not set
# CONFIG_DM_VERITY is not set
# CONFIG_DM_SWITCH is not set
# CONFIG_DM_LOG_WRITES is not set
# CONFIG_DM_INTEGRITY is not set
# CONFIG_DM_AUDIT is not set
# CONFIG_TARGET_CORE is not set
# CONFIG_FUSION is not set
#
# IEEE 1394 (FireWire) support
#
# CONFIG_FIREWIRE is not set
# CONFIG_FIREWIRE_NOSY is not set
# end of IEEE 1394 (FireWire) support
CONFIG_MACINTOSH_DRIVERS=y
CONFIG_MAC_EMUMOUSEBTN=y
CONFIG_NETDEVICES=y
CONFIG_MII=y
CONFIG_NET_CORE=y
# CONFIG_BONDING is not set
# CONFIG_DUMMY is not set
# CONFIG_WIREGUARD is not set
# CONFIG_EQUALIZER is not set
# CONFIG_NET_FC is not set
# CONFIG_NET_TEAM is not set
# CONFIG_MACVLAN is not set
# CONFIG_IPVLAN is not set
# CONFIG_VXLAN is not set
# CONFIG_GENEVE is not set
# CONFIG_BAREUDP is not set
# CONFIG_GTP is not set
# CONFIG_AMT is not set
# CONFIG_MACSEC is not set
CONFIG_NETCONSOLE=y
# CONFIG_NETCONSOLE_DYNAMIC is not set
CONFIG_NETPOLL=y
CONFIG_NET_POLL_CONTROLLER=y
CONFIG_TUN=y
# CONFIG_TUN_VNET_CROSS_LE is not set
# CONFIG_VETH is not set
CONFIG_VIRTIO_NET=y
# CONFIG_NLMON is not set
# CONFIG_ARCNET is not set
CONFIG_ETHERNET=y
CONFIG_NET_VENDOR_3COM=y
# CONFIG_PCMCIA_3C574 is not set
# CONFIG_PCMCIA_3C589 is not set
# CONFIG_VORTEX is not set
# CONFIG_TYPHOON is not set
CONFIG_NET_VENDOR_ADAPTEC=y
# CONFIG_ADAPTEC_STARFIRE is not set
CONFIG_NET_VENDOR_AGERE=y
# CONFIG_ET131X is not set
CONFIG_NET_VENDOR_ALACRITECH=y
# CONFIG_SLICOSS is not set
CONFIG_NET_VENDOR_ALTEON=y
# CONFIG_ACENIC is not set
# CONFIG_ALTERA_TSE is not set
CONFIG_NET_VENDOR_AMAZON=y
# CONFIG_ENA_ETHERNET is not set
CONFIG_NET_VENDOR_AMD=y
# CONFIG_AMD8111_ETH is not set
# CONFIG_PCNET32 is not set
# CONFIG_PCMCIA_NMCLAN is not set
# CONFIG_AMD_XGBE is not set
CONFIG_NET_VENDOR_AQUANTIA=y
# CONFIG_AQTION is not set
CONFIG_NET_VENDOR_ARC=y
CONFIG_NET_VENDOR_ASIX=y
CONFIG_NET_VENDOR_ATHEROS=y
# CONFIG_ATL2 is not set
# CONFIG_ATL1 is not set
# CONFIG_ATL1E is not set
# CONFIG_ATL1C is not set
# CONFIG_ALX is not set
CONFIG_NET_VENDOR_BROADCOM=y
# CONFIG_B44 is not set
# CONFIG_BCMGENET is not set
# CONFIG_BNX2 is not set
# CONFIG_CNIC is not set
CONFIG_TIGON3=y
CONFIG_TIGON3_HWMON=y
# CONFIG_BNX2X is not set
# CONFIG_SYSTEMPORT is not set
# CONFIG_BNXT is not set
CONFIG_NET_VENDOR_BROCADE=y
# CONFIG_BNA is not set
CONFIG_NET_VENDOR_CADENCE=y
# CONFIG_MACB is not set
CONFIG_NET_VENDOR_CAVIUM=y
# CONFIG_THUNDER_NIC_PF is not set
# CONFIG_THUNDER_NIC_VF is not set
# CONFIG_THUNDER_NIC_BGX is not set
# CONFIG_THUNDER_NIC_RGX is not set
# CONFIG_CAVIUM_PTP is not set
# CONFIG_LIQUIDIO is not set
# CONFIG_LIQUIDIO_VF is not set
CONFIG_NET_VENDOR_CHELSIO=y
# CONFIG_CHELSIO_T1 is not set
# CONFIG_CHELSIO_T3 is not set
# CONFIG_CHELSIO_T4 is not set
# CONFIG_CHELSIO_T4VF is not set
CONFIG_NET_VENDOR_CISCO=y
# CONFIG_ENIC is not set
CONFIG_NET_VENDOR_CORTINA=y
# CONFIG_CX_ECAT is not set
# CONFIG_DNET is not set
CONFIG_NET_VENDOR_DEC=y
CONFIG_NET_TULIP=y
# CONFIG_DE2104X is not set
# CONFIG_TULIP is not set
# CONFIG_DE4X5 is not set
# CONFIG_WINBOND_840 is not set
# CONFIG_DM9102 is not set
# CONFIG_ULI526X is not set
# CONFIG_PCMCIA_XIRCOM is not set
CONFIG_NET_VENDOR_DLINK=y
# CONFIG_DL2K is not set
# CONFIG_SUNDANCE is not set
CONFIG_NET_VENDOR_EMULEX=y
# CONFIG_BE2NET is not set
CONFIG_NET_VENDOR_EZCHIP=y
CONFIG_NET_VENDOR_FUJITSU=y
# CONFIG_PCMCIA_FMVJ18X is not set
CONFIG_NET_VENDOR_GOOGLE=y
# CONFIG_GVE is not set
CONFIG_NET_VENDOR_HUAWEI=y
# CONFIG_HINIC is not set
CONFIG_NET_VENDOR_I825XX=y
CONFIG_NET_VENDOR_INTEL=y
CONFIG_E100=y
CONFIG_E1000=y
CONFIG_E1000E=y
CONFIG_E1000E_HWTS=y
# CONFIG_IGB is not set
# CONFIG_IGBVF is not set
# CONFIG_IXGB is not set
# CONFIG_IXGBE is not set
# CONFIG_IXGBEVF is not set
# CONFIG_I40E is not set
# CONFIG_I40EVF is not set
# CONFIG_ICE is not set
# CONFIG_FM10K is not set
# CONFIG_IGC is not set
CONFIG_NET_VENDOR_MICROSOFT=y
# CONFIG_JME is not set
CONFIG_NET_VENDOR_LITEX=y
CONFIG_NET_VENDOR_MARVELL=y
# CONFIG_MVMDIO is not set
# CONFIG_SKGE is not set
CONFIG_SKY2=y
# CONFIG_SKY2_DEBUG is not set
CONFIG_NET_VENDOR_MELLANOX=y
# CONFIG_MLX4_EN is not set
# CONFIG_MLX5_CORE is not set
# CONFIG_MLXSW_CORE is not set
# CONFIG_MLXFW is not set
CONFIG_NET_VENDOR_MICREL=y
# CONFIG_KS8842 is not set
# CONFIG_KS8851_MLL is not set
# CONFIG_KSZ884X_PCI is not set
CONFIG_NET_VENDOR_MICROCHIP=y
# CONFIG_LAN743X is not set
CONFIG_NET_VENDOR_MICROSEMI=y
CONFIG_NET_VENDOR_MYRI=y
# CONFIG_MYRI10GE is not set
# CONFIG_FEALNX is not set
CONFIG_NET_VENDOR_NATSEMI=y
# CONFIG_NATSEMI is not set
# CONFIG_NS83820 is not set
CONFIG_NET_VENDOR_NETERION=y
# CONFIG_S2IO is not set
# CONFIG_VXGE is not set
CONFIG_NET_VENDOR_NETRONOME=y
# CONFIG_NFP is not set
CONFIG_NET_VENDOR_NI=y
# CONFIG_NI_XGE_MANAGEMENT_ENET is not set
CONFIG_NET_VENDOR_8390=y
# CONFIG_PCMCIA_AXNET is not set
# CONFIG_NE2K_PCI is not set
# CONFIG_PCMCIA_PCNET is not set
CONFIG_NET_VENDOR_NVIDIA=y
CONFIG_FORCEDETH=y
CONFIG_NET_VENDOR_OKI=y
# CONFIG_ETHOC is not set
CONFIG_NET_VENDOR_PACKET_ENGINES=y
# CONFIG_HAMACHI is not set
# CONFIG_YELLOWFIN is not set
CONFIG_NET_VENDOR_PENSANDO=y
# CONFIG_IONIC is not set
CONFIG_NET_VENDOR_QLOGIC=y
# CONFIG_QLA3XXX is not set
# CONFIG_QLCNIC is not set
# CONFIG_NETXEN_NIC is not set
# CONFIG_QED is not set
CONFIG_NET_VENDOR_QUALCOMM=y
# CONFIG_QCOM_EMAC is not set
# CONFIG_RMNET is not set
CONFIG_NET_VENDOR_RDC=y
# CONFIG_R6040 is not set
CONFIG_NET_VENDOR_REALTEK=y
# CONFIG_8139CP is not set
CONFIG_8139TOO=y
CONFIG_8139TOO_PIO=y
# CONFIG_8139TOO_TUNE_TWISTER is not set
# CONFIG_8139TOO_8129 is not set
# CONFIG_8139_OLD_RX_RESET is not set
CONFIG_R8169=y
CONFIG_NET_VENDOR_RENESAS=y
CONFIG_NET_VENDOR_ROCKER=y
CONFIG_NET_VENDOR_SAMSUNG=y
# CONFIG_SXGBE_ETH is not set
CONFIG_NET_VENDOR_SEEQ=y
CONFIG_NET_VENDOR_SOLARFLARE=y
# CONFIG_SFC is not set
# CONFIG_SFC_FALCON is not set
CONFIG_NET_VENDOR_SILAN=y
# CONFIG_SC92031 is not set
CONFIG_NET_VENDOR_SIS=y
# CONFIG_SIS900 is not set
# CONFIG_SIS190 is not set
CONFIG_NET_VENDOR_SMSC=y
# CONFIG_PCMCIA_SMC91C92 is not set
# CONFIG_EPIC100 is not set
# CONFIG_SMSC911X is not set
# CONFIG_SMSC9420 is not set
CONFIG_NET_VENDOR_SOCIONEXT=y
CONFIG_NET_VENDOR_STMICRO=y
# CONFIG_STMMAC_ETH is not set
CONFIG_NET_VENDOR_SUN=y
# CONFIG_HAPPYMEAL is not set
# CONFIG_SUNGEM is not set
# CONFIG_CASSINI is not set
# CONFIG_NIU is not set
CONFIG_NET_VENDOR_SYNOPSYS=y
# CONFIG_DWC_XLGMAC is not set
CONFIG_NET_VENDOR_TEHUTI=y
# CONFIG_TEHUTI is not set
CONFIG_NET_VENDOR_TI=y
# CONFIG_TI_CPSW_PHY_SEL is not set
# CONFIG_TLAN is not set
CONFIG_NET_VENDOR_VIA=y
# CONFIG_VIA_RHINE is not set
# CONFIG_VIA_VELOCITY is not set
CONFIG_NET_VENDOR_WIZNET=y
# CONFIG_WIZNET_W5100 is not set
# CONFIG_WIZNET_W5300 is not set
CONFIG_NET_VENDOR_XILINX=y
# CONFIG_XILINX_EMACLITE is not set
# CONFIG_XILINX_AXI_EMAC is not set
# CONFIG_XILINX_LL_TEMAC is not set
CONFIG_NET_VENDOR_XIRCOM=y
# CONFIG_PCMCIA_XIRC2PS is not set
# CONFIG_FDDI is not set
# CONFIG_HIPPI is not set
# CONFIG_NET_SB1000 is not set
CONFIG_PHYLIB=y
CONFIG_SWPHY=y
# CONFIG_LED_TRIGGER_PHY is not set
CONFIG_FIXED_PHY=y
#
# MII PHY device drivers
#
# CONFIG_AMD_PHY is not set
# CONFIG_ADIN_PHY is not set
# CONFIG_AQUANTIA_PHY is not set
# CONFIG_AX88796B_PHY is not set
# CONFIG_BROADCOM_PHY is not set
# CONFIG_BCM54140_PHY is not set
# CONFIG_BCM7XXX_PHY is not set
# CONFIG_BCM84881_PHY is not set
# CONFIG_BCM87XX_PHY is not set
# CONFIG_CICADA_PHY is not set
# CONFIG_CORTINA_PHY is not set
# CONFIG_DAVICOM_PHY is not set
# CONFIG_ICPLUS_PHY is not set
# CONFIG_LXT_PHY is not set
# CONFIG_INTEL_XWAY_PHY is not set
# CONFIG_LSI_ET1011C_PHY is not set
# CONFIG_MARVELL_PHY is not set
# CONFIG_MARVELL_10G_PHY is not set
# CONFIG_MARVELL_88X2222_PHY is not set
# CONFIG_MAXLINEAR_GPHY is not set
# CONFIG_MEDIATEK_GE_PHY is not set
# CONFIG_MICREL_PHY is not set
# CONFIG_MICROCHIP_PHY is not set
# CONFIG_MICROCHIP_T1_PHY is not set
# CONFIG_MICROSEMI_PHY is not set
# CONFIG_MOTORCOMM_PHY is not set
# CONFIG_NATIONAL_PHY is not set
# CONFIG_NXP_C45_TJA11XX_PHY is not set
# CONFIG_NXP_TJA11XX_PHY is not set
# CONFIG_QSEMI_PHY is not set
CONFIG_REALTEK_PHY=y
# CONFIG_RENESAS_PHY is not set
# CONFIG_ROCKCHIP_PHY is not set
# CONFIG_SMSC_PHY is not set
# CONFIG_STE10XP is not set
# CONFIG_TERANETICS_PHY is not set
# CONFIG_DP83822_PHY is not set
# CONFIG_DP83TC811_PHY is not set
# CONFIG_DP83848_PHY is not set
# CONFIG_DP83867_PHY is not set
# CONFIG_DP83869_PHY is not set
# CONFIG_VITESSE_PHY is not set
# CONFIG_XILINX_GMII2RGMII is not set
CONFIG_MDIO_DEVICE=y
CONFIG_MDIO_BUS=y
CONFIG_FWNODE_MDIO=y
CONFIG_ACPI_MDIO=y
CONFIG_MDIO_DEVRES=y
# CONFIG_MDIO_BITBANG is not set
# CONFIG_MDIO_BCM_UNIMAC is not set
# CONFIG_MDIO_MVUSB is not set
# CONFIG_MDIO_MSCC_MIIM is not set
# CONFIG_MDIO_THUNDER is not set
#
# MDIO Multiplexers
#
#
# PCS device drivers
#
# CONFIG_PCS_XPCS is not set
# end of PCS device drivers
# CONFIG_PPP is not set
# CONFIG_SLIP is not set
CONFIG_USB_NET_DRIVERS=y
# CONFIG_USB_CATC is not set
# CONFIG_USB_KAWETH is not set
# CONFIG_USB_PEGASUS is not set
# CONFIG_USB_RTL8150 is not set
# CONFIG_USB_RTL8152 is not set
# CONFIG_USB_LAN78XX is not set
# CONFIG_USB_USBNET is not set
# CONFIG_USB_HSO is not set
# CONFIG_USB_IPHETH is not set
CONFIG_WLAN=y
CONFIG_WLAN_VENDOR_ADMTEK=y
# CONFIG_ADM8211 is not set
CONFIG_WLAN_VENDOR_ATH=y
# CONFIG_ATH_DEBUG is not set
# CONFIG_ATH5K is not set
# CONFIG_ATH5K_PCI is not set
# CONFIG_ATH9K is not set
# CONFIG_ATH9K_HTC is not set
# CONFIG_CARL9170 is not set
# CONFIG_ATH6KL is not set
# CONFIG_AR5523 is not set
# CONFIG_WIL6210 is not set
# CONFIG_ATH10K is not set
# CONFIG_WCN36XX is not set
CONFIG_WLAN_VENDOR_ATMEL=y
# CONFIG_ATMEL is not set
# CONFIG_AT76C50X_USB is not set
CONFIG_WLAN_VENDOR_BROADCOM=y
# CONFIG_B43 is not set
# CONFIG_B43LEGACY is not set
# CONFIG_BRCMSMAC is not set
# CONFIG_BRCMFMAC is not set
CONFIG_WLAN_VENDOR_CISCO=y
# CONFIG_AIRO is not set
# CONFIG_AIRO_CS is not set
CONFIG_WLAN_VENDOR_INTEL=y
# CONFIG_IPW2100 is not set
# CONFIG_IPW2200 is not set
# CONFIG_IWL4965 is not set
# CONFIG_IWL3945 is not set
# CONFIG_IWLWIFI is not set
CONFIG_WLAN_VENDOR_INTERSIL=y
# CONFIG_HOSTAP is not set
# CONFIG_HERMES is not set
# CONFIG_P54_COMMON is not set
CONFIG_WLAN_VENDOR_MARVELL=y
# CONFIG_LIBERTAS is not set
# CONFIG_LIBERTAS_THINFIRM is not set
# CONFIG_MWIFIEX is not set
# CONFIG_MWL8K is not set
CONFIG_WLAN_VENDOR_MEDIATEK=y
# CONFIG_MT7601U is not set
# CONFIG_MT76x0U is not set
# CONFIG_MT76x0E is not set
# CONFIG_MT76x2E is not set
# CONFIG_MT76x2U is not set
# CONFIG_MT7603E is not set
# CONFIG_MT7615E is not set
# CONFIG_MT7663U is not set
# CONFIG_MT7915E is not set
# CONFIG_MT7921E is not set
CONFIG_WLAN_VENDOR_MICROCHIP=y
CONFIG_WLAN_VENDOR_RALINK=y
# CONFIG_RT2X00 is not set
CONFIG_WLAN_VENDOR_REALTEK=y
# CONFIG_RTL8180 is not set
# CONFIG_RTL8187 is not set
CONFIG_RTL_CARDS=y
# CONFIG_RTL8192CE is not set
# CONFIG_RTL8192SE is not set
# CONFIG_RTL8192DE is not set
# CONFIG_RTL8723AE is not set
# CONFIG_RTL8723BE is not set
# CONFIG_RTL8188EE is not set
# CONFIG_RTL8192EE is not set
# CONFIG_RTL8821AE is not set
# CONFIG_RTL8192CU is not set
# CONFIG_RTL8XXXU is not set
# CONFIG_RTW88 is not set
# CONFIG_RTW89 is not set
CONFIG_WLAN_VENDOR_RSI=y
# CONFIG_RSI_91X is not set
CONFIG_WLAN_VENDOR_ST=y
# CONFIG_CW1200 is not set
CONFIG_WLAN_VENDOR_TI=y
# CONFIG_WL1251 is not set
# CONFIG_WL12XX is not set
# CONFIG_WL18XX is not set
# CONFIG_WLCORE is not set
CONFIG_WLAN_VENDOR_ZYDAS=y
