* [RFC PATCH 0/7] Kconfig debug options
@ 2016-05-02 4:10 Doug Goldstein
2016-05-02 4:10 ` [RFC PATCH 1/7] build: add debug menu to Kconfig Doug Goldstein
` (6 more replies)
0 siblings, 7 replies; 17+ messages in thread
From: Doug Goldstein @ 2016-05-02 4:10 UTC (permalink / raw)
To: xen-devel
Cc: Stefano Stabellini, Wei Liu, George Dunlap, Andrew Cooper,
Doug Goldstein, Tim Deegan, Jan Beulich, Ian Jackson
Rough cut at converting the debug options from xen/Rules.mk to Kconfig.
This initial version won't have descriptions for all the different
options in the Kconfig.debug file. If people want to suggest some that
would be great but mostly I'm just looking to confirm that this menu
and the inter-dependence of the items is acceptable.
The big departure from Rules.mk is how NDEBUG is turned on (or isn't).
Basically if you enable the debug menu at all it will not turn on NDEBUG.
Previously this was only done when you supplied 'debug=n'. The inverse,
'debug=y' did 'verbose=y' and 'frame_pointer=y' so they were linked but
differently.
Doug Goldstein (7):
build: add debug menu to Kconfig
build: convert crash_debug to Kconfig
build: convert verbose to Kconfig
build: convert frame_pointer to Kconfig
build: wire up pre-existing debug build flag
build: convert perfc{,_arrays} to Kconfig
build: convert lock_profile to Kconfig
INSTALL | 6 -----
docs/misc/crashdb.txt | 4 +--
xen/Kconfig | 2 ++
xen/Kconfig.debug | 56 +++++++++++++++++++++++++++++++++++++++
xen/Makefile | 1 +
xen/Rules.mk | 28 +++-----------------
xen/arch/arm/kernel.c | 2 +-
xen/arch/arm/xen.lds.S | 2 +-
xen/arch/x86/Makefile | 3 +--
xen/arch/x86/domain.c | 2 +-
xen/arch/x86/domain_build.c | 2 +-
xen/arch/x86/hvm/hvm.c | 2 +-
xen/arch/x86/time.c | 4 +--
xen/arch/x86/x86_64/Makefile | 2 +-
xen/arch/x86/x86_64/asm-offsets.c | 2 +-
xen/arch/x86/xen.lds.S | 2 +-
xen/common/Makefile | 4 +--
xen/common/keyhandler.c | 4 +--
xen/common/perfc.c | 2 +-
xen/common/spinlock.c | 10 +++----
xen/common/sysctl.c | 4 +--
xen/include/asm-x86/asm_defns.h | 2 +-
xen/include/asm-x86/debugger.h | 2 +-
xen/include/asm-x86/domain.h | 2 +-
xen/include/xen/config.h | 4 +++
xen/include/xen/gdbstub.h | 2 +-
xen/include/xen/perfc.h | 8 +++---
xen/include/xen/sched.h | 2 +-
xen/include/xen/spinlock.h | 4 +--
xen/include/xsm/dummy.h | 2 +-
30 files changed, 104 insertions(+), 68 deletions(-)
create mode 100644 xen/Kconfig.debug
--
CC: Andrew Cooper <andrew.cooper3@citrix.com>
CC: George Dunlap <George.Dunlap@eu.citrix.com>
CC: Ian Jackson <ian.jackson@eu.citrix.com>
CC: Jan Beulich <jbeulich@suse.com>
CC: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
CC: Stefano Stabellini <sstabellini@kernel.org>
CC: Tim Deegan <tim@xen.org>
CC: Wei Liu <wei.liu2@citrix.com>
--
2.7.3
_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xen.org
http://lists.xen.org/xen-devel
^ permalink raw reply [flat|nested] 17+ messages in thread
* [RFC PATCH 1/7] build: add debug menu to Kconfig
2016-05-02 4:10 [RFC PATCH 0/7] Kconfig debug options Doug Goldstein
@ 2016-05-02 4:10 ` Doug Goldstein
2016-05-02 10:42 ` Wei Liu
2016-05-02 4:10 ` [RFC PATCH 2/7] build: convert crash_debug " Doug Goldstein
` (5 subsequent siblings)
6 siblings, 1 reply; 17+ messages in thread
From: Doug Goldstein @ 2016-05-02 4:10 UTC (permalink / raw)
To: xen-devel
Cc: Stefano Stabellini, Wei Liu, George Dunlap, Andrew Cooper,
Doug Goldstein, Tim Deegan, Jan Beulich, Ian Jackson
There are a number of debugging options for Xen so the idea is to have a
menu to group them all together. Enabling this menu item will also
disable NDEBUG which will result in more debug prints. This was
previously wired into the 'debug=y' command line option.
Signed-off-by: Doug Goldstein <cardoe@cardoe.com>
---
CC: Andrew Cooper <andrew.cooper3@citrix.com>
CC: George Dunlap <George.Dunlap@eu.citrix.com>
CC: Ian Jackson <ian.jackson@eu.citrix.com>
CC: Jan Beulich <jbeulich@suse.com>
CC: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
CC: Stefano Stabellini <sstabellini@kernel.org>
CC: Tim Deegan <tim@xen.org>
CC: Wei Liu <wei.liu2@citrix.com>
---
xen/Kconfig | 2 ++
xen/Kconfig.debug | 7 +++++++
xen/include/xen/config.h | 4 ++++
3 files changed, 13 insertions(+)
create mode 100644 xen/Kconfig.debug
diff --git a/xen/Kconfig b/xen/Kconfig
index fa8b27c..0fe7a1a 100644
--- a/xen/Kconfig
+++ b/xen/Kconfig
@@ -26,3 +26,5 @@ config DEFCONFIG_LIST
config EXPERT
string
option env="XEN_CONFIG_EXPERT"
+
+source "Kconfig.debug"
diff --git a/xen/Kconfig.debug b/xen/Kconfig.debug
new file mode 100644
index 0000000..d14d758
--- /dev/null
+++ b/xen/Kconfig.debug
@@ -0,0 +1,7 @@
+
+menuconfig DEBUG
+ bool "Debugging Options"
+ ---help---
+ If you want to debug Xen say Y and select any additional debugging
+ support options. This enables additional debugging through Xen
+ and as a result enabling this option results in no security guarantees.
diff --git a/xen/include/xen/config.h b/xen/include/xen/config.h
index ef6e5ee..473c5e8 100644
--- a/xen/include/xen/config.h
+++ b/xen/include/xen/config.h
@@ -81,4 +81,8 @@
/* allow existing code to work with Kconfig variable */
#define NR_CPUS CONFIG_NR_CPUS
+#ifndef CONFIG_DEBUG
+#define NDEBUG
+#endif
+
#endif /* __XEN_CONFIG_H__ */
--
2.7.3
_______________________________________________
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Xen-devel@lists.xen.org
http://lists.xen.org/xen-devel
^ permalink raw reply related [flat|nested] 17+ messages in thread
* [RFC PATCH 2/7] build: convert crash_debug to Kconfig
2016-05-02 4:10 [RFC PATCH 0/7] Kconfig debug options Doug Goldstein
2016-05-02 4:10 ` [RFC PATCH 1/7] build: add debug menu to Kconfig Doug Goldstein
@ 2016-05-02 4:10 ` Doug Goldstein
2016-05-02 4:10 ` [RFC PATCH 3/7] build: convert verbose " Doug Goldstein
` (4 subsequent siblings)
6 siblings, 0 replies; 17+ messages in thread
From: Doug Goldstein @ 2016-05-02 4:10 UTC (permalink / raw)
To: xen-devel; +Cc: Andrew Cooper, Doug Goldstein, Jan Beulich
Convert the crash_debug option to Kconfig as CONFIG_CRASH_DEBUG. This
was previously togglable on the command line so this adds a message for
users enabling it from the command line to tell them to enable it from
make menuconfig.
