From: Peter Zijlstra <peterz@infradead.org>
To: torvalds@linux-foundation.org
Cc: corbet@lwn.net, will@kernel.org, peterz@infradead.org,
boqun.feng@gmail.com, mark.rutland@arm.com,
catalin.marinas@arm.com, dennis@kernel.org, tj@kernel.org,
cl@linux.com, hca@linux.ibm.com, gor@linux.ibm.com,
agordeev@linux.ibm.com, borntraeger@linux.ibm.com,
svens@linux.ibm.com, tglx@linutronix.de, mingo@redhat.com,
bp@alien8.de, dave.hansen@linux.intel.com, x86@kernel.org,
hpa@zytor.com, joro@8bytes.org, suravee.suthikulpanit@amd.com,
robin.murphy@arm.com, dwmw2@infradead.org,
baolu.lu@linux.intel.com, Arnd Bergmann <arnd@arndb.de>,
Herbert Xu <herbert@gondor.apana.org.au>,
davem@davemloft.net, penberg@kernel.org, rientjes@google.com,
iamjoonsoo.kim@lge.com, Andrew Morton <akpm@linux-foundation.org>,
vbabka@suse.cz, roman.gushchin@linux.dev, 42.hyeyoo@gmail.com,
linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-mm@kvack.org, linux-s390@vger.kernel.org,
iommu@lists.linux.dev, linux-arch@vger.kernel.org,
linux-crypto@vger.kernel.org, sfr@canb.auug.org.au,
mpe@ellerman.id.au, James.Bottomley@hansenpartnership.com,
deller@gmx.de, linux-parisc@vger.kernel.org
Subject: [PATCH 04/12] instrumentation: Wire up cmpxchg128()
Date: Wed, 31 May 2023 15:08:37 +0200 [thread overview]
Message-ID: <20230531132323.519237070@infradead.org> (raw)
In-Reply-To: 20230531130833.635651916@infradead.org
Wire up the cmpxchg128 family in the atomic wrapper scripts.
These provide the generic cmpxchg128 family of functions from the
arch_ prefixed version, adding explicit instrumentation where needed.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Mark Rutland <mark.rutland@arm.com>
---
include/linux/atomic/atomic-arch-fallback.h | 95 +++++++++++++++++++++++++++-
include/linux/atomic/atomic-instrumented.h | 86 +++++++++++++++++++++++++
scripts/atomic/gen-atomic-fallback.sh | 4 -
scripts/atomic/gen-atomic-instrumented.sh | 4 -
4 files changed, 183 insertions(+), 6 deletions(-)
--- a/include/linux/atomic/atomic-arch-fallback.h
+++ b/include/linux/atomic/atomic-arch-fallback.h
@@ -77,6 +77,29 @@
#endif /* arch_cmpxchg64_relaxed */
+#ifndef arch_cmpxchg128_relaxed
+#define arch_cmpxchg128_acquire arch_cmpxchg128
+#define arch_cmpxchg128_release arch_cmpxchg128
+#define arch_cmpxchg128_relaxed arch_cmpxchg128
+#else /* arch_cmpxchg128_relaxed */
+
+#ifndef arch_cmpxchg128_acquire
+#define arch_cmpxchg128_acquire(...) \
+ __atomic_op_acquire(arch_cmpxchg128, __VA_ARGS__)
+#endif
+
+#ifndef arch_cmpxchg128_release
+#define arch_cmpxchg128_release(...) \
+ __atomic_op_release(arch_cmpxchg128, __VA_ARGS__)
+#endif
+
+#ifndef arch_cmpxchg128
+#define arch_cmpxchg128(...) \
+ __atomic_op_fence(arch_cmpxchg128, __VA_ARGS__)
+#endif
+
+#endif /* arch_cmpxchg128_relaxed */
+
#ifndef arch_try_cmpxchg_relaxed
#ifdef arch_try_cmpxchg
#define arch_try_cmpxchg_acquire arch_try_cmpxchg
@@ -217,6 +240,76 @@
#endif /* arch_try_cmpxchg64_relaxed */
+#ifndef arch_try_cmpxchg128_relaxed
+#ifdef arch_try_cmpxchg128