# CONFIG_USB_ZD1201 is not set
# CONFIG_ZD1211RW is not set
CONFIG_WLAN_VENDOR_QUANTENNA=y
# CONFIG_QTNFMAC_PCIE is not set
# CONFIG_PCMCIA_RAYCS is not set
# CONFIG_PCMCIA_WL3501 is not set
# CONFIG_MAC80211_HWSIM is not set
# CONFIG_USB_NET_RNDIS_WLAN is not set
# CONFIG_VIRT_WIFI is not set
# CONFIG_WAN is not set
#
# Wireless WAN
#
# CONFIG_WWAN is not set
# end of Wireless WAN
# CONFIG_VMXNET3 is not set
# CONFIG_FUJITSU_ES is not set
# CONFIG_NETDEVSIM is not set
CONFIG_NET_FAILOVER=y
# CONFIG_ISDN is not set
#
# Input device support
#
CONFIG_INPUT=y
CONFIG_INPUT_LEDS=y
CONFIG_INPUT_FF_MEMLESS=y
CONFIG_INPUT_SPARSEKMAP=y
# CONFIG_INPUT_MATRIXKMAP is not set
#
# Userland interfaces
#
# CONFIG_INPUT_MOUSEDEV is not set
# CONFIG_INPUT_JOYDEV is not set
CONFIG_INPUT_EVDEV=y
# CONFIG_INPUT_EVBUG is not set
#
# Input Device Drivers
#
CONFIG_INPUT_KEYBOARD=y
# CONFIG_KEYBOARD_ADP5588 is not set
# CONFIG_KEYBOARD_ADP5589 is not set
CONFIG_KEYBOARD_ATKBD=y
# CONFIG_KEYBOARD_QT1050 is not set
# CONFIG_KEYBOARD_QT1070 is not set
# CONFIG_KEYBOARD_QT2160 is not set
# CONFIG_KEYBOARD_DLINK_DIR685 is not set
# CONFIG_KEYBOARD_LKKBD is not set
# CONFIG_KEYBOARD_TCA6416 is not set
# CONFIG_KEYBOARD_TCA8418 is not set
# CONFIG_KEYBOARD_LM8323 is not set
# CONFIG_KEYBOARD_LM8333 is not set
# CONFIG_KEYBOARD_MAX7359 is not set
# CONFIG_KEYBOARD_MCS is not set
# CONFIG_KEYBOARD_MPR121 is not set
# CONFIG_KEYBOARD_NEWTON is not set
# CONFIG_KEYBOARD_OPENCORES is not set
# CONFIG_KEYBOARD_SAMSUNG is not set
# CONFIG_KEYBOARD_STOWAWAY is not set
# CONFIG_KEYBOARD_SUNKBD is not set
# CONFIG_KEYBOARD_TM2_TOUCHKEY is not set
# CONFIG_KEYBOARD_XTKBD is not set
# CONFIG_KEYBOARD_CYPRESS_SF is not set
CONFIG_INPUT_MOUSE=y
CONFIG_MOUSE_PS2=y
CONFIG_MOUSE_PS2_ALPS=y
CONFIG_MOUSE_PS2_BYD=y
CONFIG_MOUSE_PS2_LOGIPS2PP=y
CONFIG_MOUSE_PS2_SYNAPTICS=y
CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS=y
CONFIG_MOUSE_PS2_CYPRESS=y
CONFIG_MOUSE_PS2_LIFEBOOK=y
CONFIG_MOUSE_PS2_TRACKPOINT=y
# CONFIG_MOUSE_PS2_ELANTECH is not set
# CONFIG_MOUSE_PS2_SENTELIC is not set
# CONFIG_MOUSE_PS2_TOUCHKIT is not set
CONFIG_MOUSE_PS2_FOCALTECH=y
# CONFIG_MOUSE_PS2_VMMOUSE is not set
CONFIG_MOUSE_PS2_SMBUS=y
# CONFIG_MOUSE_SERIAL is not set
# CONFIG_MOUSE_APPLETOUCH is not set
# CONFIG_MOUSE_BCM5974 is not set
# CONFIG_MOUSE_CYAPA is not set
# CONFIG_MOUSE_ELAN_I2C is not set
# CONFIG_MOUSE_VSXXXAA is not set
# CONFIG_MOUSE_SYNAPTICS_I2C is not set
# CONFIG_MOUSE_SYNAPTICS_USB is not set
CONFIG_INPUT_JOYSTICK=y
# CONFIG_JOYSTICK_ANALOG is not set
# CONFIG_JOYSTICK_A3D is not set
# CONFIG_JOYSTICK_ADI is not set
# CONFIG_JOYSTICK_COBRA is not set
# CONFIG_JOYSTICK_GF2K is not set
# CONFIG_JOYSTICK_GRIP is not set
# CONFIG_JOYSTICK_GRIP_MP is not set
# CONFIG_JOYSTICK_GUILLEMOT is not set
# CONFIG_JOYSTICK_INTERACT is not set
# CONFIG_JOYSTICK_SIDEWINDER is not set
# CONFIG_JOYSTICK_TMDC is not set
# CONFIG_JOYSTICK_IFORCE is not set
# CONFIG_JOYSTICK_WARRIOR is not set
# CONFIG_JOYSTICK_MAGELLAN is not set
# CONFIG_JOYSTICK_SPACEORB is not set
# CONFIG_JOYSTICK_SPACEBALL is not set
# CONFIG_JOYSTICK_STINGER is not set
# CONFIG_JOYSTICK_TWIDJOY is not set
# CONFIG_JOYSTICK_ZHENHUA is not set
# CONFIG_JOYSTICK_AS5011 is not set
# CONFIG_JOYSTICK_JOYDUMP is not set
# CONFIG_JOYSTICK_XPAD is not set
# CONFIG_JOYSTICK_PXRC is not set
# CONFIG_JOYSTICK_QWIIC is not set
# CONFIG_JOYSTICK_FSIA6B is not set
CONFIG_INPUT_TABLET=y
# CONFIG_TABLET_USB_ACECAD is not set
# CONFIG_TABLET_USB_AIPTEK is not set
# CONFIG_TABLET_USB_HANWANG is not set
# CONFIG_TABLET_USB_KBTAB is not set
# CONFIG_TABLET_USB_PEGASUS is not set
# CONFIG_TABLET_SERIAL_WACOM4 is not set
CONFIG_INPUT_TOUCHSCREEN=y
# CONFIG_TOUCHSCREEN_AD7879 is not set
# CONFIG_TOUCHSCREEN_ATMEL_MXT is not set
# CONFIG_TOUCHSCREEN_BU21013 is not set
# CONFIG_TOUCHSCREEN_BU21029 is not set
# CONFIG_TOUCHSCREEN_CHIPONE_ICN8505 is not set
# CONFIG_TOUCHSCREEN_CY8CTMA140 is not set
# CONFIG_TOUCHSCREEN_CYTTSP_CORE is not set
# CONFIG_TOUCHSCREEN_CYTTSP4_CORE is not set
# CONFIG_TOUCHSCREEN_DYNAPRO is not set
# CONFIG_TOUCHSCREEN_HAMPSHIRE is not set
# CONFIG_TOUCHSCREEN_EETI is not set
# CONFIG_TOUCHSCREEN_EGALAX_SERIAL is not set
# CONFIG_TOUCHSCREEN_EXC3000 is not set
# CONFIG_TOUCHSCREEN_FUJITSU is not set
# CONFIG_TOUCHSCREEN_HIDEEP is not set
# CONFIG_TOUCHSCREEN_HYCON_HY46XX is not set
# CONFIG_TOUCHSCREEN_ILI210X is not set
# CONFIG_TOUCHSCREEN_ILITEK is not set
# CONFIG_TOUCHSCREEN_S6SY761 is not set
# CONFIG_TOUCHSCREEN_GUNZE is not set
# CONFIG_TOUCHSCREEN_EKTF2127 is not set
# CONFIG_TOUCHSCREEN_ELAN is not set
# CONFIG_TOUCHSCREEN_ELO is not set
# CONFIG_TOUCHSCREEN_WACOM_W8001 is not set
# CONFIG_TOUCHSCREEN_WACOM_I2C is not set
# CONFIG_TOUCHSCREEN_MAX11801 is not set
# CONFIG_TOUCHSCREEN_MCS5000 is not set
# CONFIG_TOUCHSCREEN_MMS114 is not set
# CONFIG_TOUCHSCREEN_MELFAS_MIP4 is not set
# CONFIG_TOUCHSCREEN_MTOUCH is not set
# CONFIG_TOUCHSCREEN_INEXIO is not set
# CONFIG_TOUCHSCREEN_MK712 is not set
# CONFIG_TOUCHSCREEN_PENMOUNT is not set
# CONFIG_TOUCHSCREEN_EDT_FT5X06 is not set
# CONFIG_TOUCHSCREEN_TOUCHRIGHT is not set
# CONFIG_TOUCHSCREEN_TOUCHWIN is not set
# CONFIG_TOUCHSCREEN_PIXCIR is not set
# CONFIG_TOUCHSCREEN_WDT87XX_I2C is not set
# CONFIG_TOUCHSCREEN_USB_COMPOSITE is not set
# CONFIG_TOUCHSCREEN_TOUCHIT213 is not set
# CONFIG_TOUCHSCREEN_TSC_SERIO is not set
# CONFIG_TOUCHSCREEN_TSC2004 is not set
# CONFIG_TOUCHSCREEN_TSC2007 is not set
# CONFIG_TOUCHSCREEN_SILEAD is not set
# CONFIG_TOUCHSCREEN_ST1232 is not set
# CONFIG_TOUCHSCREEN_STMFTS is not set
# CONFIG_TOUCHSCREEN_SX8654 is not set
# CONFIG_TOUCHSCREEN_TPS6507X is not set
# CONFIG_TOUCHSCREEN_ZET6223 is not set
# CONFIG_TOUCHSCREEN_ROHM_BU21023 is not set
# CONFIG_TOUCHSCREEN_IQS5XX is not set
# CONFIG_TOUCHSCREEN_ZINITIX is not set
CONFIG_INPUT_MISC=y
# CONFIG_INPUT_AD714X is not set
# CONFIG_INPUT_BMA150 is not set
# CONFIG_INPUT_E3X0_BUTTON is not set
# CONFIG_INPUT_PCSPKR is not set
# CONFIG_INPUT_MMA8450 is not set
# CONFIG_INPUT_APANEL is not set
# CONFIG_INPUT_ATLAS_BTNS is not set
# CONFIG_INPUT_ATI_REMOTE2 is not set
# CONFIG_INPUT_KEYSPAN_REMOTE is not set
# CONFIG_INPUT_KXTJ9 is not set
# CONFIG_INPUT_POWERMATE is not set
# CONFIG_INPUT_YEALINK is not set
# CONFIG_INPUT_CM109 is not set
# CONFIG_INPUT_UINPUT is not set
# CONFIG_INPUT_PCF8574 is not set
# CONFIG_INPUT_DA7280_HAPTICS is not set
# CONFIG_INPUT_ADXL34X is not set
# CONFIG_INPUT_IMS_PCU is not set
# CONFIG_INPUT_IQS269A is not set
# CONFIG_INPUT_IQS626A is not set
# CONFIG_INPUT_CMA3000 is not set
# CONFIG_INPUT_IDEAPAD_SLIDEBAR is not set
# CONFIG_INPUT_DRV2665_HAPTICS is not set
# CONFIG_INPUT_DRV2667_HAPTICS is not set
# CONFIG_RMI4_CORE is not set
#
# Hardware I/O ports
#
CONFIG_SERIO=y
CONFIG_ARCH_MIGHT_HAVE_PC_SERIO=y
CONFIG_SERIO_I8042=y
CONFIG_SERIO_SERPORT=y
# CONFIG_SERIO_CT82C710 is not set
# CONFIG_SERIO_PCIPS2 is not set
CONFIG_SERIO_LIBPS2=y
# CONFIG_SERIO_RAW is not set
# CONFIG_SERIO_ALTERA_PS2 is not set
# CONFIG_SERIO_PS2MULT is not set
# CONFIG_SERIO_ARC_PS2 is not set
# CONFIG_USERIO is not set
# CONFIG_GAMEPORT is not set
# end of Hardware I/O ports
# end of Input device support
#
# Character devices
#
CONFIG_TTY=y
CONFIG_VT=y
CONFIG_CONSOLE_TRANSLATIONS=y
CONFIG_VT_CONSOLE=y
CONFIG_VT_CONSOLE_SLEEP=y
CONFIG_HW_CONSOLE=y
# CONFIG_VT_HW_CONSOLE_BINDING is not set
CONFIG_UNIX98_PTYS=y
# CONFIG_LEGACY_PTYS is not set
CONFIG_LDISC_AUTOLOAD=y
#
# Serial drivers
#
CONFIG_SERIAL_EARLYCON=y
CONFIG_SERIAL_8250=y
CONFIG_SERIAL_8250_DEPRECATED_OPTIONS=y
CONFIG_SERIAL_8250_PNP=y
# CONFIG_SERIAL_8250_16550A_VARIANTS is not set
# CONFIG_SERIAL_8250_FINTEK is not set
CONFIG_SERIAL_8250_CONSOLE=y
CONFIG_SERIAL_8250_DMA=y
CONFIG_SERIAL_8250_PCI=y
CONFIG_SERIAL_8250_EXAR=y
# CONFIG_SERIAL_8250_CS is not set
CONFIG_SERIAL_8250_NR_UARTS=32
CONFIG_SERIAL_8250_RUNTIME_UARTS=4
CONFIG_SERIAL_8250_EXTENDED=y
CONFIG_SERIAL_8250_MANY_PORTS=y
CONFIG_SERIAL_8250_SHARE_IRQ=y
CONFIG_SERIAL_8250_DETECT_IRQ=y
CONFIG_SERIAL_8250_RSA=y
CONFIG_SERIAL_8250_DWLIB=y
# CONFIG_SERIAL_8250_DW is not set
# CONFIG_SERIAL_8250_RT288X is not set
CONFIG_SERIAL_8250_LPSS=y
CONFIG_SERIAL_8250_MID=y
#
# Non-8250 serial port support
#
# CONFIG_SERIAL_UARTLITE is not set
CONFIG_SERIAL_CORE=y
CONFIG_SERIAL_CORE_CONSOLE=y
# CONFIG_SERIAL_JSM is not set
# CONFIG_SERIAL_LANTIQ is not set
# CONFIG_SERIAL_SCCNXP is not set
# CONFIG_SERIAL_SC16IS7XX is not set
# CONFIG_SERIAL_BCM63XX is not set
# CONFIG_SERIAL_ALTERA_JTAGUART is not set
# CONFIG_SERIAL_ALTERA_UART is not set
# CONFIG_SERIAL_ARC is not set
# CONFIG_SERIAL_RP2 is not set
# CONFIG_SERIAL_FSL_LPUART is not set
# CONFIG_SERIAL_FSL_LINFLEXUART is not set
# CONFIG_SERIAL_SPRD is not set
# end of Serial drivers
CONFIG_SERIAL_NONSTANDARD=y
# CONFIG_MOXA_INTELLIO is not set
# CONFIG_MOXA_SMARTIO is not set
# CONFIG_SYNCLINK_GT is not set
# CONFIG_N_HDLC is not set
# CONFIG_N_GSM is not set
# CONFIG_NOZOMI is not set
# CONFIG_NULL_TTY is not set
CONFIG_HVC_DRIVER=y
# CONFIG_SERIAL_DEV_BUS is not set
# CONFIG_TTY_PRINTK is not set
CONFIG_VIRTIO_CONSOLE=y
# CONFIG_IPMI_HANDLER is not set
CONFIG_HW_RANDOM=y
# CONFIG_HW_RANDOM_TIMERIOMEM is not set
# CONFIG_HW_RANDOM_INTEL is not set
# CONFIG_HW_RANDOM_AMD is not set
# CONFIG_HW_RANDOM_BA431 is not set
CONFIG_HW_RANDOM_VIA=y
# CONFIG_HW_RANDOM_VIRTIO is not set
# CONFIG_HW_RANDOM_XIPHERA is not set
# CONFIG_APPLICOM is not set
#
# PCMCIA character devices
#
# CONFIG_SYNCLINK_CS is not set
# CONFIG_CARDMAN_4000 is not set
# CONFIG_CARDMAN_4040 is not set
# CONFIG_SCR24X is not set
# CONFIG_IPWIRELESS is not set
# end of PCMCIA character devices
# CONFIG_MWAVE is not set
CONFIG_DEVMEM=y
CONFIG_NVRAM=y
CONFIG_DEVPORT=y
CONFIG_HPET=y
# CONFIG_HPET_MMAP is not set
# CONFIG_HANGCHECK_TIMER is not set
# CONFIG_TCG_TPM is not set
# CONFIG_TELCLOCK is not set
# CONFIG_XILLYBUS is not set
# CONFIG_XILLYUSB is not set
# CONFIG_RANDOM_TRUST_CPU is not set
# CONFIG_RANDOM_TRUST_BOOTLOADER is not set
# end of Character devices
#
# I2C support
#
CONFIG_I2C=y
CONFIG_ACPI_I2C_OPREGION=y
CONFIG_I2C_BOARDINFO=y
CONFIG_I2C_COMPAT=y
# CONFIG_I2C_CHARDEV is not set
# CONFIG_I2C_MUX is not set
CONFIG_I2C_HELPER_AUTO=y
CONFIG_I2C_SMBUS=y
CONFIG_I2C_ALGOBIT=y
#
# I2C Hardware Bus support
#
#
# PC SMBus host controller drivers
#
# CONFIG_I2C_ALI1535 is not set
# CONFIG_I2C_ALI1563 is not set
# CONFIG_I2C_ALI15X3 is not set
# CONFIG_I2C_AMD756 is not set
# CONFIG_I2C_AMD8111 is not set
# CONFIG_I2C_AMD_MP2 is not set
CONFIG_I2C_I801=y
# CONFIG_I2C_ISCH is not set
# CONFIG_I2C_ISMT is not set
# CONFIG_I2C_PIIX4 is not set
# CONFIG_I2C_NFORCE2 is not set
# CONFIG_I2C_NVIDIA_GPU is not set
# CONFIG_I2C_SIS5595 is not set
# CONFIG_I2C_SIS630 is not set
# CONFIG_I2C_SIS96X is not set
# CONFIG_I2C_VIA is not set
# CONFIG_I2C_VIAPRO is not set
#
# ACPI drivers
#
# CONFIG_I2C_SCMI is not set
#
# I2C system bus drivers (mostly embedded / system-on-chip)
#
# CONFIG_I2C_DESIGNWARE_PLATFORM is not set
# CONFIG_I2C_DESIGNWARE_PCI is not set
# CONFIG_I2C_EMEV2 is not set
# CONFIG_I2C_OCORES is not set
# CONFIG_I2C_PCA_PLATFORM is not set
# CONFIG_I2C_SIMTEC is not set
# CONFIG_I2C_XILINX is not set
#
# External I2C/SMBus adapter drivers
#
# CONFIG_I2C_DIOLAN_U2C is not set
# CONFIG_I2C_CP2615 is not set
# CONFIG_I2C_ROBOTFUZZ_OSIF is not set
# CONFIG_I2C_TAOS_EVM is not set
# CONFIG_I2C_TINY_USB is not set
#
# Other I2C/SMBus bus drivers
#
# CONFIG_I2C_MLXCPLD is not set
# CONFIG_I2C_VIRTIO is not set
# end of I2C Hardware Bus support
# CONFIG_I2C_STUB is not set
# CONFIG_I2C_SLAVE is not set
# CONFIG_I2C_DEBUG_CORE is not set
# CONFIG_I2C_DEBUG_ALGO is not set
# CONFIG_I2C_DEBUG_BUS is not set
# end of I2C support
# CONFIG_I3C is not set
# CONFIG_SPI is not set
# CONFIG_SPMI is not set
# CONFIG_HSI is not set
CONFIG_PPS=y