Signed-off-by: Doug Goldstein <cardoe@cardoe.com>
---
CC: Jan Beulich <jbeulich@suse.com>
CC: Andrew Cooper <andrew.cooper3@citrix.com>
---
INSTALL | 1 -
docs/misc/crashdb.txt | 4 ++--
xen/Kconfig.debug | 11 +++++++++++
xen/Rules.mk | 5 +++--
xen/arch/x86/Makefile | 3 +--
xen/arch/x86/x86_64/Makefile | 2 +-
xen/common/Makefile | 2 +-
xen/include/asm-x86/debugger.h | 2 +-
xen/include/xen/gdbstub.h | 2 +-
9 files changed, 21 insertions(+), 11 deletions(-)
diff --git a/INSTALL b/INSTALL
index 95fa94d..2974b9b 100644
--- a/INSTALL
+++ b/INSTALL
@@ -231,7 +231,6 @@ verbose=y
perfc=y
perfc_arrays=y
lock_profile=y
-crash_debug=y
frame_pointer=y
lto=y
diff --git a/docs/misc/crashdb.txt b/docs/misc/crashdb.txt
index b41a538..9733666 100644
--- a/docs/misc/crashdb.txt
+++ b/docs/misc/crashdb.txt
@@ -5,7 +5,7 @@ Xen has a simple gdb stub for doing post-mortem debugging i.e. once
you've crashed it, you get to poke around and find out why. There's
also a special key handler for making it crash, which is handy.
-You need to have crash_debug=y set when compiling , and you also need
+You need to have CRASH_DEBUG=y set when compiling, and you also need
to enable it on the Xen command line, eg by gdb=com1.
If you need to have a serial port shared between gdb and the console,
@@ -19,7 +19,7 @@ if you have a simple null modem connection between the test box and
the workstation, and aren't using a H/L split console:
* Set debug=y in Config.mk
- * Set crash_debug=y in xen/Rules.mk
+ * Set CRASH_DEBUG=y with `make -C xen menuconfig`
* Make the changes in the attached patch, and build.
* Arrange to pass gdb=com1 as a hypervisor command line argument
(I already have com1=38400,8n1 console=com1,vga sync_console)
diff --git a/xen/Kconfig.debug b/xen/Kconfig.debug
index d14d758..ee68f0d 100644
--- a/xen/Kconfig.debug
+++ b/xen/Kconfig.debug
@@ -5,3 +5,14 @@ menuconfig DEBUG
If you want to debug Xen say Y and select any additional debugging
support options. This enables additional debugging through Xen
and as a result enabling this option results in no security guarantees.
+
+if DEBUG
+
+config CRASH_DEBUG
+ bool "Crash Debugging Support"
+ depends on X86
+ ---help---
+ If you want to be able to attach gdb to Xen to be able to debug
+ Xen if it crashes then say Y.
+
+endif # DEBUG
diff --git a/xen/Rules.mk b/xen/Rules.mk
index 961d533..c044fd1 100644
--- a/xen/Rules.mk
+++ b/xen/Rules.mk
@@ -7,7 +7,6 @@ verbose ?= n
perfc ?= n
perfc_arrays ?= n
lock_profile ?= n
-crash_debug ?= n
frame_pointer ?= n
lto ?= n
@@ -30,6 +29,9 @@ endif
ifneq ($(origin kexec),undefined)
$(error "You must use 'make menuconfig' to enable/disable kexec now.")
endif
+ifneq ($(origin crash_debug),undefined)
+$(error "You must use 'make menuconfig' to enable/disable crash_debug now.")
+endif
# Set ARCH/SUBARCH appropriately.
override TARGET_SUBARCH := $(XEN_TARGET_ARCH)
@@ -58,7 +60,6 @@ CFLAGS += -Wa,--strip-local-absolute
endif
CFLAGS-$(verbose) += -DVERBOSE
-CFLAGS-$(crash_debug) += -DCRASH_DEBUG
CFLAGS-$(perfc) += -DPERF_COUNTERS
CFLAGS-$(perfc_arrays) += -DPERF_ARRAYS
CFLAGS-$(lock_profile) += -DLOCK_PROFILE
diff --git a/xen/arch/x86/Makefile b/xen/arch/x86/Makefile
index 4665a68..4ccef4a 100644
--- a/xen/arch/x86/Makefile
+++ b/xen/arch/x86/Makefile
@@ -27,6 +27,7 @@ obj-y += domain_page.o
obj-y += e820.o
obj-y += extable.o
obj-y += flushtlb.o
+obj-$(CONFIG_CRASH_DEBUG) += gdbstub.o
obj-y += i387.o
obj-y += i8259.o
obj-y += io_apic.o
@@ -66,8 +67,6 @@ obj-y += vm_event.o
obj-$(CONFIG_XSPLICE) += alternative.o xsplice.o
obj-y += xstate.o
-obj-$(crash_debug) += gdbstub.o
-
x86_emulate.o: x86_emulate/x86_emulate.c x86_emulate/x86_emulate.h
efi-y := $(shell if [ ! -r $(BASEDIR)/include/xen/compile.h -o \
diff --git a/xen/arch/x86/x86_64/Makefile b/xen/arch/x86/x86_64/Makefile
index 5b54c16..d8815e7 100644
--- a/xen/arch/x86/x86_64/Makefile
+++ b/xen/arch/x86/x86_64/Makefile
@@ -14,4 +14,4 @@ obj-y += cpu_idle.o
obj-y += cpufreq.o
obj-bin-$(CONFIG_KEXEC) += kexec_reloc.o
-obj-$(crash_debug) += gdbstub.o
+obj-$(CONFIG_CRASH_DEBUG) += gdbstub.o
diff --git a/xen/common/Makefile b/xen/common/Makefile
index afd84b6..a98bcc2 100644
--- a/xen/common/Makefile
+++ b/xen/common/Makefile
@@ -8,6 +8,7 @@ obj-y += domain.o
obj-y += event_2l.o
obj-y += event_channel.o
obj-y += event_fifo.o
+obj-$(CONFIG_CRASH_DEBUG) += gdbstub.o
obj-y += grant_table.o
obj-y += guestcopy.o
obj-bin-y += gunzip.init.o
@@ -64,7 +65,6 @@ obj-$(CONFIG_XSPLICE) += xsplice_elf.o
obj-bin-$(CONFIG_X86) += $(foreach n,decompress bunzip2 unxz unlzma unlzo unlz4 earlycpio,$(n).init.o)
obj-$(perfc) += perfc.o
-obj-$(crash_debug) += gdbstub.o
obj-$(CONFIG_COMPAT) += $(addprefix compat/,domain.o kernel.o memory.o multicall.o xlat.o)
diff --git a/xen/include/asm-x86/debugger.h b/xen/include/asm-x86/debugger.h
index 33f4700..fb92ee4 100644
--- a/xen/include/asm-x86/debugger.h
+++ b/xen/include/asm-x86/debugger.h
@@ -39,7 +39,7 @@
#define DEBUGGER_trap_fatal(_v, _r) \
if ( debugger_trap_fatal(_v, _r) ) return;
-#if defined(CRASH_DEBUG)
+#if defined(CONFIG_CRASH_DEBUG)
#include <xen/gdbstub.h>
diff --git a/xen/include/xen/gdbstub.h b/xen/include/xen/gdbstub.h
index ab710da..a5e6714 100644
--- a/xen/include/xen/gdbstub.h
+++ b/xen/include/xen/gdbstub.h
@@ -23,7 +23,7 @@
#include <asm/atomic.h>
#include <asm/page.h>
-#ifdef CRASH_DEBUG
+#ifdef CONFIG_CRASH_DEBUG
struct gdb_context {
int serhnd; /* handle on our serial line */
--
2.7.3
_______________________________________________
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Xen-devel@lists.xen.org
http://lists.xen.org/xen-devel
^ permalink raw reply related [flat|nested] 17+ messages in thread
* [RFC PATCH 3/7] build: convert verbose to Kconfig
2016-05-02 4:10 [RFC PATCH 0/7] Kconfig debug options Doug Goldstein
2016-05-02 4:10 ` [RFC PATCH 1/7] build: add debug menu to Kconfig Doug Goldstein
2016-05-02 4:10 ` [RFC PATCH 2/7] build: convert crash_debug " Doug Goldstein
@ 2016-05-02 4:10 ` Doug Goldstein
2016-05-02 15:18 ` Konrad Rzeszutek Wilk
2016-05-02 4:10 ` [RFC PATCH 4/7] build: convert frame_pointer " Doug Goldstein
` (3 subsequent siblings)
6 siblings, 1 reply; 17+ messages in thread
From: Doug Goldstein @ 2016-05-02 4:10 UTC (permalink / raw)
To: xen-devel
Cc: Stefano Stabellini, Andrew Cooper, Doug Goldstein, Julien Grall,
Jan Beulich, Daniel De Graaf
Convert 'verbose', which was enabled by 'debug=y' to Kconfig as
CONFIG_VERBOSE_DEBUG which is enabled by default when CONFIG_DEBUG is
enabled.