+#define arch_try_cmpxchg128_acquire arch_try_cmpxchg128
+#define arch_try_cmpxchg128_release arch_try_cmpxchg128
+#define arch_try_cmpxchg128_relaxed arch_try_cmpxchg128
+#endif /* arch_try_cmpxchg128 */
+
+#ifndef arch_try_cmpxchg128
+#define arch_try_cmpxchg128(_ptr, _oldp, _new) \
+({ \
+ typeof(*(_ptr)) *___op = (_oldp), ___o = *___op, ___r; \
+ ___r = arch_cmpxchg128((_ptr), ___o, (_new)); \
+ if (unlikely(___r != ___o)) \
+ *___op = ___r; \
+ likely(___r == ___o); \
+})
+#endif /* arch_try_cmpxchg128 */
+
+#ifndef arch_try_cmpxchg128_acquire
+#define arch_try_cmpxchg128_acquire(_ptr, _oldp, _new) \
+({ \
+ typeof(*(_ptr)) *___op = (_oldp), ___o = *___op, ___r; \
+ ___r = arch_cmpxchg128_acquire((_ptr), ___o, (_new)); \
+ if (unlikely(___r != ___o)) \
+ *___op = ___r; \
+ likely(___r == ___o); \
+})
+#endif /* arch_try_cmpxchg128_acquire */
+
+#ifndef arch_try_cmpxchg128_release
+#define arch_try_cmpxchg128_release(_ptr, _oldp, _new) \
+({ \
+ typeof(*(_ptr)) *___op = (_oldp), ___o = *___op, ___r; \
+ ___r = arch_cmpxchg128_release((_ptr), ___o, (_new)); \
+ if (unlikely(___r != ___o)) \
+ *___op = ___r; \
+ likely(___r == ___o); \
+})
+#endif /* arch_try_cmpxchg128_release */
+
+#ifndef arch_try_cmpxchg128_relaxed
+#define arch_try_cmpxchg128_relaxed(_ptr, _oldp, _new) \
+({ \
+ typeof(*(_ptr)) *___op = (_oldp), ___o = *___op, ___r; \
+ ___r = arch_cmpxchg128_relaxed((_ptr), ___o, (_new)); \
+ if (unlikely(___r != ___o)) \
+ *___op = ___r; \
+ likely(___r == ___o); \
+})
+#endif /* arch_try_cmpxchg128_relaxed */
+
+#else /* arch_try_cmpxchg128_relaxed */
+
+#ifndef arch_try_cmpxchg128_acquire
+#define arch_try_cmpxchg128_acquire(...) \
+ __atomic_op_acquire(arch_try_cmpxchg128, __VA_ARGS__)
+#endif
+
+#ifndef arch_try_cmpxchg128_release
+#define arch_try_cmpxchg128_release(...) \
+ __atomic_op_release(arch_try_cmpxchg128, __VA_ARGS__)
+#endif
+
+#ifndef arch_try_cmpxchg128
+#define arch_try_cmpxchg128(...) \
+ __atomic_op_fence(arch_try_cmpxchg128, __VA_ARGS__)
+#endif
+
+#endif /* arch_try_cmpxchg128_relaxed */
+
#ifndef arch_try_cmpxchg_local
#define arch_try_cmpxchg_local(_ptr, _oldp, _new) \
({ \
@@ -2668,4 +2761,4 @@ arch_atomic64_dec_if_positive(atomic64_t
#endif
#endif /* _LINUX_ATOMIC_FALLBACK_H */
-// ad2e2b4d168dbc60a73922616047a9bfa446af36
+// 52dfc6fe4a2e7234bbd2aa3e16a377c1db793a53
--- a/include/linux/atomic/atomic-instrumented.h
+++ b/include/linux/atomic/atomic-instrumented.h
@@ -2034,6 +2034,36 @@ atomic_long_dec_if_positive(atomic_long_
arch_cmpxchg64_relaxed(__ai_ptr, __VA_ARGS__); \
})
+#define cmpxchg128(ptr, ...) \
+({ \
+ typeof(ptr) __ai_ptr = (ptr); \
+ kcsan_mb(); \
+ instrument_atomic_read_write(__ai_ptr, sizeof(*__ai_ptr)); \
+ arch_cmpxchg128(__ai_ptr, __VA_ARGS__); \
+})
+
+#define cmpxchg128_acquire(ptr, ...) \
+({ \
+ typeof(ptr) __ai_ptr = (ptr); \
+ instrument_atomic_read_write(__ai_ptr, sizeof(*__ai_ptr)); \
+ arch_cmpxchg128_acquire(__ai_ptr, __VA_ARGS__); \
+})
+
+#define cmpxchg128_release(ptr, ...) \