# CONFIG_PPS_DEBUG is not set
#
# PPS clients support
#
# CONFIG_PPS_CLIENT_KTIMER is not set
# CONFIG_PPS_CLIENT_LDISC is not set
# CONFIG_PPS_CLIENT_GPIO is not set
#
# PPS generators support
#
#
# PTP clock support
#
CONFIG_PTP_1588_CLOCK=y
CONFIG_PTP_1588_CLOCK_OPTIONAL=y
#
# Enable PHYLIB and NETWORK_PHY_TIMESTAMPING to see the additional clocks.
#
# CONFIG_PTP_1588_CLOCK_IDT82P33 is not set
# CONFIG_PTP_1588_CLOCK_IDTCM is not set
# CONFIG_PTP_1588_CLOCK_VMW is not set
# end of PTP clock support
# CONFIG_PINCTRL is not set
# CONFIG_GPIOLIB is not set
# CONFIG_W1 is not set
# CONFIG_POWER_RESET is not set
CONFIG_POWER_SUPPLY=y
# CONFIG_POWER_SUPPLY_DEBUG is not set
CONFIG_POWER_SUPPLY_HWMON=y
# CONFIG_PDA_POWER is not set
CONFIG_TEST_POWER=m
# CONFIG_CHARGER_ADP5061 is not set
# CONFIG_BATTERY_CW2015 is not set
# CONFIG_BATTERY_DS2780 is not set
# CONFIG_BATTERY_DS2781 is not set
# CONFIG_BATTERY_DS2782 is not set
# CONFIG_BATTERY_SBS is not set
# CONFIG_CHARGER_SBS is not set
# CONFIG_BATTERY_BQ27XXX is not set
# CONFIG_BATTERY_MAX17040 is not set
# CONFIG_BATTERY_MAX17042 is not set
# CONFIG_CHARGER_MAX8903 is not set
# CONFIG_CHARGER_LP8727 is not set
# CONFIG_CHARGER_LTC4162L is not set
# CONFIG_CHARGER_BQ2415X is not set
# CONFIG_BATTERY_GAUGE_LTC2941 is not set
# CONFIG_BATTERY_GOLDFISH is not set
# CONFIG_BATTERY_RT5033 is not set
# CONFIG_CHARGER_BD99954 is not set
CONFIG_HWMON=y
# CONFIG_HWMON_DEBUG_CHIP is not set
#
# Native drivers
#
# CONFIG_SENSORS_ABITUGURU is not set
# CONFIG_SENSORS_ABITUGURU3 is not set
# CONFIG_SENSORS_AD7414 is not set
# CONFIG_SENSORS_AD7418 is not set
# CONFIG_SENSORS_ADM1021 is not set
# CONFIG_SENSORS_ADM1025 is not set
# CONFIG_SENSORS_ADM1026 is not set
# CONFIG_SENSORS_ADM1029 is not set
# CONFIG_SENSORS_ADM1031 is not set
# CONFIG_SENSORS_ADM1177 is not set
# CONFIG_SENSORS_ADM9240 is not set
# CONFIG_SENSORS_ADT7410 is not set
# CONFIG_SENSORS_ADT7411 is not set
# CONFIG_SENSORS_ADT7462 is not set
# CONFIG_SENSORS_ADT7470 is not set
# CONFIG_SENSORS_ADT7475 is not set
# CONFIG_SENSORS_AHT10 is not set
# CONFIG_SENSORS_AQUACOMPUTER_D5NEXT is not set
# CONFIG_SENSORS_AS370 is not set
# CONFIG_SENSORS_ASC7621 is not set
# CONFIG_SENSORS_AXI_FAN_CONTROL is not set
# CONFIG_SENSORS_K8TEMP is not set
# CONFIG_SENSORS_K10TEMP is not set
# CONFIG_SENSORS_FAM15H_POWER is not set
# CONFIG_SENSORS_APPLESMC is not set
# CONFIG_SENSORS_ASB100 is not set
# CONFIG_SENSORS_ASPEED is not set
# CONFIG_SENSORS_ATXP1 is not set
# CONFIG_SENSORS_CORSAIR_CPRO is not set
# CONFIG_SENSORS_CORSAIR_PSU is not set
# CONFIG_SENSORS_DRIVETEMP is not set
# CONFIG_SENSORS_DS620 is not set
# CONFIG_SENSORS_DS1621 is not set
# CONFIG_SENSORS_DELL_SMM is not set
# CONFIG_SENSORS_I5K_AMB is not set
# CONFIG_SENSORS_F71805F is not set
# CONFIG_SENSORS_F71882FG is not set
# CONFIG_SENSORS_F75375S is not set
# CONFIG_SENSORS_FSCHMD is not set
# CONFIG_SENSORS_FTSTEUTATES is not set
# CONFIG_SENSORS_GL518SM is not set
# CONFIG_SENSORS_GL520SM is not set
# CONFIG_SENSORS_G760A is not set
# CONFIG_SENSORS_G762 is not set
# CONFIG_SENSORS_HIH6130 is not set
# CONFIG_SENSORS_I5500 is not set
# CONFIG_SENSORS_CORETEMP is not set
# CONFIG_SENSORS_IT87 is not set
# CONFIG_SENSORS_JC42 is not set
# CONFIG_SENSORS_POWR1220 is not set
# CONFIG_SENSORS_LINEAGE is not set
# CONFIG_SENSORS_LTC2945 is not set
# CONFIG_SENSORS_LTC2947_I2C is not set
# CONFIG_SENSORS_LTC2990 is not set
# CONFIG_SENSORS_LTC4151 is not set
# CONFIG_SENSORS_LTC4215 is not set
# CONFIG_SENSORS_LTC4222 is not set
# CONFIG_SENSORS_LTC4245 is not set
# CONFIG_SENSORS_LTC4260 is not set
# CONFIG_SENSORS_LTC4261 is not set
# CONFIG_SENSORS_MAX127 is not set
# CONFIG_SENSORS_MAX16065 is not set
# CONFIG_SENSORS_MAX1619 is not set
# CONFIG_SENSORS_MAX1668 is not set
# CONFIG_SENSORS_MAX197 is not set
# CONFIG_SENSORS_MAX31730 is not set
# CONFIG_SENSORS_MAX6620 is not set
# CONFIG_SENSORS_MAX6621 is not set
# CONFIG_SENSORS_MAX6639 is not set
# CONFIG_SENSORS_MAX6642 is not set
# CONFIG_SENSORS_MAX6650 is not set
# CONFIG_SENSORS_MAX6697 is not set
# CONFIG_SENSORS_MAX31790 is not set
# CONFIG_SENSORS_MCP3021 is not set
# CONFIG_SENSORS_TC654 is not set
# CONFIG_SENSORS_TPS23861 is not set
# CONFIG_SENSORS_MR75203 is not set
# CONFIG_SENSORS_LM63 is not set
# CONFIG_SENSORS_LM73 is not set
# CONFIG_SENSORS_LM75 is not set
# CONFIG_SENSORS_LM77 is not set
# CONFIG_SENSORS_LM78 is not set
# CONFIG_SENSORS_LM80 is not set
# CONFIG_SENSORS_LM83 is not set
# CONFIG_SENSORS_LM85 is not set
# CONFIG_SENSORS_LM87 is not set
# CONFIG_SENSORS_LM90 is not set
# CONFIG_SENSORS_LM92 is not set
# CONFIG_SENSORS_LM93 is not set
# CONFIG_SENSORS_LM95234 is not set
# CONFIG_SENSORS_LM95241 is not set
# CONFIG_SENSORS_LM95245 is not set
# CONFIG_SENSORS_PC87360 is not set
# CONFIG_SENSORS_PC87427 is not set
# CONFIG_SENSORS_NTC_THERMISTOR is not set
# CONFIG_SENSORS_NCT6683 is not set
# CONFIG_SENSORS_NCT6775 is not set
# CONFIG_SENSORS_NCT7802 is not set
# CONFIG_SENSORS_NCT7904 is not set
# CONFIG_SENSORS_NPCM7XX is not set
# CONFIG_SENSORS_NZXT_KRAKEN2 is not set
# CONFIG_SENSORS_PCF8591 is not set
# CONFIG_PMBUS is not set
# CONFIG_SENSORS_SBTSI is not set
# CONFIG_SENSORS_SBRMI is not set
# CONFIG_SENSORS_SHT21 is not set
# CONFIG_SENSORS_SHT3x is not set
# CONFIG_SENSORS_SHT4x is not set
# CONFIG_SENSORS_SHTC1 is not set
# CONFIG_SENSORS_SIS5595 is not set
# CONFIG_SENSORS_DME1737 is not set
# CONFIG_SENSORS_EMC1403 is not set
# CONFIG_SENSORS_EMC2103 is not set
# CONFIG_SENSORS_EMC6W201 is not set
# CONFIG_SENSORS_SMSC47M1 is not set
# CONFIG_SENSORS_SMSC47M192 is not set
# CONFIG_SENSORS_SMSC47B397 is not set
# CONFIG_SENSORS_SCH5627 is not set
# CONFIG_SENSORS_SCH5636 is not set
# CONFIG_SENSORS_STTS751 is not set
# CONFIG_SENSORS_SMM665 is not set
# CONFIG_SENSORS_ADC128D818 is not set
# CONFIG_SENSORS_ADS7828 is not set
# CONFIG_SENSORS_AMC6821 is not set
# CONFIG_SENSORS_INA209 is not set
# CONFIG_SENSORS_INA2XX is not set
# CONFIG_SENSORS_INA3221 is not set
# CONFIG_SENSORS_TC74 is not set
# CONFIG_SENSORS_THMC50 is not set
# CONFIG_SENSORS_TMP102 is not set
# CONFIG_SENSORS_TMP103 is not set
# CONFIG_SENSORS_TMP108 is not set
# CONFIG_SENSORS_TMP401 is not set
# CONFIG_SENSORS_TMP421 is not set
# CONFIG_SENSORS_TMP513 is not set
# CONFIG_SENSORS_VIA_CPUTEMP is not set
# CONFIG_SENSORS_VIA686A is not set
# CONFIG_SENSORS_VT1211 is not set
# CONFIG_SENSORS_VT8231 is not set
# CONFIG_SENSORS_W83773G is not set
# CONFIG_SENSORS_W83781D is not set
# CONFIG_SENSORS_W83791D is not set
# CONFIG_SENSORS_W83792D is not set
# CONFIG_SENSORS_W83793 is not set
# CONFIG_SENSORS_W83795 is not set
# CONFIG_SENSORS_W83L785TS is not set
# CONFIG_SENSORS_W83L786NG is not set
# CONFIG_SENSORS_W83627HF is not set
# CONFIG_SENSORS_W83627EHF is not set
# CONFIG_SENSORS_XGENE is not set
#
# ACPI drivers
#
# CONFIG_SENSORS_ACPI_POWER is not set
# CONFIG_SENSORS_ATK0110 is not set
CONFIG_THERMAL=y
# CONFIG_THERMAL_NETLINK is not set
# CONFIG_THERMAL_STATISTICS is not set
CONFIG_THERMAL_EMERGENCY_POWEROFF_DELAY_MS=0
CONFIG_THERMAL_HWMON=y
CONFIG_THERMAL_WRITABLE_TRIPS=y
CONFIG_THERMAL_DEFAULT_GOV_STEP_WISE=y
# CONFIG_THERMAL_DEFAULT_GOV_FAIR_SHARE is not set
# CONFIG_THERMAL_DEFAULT_GOV_USER_SPACE is not set
# CONFIG_THERMAL_GOV_FAIR_SHARE is not set
CONFIG_THERMAL_GOV_STEP_WISE=y
# CONFIG_THERMAL_GOV_BANG_BANG is not set
CONFIG_THERMAL_GOV_USER_SPACE=y
# CONFIG_THERMAL_EMULATION is not set
#
# Intel thermal drivers
#
# CONFIG_INTEL_POWERCLAMP is not set
CONFIG_X86_THERMAL_VECTOR=y
CONFIG_X86_PKG_TEMP_THERMAL=m
# CONFIG_INTEL_SOC_DTS_THERMAL is not set
#
# ACPI INT340X thermal drivers
#
# CONFIG_INT340X_THERMAL is not set
# end of ACPI INT340X thermal drivers
# CONFIG_INTEL_PCH_THERMAL is not set
# CONFIG_INTEL_TCC_COOLING is not set
# CONFIG_INTEL_MENLOW is not set
# end of Intel thermal drivers
CONFIG_WATCHDOG=y
# CONFIG_WATCHDOG_CORE is not set
# CONFIG_WATCHDOG_NOWAYOUT is not set
CONFIG_WATCHDOG_HANDLE_BOOT_ENABLED=y
CONFIG_WATCHDOG_OPEN_TIMEOUT=0
# CONFIG_WATCHDOG_SYSFS is not set
# CONFIG_WATCHDOG_HRTIMER_PRETIMEOUT is not set
#
# Watchdog Pretimeout Governors
#
#
# Watchdog Device Drivers
#
# CONFIG_SOFT_WATCHDOG is not set
# CONFIG_WDAT_WDT is not set
# CONFIG_XILINX_WATCHDOG is not set
# CONFIG_ZIIRAVE_WATCHDOG is not set
# CONFIG_CADENCE_WATCHDOG is not set
# CONFIG_DW_WATCHDOG is not set
# CONFIG_MAX63XX_WATCHDOG is not set
# CONFIG_ACQUIRE_WDT is not set
# CONFIG_ADVANTECH_WDT is not set
# CONFIG_ALIM1535_WDT is not set
# CONFIG_ALIM7101_WDT is not set
# CONFIG_EBC_C384_WDT is not set
# CONFIG_F71808E_WDT is not set
# CONFIG_SP5100_TCO is not set
# CONFIG_SBC_FITPC2_WATCHDOG is not set
# CONFIG_EUROTECH_WDT is not set
# CONFIG_IB700_WDT is not set
# CONFIG_IBMASR is not set
# CONFIG_WAFER_WDT is not set
# CONFIG_I6300ESB_WDT is not set
# CONFIG_IE6XX_WDT is not set
# CONFIG_ITCO_WDT is not set
# CONFIG_IT8712F_WDT is not set
# CONFIG_IT87_WDT is not set
# CONFIG_HP_WATCHDOG is not set
# CONFIG_SC1200_WDT is not set
# CONFIG_PC87413_WDT is not set
# CONFIG_NV_TCO is not set
# CONFIG_60XX_WDT is not set
# CONFIG_CPU5_WDT is not set
# CONFIG_SMSC_SCH311X_WDT is not set
# CONFIG_SMSC37B787_WDT is not set
# CONFIG_TQMX86_WDT is not set
# CONFIG_VIA_WDT is not set
# CONFIG_W83627HF_WDT is not set
# CONFIG_W83877F_WDT is not set
# CONFIG_W83977F_WDT is not set
# CONFIG_MACHZ_WDT is not set
# CONFIG_SBC_EPX_C3_WATCHDOG is not set
# CONFIG_NI903X_WDT is not set
# CONFIG_NIC7018_WDT is not set
#
# PCI-based Watchdog Cards
#
# CONFIG_PCIPCWATCHDOG is not set
# CONFIG_WDTPCI is not set
#
# USB-based Watchdog Cards
#
# CONFIG_USBPCWATCHDOG is not set
CONFIG_SSB_POSSIBLE=y
# CONFIG_SSB is not set
CONFIG_BCMA_POSSIBLE=y
# CONFIG_BCMA is not set
#
# Multifunction device drivers
#
# CONFIG_MFD_AS3711 is not set
# CONFIG_PMIC_ADP5520 is not set
# CONFIG_MFD_BCM590XX is not set
# CONFIG_MFD_BD9571MWV is not set
# CONFIG_MFD_AXP20X_I2C is not set
# CONFIG_MFD_MADERA is not set
# CONFIG_PMIC_DA903X is not set
# CONFIG_MFD_DA9052_I2C is not set
# CONFIG_MFD_DA9055 is not set
# CONFIG_MFD_DA9062 is not set
# CONFIG_MFD_DA9063 is not set
# CONFIG_MFD_DA9150 is not set
# CONFIG_MFD_DLN2 is not set
# CONFIG_MFD_MC13XXX_I2C is not set
# CONFIG_MFD_MP2629 is not set
# CONFIG_HTC_PASIC3 is not set
# CONFIG_MFD_INTEL_QUARK_I2C_GPIO is not set
# CONFIG_LPC_ICH is not set
# CONFIG_LPC_SCH is not set
# CONFIG_MFD_INTEL_LPSS_ACPI is not set
# CONFIG_MFD_INTEL_LPSS_PCI is not set
# CONFIG_MFD_INTEL_PMC_BXT is not set
# CONFIG_MFD_INTEL_PMT is not set
# CONFIG_MFD_IQS62X is not set
# CONFIG_MFD_JANZ_CMODIO is not set
# CONFIG_MFD_KEMPLD is not set
# CONFIG_MFD_88PM800 is not set
# CONFIG_MFD_88PM805 is not set
# CONFIG_MFD_88PM860X is not set
# CONFIG_MFD_MAX14577 is not set
# CONFIG_MFD_MAX77693 is not set
# CONFIG_MFD_MAX77843 is not set
# CONFIG_MFD_MAX8907 is not set
# CONFIG_MFD_MAX8925 is not set
# CONFIG_MFD_MAX8997 is not set
# CONFIG_MFD_MAX8998 is not set
# CONFIG_MFD_MT6360 is not set
# CONFIG_MFD_MT6397 is not set
# CONFIG_MFD_MENF21BMC is not set
# CONFIG_MFD_VIPERBOARD is not set
# CONFIG_MFD_RETU is not set
# CONFIG_MFD_PCF50633 is not set
# CONFIG_MFD_RDC321X is not set
# CONFIG_MFD_RT4831 is not set
# CONFIG_MFD_RT5033 is not set
# CONFIG_MFD_RC5T583 is not set
# CONFIG_MFD_SI476X_CORE is not set
# CONFIG_MFD_SM501 is not set
# CONFIG_MFD_SKY81452 is not set
# CONFIG_MFD_SYSCON is not set
# CONFIG_MFD_TI_AM335X_TSCADC is not set
# CONFIG_MFD_LP3943 is not set
# CONFIG_MFD_LP8788 is not set
# CONFIG_MFD_TI_LMU is not set
# CONFIG_MFD_PALMAS is not set
# CONFIG_TPS6105X is not set
# CONFIG_TPS6507X is not set
# CONFIG_MFD_TPS65086 is not set
# CONFIG_MFD_TPS65090 is not set
# CONFIG_MFD_TI_LP873X is not set
# CONFIG_MFD_TPS6586X is not set
# CONFIG_MFD_TPS65912_I2C is not set
# CONFIG_TWL4030_CORE is not set
# CONFIG_TWL6040_CORE is not set
# CONFIG_MFD_WL1273_CORE is not set
# CONFIG_MFD_LM3533 is not set
# CONFIG_MFD_TQMX86 is not set
# CONFIG_MFD_VX855 is not set
# CONFIG_MFD_ARIZONA_I2C is not set
# CONFIG_MFD_WM8400 is not set
# CONFIG_MFD_WM831X_I2C is not set
# CONFIG_MFD_WM8350_I2C is not set
# CONFIG_MFD_WM8994 is not set
# CONFIG_MFD_ATC260X_I2C is not set
# end of Multifunction device drivers
# CONFIG_REGULATOR is not set
# CONFIG_RC_CORE is not set
#
# CEC support
#
# CONFIG_MEDIA_CEC_SUPPORT is not set
# end of CEC support
# CONFIG_MEDIA_SUPPORT is not set
#
# Graphics support
#
CONFIG_AGP=y