Signed-off-by: Doug Goldstein <cardoe@cardoe.com>
---
CC: Stefano Stabellini <sstabellini@kernel.org>
CC: Julien Grall <julien.grall@arm.com>
CC: Jan Beulich <jbeulich@suse.com>
CC: Andrew Cooper <andrew.cooper3@citrix.com>
CC: Daniel De Graaf <dgdegra@tycho.nsa.gov>
---
INSTALL | 1 -
xen/Kconfig.debug | 6 ++++++
xen/Rules.mk | 5 -----
xen/arch/arm/kernel.c | 2 +-
xen/arch/x86/domain_build.c | 2 +-
xen/include/xsm/dummy.h | 2 +-
6 files changed, 9 insertions(+), 9 deletions(-)
diff --git a/INSTALL b/INSTALL
index 2974b9b..35668bd 100644
--- a/INSTALL
+++ b/INSTALL
@@ -227,7 +227,6 @@ VGABIOS_REL_DATE="dd Mon yyyy"
The following variables can be used to tweak some aspects of the
hypervisor build.
-verbose=y
perfc=y
perfc_arrays=y
lock_profile=y
diff --git a/xen/Kconfig.debug b/xen/Kconfig.debug
index ee68f0d..94a6381 100644
--- a/xen/Kconfig.debug
+++ b/xen/Kconfig.debug
@@ -15,4 +15,10 @@ config CRASH_DEBUG
If you want to be able to attach gdb to Xen to be able to debug
Xen if it crashes then say Y.
+config VERBOSE_DEBUG
+ bool "Verbose debug messages"
+ default y
+ ---help---
+ Enables the verbose flag when loading ELF images.
+
endif # DEBUG
diff --git a/xen/Rules.mk b/xen/Rules.mk
index c044fd1..b159451 100644
--- a/xen/Rules.mk
+++ b/xen/Rules.mk
@@ -3,7 +3,6 @@
# If you change any of these configuration options then you must
# 'make clean' before rebuilding.
#
-verbose ?= n
perfc ?= n
perfc_arrays ?= n
lock_profile ?= n
@@ -17,10 +16,7 @@ include $(XEN_ROOT)/Config.mk
# Hardcoded configuration implications and dependencies.
# Do this is a neater way if it becomes unwieldy.
ifeq ($(debug),y)
-verbose := y
frame_pointer := y
-else
-CFLAGS += -DNDEBUG
endif
ifeq ($(perfc_arrays),y)
perfc := y
@@ -59,7 +55,6 @@ ifneq ($(clang),y)
CFLAGS += -Wa,--strip-local-absolute
endif
-CFLAGS-$(verbose) += -DVERBOSE
CFLAGS-$(perfc) += -DPERF_COUNTERS
CFLAGS-$(perfc_arrays) += -DPERF_ARRAYS
CFLAGS-$(lock_profile) += -DLOCK_PROFILE
diff --git a/xen/arch/arm/kernel.c b/xen/arch/arm/kernel.c
index 9871bd9..3f6cce3 100644
--- a/xen/arch/arm/kernel.c
+++ b/xen/arch/arm/kernel.c
@@ -472,7 +472,7 @@ static int kernel_elf_probe(struct kernel_info *info,
if ( (rc = elf_init(&info->elf.elf, info->elf.kernel_img, size )) != 0 )
goto err;
-#ifdef VERBOSE
+#ifdef CONFIG_VERBOSE_DEBUG
elf_set_verbose(&info->elf.elf);
#endif
elf_parse_binary(&info->elf.elf);
diff --git a/xen/arch/x86/domain_build.c b/xen/arch/x86/domain_build.c
index f9a3eca..b29c377 100644
--- a/xen/arch/x86/domain_build.c
+++ b/xen/arch/x86/domain_build.c
@@ -942,7 +942,7 @@ int __init construct_dom0(
if ( (rc = elf_init(&elf, image_start, image_len)) != 0 )
return rc;
-#ifdef VERBOSE
+#ifdef CONFIG_VERBOSE_DEBUG
elf_set_verbose(&elf);
#endif
elf_parse_binary(&elf);
diff --git a/xen/include/xsm/dummy.h b/xen/include/xsm/dummy.h
index abbe282..406cd18 100644
--- a/xen/include/xsm/dummy.h
+++ b/xen/include/xsm/dummy.h
@@ -215,7 +215,7 @@ static XSM_INLINE int xsm_memory_stat_reservation(XSM_DEFAULT_ARG struct domain
static XSM_INLINE int xsm_console_io(XSM_DEFAULT_ARG struct domain *d, int cmd)
{
XSM_ASSERT_ACTION(XSM_OTHER);
-#ifdef VERBOSE
+#ifdef CONFIG_VERBOSE_DEBUG
if ( cmd == CONSOLEIO_write )
return xsm_default_action(XSM_HOOK, d, NULL);
#endif
--
2.7.3
_______________________________________________
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Xen-devel@lists.xen.org
http://lists.xen.org/xen-devel
^ permalink raw reply related [flat|nested] 17+ messages in thread
* [RFC PATCH 4/7] build: convert frame_pointer to Kconfig
2016-05-02 4:10 [RFC PATCH 0/7] Kconfig debug options Doug Goldstein
` (2 preceding siblings ...)