+({ \
+ typeof(ptr) __ai_ptr = (ptr); \
+ kcsan_release(); \
+ instrument_atomic_read_write(__ai_ptr, sizeof(*__ai_ptr)); \
+ arch_cmpxchg128_release(__ai_ptr, __VA_ARGS__); \
+})
+
+#define cmpxchg128_relaxed(ptr, ...) \
+({ \
+ typeof(ptr) __ai_ptr = (ptr); \
+ instrument_atomic_read_write(__ai_ptr, sizeof(*__ai_ptr)); \
+ arch_cmpxchg128_relaxed(__ai_ptr, __VA_ARGS__); \
+})
+
#define try_cmpxchg(ptr, oldp, ...) \
({ \
typeof(ptr) __ai_ptr = (ptr); \
@@ -2110,6 +2140,44 @@ atomic_long_dec_if_positive(atomic_long_
arch_try_cmpxchg64_relaxed(__ai_ptr, __ai_oldp, __VA_ARGS__); \
})
+#define try_cmpxchg128(ptr, oldp, ...) \
+({ \
+ 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_cmpxchg128(__ai_ptr, __ai_oldp, __VA_ARGS__); \
+})
+
+#define try_cmpxchg128_acquire(ptr, oldp, ...) \
+({ \
+ typeof(ptr) __ai_ptr = (ptr); \
+ typeof(oldp) __ai_oldp = (oldp); \
+ instrument_atomic_read_write(__ai_ptr, sizeof(*__ai_ptr)); \
+ instrument_read_write(__ai_oldp, sizeof(*__ai_oldp)); \
+ arch_try_cmpxchg128_acquire(__ai_ptr, __ai_oldp, __VA_ARGS__); \
+})
+
+#define try_cmpxchg128_release(ptr, oldp, ...) \
+({ \
+ 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_cmpxchg128_release(__ai_ptr, __ai_oldp, __VA_ARGS__); \
+})
+
+#define try_cmpxchg128_relaxed(ptr, oldp, ...) \
+({ \
+ typeof(ptr) __ai_ptr = (ptr); \
+ typeof(oldp) __ai_oldp = (oldp); \
+ instrument_atomic_read_write(__ai_ptr, sizeof(*__ai_ptr)); \
+ instrument_read_write(__ai_oldp, sizeof(*__ai_oldp)); \
+ arch_try_cmpxchg128_relaxed(__ai_ptr, __ai_oldp, __VA_ARGS__); \
+})
+
#define cmpxchg_local(ptr, ...) \
({ \
typeof(ptr) __ai_ptr = (ptr); \
@@ -2124,6 +2192,13 @@ atomic_long_dec_if_positive(atomic_long_
arch_cmpxchg64_local(__ai_ptr, __VA_ARGS__); \
})
+#define cmpxchg128_local(ptr, ...) \
+({ \
+ typeof(ptr) __ai_ptr = (ptr); \
+ instrument_atomic_read_write(__ai_ptr, sizeof(*__ai_ptr)); \
+ arch_cmpxchg128_local(__ai_ptr, __VA_ARGS__); \
+})
+
#define sync_cmpxchg(ptr, ...) \
({ \
typeof(ptr) __ai_ptr = (ptr); \
@@ -2150,6 +2225,15 @@ atomic_long_dec_if_positive(atomic_long_
arch_try_cmpxchg64_local(__ai_ptr, __ai_oldp, __VA_ARGS__); \
})
+#define try_cmpxchg128_local(ptr, oldp, ...) \
+({ \
+ typeof(ptr) __ai_ptr = (ptr); \
+ typeof(oldp) __ai_oldp = (oldp); \
+ instrument_atomic_read_write(__ai_ptr, sizeof(*__ai_ptr)); \
+ instrument_read_write(__ai_oldp, sizeof(*__ai_oldp)); \
+ arch_try_cmpxchg128_local(__ai_ptr, __ai_oldp, __VA_ARGS__); \
+})
+
#define cmpxchg_double(ptr, ...) \
({ \
typeof(ptr) __ai_ptr = (ptr); \
@@ -2167,4 +2251,4 @@ atomic_long_dec_if_positive(atomic_long_
})
#endif /* _LINUX_ATOMIC_INSTRUMENTED_H */
-// 6b513a42e1a1b5962532a019b7fc91eaa044ad5e
+// 82d1be694fab30414527d0877c29fa75ed5a0b74
--- a/scripts/atomic/gen-atomic-fallback.sh
+++ b/scripts/atomic/gen-atomic-fallback.sh
@@ -217,11 +217,11 @@ cat << EOF
EOF
-for xchg in "arch_xchg" "arch_cmpxchg" "arch_cmpxchg64"; do
+for xchg in "arch_xchg" "arch_cmpxchg" "arch_cmpxchg64" "arch_cmpxchg128"; do