CONFIG_AGP_AMD64=y
CONFIG_AGP_INTEL=y
# CONFIG_AGP_SIS is not set
# CONFIG_AGP_VIA is not set
CONFIG_INTEL_GTT=y
CONFIG_VGA_ARB=y
CONFIG_VGA_ARB_MAX_GPUS=16
# CONFIG_VGA_SWITCHEROO is not set
CONFIG_DRM=y
CONFIG_DRM_MIPI_DSI=y
# CONFIG_DRM_DP_AUX_CHARDEV is not set
# CONFIG_DRM_DEBUG_MM is not set
# CONFIG_DRM_DEBUG_SELFTEST is not set
CONFIG_DRM_KMS_HELPER=y
# CONFIG_DRM_DEBUG_DP_MST_TOPOLOGY_REFS is not set
# CONFIG_DRM_DEBUG_MODESET_LOCK is not set
# CONFIG_DRM_LOAD_EDID_FIRMWARE is not set
# CONFIG_DRM_DP_CEC is not set
CONFIG_DRM_TTM=y
CONFIG_DRM_GEM_SHMEM_HELPER=y
#
# I2C encoder or helper chips
#
# CONFIG_DRM_I2C_CH7006 is not set
# CONFIG_DRM_I2C_SIL164 is not set
# CONFIG_DRM_I2C_NXP_TDA998X is not set
# CONFIG_DRM_I2C_NXP_TDA9950 is not set
# end of I2C encoder or helper chips
#
# ARM devices
#
# end of ARM devices
# CONFIG_DRM_RADEON is not set
# CONFIG_DRM_AMDGPU is not set
# CONFIG_DRM_NOUVEAU is not set
CONFIG_DRM_I915=y
CONFIG_DRM_I915_FORCE_PROBE=""
CONFIG_DRM_I915_CAPTURE_ERROR=y
CONFIG_DRM_I915_COMPRESS_ERROR=y
CONFIG_DRM_I915_USERPTR=y
# CONFIG_DRM_I915_GVT is not set
#
# drm/i915 Debugging
#
# CONFIG_DRM_I915_WERROR is not set
# CONFIG_DRM_I915_DEBUG is not set
# CONFIG_DRM_I915_DEBUG_MMIO is not set
# CONFIG_DRM_I915_SW_FENCE_DEBUG_OBJECTS is not set
# CONFIG_DRM_I915_SW_FENCE_CHECK_DAG is not set
# CONFIG_DRM_I915_DEBUG_GUC is not set
# CONFIG_DRM_I915_SELFTEST is not set
# CONFIG_DRM_I915_LOW_LEVEL_TRACEPOINTS is not set
# CONFIG_DRM_I915_DEBUG_VBLANK_EVADE is not set
# CONFIG_DRM_I915_DEBUG_RUNTIME_PM is not set
# end of drm/i915 Debugging
#
# drm/i915 Profile Guided Optimisation
#
CONFIG_DRM_I915_REQUEST_TIMEOUT=20000
CONFIG_DRM_I915_FENCE_TIMEOUT=10000
CONFIG_DRM_I915_USERFAULT_AUTOSUSPEND=250
CONFIG_DRM_I915_HEARTBEAT_INTERVAL=2500
CONFIG_DRM_I915_PREEMPT_TIMEOUT=640
CONFIG_DRM_I915_MAX_REQUEST_BUSYWAIT=8000
CONFIG_DRM_I915_STOP_TIMEOUT=100
CONFIG_DRM_I915_TIMESLICE_DURATION=1
# end of drm/i915 Profile Guided Optimisation
# CONFIG_DRM_VGEM is not set
# CONFIG_DRM_VKMS is not set
# CONFIG_DRM_VMWGFX is not set
# CONFIG_DRM_GMA500 is not set
# CONFIG_DRM_UDL is not set
# CONFIG_DRM_AST is not set
# CONFIG_DRM_MGAG200 is not set
# CONFIG_DRM_QXL is not set
CONFIG_DRM_VIRTIO_GPU=y
CONFIG_DRM_PANEL=y
#
# Display Panels
#
# CONFIG_DRM_PANEL_RASPBERRYPI_TOUCHSCREEN is not set
# end of Display Panels
CONFIG_DRM_BRIDGE=y
CONFIG_DRM_PANEL_BRIDGE=y
#
# Display Interface Bridges
#
# CONFIG_DRM_ANALOGIX_ANX78XX is not set
# end of Display Interface Bridges
# CONFIG_DRM_ETNAVIV is not set
# CONFIG_DRM_BOCHS is not set
# CONFIG_DRM_CIRRUS_QEMU is not set
# CONFIG_DRM_GM12U320 is not set
# CONFIG_DRM_SIMPLEDRM is not set
# CONFIG_DRM_VBOXVIDEO is not set
# CONFIG_DRM_GUD is not set
# CONFIG_DRM_LEGACY is not set
CONFIG_DRM_PANEL_ORIENTATION_QUIRKS=y
#
# Frame buffer Devices
#
CONFIG_FB_CMDLINE=y
# CONFIG_FB is not set
# end of Frame buffer Devices
#
# Backlight & LCD device support
#
# CONFIG_LCD_CLASS_DEVICE is not set
CONFIG_BACKLIGHT_CLASS_DEVICE=y
# CONFIG_BACKLIGHT_APPLE is not set
# CONFIG_BACKLIGHT_QCOM_WLED is not set
# CONFIG_BACKLIGHT_SAHARA is not set
# CONFIG_BACKLIGHT_ADP8860 is not set
# CONFIG_BACKLIGHT_ADP8870 is not set
# CONFIG_BACKLIGHT_LM3639 is not set
# CONFIG_BACKLIGHT_LV5207LP is not set
# CONFIG_BACKLIGHT_BD6107 is not set
# CONFIG_BACKLIGHT_ARCXCNN is not set
# end of Backlight & LCD device support
CONFIG_HDMI=y
#
# Console display driver support
#
CONFIG_VGA_CONSOLE=y
CONFIG_DUMMY_CONSOLE=y
CONFIG_DUMMY_CONSOLE_COLUMNS=80
CONFIG_DUMMY_CONSOLE_ROWS=25
# end of Console display driver support
# end of Graphics support
CONFIG_SOUND=y
CONFIG_SND=y
CONFIG_SND_TIMER=y
CONFIG_SND_PCM=y
CONFIG_SND_HWDEP=y
CONFIG_SND_SEQ_DEVICE=y
CONFIG_SND_JACK=y
CONFIG_SND_JACK_INPUT_DEV=y
# CONFIG_SND_OSSEMUL is not set
CONFIG_SND_PCM_TIMER=y
CONFIG_SND_HRTIMER=y
# CONFIG_SND_DYNAMIC_MINORS is not set
CONFIG_SND_SUPPORT_OLD_API=y
CONFIG_SND_PROC_FS=y
CONFIG_SND_VERBOSE_PROCFS=y
# CONFIG_SND_VERBOSE_PRINTK is not set
# CONFIG_SND_DEBUG is not set
CONFIG_SND_VMASTER=y
CONFIG_SND_DMA_SGBUF=y
CONFIG_SND_SEQUENCER=y
CONFIG_SND_SEQ_DUMMY=y
CONFIG_SND_SEQ_HRTIMER_DEFAULT=y
CONFIG_SND_DRIVERS=y
# CONFIG_SND_PCSP is not set
# CONFIG_SND_DUMMY is not set
# CONFIG_SND_ALOOP is not set
# CONFIG_SND_VIRMIDI is not set
# CONFIG_SND_MTPAV is not set
# CONFIG_SND_SERIAL_U16550 is not set
# CONFIG_SND_MPU401 is not set
CONFIG_SND_PCI=y
# CONFIG_SND_AD1889 is not set
# CONFIG_SND_ALS300 is not set
# CONFIG_SND_ALS4000 is not set
# CONFIG_SND_ALI5451 is not set
# CONFIG_SND_ASIHPI is not set
# CONFIG_SND_ATIIXP is not set
# CONFIG_SND_ATIIXP_MODEM is not set
# CONFIG_SND_AU8810 is not set
# CONFIG_SND_AU8820 is not set
# CONFIG_SND_AU8830 is not set
# CONFIG_SND_AW2 is not set
# CONFIG_SND_AZT3328 is not set
# CONFIG_SND_BT87X is not set
# CONFIG_SND_CA0106 is not set
# CONFIG_SND_CMIPCI is not set
# CONFIG_SND_OXYGEN is not set
# CONFIG_SND_CS4281 is not set
# CONFIG_SND_CS46XX is not set
# CONFIG_SND_CTXFI is not set
# CONFIG_SND_DARLA20 is not set
# CONFIG_SND_GINA20 is not set
# CONFIG_SND_LAYLA20 is not set
# CONFIG_SND_DARLA24 is not set
# CONFIG_SND_GINA24 is not set
# CONFIG_SND_LAYLA24 is not set
# CONFIG_SND_MONA is not set
# CONFIG_SND_MIA is not set
# CONFIG_SND_ECHO3G is not set
# CONFIG_SND_INDIGO is not set
# CONFIG_SND_INDIGOIO is not set
# CONFIG_SND_INDIGODJ is not set
# CONFIG_SND_INDIGOIOX is not set
# CONFIG_SND_INDIGODJX is not set
# CONFIG_SND_EMU10K1 is not set
# CONFIG_SND_EMU10K1X is not set
# CONFIG_SND_ENS1370 is not set
# CONFIG_SND_ENS1371 is not set
# CONFIG_SND_ES1938 is not set
# CONFIG_SND_ES1968 is not set
# CONFIG_SND_FM801 is not set
# CONFIG_SND_HDSP is not set
# CONFIG_SND_HDSPM is not set
# CONFIG_SND_ICE1712 is not set
# CONFIG_SND_ICE1724 is not set
# CONFIG_SND_INTEL8X0 is not set
# CONFIG_SND_INTEL8X0M is not set
# CONFIG_SND_KORG1212 is not set
# CONFIG_SND_LOLA is not set
# CONFIG_SND_LX6464ES is not set
# CONFIG_SND_MAESTRO3 is not set
# CONFIG_SND_MIXART is not set
# CONFIG_SND_NM256 is not set
# CONFIG_SND_PCXHR is not set
# CONFIG_SND_RIPTIDE is not set
# CONFIG_SND_RME32 is not set
# CONFIG_SND_RME96 is not set
# CONFIG_SND_RME9652 is not set
# CONFIG_SND_SE6X is not set
# CONFIG_SND_SONICVIBES is not set
# CONFIG_SND_TRIDENT is not set
# CONFIG_SND_VIA82XX is not set
# CONFIG_SND_VIA82XX_MODEM is not set
# CONFIG_SND_VIRTUOSO is not set
# CONFIG_SND_VX222 is not set
# CONFIG_SND_YMFPCI is not set
#
# HD-Audio
#
CONFIG_SND_HDA=y
CONFIG_SND_HDA_INTEL=y
CONFIG_SND_HDA_HWDEP=y
# CONFIG_SND_HDA_RECONFIG is not set
# CONFIG_SND_HDA_INPUT_BEEP is not set
# CONFIG_SND_HDA_PATCH_LOADER is not set
# CONFIG_SND_HDA_CODEC_REALTEK is not set
# CONFIG_SND_HDA_CODEC_ANALOG is not set
# CONFIG_SND_HDA_CODEC_SIGMATEL is not set
# CONFIG_SND_HDA_CODEC_VIA is not set
# CONFIG_SND_HDA_CODEC_HDMI is not set
# CONFIG_SND_HDA_CODEC_CIRRUS is not set
# CONFIG_SND_HDA_CODEC_CS8409 is not set
# CONFIG_SND_HDA_CODEC_CONEXANT is not set
# CONFIG_SND_HDA_CODEC_CA0110 is not set
# CONFIG_SND_HDA_CODEC_CA0132 is not set
# CONFIG_SND_HDA_CODEC_CMEDIA is not set
# CONFIG_SND_HDA_CODEC_SI3054 is not set
# CONFIG_SND_HDA_GENERIC is not set
CONFIG_SND_HDA_POWER_SAVE_DEFAULT=0
# CONFIG_SND_HDA_INTEL_HDMI_SILENT_STREAM is not set
# end of HD-Audio
CONFIG_SND_HDA_CORE=y
CONFIG_SND_HDA_COMPONENT=y
CONFIG_SND_HDA_I915=y
CONFIG_SND_HDA_PREALLOC_SIZE=0
CONFIG_SND_INTEL_NHLT=y
CONFIG_SND_INTEL_DSP_CONFIG=y
CONFIG_SND_INTEL_SOUNDWIRE_ACPI=y
CONFIG_SND_USB=y
# CONFIG_SND_USB_AUDIO is not set
# CONFIG_SND_USB_UA101 is not set
# CONFIG_SND_USB_USX2Y is not set
# CONFIG_SND_USB_CAIAQ is not set
# CONFIG_SND_USB_US122L is not set
# CONFIG_SND_USB_6FIRE is not set
# CONFIG_SND_USB_HIFACE is not set
# CONFIG_SND_BCD2000 is not set
# CONFIG_SND_USB_POD is not set
# CONFIG_SND_USB_PODHD is not set
# CONFIG_SND_USB_TONEPORT is not set
# CONFIG_SND_USB_VARIAX is not set
CONFIG_SND_PCMCIA=y
# CONFIG_SND_VXPOCKET is not set
# CONFIG_SND_PDAUDIOCF is not set
# CONFIG_SND_SOC is not set
CONFIG_SND_X86=y
# CONFIG_HDMI_LPE_AUDIO is not set
# CONFIG_SND_VIRTIO is not set
#
# HID support
#
CONFIG_HID=y
# CONFIG_HID_BATTERY_STRENGTH is not set
CONFIG_HIDRAW=y
# CONFIG_UHID is not set
CONFIG_HID_GENERIC=y
#
# Special HID drivers
#
CONFIG_HID_A4TECH=y
# CONFIG_HID_ACCUTOUCH is not set
# CONFIG_HID_ACRUX is not set
CONFIG_HID_APPLE=y
# CONFIG_HID_APPLEIR is not set
# CONFIG_HID_ASUS is not set
# CONFIG_HID_AUREAL is not set
CONFIG_HID_BELKIN=y
# CONFIG_HID_BETOP_FF is not set
# CONFIG_HID_BIGBEN_FF is not set
CONFIG_HID_CHERRY=y
CONFIG_HID_CHICONY=y
# CONFIG_HID_CORSAIR is not set
# CONFIG_HID_COUGAR is not set
# CONFIG_HID_MACALLY is not set
# CONFIG_HID_PRODIKEYS is not set
# CONFIG_HID_CMEDIA is not set
# CONFIG_HID_CREATIVE_SB0540 is not set
CONFIG_HID_CYPRESS=y
# CONFIG_HID_DRAGONRISE is not set
# CONFIG_HID_EMS_FF is not set
# CONFIG_HID_ELAN is not set
# CONFIG_HID_ELECOM is not set
# CONFIG_HID_ELO is not set
CONFIG_HID_EZKEY=y
# CONFIG_HID_FT260 is not set
# CONFIG_HID_GEMBIRD is not set
# CONFIG_HID_GFRM is not set
# CONFIG_HID_GLORIOUS is not set
# CONFIG_HID_HOLTEK is not set
# CONFIG_HID_VIVALDI is not set
# CONFIG_HID_GT683R is not set
# CONFIG_HID_KEYTOUCH is not set
# CONFIG_HID_KYE is not set
# CONFIG_HID_UCLOGIC is not set
# CONFIG_HID_WALTOP is not set
# CONFIG_HID_VIEWSONIC is not set
# CONFIG_HID_XIAOMI is not set
CONFIG_HID_GYRATION=y
# CONFIG_HID_ICADE is not set
CONFIG_HID_ITE=y
# CONFIG_HID_JABRA is not set
# CONFIG_HID_TWINHAN is not set
CONFIG_HID_KENSINGTON=y
# CONFIG_HID_LCPOWER is not set
# CONFIG_HID_LED is not set
# CONFIG_HID_LENOVO is not set
CONFIG_HID_LOGITECH=y
# CONFIG_HID_LOGITECH_DJ is not set
# CONFIG_HID_LOGITECH_HIDPP is not set
CONFIG_LOGITECH_FF=y
# CONFIG_LOGIRUMBLEPAD2_FF is not set
# CONFIG_LOGIG940_FF is not set
CONFIG_LOGIWHEELS_FF=y
# CONFIG_HID_MAGICMOUSE is not set
# CONFIG_HID_MALTRON is not set
# CONFIG_HID_MAYFLASH is not set
CONFIG_HID_REDRAGON=y
CONFIG_HID_MICROSOFT=y
CONFIG_HID_MONTEREY=y
# CONFIG_HID_MULTITOUCH is not set
# CONFIG_HID_NINTENDO is not set
# CONFIG_HID_NTI is not set
CONFIG_HID_NTRIG=y
# CONFIG_HID_ORTEK is not set
CONFIG_HID_PANTHERLORD=y
CONFIG_PANTHERLORD_FF=y
# CONFIG_HID_PENMOUNT is not set
CONFIG_HID_PETALYNX=y