2016-05-02 4:10 ` [RFC PATCH 3/7] build: convert verbose " Doug Goldstein
@ 2016-05-02 4:10 ` Doug Goldstein
2016-05-02 15:25 ` Konrad Rzeszutek Wilk
2016-05-02 4:10 ` [RFC PATCH 5/7] build: wire up pre-existing debug build flag Doug Goldstein
` (2 subsequent siblings)
6 siblings, 1 reply; 17+ messages in thread
From: Doug Goldstein @ 2016-05-02 4:10 UTC (permalink / raw)
To: xen-devel
Cc: Stefano Stabellini, Wei Liu, George Dunlap, Andrew Cooper,
Doug Goldstein, Tim Deegan, Jan Beulich, Ian Jackson
Converts the frame_pointer option to a Kconfig option.
Signed-off-by: Doug Goldstein <cardoe@cardoe.com>
---
CC: Andrew Cooper <andrew.cooper3@citrix.com>
CC: George Dunlap <George.Dunlap@eu.citrix.com>
CC: Ian Jackson <ian.jackson@eu.citrix.com>
CC: Jan Beulich <jbeulich@suse.com>
CC: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
CC: Stefano Stabellini <sstabellini@kernel.org>
CC: Tim Deegan <tim@xen.org>
CC: Wei Liu <wei.liu2@citrix.com>
---
INSTALL | 1 -
xen/Kconfig.debug | 8 ++++++++
xen/Rules.mk | 6 +-----
3 files changed, 9 insertions(+), 6 deletions(-)
diff --git a/INSTALL b/INSTALL
index 35668bd..f55d42c 100644
--- a/INSTALL
+++ b/INSTALL
@@ -230,7 +230,6 @@ hypervisor build.
perfc=y
perfc_arrays=y
lock_profile=y
-frame_pointer=y
lto=y
During tools build external repos will be cloned into the source tree.
diff --git a/xen/Kconfig.debug b/xen/Kconfig.debug
index 94a6381..0b2ec50 100644
--- a/xen/Kconfig.debug
+++ b/xen/Kconfig.debug
@@ -15,6 +15,14 @@ config CRASH_DEBUG
If you want to be able to attach gdb to Xen to be able to debug
Xen if it crashes then say Y.
+config FRAME_POINTER
+ bool "Compile Xen with frame pointers"
+ default y
+ ---help---
+ If you say Y here the resulting Xen will be slightly larger and
+ maybe slower, but it gives very useful debugging information
+ in case of any Xen bugs.
+
config VERBOSE_DEBUG
bool "Verbose debug messages"
default y
diff --git a/xen/Rules.mk b/xen/Rules.mk
index b159451..84b9d81 100644
--- a/xen/Rules.mk
+++ b/xen/Rules.mk
@@ -6,7 +6,6 @@
perfc ?= n
perfc_arrays ?= n
lock_profile ?= n
-frame_pointer ?= n
lto ?= n
-include $(BASEDIR)/include/config/auto.conf
@@ -15,9 +14,6 @@ include $(XEN_ROOT)/Config.mk
# Hardcoded configuration implications and dependencies.
# Do this is a neater way if it becomes unwieldy.
-ifeq ($(debug),y)
-frame_pointer := y
-endif
ifeq ($(perfc_arrays),y)
perfc := y
endif
@@ -58,7 +54,7 @@ endif
CFLAGS-$(perfc) += -DPERF_COUNTERS
CFLAGS-$(perfc_arrays) += -DPERF_ARRAYS
CFLAGS-$(lock_profile) += -DLOCK_PROFILE
-CFLAGS-$(frame_pointer) += -fno-omit-frame-pointer -DCONFIG_FRAME_POINTER
+CFLAGS-$(CONFIG_FRAME_POINTER) += -fno-omit-frame-pointer
ifneq ($(max_phys_irqs),)
CFLAGS-y += -DMAX_PHYS_IRQS=$(max_phys_irqs)
--
2.7.3
_______________________________________________
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Xen-devel@lists.xen.org
http://lists.xen.org/xen-devel
^ permalink raw reply related [flat|nested] 17+ messages in thread
* [RFC PATCH 5/7] build: wire up pre-existing debug build flag
2016-05-02 4:10 [RFC PATCH 0/7] Kconfig debug options Doug Goldstein
` (3 preceding siblings ...)
2016-05-02 4:10 ` [RFC PATCH 4/7] build: convert frame_pointer " Doug Goldstein
@ 2016-05-02 4:10 ` Doug Goldstein
2016-05-02 16:04 ` Konrad Rzeszutek Wilk
2016-05-02 4:10 ` [RFC PATCH 6/7] build: convert perfc{, _arrays} to Kconfig Doug Goldstein
2016-05-02 4:10 ` [RFC PATCH 7/7] build: convert lock_profile " Doug Goldstein
6 siblings, 1 reply; 17+ messages in thread
From: Doug Goldstein @ 2016-05-02 4:10 UTC (permalink / raw)
To: xen-devel
Cc: Stefano Stabellini, Wei Liu, George Dunlap, Andrew Cooper,
Doug Goldstein, Tim Deegan, Jan Beulich, Ian Jackson
This allows 'make debug=n' and 'make debug=y' work as it did previously
but only in the case of the user not having an existing .config file
from a 'make menuconfig'. This is because the command line 'debug' flag
can only be used to set the default value and if the user has already
built up a config their have their real preference set.
Signed-off-by: Doug Goldstein <cardoe@cardoe.com>
---
CC: Andrew Cooper <andrew.cooper3@citrix.com>
CC: George Dunlap <George.Dunlap@eu.citrix.com>
CC: Ian Jackson <ian.jackson@eu.citrix.com>
CC: Jan Beulich <jbeulich@suse.com>
CC: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
CC: Stefano Stabellini <sstabellini@kernel.org>
CC: Tim Deegan <tim@xen.org>
CC: Wei Liu <wei.liu2@citrix.com>
---
xen/Kconfig.debug | 5 +++++
xen/Makefile | 1 +
2 files changed, 6 insertions(+)
diff --git a/xen/Kconfig.debug b/xen/Kconfig.debug
index 0b2ec50..ec27b09 100644
--- a/xen/Kconfig.debug
+++ b/xen/Kconfig.debug
@@ -1,6 +1,11 @@
+config DEBUG_ENV
+ bool
+ option env="debug"
menuconfig DEBUG
bool "Debugging Options"
+ default y if DEBUG_ENV = "y"
+ default n
---help---
If you want to debug Xen say Y and select any additional debugging
support options. This enables additional debugging through Xen
diff --git a/xen/Makefile b/xen/Makefile
index f49014b..e2da895 100644
--- a/xen/Makefile
+++ b/xen/Makefile
@@ -27,6 +27,7 @@ SRCARCH=$(shell echo $(ARCH) | sed -e 's/x86.*/x86/' -e s'/arm\(32\|64\)/arm/g')
# Don't break if the build process wasn't called from the top level
# we need XEN_TARGET_ARCH to generate the proper config
include $(XEN_ROOT)/Config.mk
+export debug
# Allow someone to change their config file
export KCONFIG_CONFIG ?= .config
--
2.7.3
_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xen.org
http://lists.xen.org/xen-devel
^ permalink raw reply related [flat|nested] 17+ messages in thread
* [RFC PATCH 6/7] build: convert perfc{, _arrays} to Kconfig
2016-05-02 4:10 [RFC PATCH 0/7] Kconfig debug options Doug Goldstein
` (4 preceding siblings ...)