gen_xchg_fallbacks "${xchg}"
done
-for cmpxchg in "cmpxchg" "cmpxchg64"; do
+for cmpxchg in "cmpxchg" "cmpxchg64" "cmpxchg128"; do
gen_try_cmpxchg_fallbacks "${cmpxchg}"
done
--- a/scripts/atomic/gen-atomic-instrumented.sh
+++ b/scripts/atomic/gen-atomic-instrumented.sh
@@ -166,14 +166,14 @@ grep '^[a-z]' "$1" | while read name met
done
-for xchg in "xchg" "cmpxchg" "cmpxchg64" "try_cmpxchg" "try_cmpxchg64"; do
+for xchg in "xchg" "cmpxchg" "cmpxchg64" "cmpxchg128" "try_cmpxchg" "try_cmpxchg64" "try_cmpxchg128"; do
for order in "" "_acquire" "_release" "_relaxed"; do
gen_xchg "${xchg}" "${order}" ""
printf "\n"
done
done
-for xchg in "cmpxchg_local" "cmpxchg64_local" "sync_cmpxchg" "try_cmpxchg_local" "try_cmpxchg64_local" ; do
+for xchg in "cmpxchg_local" "cmpxchg64_local" "cmpxchg128_local" "sync_cmpxchg" "try_cmpxchg_local" "try_cmpxchg64_local" "try_cmpxchg128_local"; do
gen_xchg "${xchg}" "" ""
printf "\n"
done
next prev parent reply other threads:[~2023-05-31 13:28 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-05-31 13:08 [PATCH 00/12] Introduce cmpxchg128() -- aka. the demise of cmpxchg_double() Peter Zijlstra
2023-05-31 13:08 ` [PATCH 01/12] cyrpto/b128ops: Remove struct u128 Peter Zijlstra
2023-05-31 13:08 ` [PATCH 02/12] types: Introduce [us]128 Peter Zijlstra
2023-05-31 13:08 ` [PATCH 03/12] arch: Introduce arch_{,try_}_cmpxchg128{,_local}() Peter Zijlstra
2023-05-31 13:08 ` Peter Zijlstra [this message]
2023-05-31 13:08 ` [PATCH 05/12] percpu: Add {raw,this}_cpu_try_cmpxchg() Peter Zijlstra
2023-06-09 16:10 ` [PATCH v2 5/12] " Konrad Dybcio
2023-06-09 16:13 ` Nathan Chancellor
2023-06-09 16:20 ` Konrad Dybcio
2023-05-31 13:08 ` [PATCH 06/12] percpu: Wire up cmpxchg128 Peter Zijlstra
2023-05-31 13:08 ` [PATCH 07/12] percpu: #ifndef __SIZEOF_INT128__ Peter Zijlstra
2023-05-31 14:21 ` Arnd Bergmann
2023-05-31 15:50 ` Peter Zijlstra
2023-06-01 10:14 ` [PATCH v2 07/12] parisc/percpu: Work around the lack of __SIZEOF_INT128__ Peter Zijlstra
2023-06-01 10:32 ` Helge Deller
2023-06-01 10:50 ` Peter Zijlstra
2023-06-01 21:08 ` Sam James
2023-06-01 13:29 ` Linus Torvalds
2023-06-01 17:38 ` Masahiro Yamada
2023-06-02 14:39 ` Peter Zijlstra
2023-06-02 14:50 ` Mark Rutland
2023-06-02 16:09 ` Linus Torvalds
2023-06-02 17:00 ` H. Peter Anvin
2023-06-02 19:10 ` Peter Zijlstra
2023-06-02 19:20 ` H. Peter Anvin
2023-06-02 19:40 ` Peter Zijlstra
2023-06-02 19:57 ` Linus Torvalds
2023-06-02 20:42 ` Helge Deller
2023-05-31 13:08 ` [PATCH 08/12] x86,amd_iommu: Replace cmpxchg_double() Peter Zijlstra
2023-05-31 13:08 ` [PATCH 09/12] x86,intel_iommu: " Peter Zijlstra
2023-05-31 13:08 ` [PATCH 10/12] slub: " Peter Zijlstra
2023-05-31 13:08 ` [PATCH 11/12] arch: Remove cmpxchg_double Peter Zijlstra
2023-05-31 13:08 ` [PATCH 12/12] s390/cpum_sf: Convert to cmpxchg128() Peter Zijlstra
2023-05-31 14:47 ` [PATCH 00/12] Introduce cmpxchg128() -- aka. the demise of cmpxchg_double() Mark Rutland
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