# CONFIG_HID_PICOLCD is not set
# CONFIG_HID_PLANTRONICS is not set
# CONFIG_HID_PRIMAX is not set
# CONFIG_HID_RETRODE is not set
# CONFIG_HID_ROCCAT is not set
# CONFIG_HID_SAITEK is not set
CONFIG_HID_SAMSUNG=y
# CONFIG_HID_SEMITEK is not set
CONFIG_HID_SONY=y
# CONFIG_SONY_FF is not set
# CONFIG_HID_SPEEDLINK is not set
# CONFIG_HID_STEAM is not set
# CONFIG_HID_STEELSERIES is not set
CONFIG_HID_SUNPLUS=y
# CONFIG_HID_RMI is not set
# CONFIG_HID_GREENASIA is not set
# CONFIG_HID_SMARTJOYPLUS is not set
# CONFIG_HID_TIVO is not set
CONFIG_HID_TOPSEED=y
# CONFIG_HID_THINGM is not set
# CONFIG_HID_THRUSTMASTER is not set
# CONFIG_HID_UDRAW_PS3 is not set
# CONFIG_HID_U2FZERO is not set
# CONFIG_HID_WACOM is not set
# CONFIG_HID_WIIMOTE is not set
# CONFIG_HID_XINMO is not set
# CONFIG_HID_ZEROPLUS is not set
# CONFIG_HID_ZYDACRON is not set
# CONFIG_HID_SENSOR_HUB is not set
# CONFIG_HID_ALPS is not set
# end of Special HID drivers
#
# USB HID support
#
CONFIG_USB_HID=y
CONFIG_HID_PID=y
CONFIG_USB_HIDDEV=y
# end of USB HID support
#
# I2C HID support
#
# CONFIG_I2C_HID_ACPI is not set
# end of I2C HID support
#
# Intel ISH HID support
#
# CONFIG_INTEL_ISH_HID is not set
# end of Intel ISH HID support
#
# AMD SFH HID Support
#
# CONFIG_AMD_SFH_HID is not set
# end of AMD SFH HID Support
# end of HID support
CONFIG_USB_OHCI_LITTLE_ENDIAN=y
CONFIG_USB_SUPPORT=y
CONFIG_USB_COMMON=y
# CONFIG_USB_LED_TRIG is not set
# CONFIG_USB_ULPI_BUS is not set
CONFIG_USB_ARCH_HAS_HCD=y
CONFIG_USB=y
CONFIG_USB_PCI=y
CONFIG_USB_ANNOUNCE_NEW_DEVICES=y
#
# Miscellaneous USB options
#
CONFIG_USB_DEFAULT_PERSIST=y
# CONFIG_USB_FEW_INIT_RETRIES is not set
# CONFIG_USB_DYNAMIC_MINORS is not set
# CONFIG_USB_OTG is not set
# CONFIG_USB_OTG_PRODUCTLIST is not set
# CONFIG_USB_OTG_DISABLE_EXTERNAL_HUB is not set
# CONFIG_USB_LEDS_TRIGGER_USBPORT is not set
CONFIG_USB_AUTOSUSPEND_DELAY=2
CONFIG_USB_MON=y
#
# USB Host Controller Drivers
#
# CONFIG_USB_C67X00_HCD is not set
CONFIG_USB_XHCI_HCD=y
# CONFIG_USB_XHCI_DBGCAP is not set
CONFIG_USB_XHCI_PCI=y
# CONFIG_USB_XHCI_PCI_RENESAS is not set
# CONFIG_USB_XHCI_PLATFORM is not set
CONFIG_USB_EHCI_HCD=y
# CONFIG_USB_EHCI_ROOT_HUB_TT is not set
CONFIG_USB_EHCI_TT_NEWSCHED=y
CONFIG_USB_EHCI_PCI=y
# CONFIG_USB_EHCI_FSL is not set
# CONFIG_USB_EHCI_HCD_PLATFORM is not set
# CONFIG_USB_OXU210HP_HCD is not set
# CONFIG_USB_ISP116X_HCD is not set
# CONFIG_USB_FOTG210_HCD is not set
CONFIG_USB_OHCI_HCD=y
CONFIG_USB_OHCI_HCD_PCI=y
# CONFIG_USB_OHCI_HCD_PLATFORM is not set
CONFIG_USB_UHCI_HCD=y
# CONFIG_USB_SL811_HCD is not set
# CONFIG_USB_R8A66597_HCD is not set
# CONFIG_USB_HCD_TEST_MODE is not set
#
# USB Device Class drivers
#
# CONFIG_USB_ACM is not set
CONFIG_USB_PRINTER=y
# CONFIG_USB_WDM is not set
# CONFIG_USB_TMC is not set
#
# NOTE: USB_STORAGE depends on SCSI but BLK_DEV_SD may
#
#
# also be needed; see USB_STORAGE Help for more info
#
CONFIG_USB_STORAGE=y
# CONFIG_USB_STORAGE_DEBUG is not set
# CONFIG_USB_STORAGE_REALTEK is not set
# CONFIG_USB_STORAGE_DATAFAB is not set
# CONFIG_USB_STORAGE_FREECOM is not set
# CONFIG_USB_STORAGE_ISD200 is not set
# CONFIG_USB_STORAGE_USBAT is not set
# CONFIG_USB_STORAGE_SDDR09 is not set
# CONFIG_USB_STORAGE_SDDR55 is not set
# CONFIG_USB_STORAGE_JUMPSHOT is not set
# CONFIG_USB_STORAGE_ALAUDA is not set
# CONFIG_USB_STORAGE_ONETOUCH is not set
# CONFIG_USB_STORAGE_KARMA is not set
# CONFIG_USB_STORAGE_CYPRESS_ATACB is not set
# CONFIG_USB_STORAGE_ENE_UB6250 is not set
# CONFIG_USB_UAS is not set
#
# USB Imaging devices
#
# CONFIG_USB_MDC800 is not set
# CONFIG_USB_MICROTEK is not set
# CONFIG_USBIP_CORE is not set
# CONFIG_USB_CDNS_SUPPORT is not set
# CONFIG_USB_MUSB_HDRC is not set
# CONFIG_USB_DWC3 is not set
# CONFIG_USB_DWC2 is not set
# CONFIG_USB_CHIPIDEA is not set
# CONFIG_USB_ISP1760 is not set
#
# USB port drivers
#
# CONFIG_USB_SERIAL is not set
#
# USB Miscellaneous drivers
#
# CONFIG_USB_EMI62 is not set
# CONFIG_USB_EMI26 is not set
# CONFIG_USB_ADUTUX is not set
# CONFIG_USB_SEVSEG is not set
# CONFIG_USB_LEGOTOWER is not set
# CONFIG_USB_LCD is not set
# CONFIG_USB_CYPRESS_CY7C63 is not set
# CONFIG_USB_CYTHERM is not set
# CONFIG_USB_IDMOUSE is not set
# CONFIG_USB_FTDI_ELAN is not set
# CONFIG_USB_APPLEDISPLAY is not set
# CONFIG_APPLE_MFI_FASTCHARGE is not set
# CONFIG_USB_SISUSBVGA is not set
# CONFIG_USB_LD is not set
# CONFIG_USB_TRANCEVIBRATOR is not set
# CONFIG_USB_IOWARRIOR is not set
# CONFIG_USB_TEST is not set
# CONFIG_USB_EHSET_TEST_FIXTURE is not set
# CONFIG_USB_ISIGHTFW is not set
# CONFIG_USB_YUREX is not set
# CONFIG_USB_EZUSB_FX2 is not set
# CONFIG_USB_HUB_USB251XB is not set
# CONFIG_USB_HSIC_USB3503 is not set
# CONFIG_USB_HSIC_USB4604 is not set
# CONFIG_USB_LINK_LAYER_TEST is not set
# CONFIG_USB_CHAOSKEY is not set
#
# USB Physical Layer drivers
#
# CONFIG_NOP_USB_XCEIV is not set
# CONFIG_USB_ISP1301 is not set
# end of USB Physical Layer drivers
# CONFIG_USB_GADGET is not set
# CONFIG_TYPEC is not set
# CONFIG_USB_ROLE_SWITCH is not set
# CONFIG_MMC is not set
# CONFIG_MEMSTICK is not set
CONFIG_NEW_LEDS=y
CONFIG_LEDS_CLASS=y
# CONFIG_LEDS_CLASS_FLASH is not set
# CONFIG_LEDS_CLASS_MULTICOLOR is not set
# CONFIG_LEDS_BRIGHTNESS_HW_CHANGED is not set
#
# LED drivers
#
# CONFIG_LEDS_APU is not set
# CONFIG_LEDS_LM3530 is not set
# CONFIG_LEDS_LM3532 is not set
# CONFIG_LEDS_LM3642 is not set
# CONFIG_LEDS_PCA9532 is not set
# CONFIG_LEDS_LP3944 is not set
# CONFIG_LEDS_CLEVO_MAIL is not set
# CONFIG_LEDS_PCA955X is not set
# CONFIG_LEDS_PCA963X is not set
# CONFIG_LEDS_BD2802 is not set
# CONFIG_LEDS_INTEL_SS4200 is not set
# CONFIG_LEDS_TCA6507 is not set
# CONFIG_LEDS_TLC591XX is not set
# CONFIG_LEDS_LM355x is not set
#
# LED driver for blink(1) USB RGB LED is under Special HID drivers (HID_THINGM)
#
# CONFIG_LEDS_BLINKM is not set
# CONFIG_LEDS_MLXCPLD is not set
# CONFIG_LEDS_MLXREG is not set
# CONFIG_LEDS_USER is not set
# CONFIG_LEDS_NIC78BX is not set
# CONFIG_LEDS_TI_LMU_COMMON is not set
#
# Flash and Torch LED drivers
#
#
# LED Triggers
#
CONFIG_LEDS_TRIGGERS=y
# CONFIG_LEDS_TRIGGER_TIMER is not set
# CONFIG_LEDS_TRIGGER_ONESHOT is not set
# CONFIG_LEDS_TRIGGER_DISK is not set
# CONFIG_LEDS_TRIGGER_HEARTBEAT is not set
# CONFIG_LEDS_TRIGGER_BACKLIGHT is not set
# CONFIG_LEDS_TRIGGER_CPU is not set
# CONFIG_LEDS_TRIGGER_ACTIVITY is not set
# CONFIG_LEDS_TRIGGER_DEFAULT_ON is not set
#
# iptables trigger is under Netfilter config (LED target)
#
# CONFIG_LEDS_TRIGGER_TRANSIENT is not set
# CONFIG_LEDS_TRIGGER_CAMERA is not set
# CONFIG_LEDS_TRIGGER_PANIC is not set
# CONFIG_LEDS_TRIGGER_NETDEV is not set
# CONFIG_LEDS_TRIGGER_PATTERN is not set
# CONFIG_LEDS_TRIGGER_AUDIO is not set
# CONFIG_LEDS_TRIGGER_TTY is not set
# CONFIG_ACCESSIBILITY is not set
# CONFIG_INFINIBAND is not set
CONFIG_EDAC_ATOMIC_SCRUB=y
CONFIG_EDAC_SUPPORT=y
CONFIG_RTC_LIB=y
CONFIG_RTC_MC146818_LIB=y
CONFIG_RTC_CLASS=y
# CONFIG_RTC_HCTOSYS is not set
CONFIG_RTC_SYSTOHC=y
CONFIG_RTC_SYSTOHC_DEVICE="rtc0"
# CONFIG_RTC_DEBUG is not set
# CONFIG_RTC_LIB_KUNIT_TEST is not set
CONFIG_RTC_NVMEM=y
#
# RTC interfaces
#
CONFIG_RTC_INTF_SYSFS=y
CONFIG_RTC_INTF_PROC=y
CONFIG_RTC_INTF_DEV=y
# CONFIG_RTC_INTF_DEV_UIE_EMUL is not set
# CONFIG_RTC_DRV_TEST is not set
#
# I2C RTC drivers
#
# CONFIG_RTC_DRV_ABB5ZES3 is not set
# CONFIG_RTC_DRV_ABEOZ9 is not set
# CONFIG_RTC_DRV_ABX80X is not set
# CONFIG_RTC_DRV_DS1307 is not set
# CONFIG_RTC_DRV_DS1374 is not set
# CONFIG_RTC_DRV_DS1672 is not set
# CONFIG_RTC_DRV_MAX6900 is not set
# CONFIG_RTC_DRV_RS5C372 is not set
# CONFIG_RTC_DRV_ISL1208 is not set
# CONFIG_RTC_DRV_ISL12022 is not set
# CONFIG_RTC_DRV_X1205 is not set
# CONFIG_RTC_DRV_PCF8523 is not set
# CONFIG_RTC_DRV_PCF85063 is not set
# CONFIG_RTC_DRV_PCF85363 is not set
# CONFIG_RTC_DRV_PCF8563 is not set
# CONFIG_RTC_DRV_PCF8583 is not set
# CONFIG_RTC_DRV_M41T80 is not set
# CONFIG_RTC_DRV_BQ32K is not set
# CONFIG_RTC_DRV_S35390A is not set
# CONFIG_RTC_DRV_FM3130 is not set
# CONFIG_RTC_DRV_RX8010 is not set
# CONFIG_RTC_DRV_RX8581 is not set
# CONFIG_RTC_DRV_RX8025 is not set
# CONFIG_RTC_DRV_EM3027 is not set
# CONFIG_RTC_DRV_RV3028 is not set
# CONFIG_RTC_DRV_RV3032 is not set
# CONFIG_RTC_DRV_RV8803 is not set
# CONFIG_RTC_DRV_SD3078 is not set
#
# SPI RTC drivers
#
CONFIG_RTC_I2C_AND_SPI=y
#
# SPI and I2C RTC drivers
#
# CONFIG_RTC_DRV_DS3232 is not set
# CONFIG_RTC_DRV_PCF2127 is not set
# CONFIG_RTC_DRV_RV3029C2 is not set
# CONFIG_RTC_DRV_RX6110 is not set
#
# Platform RTC drivers
#
CONFIG_RTC_DRV_CMOS=y
# CONFIG_RTC_DRV_DS1286 is not set
# CONFIG_RTC_DRV_DS1511 is not set
# CONFIG_RTC_DRV_DS1553 is not set
# CONFIG_RTC_DRV_DS1685_FAMILY is not set
# CONFIG_RTC_DRV_DS1742 is not set
# CONFIG_RTC_DRV_DS2404 is not set
# CONFIG_RTC_DRV_STK17TA8 is not set
# CONFIG_RTC_DRV_M48T86 is not set
# CONFIG_RTC_DRV_M48T35 is not set
# CONFIG_RTC_DRV_M48T59 is not set
# CONFIG_RTC_DRV_MSM6242 is not set
# CONFIG_RTC_DRV_BQ4802 is not set
# CONFIG_RTC_DRV_RP5C01 is not set
# CONFIG_RTC_DRV_V3020 is not set
#
# on-CPU RTC drivers
#
# CONFIG_RTC_DRV_FTRTC010 is not set
#
# HID Sensor RTC drivers
#
# CONFIG_RTC_DRV_GOLDFISH is not set
CONFIG_DMADEVICES=y
# CONFIG_DMADEVICES_DEBUG is not set
#
# DMA Devices
#
CONFIG_DMA_ENGINE=y
CONFIG_DMA_VIRTUAL_CHANNELS=y
CONFIG_DMA_ACPI=y
# CONFIG_ALTERA_MSGDMA is not set
# CONFIG_INTEL_IDMA64 is not set
# CONFIG_INTEL_IDXD is not set
# CONFIG_INTEL_IDXD_COMPAT is not set
# CONFIG_INTEL_IOATDMA is not set
# CONFIG_PLX_DMA is not set
# CONFIG_AMD_PTDMA is not set
# CONFIG_QCOM_HIDMA_MGMT is not set
# CONFIG_QCOM_HIDMA is not set
CONFIG_DW_DMAC_CORE=y
# CONFIG_DW_DMAC is not set
# CONFIG_DW_DMAC_PCI is not set
# CONFIG_DW_EDMA is not set
# CONFIG_DW_EDMA_PCIE is not set
CONFIG_HSU_DMA=y
# CONFIG_SF_PDMA is not set
# CONFIG_INTEL_LDMA is not set
#
# DMA Clients
#
# CONFIG_ASYNC_TX_DMA is not set
# CONFIG_DMATEST is not set
#
# DMABUF options
#
CONFIG_SYNC_FILE=y
# CONFIG_SW_SYNC is not set
# CONFIG_UDMABUF is not set
# CONFIG_DMABUF_MOVE_NOTIFY is not set
# CONFIG_DMABUF_DEBUG is not set
# CONFIG_DMABUF_SELFTESTS is not set
# CONFIG_DMABUF_HEAPS is not set
# CONFIG_DMABUF_SYSFS_STATS is not set
# end of DMABUF options
# CONFIG_AUXDISPLAY is not set
# CONFIG_UIO is not set
# CONFIG_VFIO is not set
# CONFIG_VIRT_DRIVERS is not set
CONFIG_VIRTIO=y
CONFIG_VIRTIO_PCI_LIB=y
CONFIG_VIRTIO_PCI_LIB_LEGACY=y
CONFIG_VIRTIO_MENU=y
CONFIG_VIRTIO_PCI=y
CONFIG_VIRTIO_PCI_LEGACY=y
# CONFIG_VIRTIO_BALLOON is not set
CONFIG_VIRTIO_INPUT=y
# CONFIG_VIRTIO_MMIO is not set
CONFIG_VIRTIO_DMA_SHARED_BUFFER=y
# CONFIG_VDPA is not set
CONFIG_VHOST_MENU=y
# CONFIG_VHOST_NET is not set
# CONFIG_VHOST_CROSS_ENDIAN_LEGACY is not set
#
# Microsoft Hyper-V guest support
#
# CONFIG_HYPERV is not set
# end of Microsoft Hyper-V guest support
# CONFIG_GREYBUS is not set
# CONFIG_COMEDI is not set
# CONFIG_STAGING is not set
CONFIG_X86_PLATFORM_DEVICES=y
# CONFIG_ACPI_WMI is not set
# CONFIG_ACERHDF is not set
# CONFIG_ACER_WIRELESS is not set
# CONFIG_AMD_PMC is not set
# CONFIG_ADV_SWBUTTON is not set
# CONFIG_APPLE_GMUX is not set
# CONFIG_ASUS_LAPTOP is not set
# CONFIG_ASUS_WIRELESS is not set
CONFIG_EEEPC_LAPTOP=y
# CONFIG_X86_PLATFORM_DRIVERS_DELL is not set
# CONFIG_AMILO_RFKILL is not set
# CONFIG_FUJITSU_LAPTOP is not set
# CONFIG_FUJITSU_TABLET is not set
# CONFIG_GPD_POCKET_FAN is not set
# CONFIG_HP_ACCEL is not set
# CONFIG_WIRELESS_HOTKEY is not set
# CONFIG_IBM_RTL is not set
# CONFIG_IDEAPAD_LAPTOP is not set
# CONFIG_SENSORS_HDAPS is not set
# CONFIG_THINKPAD_ACPI is not set
CONFIG_X86_PLATFORM_DRIVERS_INTEL=y