2016-05-02 4:10 ` [RFC PATCH 5/7] build: wire up pre-existing debug build flag Doug Goldstein
@ 2016-05-02 4:10 ` Doug Goldstein
2016-05-02 4:10 ` [RFC PATCH 7/7] build: convert lock_profile " Doug Goldstein
6 siblings, 0 replies; 17+ messages in thread
From: Doug Goldstein @ 2016-05-02 4:10 UTC (permalink / raw)
To: xen-devel; +Cc: Andrew Cooper, Doug Goldstein, Jan Beulich
Convert the 'perfc' and 'perfc_arrays' options to Kconfig as
CONFIG_PERF_COUNTERS and CONFIG_PERF_ARRAYS to minimize code changes.
Signed-off-by: Doug Goldstein <cardoe@cardoe.com>
---
CC: Jan Beulich <jbeulich@suse.com>
CC: Andrew Cooper <andrew.cooper3@citrix.com>
---
INSTALL | 2 --
xen/Kconfig.debug | 13 +++++++++++++
xen/Rules.mk | 10 ----------
xen/arch/x86/hvm/hvm.c | 2 +-
xen/arch/x86/time.c | 4 ++--
xen/arch/x86/x86_64/asm-offsets.c | 2 +-
xen/common/Makefile | 2 +-
xen/common/keyhandler.c | 2 +-
xen/common/perfc.c | 2 +-
xen/common/sysctl.c | 2 +-
xen/include/asm-x86/asm_defns.h | 2 +-
xen/include/asm-x86/domain.h | 2 +-
xen/include/xen/perfc.h | 8 ++++----
xen/include/xen/sched.h | 2 +-
14 files changed, 28 insertions(+), 27 deletions(-)
diff --git a/INSTALL b/INSTALL
index f55d42c..623887d 100644
--- a/INSTALL
+++ b/INSTALL
@@ -227,8 +227,6 @@ VGABIOS_REL_DATE="dd Mon yyyy"
The following variables can be used to tweak some aspects of the
hypervisor build.
-perfc=y
-perfc_arrays=y
lock_profile=y
lto=y
diff --git a/xen/Kconfig.debug b/xen/Kconfig.debug
index ec27b09..4727273 100644
--- a/xen/Kconfig.debug
+++ b/xen/Kconfig.debug
@@ -28,6 +28,19 @@ config FRAME_POINTER
maybe slower, but it gives very useful debugging information
in case of any Xen bugs.
+config PERF_ARRAYS
+ bool "Performance Counter Arrays"
+ default n
+ depends on PERF_COUNTERS
+ ---help---
+ Performance Counter Arrays
+
+config PERF_COUNTERS
+ bool "Performance Counters"
+ default n
+ ---help---
+ Performance Counters
+
config VERBOSE_DEBUG
bool "Verbose debug messages"
default y
diff --git a/xen/Rules.mk b/xen/Rules.mk
index 84b9d81..7e2cb5f 100644
--- a/xen/Rules.mk
+++ b/xen/Rules.mk
@@ -3,8 +3,6 @@
# If you change any of these configuration options then you must
# 'make clean' before rebuilding.
#
-perfc ?= n
-perfc_arrays ?= n
lock_profile ?= n
lto ?= n
@@ -12,12 +10,6 @@ lto ?= n
include $(XEN_ROOT)/Config.mk
-# Hardcoded configuration implications and dependencies.
-# Do this is a neater way if it becomes unwieldy.
-ifeq ($(perfc_arrays),y)
-perfc := y
-endif
-
ifneq ($(origin kexec),undefined)
$(error "You must use 'make menuconfig' to enable/disable kexec now.")
endif
@@ -51,8 +43,6 @@ ifneq ($(clang),y)
CFLAGS += -Wa,--strip-local-absolute
endif
-CFLAGS-$(perfc) += -DPERF_COUNTERS
-CFLAGS-$(perfc_arrays) += -DPERF_ARRAYS
CFLAGS-$(lock_profile) += -DLOCK_PROFILE
CFLAGS-$(CONFIG_FRAME_POINTER) += -fno-omit-frame-pointer
diff --git a/xen/arch/x86/hvm/hvm.c b/xen/arch/x86/hvm/hvm.c
index 82e2ed1..8519dc9 100644
--- a/xen/arch/x86/hvm/hvm.c
+++ b/xen/arch/x86/hvm/hvm.c
@@ -3526,7 +3526,7 @@ void hvm_cpuid(unsigned int input, unsigned int *eax, unsigned int *ebx,
static uint64_t _hvm_rdtsc_intercept(void)
{
struct vcpu *curr = current;
-#if !defined(NDEBUG) || defined(PERF_COUNTERS)
+#if !defined(NDEBUG) || defined(CONFIG_PERF_COUNTERS)
struct domain *currd = curr->domain;
if ( currd->arch.vtsc )
diff --git a/xen/arch/x86/time.c b/xen/arch/x86/time.c
index 6438b47..3928a5f 100644
--- a/xen/arch/x86/time.c
+++ b/xen/arch/x86/time.c
@@ -1688,7 +1688,7 @@ void pv_soft_rdtsc(struct vcpu *v, struct cpu_user_regs *regs, int rdtscp)
spin_lock(&d->arch.vtsc_lock);
-#if !defined(NDEBUG) || defined(PERF_COUNTERS)
+#if !defined(NDEBUG) || defined(CONFIG_PERF_COUNTERS)
if ( guest_kernel_mode(v, regs) )
d->arch.vtsc_kerncount++;
else
@@ -1959,7 +1959,7 @@ static void dump_softtsc(unsigned char key)
printk(",khz=%"PRIu32, d->arch.tsc_khz);
if ( d->arch.incarnation )
printk(",inc=%"PRIu32, d->arch.incarnation);
-#if !defined(NDEBUG) || defined(PERF_COUNTERS)
+#if !defined(NDEBUG) || defined(CONFIG_PERF_COUNTERS)
if ( !(d->arch.vtsc_kerncount | d->arch.vtsc_usercount) )
printk("\n");
else
diff --git a/xen/arch/x86/x86_64/asm-offsets.c b/xen/arch/x86/x86_64/asm-offsets.c
index fa37ee0..891ddc8 100644
--- a/xen/arch/x86/x86_64/asm-offsets.c
+++ b/xen/arch/x86/x86_64/asm-offsets.c
@@ -151,7 +151,7 @@ void __dummy__(void)
OFFSET(TRAPBOUNCE_eip, struct trap_bounce, eip);
BLANK();
-#if PERF_COUNTERS
+#if CONFIG_PERF_COUNTERS
DEFINE(ASM_PERFC_hypercalls, PERFC_hypercalls);
DEFINE(ASM_PERFC_exceptions, PERFC_exceptions);
BLANK();
diff --git a/xen/common/Makefile b/xen/common/Makefile
index a98bcc2..5891b1c 100644
--- a/xen/common/Makefile
+++ b/xen/common/Makefile
@@ -64,7 +64,7 @@ obj-$(CONFIG_XSPLICE) += xsplice_elf.o
obj-bin-$(CONFIG_X86) += $(foreach n,decompress bunzip2 unxz unlzma unlzo unlz4 earlycpio,$(n).init.o)
-obj-$(perfc) += perfc.o
+obj-$(CONFIG_PERF_COUNTERS) += perfc.o
obj-$(CONFIG_COMPAT) += $(addprefix compat/,domain.o kernel.o memory.o multicall.o xlat.o)
diff --git a/xen/common/keyhandler.c b/xen/common/keyhandler.c
index 4ff90f6..65b70ce 100644
--- a/xen/common/keyhandler.c
+++ b/xen/common/keyhandler.c
@@ -59,7 +59,7 @@ static struct keyhandler {