# CONFIG_INTEL_ATOMISP2_PM is not set
# CONFIG_INTEL_SAR_INT1092 is not set
# CONFIG_INTEL_PMC_CORE is not set
#
# Intel Speed Select Technology interface support
#
# CONFIG_INTEL_SPEED_SELECT_INTERFACE is not set
# end of Intel Speed Select Technology interface support
# CONFIG_INTEL_HID_EVENT is not set
# CONFIG_INTEL_VBTN is not set
# CONFIG_INTEL_OAKTRAIL is not set
# CONFIG_INTEL_PUNIT_IPC is not set
# CONFIG_INTEL_RST is not set
# CONFIG_INTEL_SMARTCONNECT is not set
# CONFIG_INTEL_TURBO_MAX_3 is not set
# CONFIG_INTEL_UNCORE_FREQ_CONTROL is not set
# CONFIG_MSI_LAPTOP is not set
# CONFIG_SAMSUNG_LAPTOP is not set
# CONFIG_SAMSUNG_Q10 is not set
# CONFIG_TOSHIBA_BT_RFKILL is not set
# CONFIG_TOSHIBA_HAPS is not set
# CONFIG_ACPI_CMPC is not set
# CONFIG_COMPAL_LAPTOP is not set
# CONFIG_PANASONIC_LAPTOP is not set
# CONFIG_SONY_LAPTOP is not set
# CONFIG_SYSTEM76_ACPI is not set
# CONFIG_TOPSTAR_LAPTOP is not set
# CONFIG_I2C_MULTI_INSTANTIATE is not set
# CONFIG_MLX_PLATFORM is not set
# CONFIG_INTEL_IPS is not set
# CONFIG_INTEL_SCU_PCI is not set
# CONFIG_INTEL_SCU_PLATFORM is not set
CONFIG_PMC_ATOM=y
# CONFIG_CHROME_PLATFORMS is not set
# CONFIG_MELLANOX_PLATFORM is not set
CONFIG_SURFACE_PLATFORMS=y
# CONFIG_SURFACE_3_POWER_OPREGION is not set
# CONFIG_SURFACE_GPE is not set
# CONFIG_SURFACE_PRO3_BUTTON is not set
CONFIG_HAVE_CLK=y
CONFIG_HAVE_CLK_PREPARE=y
CONFIG_COMMON_CLK=y
# CONFIG_COMMON_CLK_MAX9485 is not set
# CONFIG_COMMON_CLK_SI5341 is not set
# CONFIG_COMMON_CLK_SI5351 is not set
# CONFIG_COMMON_CLK_SI544 is not set
# CONFIG_COMMON_CLK_CDCE706 is not set
# CONFIG_COMMON_CLK_CS2000_CP is not set
# CONFIG_XILINX_VCU is not set
# CONFIG_HWSPINLOCK is not set
#
# Clock Source drivers
#
CONFIG_CLKEVT_I8253=y
CONFIG_I8253_LOCK=y
CONFIG_CLKBLD_I8253=y
# end of Clock Source drivers
CONFIG_MAILBOX=y
CONFIG_PCC=y
# CONFIG_ALTERA_MBOX is not set
CONFIG_IOMMU_IOVA=y
CONFIG_IOASID=y
CONFIG_IOMMU_API=y
CONFIG_IOMMU_SUPPORT=y
#
# Generic IOMMU Pagetable Support
#
CONFIG_IOMMU_IO_PGTABLE=y
# end of Generic IOMMU Pagetable Support
# CONFIG_IOMMU_DEBUGFS is not set
# CONFIG_IOMMU_DEFAULT_DMA_STRICT is not set
CONFIG_IOMMU_DEFAULT_DMA_LAZY=y
# CONFIG_IOMMU_DEFAULT_PASSTHROUGH is not set
CONFIG_IOMMU_DMA=y
CONFIG_AMD_IOMMU=y
# CONFIG_AMD_IOMMU_V2 is not set
CONFIG_DMAR_TABLE=y
CONFIG_INTEL_IOMMU=y
# CONFIG_INTEL_IOMMU_SVM is not set
# CONFIG_INTEL_IOMMU_DEFAULT_ON is not set
CONFIG_INTEL_IOMMU_FLOPPY_WA=y
CONFIG_INTEL_IOMMU_SCALABLE_MODE_DEFAULT_ON=y
# CONFIG_IRQ_REMAP is not set
# CONFIG_VIRTIO_IOMMU is not set
#
# Remoteproc drivers
#
# CONFIG_REMOTEPROC is not set
# end of Remoteproc drivers
#
# Rpmsg drivers
#
# CONFIG_RPMSG_QCOM_GLINK_RPM is not set
# CONFIG_RPMSG_VIRTIO is not set
# end of Rpmsg drivers
# CONFIG_SOUNDWIRE is not set
#
# SOC (System On Chip) specific Drivers
#
#
# Amlogic SoC drivers
#
# end of Amlogic SoC drivers
#
# Broadcom SoC drivers
#
# end of Broadcom SoC drivers
#
# NXP/Freescale QorIQ SoC drivers
#
# end of NXP/Freescale QorIQ SoC drivers
#
# i.MX SoC drivers
#
# end of i.MX SoC drivers
#
# Enable LiteX SoC Builder specific drivers
#
# end of Enable LiteX SoC Builder specific drivers
#
# Qualcomm SoC drivers
#
# end of Qualcomm SoC drivers
# CONFIG_SOC_TI is not set
#
# Xilinx SoC drivers
#
# end of Xilinx SoC drivers
# end of SOC (System On Chip) specific Drivers
# CONFIG_PM_DEVFREQ is not set
# CONFIG_EXTCON is not set
# CONFIG_MEMORY is not set
# CONFIG_IIO is not set
# CONFIG_NTB is not set
# CONFIG_VME_BUS is not set
# CONFIG_PWM is not set
#
# IRQ chip support
#
# end of IRQ chip support
# CONFIG_IPACK_BUS is not set
# CONFIG_RESET_CONTROLLER is not set
#
# PHY Subsystem
#
# CONFIG_GENERIC_PHY is not set
# CONFIG_USB_LGM_PHY is not set
# CONFIG_PHY_CAN_TRANSCEIVER is not set
#
# PHY drivers for Broadcom platforms
#
# CONFIG_BCM_KONA_USB2_PHY is not set
# end of PHY drivers for Broadcom platforms
# CONFIG_PHY_PXA_28NM_HSIC is not set
# CONFIG_PHY_PXA_28NM_USB2 is not set
# CONFIG_PHY_INTEL_LGM_EMMC is not set
# end of PHY Subsystem
# CONFIG_POWERCAP is not set
# CONFIG_MCB is not set
#
# Performance monitor support
#
# end of Performance monitor support
# CONFIG_RAS is not set
# CONFIG_USB4 is not set
#
# Android
#
# CONFIG_ANDROID is not set
# end of Android
# CONFIG_LIBNVDIMM is not set
# CONFIG_DAX is not set
CONFIG_NVMEM=y
CONFIG_NVMEM_SYSFS=y
# CONFIG_NVMEM_RMEM is not set
#
# HW tracing support
#
# CONFIG_STM is not set
# CONFIG_INTEL_TH is not set
# end of HW tracing support
# CONFIG_FPGA is not set
# CONFIG_TEE is not set
# CONFIG_UNISYS_VISORBUS is not set
# CONFIG_SIOX is not set
# CONFIG_SLIMBUS is not set
# CONFIG_INTERCONNECT is not set
# CONFIG_COUNTER is not set
# CONFIG_MOST is not set
# end of Device Drivers
#
# File systems
#
CONFIG_DCACHE_WORD_ACCESS=y
# CONFIG_VALIDATE_FS_PARSER is not set
CONFIG_FS_IOMAP=y
# CONFIG_EXT2_FS is not set
# CONFIG_EXT3_FS is not set
CONFIG_EXT4_FS=y
CONFIG_EXT4_USE_FOR_EXT2=y
CONFIG_EXT4_FS_POSIX_ACL=y
CONFIG_EXT4_FS_SECURITY=y
# CONFIG_EXT4_DEBUG is not set
# CONFIG_EXT4_KUNIT_TESTS is not set
CONFIG_JBD2=y
# CONFIG_JBD2_DEBUG is not set
CONFIG_FS_MBCACHE=y
# CONFIG_REISERFS_FS is not set
# CONFIG_JFS_FS is not set
CONFIG_XFS_FS=m
CONFIG_XFS_SUPPORT_V4=y
# CONFIG_XFS_QUOTA is not set
# CONFIG_XFS_POSIX_ACL is not set
# CONFIG_XFS_RT is not set
# CONFIG_XFS_ONLINE_SCRUB is not set
# CONFIG_XFS_WARN is not set
# CONFIG_XFS_DEBUG is not set
# CONFIG_GFS2_FS is not set
# CONFIG_OCFS2_FS is not set
CONFIG_BTRFS_FS=y
# CONFIG_BTRFS_FS_POSIX_ACL is not set
# CONFIG_BTRFS_FS_CHECK_INTEGRITY is not set
# CONFIG_BTRFS_FS_RUN_SANITY_TESTS is not set
# CONFIG_BTRFS_DEBUG is not set
# CONFIG_BTRFS_ASSERT is not set
# CONFIG_BTRFS_FS_REF_VERIFY is not set
# CONFIG_NILFS2_FS is not set
# CONFIG_F2FS_FS is not set
# CONFIG_FS_DAX is not set
CONFIG_FS_POSIX_ACL=y
CONFIG_EXPORTFS=y
# CONFIG_EXPORTFS_BLOCK_OPS is not set
CONFIG_FILE_LOCKING=y
# CONFIG_FS_ENCRYPTION is not set
# CONFIG_FS_VERITY is not set
CONFIG_FSNOTIFY=y
CONFIG_DNOTIFY=y
CONFIG_INOTIFY_USER=y
# CONFIG_FANOTIFY is not set
CONFIG_QUOTA=y
CONFIG_QUOTA_NETLINK_INTERFACE=y
# CONFIG_PRINT_QUOTA_WARNING is not set
# CONFIG_QUOTA_DEBUG is not set
CONFIG_QUOTA_TREE=y
# CONFIG_QFMT_V1 is not set
CONFIG_QFMT_V2=y
CONFIG_QUOTACTL=y
CONFIG_AUTOFS4_FS=y
CONFIG_AUTOFS_FS=y
# CONFIG_FUSE_FS is not set
CONFIG_OVERLAY_FS=y
# CONFIG_OVERLAY_FS_REDIRECT_DIR is not set
CONFIG_OVERLAY_FS_REDIRECT_ALWAYS_FOLLOW=y
# CONFIG_OVERLAY_FS_INDEX is not set
# CONFIG_OVERLAY_FS_XINO_AUTO is not set
# CONFIG_OVERLAY_FS_METACOPY is not set
#
# Caches
#
CONFIG_NETFS_SUPPORT=y
# CONFIG_NETFS_STATS is not set
# CONFIG_FSCACHE is not set
# end of Caches
#
# CD-ROM/DVD Filesystems
#
CONFIG_ISO9660_FS=y
CONFIG_JOLIET=y
CONFIG_ZISOFS=y
# CONFIG_UDF_FS is not set
# end of CD-ROM/DVD Filesystems
#
# DOS/FAT/EXFAT/NT Filesystems
#
CONFIG_FAT_FS=y
CONFIG_MSDOS_FS=y
CONFIG_VFAT_FS=y
CONFIG_FAT_DEFAULT_CODEPAGE=437
CONFIG_FAT_DEFAULT_IOCHARSET="iso8859-1"
# CONFIG_FAT_DEFAULT_UTF8 is not set
# CONFIG_FAT_KUNIT_TEST is not set
# CONFIG_EXFAT_FS is not set
# CONFIG_NTFS_FS is not set
# CONFIG_NTFS3_FS is not set
# end of DOS/FAT/EXFAT/NT Filesystems
#
# Pseudo filesystems
#
CONFIG_PROC_FS=y
CONFIG_PROC_KCORE=y
CONFIG_PROC_VMCORE=y
# CONFIG_PROC_VMCORE_DEVICE_DUMP is not set
CONFIG_PROC_SYSCTL=y
CONFIG_PROC_PAGE_MONITOR=y
# CONFIG_PROC_CHILDREN is not set
CONFIG_PROC_PID_ARCH_STATUS=y
CONFIG_KERNFS=y
CONFIG_SYSFS=y
CONFIG_TMPFS=y
CONFIG_TMPFS_POSIX_ACL=y
CONFIG_TMPFS_XATTR=y
# CONFIG_TMPFS_INODE64 is not set
CONFIG_HUGETLBFS=y
CONFIG_HUGETLB_PAGE=y
CONFIG_HUGETLB_PAGE_FREE_VMEMMAP=y
# CONFIG_HUGETLB_PAGE_FREE_VMEMMAP_DEFAULT_ON is not set
CONFIG_MEMFD_CREATE=y
CONFIG_ARCH_HAS_GIGANTIC_PAGE=y
CONFIG_CONFIGFS_FS=y
CONFIG_EFIVAR_FS=m
# end of Pseudo filesystems
CONFIG_MISC_FILESYSTEMS=y
# CONFIG_ORANGEFS_FS is not set
# CONFIG_ADFS_FS is not set
# CONFIG_AFFS_FS is not set
# CONFIG_ECRYPT_FS is not set
# CONFIG_HFS_FS is not set
# CONFIG_HFSPLUS_FS is not set
# CONFIG_BEFS_FS is not set
# CONFIG_BFS_FS is not set
# CONFIG_EFS_FS is not set
# CONFIG_CRAMFS is not set
# CONFIG_SQUASHFS is not set
# CONFIG_VXFS_FS is not set
# CONFIG_MINIX_FS is not set
# CONFIG_OMFS_FS is not set
# CONFIG_HPFS_FS is not set
# CONFIG_QNX4FS_FS is not set
# CONFIG_QNX6FS_FS is not set
# CONFIG_ROMFS_FS is not set
# CONFIG_PSTORE is not set
# CONFIG_SYSV_FS is not set
# CONFIG_UFS_FS is not set
# CONFIG_EROFS_FS is not set
CONFIG_NETWORK_FILESYSTEMS=y
CONFIG_NFS_FS=y
CONFIG_NFS_V2=y
CONFIG_NFS_V3=y
CONFIG_NFS_V3_ACL=y
CONFIG_NFS_V4=y
# CONFIG_NFS_SWAP is not set
# CONFIG_NFS_V4_1 is not set
CONFIG_ROOT_NFS=y
# CONFIG_NFS_USE_LEGACY_DNS is not set
CONFIG_NFS_USE_KERNEL_DNS=y
CONFIG_NFS_DISABLE_UDP_SUPPORT=y
# CONFIG_NFSD is not set
CONFIG_GRACE_PERIOD=y
CONFIG_LOCKD=y
CONFIG_LOCKD_V4=y
CONFIG_NFS_ACL_SUPPORT=y
CONFIG_NFS_COMMON=y
CONFIG_SUNRPC=y
CONFIG_SUNRPC_GSS=y
# CONFIG_SUNRPC_DEBUG is not set
# CONFIG_CEPH_FS is not set
# CONFIG_CIFS is not set
# CONFIG_SMB_SERVER is not set
# CONFIG_CODA_FS is not set
# CONFIG_AFS_FS is not set
CONFIG_9P_FS=y
# CONFIG_9P_FS_POSIX_ACL is not set
# CONFIG_9P_FS_SECURITY is not set
CONFIG_NLS=y
CONFIG_NLS_DEFAULT="utf8"
CONFIG_NLS_CODEPAGE_437=y
# CONFIG_NLS_CODEPAGE_737 is not set
# CONFIG_NLS_CODEPAGE_775 is not set
# CONFIG_NLS_CODEPAGE_850 is not set
# CONFIG_NLS_CODEPAGE_852 is not set
# CONFIG_NLS_CODEPAGE_855 is not set
# CONFIG_NLS_CODEPAGE_857 is not set
# CONFIG_NLS_CODEPAGE_860 is not set
# CONFIG_NLS_CODEPAGE_861 is not set
# CONFIG_NLS_CODEPAGE_862 is not set
# CONFIG_NLS_CODEPAGE_863 is not set
# CONFIG_NLS_CODEPAGE_864 is not set
# CONFIG_NLS_CODEPAGE_865 is not set
# CONFIG_NLS_CODEPAGE_866 is not set
# CONFIG_NLS_CODEPAGE_869 is not set
# CONFIG_NLS_CODEPAGE_936 is not set
# CONFIG_NLS_CODEPAGE_950 is not set
# CONFIG_NLS_CODEPAGE_932 is not set
# CONFIG_NLS_CODEPAGE_949 is not set
# CONFIG_NLS_CODEPAGE_874 is not set
# CONFIG_NLS_ISO8859_8 is not set
# CONFIG_NLS_CODEPAGE_1250 is not set
# CONFIG_NLS_CODEPAGE_1251 is not set
CONFIG_NLS_ASCII=y
CONFIG_NLS_ISO8859_1=y
# CONFIG_NLS_ISO8859_2 is not set
# CONFIG_NLS_ISO8859_3 is not set
# CONFIG_NLS_ISO8859_4 is not set
# CONFIG_NLS_ISO8859_5 is not set
# CONFIG_NLS_ISO8859_6 is not set
# CONFIG_NLS_ISO8859_7 is not set
# CONFIG_NLS_ISO8859_9 is not set
# CONFIG_NLS_ISO8859_13 is not set
# CONFIG_NLS_ISO8859_14 is not set
# CONFIG_NLS_ISO8859_15 is not set
# CONFIG_NLS_KOI8_R is not set
# CONFIG_NLS_KOI8_U is not set
# CONFIG_NLS_MAC_ROMAN is not set
# CONFIG_NLS_MAC_CELTIC is not set
# CONFIG_NLS_MAC_CENTEURO is not set
# CONFIG_NLS_MAC_CROATIAN is not set
# CONFIG_NLS_MAC_CYRILLIC is not set
# CONFIG_NLS_MAC_GAELIC is not set
# CONFIG_NLS_MAC_GREEK is not set
# CONFIG_NLS_MAC_ICELAND is not set
# CONFIG_NLS_MAC_INUIT is not set
# CONFIG_NLS_MAC_ROMANIAN is not set
# CONFIG_NLS_MAC_TURKISH is not set
CONFIG_NLS_UTF8=y
# CONFIG_DLM is not set
# CONFIG_UNICODE is not set
CONFIG_IO_WQ=y
# end of File systems
#
# Security options
#
CONFIG_KEYS=y
# CONFIG_KEYS_REQUEST_CACHE is not set
# CONFIG_PERSISTENT_KEYRINGS is not set
# CONFIG_ENCRYPTED_KEYS is not set
# CONFIG_KEY_DH_OPERATIONS is not set
# CONFIG_SECURITY_DMESG_RESTRICT is not set
CONFIG_SECURITY=y
CONFIG_SECURITY_WRITABLE_HOOKS=y
CONFIG_SECURITYFS=y
CONFIG_SECURITY_NETWORK=y
CONFIG_PAGE_TABLE_ISOLATION=y