IRQ_KEYHANDLER('%', do_debug_key, "trap to xendbg", 0),
IRQ_KEYHANDLER('*', run_all_keyhandlers, "print all diagnostics", 0),
-#ifdef PERF_COUNTERS
+#ifdef CONFIG_PERF_COUNTERS
KEYHANDLER('p', perfc_printall, "print performance counters", 1),
KEYHANDLER('P', perfc_reset, "reset performance counters", 0),
#endif
diff --git a/xen/common/perfc.c b/xen/common/perfc.c
index 9f078e1..3da4c96 100644
--- a/xen/common/perfc.c
+++ b/xen/common/perfc.c
@@ -78,7 +78,7 @@ void perfc_printall(unsigned char key)
printk("TOTAL[%12Lu]", sum);
if (sum)
{
-#ifdef PERF_ARRAYS
+#ifdef CONFIG_PERF_ARRAYS
for ( k = 0; k < perfc_info[i].nr_elements; k++ )
{
sum = 0;
diff --git a/xen/common/sysctl.c b/xen/common/sysctl.c
index 9a4cc1f..11bef0e 100644
--- a/xen/common/sysctl.c
+++ b/xen/common/sysctl.c
@@ -115,7 +115,7 @@ long do_sysctl(XEN_GUEST_HANDLE_PARAM(xen_sysctl_t) u_sysctl)
}
break;
-#ifdef PERF_COUNTERS
+#ifdef CONFIG_PERF_COUNTERS
case XEN_SYSCTL_perfc_op:
ret = perfc_control(&op->u.perfc_op);
break;
diff --git a/xen/include/asm-x86/asm_defns.h b/xen/include/asm-x86/asm_defns.h
index b5f79d8..24f5404 100644
--- a/xen/include/asm-x86/asm_defns.h
+++ b/xen/include/asm-x86/asm_defns.h
@@ -363,7 +363,7 @@ static always_inline void stac(void)
#endif
-#ifdef PERF_COUNTERS
+#ifdef CONFIG_PERF_COUNTERS
#define PERFC_INCR(_name,_idx,_cur) \
pushq _cur; \
movslq VCPU_processor(_cur),_cur; \
diff --git a/xen/include/asm-x86/domain.h b/xen/include/asm-x86/domain.h
index 165e533..783fa4f 100644
--- a/xen/include/asm-x86/domain.h
+++ b/xen/include/asm-x86/domain.h
@@ -377,7 +377,7 @@ struct arch_domain
hardware TSC scaling cases */
uint32_t incarnation; /* incremented every restore or live migrate
(possibly other cases in the future */
-#if !defined(NDEBUG) || defined(PERF_COUNTERS)
+#if !defined(NDEBUG) || defined(CONFIG_PERF_COUNTERS)
uint64_t vtsc_kerncount;
uint64_t vtsc_usercount;
#endif
diff --git a/xen/include/xen/perfc.h b/xen/include/xen/perfc.h
index 6cb0cd1..6846e71 100644
--- a/xen/include/xen/perfc.h
+++ b/xen/include/xen/perfc.h
@@ -1,7 +1,7 @@
#ifndef __XEN_PERFC_H__
#define __XEN_PERFC_H__
-#ifdef PERF_COUNTERS
+#ifdef CONFIG_PERF_COUNTERS
#include <xen/lib.h>
#include <xen/smp.h>
@@ -76,7 +76,7 @@ DECLARE_PER_CPU(perfc_t[NUM_PERFCOUNTERS], perfcounters);
* Histogram: special treatment for 0 and 1 count. After that equally spaced
* with last bucket taking the rest.
*/
-#ifdef PERF_ARRAYS
+#ifdef CONFIG_PERF_ARRAYS
#define perfc_incr_histo(x,v) \
do { \
if ( (v) == 0 ) \
@@ -100,7 +100,7 @@ extern void perfc_printall(unsigned char key);
extern void perfc_reset(unsigned char key);
-#else /* PERF_COUNTERS */
+#else /* CONFIG_PERF_COUNTERS */
#define perfc_value(x) (0)
#define perfc_valuea(x,y) (0)
@@ -114,6 +114,6 @@ extern void perfc_reset(unsigned char key);
#define perfc_adda(x,y,z) ((void)0)
#define perfc_incr_histo(x,y,z) ((void)0)
-#endif /* PERF_COUNTERS */
+#endif /* CONFIG_PERF_COUNTERS */
#endif /* __XEN_PERFC_H__ */
diff --git a/xen/include/xen/sched.h b/xen/include/xen/sched.h
index 09fff5f..651cd96 100644
--- a/xen/include/xen/sched.h
+++ b/xen/include/xen/sched.h
@@ -38,7 +38,7 @@ DEFINE_XEN_GUEST_HANDLE(vcpu_runstate_info_compat_t);
* Enable and ease the use of scheduling related performance counters.
*
*/
-#ifdef PERF_COUNTERS
+#ifdef CONFIG_PERF_COUNTERS
#define SCHED_STATS
#endif
--
2.7.3
_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xen.org
http://lists.xen.org/xen-devel
^ permalink raw reply related [flat|nested] 17+ messages in thread
* [RFC PATCH 7/7] build: convert lock_profile to Kconfig
2016-05-02 4:10 [RFC PATCH 0/7] Kconfig debug options Doug Goldstein
` (5 preceding siblings ...)
2016-05-02 4:10 ` [RFC PATCH 6/7] build: convert perfc{, _arrays} to Kconfig Doug Goldstein
@ 2016-05-02 4:10 ` Doug Goldstein
2016-05-02 16:08 ` Konrad Rzeszutek Wilk
6 siblings, 1 reply; 17+ messages in thread
From: Doug Goldstein @ 2016-05-02 4:10 UTC (permalink / raw)
To: xen-devel
Cc: Andrew Cooper, Julien Grall, Stefano Stabellini, Doug Goldstein,
Jan Beulich
Convert the 'lock_profile' option to Kconfig as CONFIG_LOCK_PROFILE.
Signed-off-by: Doug Goldstein <cardoe@cardoe.com>
---
CC: Stefano Stabellini <sstabellini@kernel.org>
CC: Julien Grall <julien.grall@arm.com>
CC: Jan Beulich <jbeulich@suse.com>
CC: Andrew Cooper <andrew.cooper3@citrix.com>
---
INSTALL | 1 -
xen/Kconfig.debug | 6 ++++++
xen/Rules.mk | 2 --
xen/arch/arm/xen.lds.S | 2 +-
xen/arch/x86/domain.c | 2 +-
xen/arch/x86/xen.lds.S | 2 +-
xen/common/keyhandler.c | 2 +-
xen/common/spinlock.c | 10 +++++-----
xen/common/sysctl.c | 2 +-
xen/include/xen/spinlock.h | 4 ++--
10 files changed, 18 insertions(+), 15 deletions(-)
diff --git a/INSTALL b/INSTALL
index 623887d..616a67a 100644
--- a/INSTALL
+++ b/INSTALL
@@ -227,7 +227,6 @@ VGABIOS_REL_DATE="dd Mon yyyy"
The following variables can be used to tweak some aspects of the
hypervisor build.
-lock_profile=y
lto=y
During tools build external repos will be cloned into the source tree.
diff --git a/xen/Kconfig.debug b/xen/Kconfig.debug
index 4727273..5b370e8 100644
--- a/xen/Kconfig.debug
+++ b/xen/Kconfig.debug
@@ -28,6 +28,12 @@ config FRAME_POINTER
maybe slower, but it gives very useful debugging information
in case of any Xen bugs.
+config LOCK_PROFILE
+ bool "Lock Profiiling"
+ default n
+ ---help---
+ Lock Profiling
+
config PERF_ARRAYS
bool "Performance Counter Arrays"
default n
diff --git a/xen/Rules.mk b/xen/Rules.mk
index 7e2cb5f..3015c5b 100644
--- a/xen/Rules.mk
+++ b/xen/Rules.mk
@@ -3,7 +3,6 @@
# If you change any of these configuration options then you must
# 'make clean' before rebuilding.
#
-lock_profile ?= n
lto ?= n
-include $(BASEDIR)/include/config/auto.conf
@@ -43,7 +42,6 @@ ifneq ($(clang),y)
CFLAGS += -Wa,--strip-local-absolute
endif
-CFLAGS-$(lock_profile) += -DLOCK_PROFILE
CFLAGS-$(CONFIG_FRAME_POINTER) += -fno-omit-frame-pointer
ifneq ($(max_phys_irqs),)
diff --git a/xen/arch/arm/xen.lds.S b/xen/arch/arm/xen.lds.S
index 1f010bd..76982b2 100644
--- a/xen/arch/arm/xen.lds.S
+++ b/xen/arch/arm/xen.lds.S
@@ -54,7 +54,7 @@ SECTIONS
*(.rodata)
*(.rodata.*)
-#ifdef LOCK_PROFILE
+#ifdef CONFIG_LOCK_PROFILE
. = ALIGN(POINTER_ALIGN);
__lock_profile_start = .;
*(.lockprofile.data)
diff --git a/xen/arch/x86/domain.c b/xen/arch/x86/domain.c
index 5af2cc5..978ec3a 100644
--- a/xen/arch/x86/domain.c
+++ b/xen/arch/x86/domain.c
@@ -251,7 +251,7 @@ struct domain *alloc_domain_struct(void)
#endif
-#ifndef LOCK_PROFILE
+#ifndef CONFIG_LOCK_PROFILE
BUILD_BUG_ON(sizeof(*d) > PAGE_SIZE);
#endif
d = alloc_xenheap_pages(order, MEMF_bits(bits));
diff --git a/xen/arch/x86/xen.lds.S b/xen/arch/x86/xen.lds.S
index b14bcd2..a43b29d 100644
--- a/xen/arch/x86/xen.lds.S
+++ b/xen/arch/x86/xen.lds.S
@@ -103,7 +103,7 @@ SECTIONS
*(.ex_table.pre)
__stop___pre_ex_table = .;
-#ifdef LOCK_PROFILE
+#ifdef CONFIG_LOCK_PROFILE
. = ALIGN(POINTER_ALIGN);
__lock_profile_start = .;
*(.lockprofile.data)
diff --git a/xen/common/keyhandler.c b/xen/common/keyhandler.c
index 65b70ce..16de6e8 100644
--- a/xen/common/keyhandler.c
+++ b/xen/common/keyhandler.c
@@ -64,7 +64,7 @@ static struct keyhandler {
KEYHANDLER('P', perfc_reset, "reset performance counters", 0),
#endif
-#ifdef LOCK_PROFILE
+#ifdef CONFIG_LOCK_PROFILE
KEYHANDLER('l', spinlock_profile_printall, "print lock profile info", 1),
KEYHANDLER('L', spinlock_profile_reset, "reset lock profile info", 0),
#endif
diff --git a/xen/common/spinlock.c b/xen/common/spinlock.c
index b377bb9..017bdf3 100644
--- a/xen/common/spinlock.c
+++ b/xen/common/spinlock.c
@@ -85,7 +85,7 @@ void spin_debug_disable(void)
#endif
-#ifdef LOCK_PROFILE
+#ifdef CONFIG_LOCK_PROFILE
#define LOCK_PROFILE_REL \
if (lock->profile) \
@@ -212,7 +212,7 @@ int _spin_trylock(spinlock_t *lock)
if ( cmpxchg(&lock->tickets.head_tail,
old.head_tail, new.head_tail) != old.head_tail )
return 0;
-#ifdef LOCK_PROFILE
+#ifdef CONFIG_LOCK_PROFILE
if (lock->profile)
lock->profile->time_locked = NOW();
#endif
@@ -227,7 +227,7 @@ int _spin_trylock(spinlock_t *lock)
void _spin_barrier(spinlock_t *lock)
{
spinlock_tickets_t sample;
-#ifdef LOCK_PROFILE
+#ifdef CONFIG_LOCK_PROFILE
s_time_t block = NOW();
#endif
@@ -238,7 +238,7 @@ void _spin_barrier(spinlock_t *lock)
{
while ( observe_head(&lock->tickets) == sample.head )
arch_lock_relax();
-#ifdef LOCK_PROFILE
+#ifdef CONFIG_LOCK_PROFILE
if ( lock->profile )
{
lock->profile->time_block += NOW() - block;
@@ -296,7 +296,7 @@ void _spin_unlock_recursive(spinlock_t *lock)
}
}
-#ifdef LOCK_PROFILE
+#ifdef CONFIG_LOCK_PROFILE
struct lock_profile_anc {
struct lock_profile_qhead *head_q; /* first head of this type */
diff --git a/xen/common/sysctl.c b/xen/common/sysctl.c
index 11bef0e..b4f235e 100644
--- a/xen/common/sysctl.c
+++ b/xen/common/sysctl.c
@@ -121,7 +121,7 @@ long do_sysctl(XEN_GUEST_HANDLE_PARAM(xen_sysctl_t) u_sysctl)
break;
#endif
-#ifdef LOCK_PROFILE
+#ifdef CONFIG_LOCK_PROFILE
case XEN_SYSCTL_lockprof_op:
ret = spinlock_profile_control(&op->u.lockprof_op);
break;
diff --git a/xen/include/xen/spinlock.h b/xen/include/xen/spinlock.h
index 88b53f9..c1883bd 100644
--- a/xen/include/xen/spinlock.h
+++ b/xen/include/xen/spinlock.h
@@ -20,7 +20,7 @@ struct lock_debug { };
#define spin_debug_disable() ((void)0)
#endif
-#ifdef LOCK_PROFILE
+#ifdef CONFIG_LOCK_PROFILE
#include <public/sysctl.h>
@@ -144,7 +144,7 @@ typedef struct spinlock {
u16 recurse_cnt:4;
#define SPINLOCK_MAX_RECURSE 0xfu
struct lock_debug debug;
-#ifdef LOCK_PROFILE
+#ifdef CONFIG_LOCK_PROFILE
struct lock_profile *profile;
#endif
} spinlock_t;
--
2.7.3
_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xen.org
http://lists.xen.org/xen-devel
^ permalink raw reply related [flat|nested] 17+ messages in thread
* Re: [RFC PATCH 1/7] build: add debug menu to Kconfig
2016-05-02 4:10 ` [RFC PATCH 1/7] build: add debug menu to Kconfig Doug Goldstein
@ 2016-05-02 10:42 ` Wei Liu
2016-05-02 11:02 ` Andrew Cooper
0 siblings, 1 reply; 17+ messages in thread
From: Wei Liu @ 2016-05-02 10:42 UTC (permalink / raw)
To: Doug Goldstein
Cc: Tim Deegan, Stefano Stabellini, Wei Liu, George Dunlap,
Andrew Cooper, Ian Jackson, xen-devel, Jan Beulich
On Sun, May 01, 2016 at 11:10:40PM -0500, Doug Goldstein wrote:
> There are a number of debugging options for Xen so the idea is to have a
> menu to group them all together. Enabling this menu item will also
> disable NDEBUG which will result in more debug prints. This was
> previously wired into the 'debug=y' command line option.