# CONFIG_SECURITY_NETWORK_XFRM is not set
# CONFIG_SECURITY_PATH is not set
# CONFIG_INTEL_TXT is not set
CONFIG_LSM_MMAP_MIN_ADDR=65536
CONFIG_HAVE_HARDENED_USERCOPY_ALLOCATOR=y
# CONFIG_HARDENED_USERCOPY is not set
# CONFIG_FORTIFY_SOURCE is not set
# CONFIG_STATIC_USERMODEHELPER is not set
CONFIG_SECURITY_SELINUX=y
CONFIG_SECURITY_SELINUX_BOOTPARAM=y
CONFIG_SECURITY_SELINUX_DISABLE=y
CONFIG_SECURITY_SELINUX_DEVELOP=y
CONFIG_SECURITY_SELINUX_AVC_STATS=y
CONFIG_SECURITY_SELINUX_CHECKREQPROT_VALUE=0
CONFIG_SECURITY_SELINUX_SIDTAB_HASH_BITS=9
CONFIG_SECURITY_SELINUX_SID2STR_CACHE_SIZE=256
# CONFIG_SECURITY_SMACK is not set
# CONFIG_SECURITY_TOMOYO is not set
# CONFIG_SECURITY_APPARMOR is not set
# CONFIG_SECURITY_LOADPIN is not set
# CONFIG_SECURITY_YAMA is not set
# CONFIG_SECURITY_SAFESETID is not set
# CONFIG_SECURITY_LOCKDOWN_LSM is not set
# CONFIG_SECURITY_LANDLOCK is not set
CONFIG_INTEGRITY=y
# CONFIG_INTEGRITY_SIGNATURE is not set
CONFIG_INTEGRITY_AUDIT=y
# CONFIG_IMA is not set
# CONFIG_IMA_SECURE_AND_OR_TRUSTED_BOOT is not set
# CONFIG_EVM is not set
CONFIG_DEFAULT_SECURITY_SELINUX=y
# CONFIG_DEFAULT_SECURITY_DAC is not set
CONFIG_LSM="landlock,lockdown,yama,loadpin,safesetid,integrity,selinux,smack,tomoyo,apparmor,bpf"
#
# Kernel hardening options
#
#
# Memory initialization
#
CONFIG_INIT_STACK_NONE=y
# CONFIG_INIT_ON_ALLOC_DEFAULT_ON is not set
# CONFIG_INIT_ON_FREE_DEFAULT_ON is not set
CONFIG_CC_HAS_ZERO_CALL_USED_REGS=y
# CONFIG_ZERO_CALL_USED_REGS is not set
# end of Memory initialization
# end of Kernel hardening options
# end of Security options
CONFIG_XOR_BLOCKS=y
CONFIG_CRYPTO=y
#
# Crypto core or helper
#
CONFIG_CRYPTO_ALGAPI=y
CONFIG_CRYPTO_ALGAPI2=y
CONFIG_CRYPTO_AEAD=y
CONFIG_CRYPTO_AEAD2=y
CONFIG_CRYPTO_SKCIPHER=y
CONFIG_CRYPTO_SKCIPHER2=y
CONFIG_CRYPTO_HASH=y
CONFIG_CRYPTO_HASH2=y
CONFIG_CRYPTO_RNG=y
CONFIG_CRYPTO_RNG2=y
CONFIG_CRYPTO_RNG_DEFAULT=y
CONFIG_CRYPTO_AKCIPHER2=y
CONFIG_CRYPTO_AKCIPHER=y
CONFIG_CRYPTO_KPP2=y
CONFIG_CRYPTO_ACOMP2=y
CONFIG_CRYPTO_MANAGER=y
CONFIG_CRYPTO_MANAGER2=y
# CONFIG_CRYPTO_USER is not set
CONFIG_CRYPTO_MANAGER_DISABLE_TESTS=y
CONFIG_CRYPTO_GF128MUL=y
CONFIG_CRYPTO_NULL=y
CONFIG_CRYPTO_NULL2=y
# CONFIG_CRYPTO_PCRYPT is not set
# CONFIG_CRYPTO_CRYPTD is not set
CONFIG_CRYPTO_AUTHENC=y
# CONFIG_CRYPTO_TEST is not set
#
# Public-key cryptography
#
CONFIG_CRYPTO_RSA=y
# CONFIG_CRYPTO_DH is not set
# CONFIG_CRYPTO_ECDH is not set
# CONFIG_CRYPTO_ECDSA is not set
# CONFIG_CRYPTO_ECRDSA is not set
# CONFIG_CRYPTO_SM2 is not set
# CONFIG_CRYPTO_CURVE25519 is not set
# CONFIG_CRYPTO_CURVE25519_X86 is not set
#
# Authenticated Encryption with Associated Data
#
CONFIG_CRYPTO_CCM=y
CONFIG_CRYPTO_GCM=y
# CONFIG_CRYPTO_CHACHA20POLY1305 is not set
# CONFIG_CRYPTO_AEGIS128 is not set
# CONFIG_CRYPTO_AEGIS128_AESNI_SSE2 is not set
CONFIG_CRYPTO_SEQIV=y
CONFIG_CRYPTO_ECHAINIV=y
#
# Block modes
#
CONFIG_CRYPTO_CBC=y
# CONFIG_CRYPTO_CFB is not set
CONFIG_CRYPTO_CTR=y
# CONFIG_CRYPTO_CTS is not set
# CONFIG_CRYPTO_ECB is not set
# CONFIG_CRYPTO_LRW is not set
# CONFIG_CRYPTO_OFB is not set
# CONFIG_CRYPTO_PCBC is not set
# CONFIG_CRYPTO_XTS is not set
# CONFIG_CRYPTO_KEYWRAP is not set
# CONFIG_CRYPTO_NHPOLY1305_SSE2 is not set
# CONFIG_CRYPTO_NHPOLY1305_AVX2 is not set
# CONFIG_CRYPTO_ADIANTUM is not set
# CONFIG_CRYPTO_ESSIV is not set
#
# Hash modes
#
CONFIG_CRYPTO_CMAC=y
CONFIG_CRYPTO_HMAC=y
# CONFIG_CRYPTO_XCBC is not set
# CONFIG_CRYPTO_VMAC is not set
#
# Digest
#
CONFIG_CRYPTO_CRC32C=y
# CONFIG_CRYPTO_CRC32C_INTEL is not set
# CONFIG_CRYPTO_CRC32 is not set
# CONFIG_CRYPTO_CRC32_PCLMUL is not set
CONFIG_CRYPTO_XXHASH=y
CONFIG_CRYPTO_BLAKE2B=y
# CONFIG_CRYPTO_BLAKE2S is not set
# CONFIG_CRYPTO_BLAKE2S_X86 is not set
# CONFIG_CRYPTO_CRCT10DIF is not set
CONFIG_CRYPTO_GHASH=y
# CONFIG_CRYPTO_POLY1305 is not set
# CONFIG_CRYPTO_POLY1305_X86_64 is not set
# CONFIG_CRYPTO_MD4 is not set
CONFIG_CRYPTO_MD5=y
# CONFIG_CRYPTO_MICHAEL_MIC is not set
# CONFIG_CRYPTO_RMD160 is not set
# CONFIG_CRYPTO_SHA1 is not set
# CONFIG_CRYPTO_SHA1_SSSE3 is not set
# CONFIG_CRYPTO_SHA256_SSSE3 is not set
# CONFIG_CRYPTO_SHA512_SSSE3 is not set
CONFIG_CRYPTO_SHA256=y
CONFIG_CRYPTO_SHA512=y
# CONFIG_CRYPTO_SHA3 is not set
# CONFIG_CRYPTO_SM3 is not set
# CONFIG_CRYPTO_STREEBOG is not set
# CONFIG_CRYPTO_WP512 is not set
# CONFIG_CRYPTO_GHASH_CLMUL_NI_INTEL is not set
#
# Ciphers
#
CONFIG_CRYPTO_AES=y
# CONFIG_CRYPTO_AES_TI is not set
# CONFIG_CRYPTO_AES_NI_INTEL is not set
# CONFIG_CRYPTO_BLOWFISH is not set
# CONFIG_CRYPTO_BLOWFISH_X86_64 is not set
# CONFIG_CRYPTO_CAMELLIA is not set
# CONFIG_CRYPTO_CAMELLIA_X86_64 is not set
# CONFIG_CRYPTO_CAMELLIA_AESNI_AVX_X86_64 is not set
# CONFIG_CRYPTO_CAMELLIA_AESNI_AVX2_X86_64 is not set
# CONFIG_CRYPTO_CAST5 is not set
# CONFIG_CRYPTO_CAST5_AVX_X86_64 is not set
# CONFIG_CRYPTO_CAST6 is not set
# CONFIG_CRYPTO_CAST6_AVX_X86_64 is not set
# CONFIG_CRYPTO_DES is not set
# CONFIG_CRYPTO_DES3_EDE_X86_64 is not set
# CONFIG_CRYPTO_FCRYPT is not set
# CONFIG_CRYPTO_CHACHA20 is not set
# CONFIG_CRYPTO_CHACHA20_X86_64 is not set
# CONFIG_CRYPTO_SERPENT is not set
# CONFIG_CRYPTO_SERPENT_SSE2_X86_64 is not set
# CONFIG_CRYPTO_SERPENT_AVX_X86_64 is not set
# CONFIG_CRYPTO_SERPENT_AVX2_X86_64 is not set
# CONFIG_CRYPTO_SM4 is not set
# CONFIG_CRYPTO_SM4_AESNI_AVX_X86_64 is not set
# CONFIG_CRYPTO_SM4_AESNI_AVX2_X86_64 is not set
# CONFIG_CRYPTO_TWOFISH is not set
# CONFIG_CRYPTO_TWOFISH_X86_64 is not set
# CONFIG_CRYPTO_TWOFISH_X86_64_3WAY is not set
# CONFIG_CRYPTO_TWOFISH_AVX_X86_64 is not set
#
# Compression
#
# CONFIG_CRYPTO_DEFLATE is not set
# CONFIG_CRYPTO_LZO is not set
# CONFIG_CRYPTO_842 is not set
# CONFIG_CRYPTO_LZ4 is not set
# CONFIG_CRYPTO_LZ4HC is not set
# CONFIG_CRYPTO_ZSTD is not set
#
# Random Number Generation
#
# CONFIG_CRYPTO_ANSI_CPRNG is not set
CONFIG_CRYPTO_DRBG_MENU=y
CONFIG_CRYPTO_DRBG_HMAC=y
# CONFIG_CRYPTO_DRBG_HASH is not set
# CONFIG_CRYPTO_DRBG_CTR is not set
CONFIG_CRYPTO_DRBG=y
CONFIG_CRYPTO_JITTERENTROPY=y
# CONFIG_CRYPTO_USER_API_HASH is not set
# CONFIG_CRYPTO_USER_API_SKCIPHER is not set
# CONFIG_CRYPTO_USER_API_RNG is not set
# CONFIG_CRYPTO_USER_API_AEAD is not set
CONFIG_CRYPTO_HASH_INFO=y
#
# Crypto library routines
#
CONFIG_CRYPTO_LIB_AES=y
CONFIG_CRYPTO_LIB_ARC4=y
# CONFIG_CRYPTO_LIB_BLAKE2S is not set
# CONFIG_CRYPTO_LIB_CHACHA is not set
# CONFIG_CRYPTO_LIB_CURVE25519 is not set
CONFIG_CRYPTO_LIB_POLY1305_RSIZE=11
# CONFIG_CRYPTO_LIB_POLY1305 is not set
# CONFIG_CRYPTO_LIB_CHACHA20POLY1305 is not set
CONFIG_CRYPTO_LIB_SHA256=y
CONFIG_CRYPTO_HW=y
# CONFIG_CRYPTO_DEV_PADLOCK is not set
# CONFIG_CRYPTO_DEV_ATMEL_ECC is not set
# CONFIG_CRYPTO_DEV_ATMEL_SHA204A is not set
# CONFIG_CRYPTO_DEV_CCP is not set
# CONFIG_CRYPTO_DEV_QAT_DH895xCC is not set
# CONFIG_CRYPTO_DEV_QAT_C3XXX is not set
# CONFIG_CRYPTO_DEV_QAT_C62X is not set
# CONFIG_CRYPTO_DEV_QAT_4XXX is not set
# CONFIG_CRYPTO_DEV_QAT_DH895xCCVF is not set
# CONFIG_CRYPTO_DEV_QAT_C3XXXVF is not set
# CONFIG_CRYPTO_DEV_QAT_C62XVF is not set
# CONFIG_CRYPTO_DEV_NITROX_CNN55XX is not set
# CONFIG_CRYPTO_DEV_VIRTIO is not set
# CONFIG_CRYPTO_DEV_SAFEXCEL is not set
# CONFIG_CRYPTO_DEV_AMLOGIC_GXL is not set
CONFIG_ASYMMETRIC_KEY_TYPE=y
CONFIG_ASYMMETRIC_PUBLIC_KEY_SUBTYPE=y
CONFIG_X509_CERTIFICATE_PARSER=y
# CONFIG_PKCS8_PRIVATE_KEY_PARSER is not set
CONFIG_PKCS7_MESSAGE_PARSER=y
# CONFIG_PKCS7_TEST_KEY is not set
# CONFIG_SIGNED_PE_FILE_VERIFICATION is not set
#
# Certificates for signature checking
#
CONFIG_SYSTEM_TRUSTED_KEYRING=y
CONFIG_SYSTEM_TRUSTED_KEYS=""
# CONFIG_SYSTEM_EXTRA_CERTIFICATE is not set
# CONFIG_SECONDARY_TRUSTED_KEYRING is not set
# CONFIG_SYSTEM_BLACKLIST_KEYRING is not set
# end of Certificates for signature checking
CONFIG_BINARY_PRINTF=y
#
# Library routines
#
CONFIG_RAID6_PQ=y
CONFIG_RAID6_PQ_BENCHMARK=y
# CONFIG_PACKING is not set
CONFIG_BITREVERSE=y
CONFIG_GENERIC_STRNCPY_FROM_USER=y
CONFIG_GENERIC_STRNLEN_USER=y
CONFIG_GENERIC_NET_UTILS=y
CONFIG_GENERIC_FIND_FIRST_BIT=y
# CONFIG_CORDIC is not set
# CONFIG_PRIME_NUMBERS is not set
CONFIG_RATIONAL=y
CONFIG_GENERIC_PCI_IOMAP=y
CONFIG_GENERIC_IOMAP=y
CONFIG_ARCH_USE_CMPXCHG_LOCKREF=y
CONFIG_ARCH_HAS_FAST_MULTIPLIER=y
CONFIG_ARCH_USE_SYM_ANNOTATIONS=y
CONFIG_CRC_CCITT=y
CONFIG_CRC16=y
# CONFIG_CRC_T10DIF is not set
# CONFIG_CRC_ITU_T is not set
CONFIG_CRC32=y
# CONFIG_CRC32_SELFTEST is not set
CONFIG_CRC32_SLICEBY8=y
# CONFIG_CRC32_SLICEBY4 is not set
# CONFIG_CRC32_SARWATE is not set
# CONFIG_CRC32_BIT is not set
# CONFIG_CRC64 is not set
# CONFIG_CRC4 is not set
# CONFIG_CRC7 is not set
CONFIG_LIBCRC32C=y
# CONFIG_CRC8 is not set
CONFIG_XXHASH=y
# CONFIG_RANDOM32_SELFTEST is not set
CONFIG_ZLIB_INFLATE=y
CONFIG_ZLIB_DEFLATE=y
CONFIG_LZO_COMPRESS=y
CONFIG_LZO_DECOMPRESS=y
CONFIG_LZ4_DECOMPRESS=y
CONFIG_ZSTD_COMPRESS=y
CONFIG_ZSTD_DECOMPRESS=y
CONFIG_XZ_DEC=y
CONFIG_XZ_DEC_X86=y
CONFIG_XZ_DEC_POWERPC=y
CONFIG_XZ_DEC_IA64=y
CONFIG_XZ_DEC_ARM=y
CONFIG_XZ_DEC_ARMTHUMB=y
CONFIG_XZ_DEC_SPARC=y
# CONFIG_XZ_DEC_MICROLZMA is not set
CONFIG_XZ_DEC_BCJ=y
# CONFIG_XZ_DEC_TEST is not set
CONFIG_DECOMPRESS_GZIP=y
CONFIG_DECOMPRESS_BZIP2=y
CONFIG_DECOMPRESS_LZMA=y
CONFIG_DECOMPRESS_XZ=y
CONFIG_DECOMPRESS_LZO=y
CONFIG_DECOMPRESS_LZ4=y
CONFIG_DECOMPRESS_ZSTD=y
CONFIG_GENERIC_ALLOCATOR=y
CONFIG_INTERVAL_TREE=y
CONFIG_ASSOCIATIVE_ARRAY=y
CONFIG_HAS_IOMEM=y
CONFIG_HAS_IOPORT_MAP=y
CONFIG_HAS_DMA=y
CONFIG_DMA_OPS=y
CONFIG_NEED_SG_DMA_LENGTH=y
CONFIG_NEED_DMA_MAP_STATE=y
CONFIG_ARCH_DMA_ADDR_T_64BIT=y
CONFIG_SWIOTLB=y
# CONFIG_DMA_API_DEBUG is not set
# CONFIG_DMA_MAP_BENCHMARK is not set
CONFIG_SGL_ALLOC=y
CONFIG_CHECK_SIGNATURE=y
CONFIG_CPU_RMAP=y
CONFIG_DQL=y
CONFIG_GLOB=y
# CONFIG_GLOB_SELFTEST is not set
CONFIG_NLATTR=y
CONFIG_CLZ_TAB=y
# CONFIG_IRQ_POLL is not set
CONFIG_MPILIB=y
CONFIG_OID_REGISTRY=y
CONFIG_UCS2_STRING=y
CONFIG_HAVE_GENERIC_VDSO=y
CONFIG_GENERIC_GETTIMEOFDAY=y
CONFIG_GENERIC_VDSO_TIME_NS=y
CONFIG_FONT_SUPPORT=y
CONFIG_FONT_8x16=y
CONFIG_FONT_AUTOSELECT=y
CONFIG_SG_POOL=y
CONFIG_ARCH_HAS_PMEM_API=y
CONFIG_ARCH_HAS_UACCESS_FLUSHCACHE=y
CONFIG_ARCH_HAS_COPY_MC=y
CONFIG_ARCH_STACKWALK=y
CONFIG_SBITMAP=y
# end of Library routines
#
# Kernel hacking
#
#
# printk and dmesg options
#
CONFIG_PRINTK_TIME=y
# CONFIG_PRINTK_CALLER is not set
# CONFIG_STACKTRACE_BUILD_ID is not set
CONFIG_CONSOLE_LOGLEVEL_DEFAULT=7
CONFIG_CONSOLE_LOGLEVEL_QUIET=4
CONFIG_MESSAGE_LOGLEVEL_DEFAULT=4
# CONFIG_BOOT_PRINTK_DELAY is not set
# CONFIG_DYNAMIC_DEBUG is not set
# CONFIG_DYNAMIC_DEBUG_CORE is not set
CONFIG_SYMBOLIC_ERRNAME=y
CONFIG_DEBUG_BUGVERBOSE=y
# end of printk and dmesg options
#
# Compile-time checks and compiler options
#
CONFIG_DEBUG_INFO=y
# CONFIG_DEBUG_INFO_REDUCED is not set
# CONFIG_DEBUG_INFO_COMPRESSED is not set
# CONFIG_DEBUG_INFO_SPLIT is not set
CONFIG_DEBUG_INFO_DWARF_TOOLCHAIN_DEFAULT=y
# CONFIG_DEBUG_INFO_DWARF4 is not set
# CONFIG_DEBUG_INFO_DWARF5 is not set
CONFIG_PAHOLE_HAS_SPLIT_BTF=y
CONFIG_GDB_SCRIPTS=y
CONFIG_FRAME_WARN=2048
# CONFIG_STRIP_ASM_SYMS is not set
# CONFIG_READABLE_ASM is not set
# CONFIG_HEADERS_INSTALL is not set
# CONFIG_DEBUG_SECTION_MISMATCH is not set
CONFIG_SECTION_MISMATCH_WARN_ONLY=y
# CONFIG_DEBUG_FORCE_FUNCTION_ALIGN_64B is not set
CONFIG_STACK_VALIDATION=y
CONFIG_VMLINUX_VALIDATION=y
# CONFIG_VMLINUX_MAP is not set
# CONFIG_DEBUG_FORCE_WEAK_PER_CPU is not set
# end of Compile-time checks and compiler options
#
# Generic Kernel Debugging Instruments
#
CONFIG_MAGIC_SYSRQ=y
CONFIG_MAGIC_SYSRQ_DEFAULT_ENABLE=0x1
CONFIG_MAGIC_SYSRQ_SERIAL=y
CONFIG_MAGIC_SYSRQ_SERIAL_SEQUENCE=""
CONFIG_DEBUG_FS=y
CONFIG_DEBUG_FS_ALLOW_ALL=y
# CONFIG_DEBUG_FS_DISALLOW_MOUNT is not set
# CONFIG_DEBUG_FS_ALLOW_NONE is not set
CONFIG_HAVE_ARCH_KGDB=y
# CONFIG_KGDB is not set
CONFIG_ARCH_HAS_UBSAN_SANITIZE_ALL=y
# CONFIG_UBSAN is not set
CONFIG_HAVE_ARCH_KCSAN=y
CONFIG_HAVE_KCSAN_COMPILER=y
# CONFIG_KCSAN is not set
# end of Generic Kernel Debugging Instruments
CONFIG_DEBUG_KERNEL=y
CONFIG_DEBUG_MISC=y
#
# Memory Debugging
#
# CONFIG_PAGE_EXTENSION is not set
# CONFIG_DEBUG_PAGEALLOC is not set
# CONFIG_PAGE_OWNER is not set
# CONFIG_PAGE_POISONING is not set
# CONFIG_DEBUG_PAGE_REF is not set
# CONFIG_DEBUG_RODATA_TEST is not set
CONFIG_ARCH_HAS_DEBUG_WX=y
# CONFIG_DEBUG_WX is not set
CONFIG_GENERIC_PTDUMP=y
# CONFIG_PTDUMP_DEBUGFS is not set
# CONFIG_DEBUG_OBJECTS is not set
# CONFIG_SLUB_DEBUG_ON is not set
# CONFIG_SLUB_STATS is not set
CONFIG_HAVE_DEBUG_KMEMLEAK=y
# CONFIG_DEBUG_KMEMLEAK is not set
CONFIG_DEBUG_STACK_USAGE=y
# CONFIG_SCHED_STACK_END_CHECK is not set
CONFIG_ARCH_HAS_DEBUG_VM_PGTABLE=y
# CONFIG_DEBUG_VM is not set
# CONFIG_DEBUG_VM_PGTABLE is not set
CONFIG_ARCH_HAS_DEBUG_VIRTUAL=y
CONFIG_DEBUG_VIRTUAL=y
CONFIG_DEBUG_MEMORY_INIT=y
# CONFIG_DEBUG_PER_CPU_MAPS is not set
CONFIG_ARCH_SUPPORTS_KMAP_LOCAL_FORCE_MAP=y
# CONFIG_DEBUG_KMAP_LOCAL_FORCE_MAP is not set
CONFIG_HAVE_ARCH_KASAN=y
CONFIG_HAVE_ARCH_KASAN_VMALLOC=y
CONFIG_CC_HAS_KASAN_GENERIC=y
CONFIG_CC_HAS_WORKING_NOSANITIZE_ADDRESS=y
# CONFIG_KASAN is not set
CONFIG_HAVE_ARCH_KFENCE=y
CONFIG_KFENCE=y
CONFIG_KFENCE_SAMPLE_INTERVAL=100
CONFIG_KFENCE_NUM_OBJECTS=255
# CONFIG_KFENCE_STATIC_KEYS is not set
CONFIG_KFENCE_STRESS_TEST_FAULTS=0
CONFIG_KFENCE_KUNIT_TEST=m
# end of Memory Debugging
# CONFIG_DEBUG_SHIRQ is not set
#
# Debug Oops, Lockups and Hangs
#
# CONFIG_PANIC_ON_OOPS is not set
CONFIG_PANIC_ON_OOPS_VALUE=0
CONFIG_PANIC_TIMEOUT=0
# CONFIG_SOFTLOCKUP_DETECTOR is not set
CONFIG_HARDLOCKUP_CHECK_TIMESTAMP=y
# CONFIG_HARDLOCKUP_DETECTOR is not set
# CONFIG_DETECT_HUNG_TASK is not set
# CONFIG_WQ_WATCHDOG is not set
# CONFIG_TEST_LOCKUP is not set
# end of Debug Oops, Lockups and Hangs
#
# Scheduler Debugging
#
# CONFIG_SCHED_DEBUG is not set
CONFIG_SCHED_INFO=y
CONFIG_SCHEDSTATS=y
# end of Scheduler Debugging
# CONFIG_DEBUG_TIMEKEEPING is not set
CONFIG_DEBUG_PREEMPT=y
#
# Lock Debugging (spinlocks, mutexes, etc...)
#
CONFIG_LOCK_DEBUGGING_SUPPORT=y
# CONFIG_PROVE_LOCKING is not set
# CONFIG_LOCK_STAT is not set
# CONFIG_DEBUG_RT_MUTEXES is not set
# CONFIG_DEBUG_SPINLOCK is not set
# CONFIG_DEBUG_MUTEXES is not set
# CONFIG_DEBUG_WW_MUTEX_SLOWPATH is not set
# CONFIG_DEBUG_RWSEMS is not set
# CONFIG_DEBUG_LOCK_ALLOC is not set
CONFIG_DEBUG_ATOMIC_SLEEP=y
# CONFIG_DEBUG_LOCKING_API_SELFTESTS is not set
CONFIG_LOCK_TORTURE_TEST=m
# CONFIG_WW_MUTEX_SELFTEST is not set
# CONFIG_SCF_TORTURE_TEST is not set
# CONFIG_CSD_LOCK_WAIT_DEBUG is not set
# end of Lock Debugging (spinlocks, mutexes, etc...)
# CONFIG_DEBUG_IRQFLAGS is not set
CONFIG_STACKTRACE=y
# CONFIG_WARN_ALL_UNSEEDED_RANDOM is not set
# CONFIG_DEBUG_KOBJECT is not set
#
# Debug kernel data structures
#
CONFIG_DEBUG_LIST=y
# CONFIG_DEBUG_PLIST is not set
# CONFIG_DEBUG_SG is not set
# CONFIG_DEBUG_NOTIFIERS is not set
# CONFIG_BUG_ON_DATA_CORRUPTION is not set
# end of Debug kernel data structures
# CONFIG_DEBUG_CREDENTIALS is not set
#
# RCU Debugging
#
CONFIG_TORTURE_TEST=m
# CONFIG_RCU_SCALE_TEST is not set
CONFIG_RCU_TORTURE_TEST=m
# CONFIG_RCU_REF_SCALE_TEST is not set
CONFIG_RCU_CPU_STALL_TIMEOUT=21
CONFIG_RCU_TRACE=y
# CONFIG_RCU_EQS_DEBUG is not set
# end of RCU Debugging
# CONFIG_DEBUG_WQ_FORCE_RR_CPU is not set
# CONFIG_CPU_HOTPLUG_STATE_CONTROL is not set
# CONFIG_LATENCYTOP is not set
CONFIG_USER_STACKTRACE_SUPPORT=y
CONFIG_NOP_TRACER=y
CONFIG_HAVE_FUNCTION_TRACER=y
CONFIG_HAVE_DYNAMIC_FTRACE=y
CONFIG_HAVE_DYNAMIC_FTRACE_WITH_REGS=y
CONFIG_HAVE_DYNAMIC_FTRACE_WITH_DIRECT_CALLS=y
CONFIG_HAVE_DYNAMIC_FTRACE_WITH_ARGS=y
CONFIG_HAVE_FTRACE_MCOUNT_RECORD=y
CONFIG_HAVE_SYSCALL_TRACEPOINTS=y
CONFIG_HAVE_FENTRY=y
CONFIG_HAVE_OBJTOOL_MCOUNT=y
CONFIG_HAVE_C_RECORDMCOUNT=y
CONFIG_TRACE_CLOCK=y
CONFIG_RING_BUFFER=y
CONFIG_EVENT_TRACING=y
CONFIG_CONTEXT_SWITCH_TRACER=y
CONFIG_TRACING=y
CONFIG_GENERIC_TRACER=y
CONFIG_TRACING_SUPPORT=y
CONFIG_FTRACE=y
# CONFIG_BOOTTIME_TRACING is not set
# CONFIG_FUNCTION_TRACER is not set
# CONFIG_STACK_TRACER is not set
# CONFIG_IRQSOFF_TRACER is not set
# CONFIG_PREEMPT_TRACER is not set
# CONFIG_SCHED_TRACER is not set
# CONFIG_HWLAT_TRACER is not set
# CONFIG_OSNOISE_TRACER is not set
# CONFIG_TIMERLAT_TRACER is not set
# CONFIG_MMIOTRACE is not set
# CONFIG_FTRACE_SYSCALLS is not set
# CONFIG_TRACER_SNAPSHOT is not set
CONFIG_BRANCH_PROFILE_NONE=y
# CONFIG_PROFILE_ANNOTATED_BRANCHES is not set
# CONFIG_PROFILE_ALL_BRANCHES is not set
CONFIG_BLK_DEV_IO_TRACE=y
CONFIG_KPROBE_EVENTS=y
CONFIG_UPROBE_EVENTS=y
CONFIG_DYNAMIC_EVENTS=y
CONFIG_PROBE_EVENTS=y
# CONFIG_SYNTH_EVENTS is not set
# CONFIG_HIST_TRIGGERS is not set
# CONFIG_TRACE_EVENT_INJECT is not set
# CONFIG_TRACEPOINT_BENCHMARK is not set
# CONFIG_RING_BUFFER_BENCHMARK is not set
# CONFIG_TRACE_EVAL_MAP_FILE is not set
# CONFIG_FTRACE_STARTUP_TEST is not set
# CONFIG_RING_BUFFER_STARTUP_TEST is not set
# CONFIG_RING_BUFFER_VALIDATE_TIME_DELTAS is not set
# CONFIG_PREEMPTIRQ_DELAY_TEST is not set
# CONFIG_KPROBE_EVENT_GEN_TEST is not set
CONFIG_PROVIDE_OHCI1394_DMA_INIT=y
# CONFIG_SAMPLES is not set
CONFIG_HAVE_SAMPLE_FTRACE_DIRECT=y
CONFIG_HAVE_SAMPLE_FTRACE_DIRECT_MULTI=y
CONFIG_ARCH_HAS_DEVMEM_IS_ALLOWED=y
CONFIG_STRICT_DEVMEM=y
# CONFIG_IO_STRICT_DEVMEM is not set
#
# x86 Debugging
#
CONFIG_TRACE_IRQFLAGS_NMI_SUPPORT=y
CONFIG_EARLY_PRINTK_USB=y
CONFIG_X86_VERBOSE_BOOTUP=y
CONFIG_EARLY_PRINTK=y
CONFIG_EARLY_PRINTK_DBGP=y
# CONFIG_EARLY_PRINTK_USB_XDBC is not set
# CONFIG_EFI_PGT_DUMP is not set
# CONFIG_DEBUG_TLBFLUSH is not set
CONFIG_HAVE_MMIOTRACE_SUPPORT=y
# CONFIG_X86_DECODER_SELFTEST is not set
CONFIG_IO_DELAY_0X80=y
# CONFIG_IO_DELAY_0XED is not set
# CONFIG_IO_DELAY_UDELAY is not set
# CONFIG_IO_DELAY_NONE is not set
CONFIG_DEBUG_BOOT_PARAMS=y
# CONFIG_CPA_DEBUG is not set
CONFIG_DEBUG_ENTRY=y
# CONFIG_DEBUG_NMI_SELFTEST is not set
CONFIG_X86_DEBUG_FPU=y
# CONFIG_PUNIT_ATOM_DEBUG is not set
CONFIG_UNWINDER_ORC=y
# CONFIG_UNWINDER_FRAME_POINTER is not set
# CONFIG_UNWINDER_GUESS is not set
# end of x86 Debugging
#
# Kernel Testing and Coverage
#
CONFIG_KUNIT=y
CONFIG_KUNIT_DEBUGFS=y
# CONFIG_KUNIT_TEST is not set
# CONFIG_KUNIT_EXAMPLE_TEST is not set
# CONFIG_KUNIT_ALL_TESTS is not set
# CONFIG_NOTIFIER_ERROR_INJECTION is not set
CONFIG_FUNCTION_ERROR_INJECTION=y
# CONFIG_FAULT_INJECTION is not set
CONFIG_ARCH_HAS_KCOV=y
CONFIG_CC_HAS_SANCOV_TRACE_PC=y
CONFIG_KCOV=y
# CONFIG_KCOV_ENABLE_COMPARISONS is not set
CONFIG_KCOV_INSTRUMENT_ALL=y
CONFIG_KCOV_IRQ_AREA_SIZE=0x40000
CONFIG_RUNTIME_TESTING_MENU=y
CONFIG_LKDTM=m
CONFIG_TEST_LIST_SORT=m
# CONFIG_TEST_MIN_HEAP is not set
CONFIG_TEST_SORT=m
# CONFIG_TEST_DIV64 is not set
# CONFIG_KPROBES_SANITY_TEST is not set
# CONFIG_BACKTRACE_SELF_TEST is not set
# CONFIG_RBTREE_TEST is not set
# CONFIG_REED_SOLOMON_TEST is not set
# CONFIG_INTERVAL_TREE_TEST is not set
# CONFIG_PERCPU_TEST is not set
# CONFIG_ATOMIC64_SELFTEST is not set
CONFIG_TEST_HEXDUMP=m
# CONFIG_STRING_SELFTEST is not set
CONFIG_TEST_STRING_HELPERS=m
CONFIG_TEST_STRSCPY=m
CONFIG_TEST_KSTRTOX=m
CONFIG_TEST_PRINTF=m
# CONFIG_TEST_SCANF is not set
CONFIG_TEST_BITMAP=m
CONFIG_TEST_UUID=m
CONFIG_TEST_XARRAY=m
CONFIG_TEST_OVERFLOW=m
CONFIG_TEST_RHASHTABLE=m
CONFIG_TEST_HASH=m
CONFIG_TEST_IDA=m
CONFIG_TEST_LKM=m
# CONFIG_TEST_BITOPS is not set
CONFIG_TEST_VMALLOC=m
CONFIG_TEST_USER_COPY=m
CONFIG_TEST_BPF=m
# CONFIG_TEST_BLACKHOLE_DEV is not set
# CONFIG_FIND_BIT_BENCHMARK is not set
CONFIG_TEST_FIRMWARE=m
CONFIG_TEST_SYSCTL=m
# CONFIG_BITFIELD_KUNIT is not set
# CONFIG_RESOURCE_KUNIT_TEST is not set
# CONFIG_SYSCTL_KUNIT_TEST is not set
# CONFIG_LIST_KUNIT_TEST is not set
# CONFIG_LINEAR_RANGES_TEST is not set
# CONFIG_CMDLINE_KUNIT_TEST is not set
# CONFIG_BITS_TEST is not set
# CONFIG_SLUB_KUNIT_TEST is not set
# CONFIG_RATIONAL_KUNIT_TEST is not set
# CONFIG_MEMCPY_KUNIT_TEST is not set
CONFIG_TEST_UDELAY=m
CONFIG_TEST_STATIC_KEYS=m
CONFIG_TEST_KMOD=m
# CONFIG_TEST_DEBUG_VIRTUAL is not set
CONFIG_TEST_MEMCAT_P=m
CONFIG_TEST_STACKINIT=m
# CONFIG_TEST_MEMINIT is not set
# CONFIG_TEST_FREE_PAGES is not set
# CONFIG_TEST_CLOCKSOURCE_WATCHDOG is not set
CONFIG_ARCH_USE_MEMTEST=y
# CONFIG_MEMTEST is not set
# end of Kernel Testing and Coverage
# end of Kernel hacking
^ permalink raw reply [flat|nested] 34+ messages in thread
* Re: [PATCH v2 8/9] atomic,x86: Alternative atomic_*_overflow() scheme
2021-12-10 16:53 ` Linus Torvalds
2021-12-10 17:27 ` Linus Torvalds
@ 2021-12-17 3:38 ` Herbert Xu
1 sibling, 0 replies; 34+ messages in thread
From: Herbert Xu @ 2021-12-17 3:38 UTC (permalink / raw)
To: Linus Torvalds
Cc: peterz, will, boqun.feng, linux-kernel, x86, mark.rutland, elver,
keescook, hch, axboe
Linus Torvalds <torvalds@linux-foundation.org> wrote:
>
> That said - it may not matter - I'm not sure a plain "dec" is even a
> valid operation on a ref in the first place. How could you ever
> validly decrement a ref without checking for it being the last entry?
There are actual spots in the network stack where we know we're
holding multiple reference counts to a given object and in those
cases an unconditional "dec" could make sense. For example, we may
have an object that we obtained from a hash lookup, giving us a
reference count, which we then try to remove from a linked list,
also containing a referencnce count to it. While still holding
the referencnce count from the hash lookup, the linked list
referencnce count could be dropped with a plain "dec".
Of course we might be better off redesigning things to eliminate
reference counts completely but such code does still exist.
Cheers,
--
Email: Herbert Xu <herbert@gondor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
^ permalink raw reply [flat|nested] 34+ messages in thread
end of thread, other threads:[~2021-12-17 3:38 UTC | newest]
Thread overview: 34+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2021-12-10 16:16 [PATCH v2 0/9] refcount: Improve code-gen Peter Zijlstra
2021-12-10 16:16 ` [PATCH v2 1/9] atomic: Prepare scripts for macro ops Peter Zijlstra
2021-12-10 17:27 ` Mark Rutland
2021-12-10 17:43 ` Marco Elver
2021-12-10 16:16 ` [PATCH v2 2/9] atomic: Add xchg.tbl Peter Zijlstra
2021-12-13 9:50 ` Mark Rutland
2021-12-10 16:16 ` [PATCH v2 3/9] atomic: Introduce atomic_{inc,dec,dec_and_test}_overflow() Peter Zijlstra
2021-12-13 10:06 ` Mark Rutland
2021-12-13 10:57 ` Peter Zijlstra
2021-12-13 10:59 ` Peter Zijlstra
2021-12-13 11:09 ` Mark Rutland
2021-12-10 16:16 ` [PATCH v2 4/9] refcount: Use atomic_*_overflow() Peter Zijlstra
2021-12-13 10:35 ` Mark Rutland
2021-12-10 16:16 ` [PATCH v2 5/9] atomic,x86: Implement atomic_dec_and_test_overflow() Peter Zijlstra
2021-12-13 11:04 ` Mark Rutland
2021-12-10 16:16 ` [PATCH v2 6/9] refcount: Fix refcount_dec_not_one() Peter Zijlstra
2021-12-10 16:16 ` [PATCH v2 7/9] refcount: Prepare for atomic_*_overflow() offsets Peter Zijlstra
2021-12-10 16:16 ` [PATCH v2 8/9] atomic,x86: Alternative atomic_*_overflow() scheme Peter Zijlstra
2021-12-10 16:53 ` Linus Torvalds
2021-12-10 17:27 ` Linus Torvalds
2021-12-17 3:38 ` Herbert Xu
2021-12-13 16:43 ` Peter Zijlstra
2021-12-13 17:29 ` Marco Elver
2021-12-13 18:11 ` Linus Torvalds
2021-12-13 18:18 ` Marco Elver
2021-12-13 18:24 ` Linus Torvalds
2021-12-13 19:35 ` Marco Elver
2021-12-13 18:21 ` Linus Torvalds
2021-12-10 16:16 ` [PATCH v2 9/9] refcount: Optimize __refcount_add_not_zero(.i=1) Peter Zijlstra
2021-12-10 19:37 ` [PATCH v2 0/9] refcount: Improve code-gen Peter Zijlstra
2021-12-13 12:15 ` [PATCH v2 10/9] atomic: Document the atomic_{}_overflow() functions Peter Zijlstra
2021-12-13 12:20 ` [PATCH v2 0/9] refcount: Improve code-gen Peter Zijlstra
2021-12-13 14:42 ` Marco Elver
2021-12-13 16:11 ` Peter Zijlstra
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).