>
> Signed-off-by: Doug Goldstein <cardoe@cardoe.com>
> ---
> CC: Andrew Cooper <andrew.cooper3@citrix.com>
> CC: George Dunlap <George.Dunlap@eu.citrix.com>
> CC: Ian Jackson <ian.jackson@eu.citrix.com>
> CC: Jan Beulich <jbeulich@suse.com>
> CC: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
> CC: Stefano Stabellini <sstabellini@kernel.org>
> CC: Tim Deegan <tim@xen.org>
> CC: Wei Liu <wei.liu2@citrix.com>
> ---
> xen/Kconfig | 2 ++
> xen/Kconfig.debug | 7 +++++++
> xen/include/xen/config.h | 4 ++++
> 3 files changed, 13 insertions(+)
> create mode 100644 xen/Kconfig.debug
>
> diff --git a/xen/Kconfig b/xen/Kconfig
> index fa8b27c..0fe7a1a 100644
> --- a/xen/Kconfig
> +++ b/xen/Kconfig
> @@ -26,3 +26,5 @@ config DEFCONFIG_LIST
> config EXPERT
> string
> option env="XEN_CONFIG_EXPERT"
> +
> +source "Kconfig.debug"
> diff --git a/xen/Kconfig.debug b/xen/Kconfig.debug
> new file mode 100644
> index 0000000..d14d758
> --- /dev/null
> +++ b/xen/Kconfig.debug
> @@ -0,0 +1,7 @@
> +
> +menuconfig DEBUG
> + bool "Debugging Options"
> + ---help---
> + If you want to debug Xen say Y and select any additional debugging
> + support options. This enables additional debugging through Xen
> + and as a result enabling this option results in no security guarantees.
Maybe that's because I'm not a native speaker, this doesn't sound right
to me -- it implies debugging option makes xen insecure.
I think you mean "results in no security support"?
Wei.
> diff --git a/xen/include/xen/config.h b/xen/include/xen/config.h
> index ef6e5ee..473c5e8 100644
> --- a/xen/include/xen/config.h
> +++ b/xen/include/xen/config.h
> @@ -81,4 +81,8 @@
> /* allow existing code to work with Kconfig variable */
> #define NR_CPUS CONFIG_NR_CPUS
>
> +#ifndef CONFIG_DEBUG
> +#define NDEBUG
> +#endif
> +
> #endif /* __XEN_CONFIG_H__ */
> --
> 2.7.3
>
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^ permalink raw reply [flat|nested] 17+ messages in thread
* Re: [RFC PATCH 1/7] build: add debug menu to Kconfig
2016-05-02 10:42 ` Wei Liu
@ 2016-05-02 11:02 ` Andrew Cooper
2016-05-02 14:35 ` Doug Goldstein
0 siblings, 1 reply; 17+ messages in thread
From: Andrew Cooper @ 2016-05-02 11:02 UTC (permalink / raw)
To: Wei Liu, Doug Goldstein
Cc: Stefano Stabellini, George Dunlap, Tim Deegan, Ian Jackson,
xen-devel, Jan Beulich
On 02/05/2016 11:42, Wei Liu wrote:
> On Sun, May 01, 2016 at 11:10:40PM -0500, Doug Goldstein wrote:
>> There are a number of debugging options for Xen so the idea is to have a
>> menu to group them all together. Enabling this menu item will also
>> disable NDEBUG which will result in more debug prints. This was
>> previously wired into the 'debug=y' command line option.
>>
>> Signed-off-by: Doug Goldstein <cardoe@cardoe.com>
>> ---
>> CC: Andrew Cooper <andrew.cooper3@citrix.com>
>> CC: George Dunlap <George.Dunlap@eu.citrix.com>
>> CC: Ian Jackson <ian.jackson@eu.citrix.com>
>> CC: Jan Beulich <jbeulich@suse.com>
>> CC: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
>> CC: Stefano Stabellini <sstabellini@kernel.org>
>> CC: Tim Deegan <tim@xen.org>
>> CC: Wei Liu <wei.liu2@citrix.com>
>> ---
>> xen/Kconfig | 2 ++
>> xen/Kconfig.debug | 7 +++++++
>> xen/include/xen/config.h | 4 ++++
>> 3 files changed, 13 insertions(+)
>> create mode 100644 xen/Kconfig.debug
>>
>> diff --git a/xen/Kconfig b/xen/Kconfig
>> index fa8b27c..0fe7a1a 100644
>> --- a/xen/Kconfig
>> +++ b/xen/Kconfig
>> @@ -26,3 +26,5 @@ config DEFCONFIG_LIST
>> config EXPERT
>> string
>> option env="XEN_CONFIG_EXPERT"
>> +
>> +source "Kconfig.debug"
>> diff --git a/xen/Kconfig.debug b/xen/Kconfig.debug
>> new file mode 100644
>> index 0000000..d14d758
>> --- /dev/null
>> +++ b/xen/Kconfig.debug
>> @@ -0,0 +1,7 @@
>> +
>> +menuconfig DEBUG
>> + bool "Debugging Options"
>> + ---help---
>> + If you want to debug Xen say Y and select any additional debugging
>> + support options. This enables additional debugging through Xen
>> + and as a result enabling this option results in no security guarantees.
> Maybe that's because I'm not a native speaker, this doesn't sound right
> to me -- it implies debugging option makes xen insecure.
>
> I think you mean "results in no security support"?
Instead of mentioning security, I would simply say "Enabling this option
is intended for development purposes only, and not for production use".
There is already a statement saying that issues which only affect a
debug hypervisor are not considered security relevant.
~Andrew
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^ permalink raw reply [flat|nested] 17+ messages in thread
* Re: [RFC PATCH 1/7] build: add debug menu to Kconfig
2016-05-02 11:02 ` Andrew Cooper
@ 2016-05-02 14:35 ` Doug Goldstein
0 siblings, 0 replies; 17+ messages in thread
From: Doug Goldstein @ 2016-05-02 14:35 UTC (permalink / raw)
To: Andrew Cooper, Wei Liu
Cc: Stefano Stabellini, George Dunlap, Tim Deegan, Ian Jackson,
xen-devel, Jan Beulich
[-- Attachment #1.1.1: Type: text/plain, Size: 2460 bytes --]
On 5/2/16 6:02 AM, Andrew Cooper wrote:
> On 02/05/2016 11:42, Wei Liu wrote:
>> On Sun, May 01, 2016 at 11:10:40PM -0500, Doug Goldstein wrote:
>>> There are a number of debugging options for Xen so the idea is to have a
>>> menu to group them all together. Enabling this menu item will also
>>> disable NDEBUG which will result in more debug prints. This was
>>> previously wired into the 'debug=y' command line option.
>>>
>>> Signed-off-by: Doug Goldstein <cardoe@cardoe.com>
>>> ---
>>> CC: Andrew Cooper <andrew.cooper3@citrix.com>
>>> CC: George Dunlap <George.Dunlap@eu.citrix.com>
>>> CC: Ian Jackson <ian.jackson@eu.citrix.com>
>>> CC: Jan Beulich <jbeulich@suse.com>
>>> CC: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
>>> CC: Stefano Stabellini <sstabellini@kernel.org>
>>> CC: Tim Deegan <tim@xen.org>
>>> CC: Wei Liu <wei.liu2@citrix.com>
>>> ---
>>> xen/Kconfig | 2 ++
>>> xen/Kconfig.debug | 7 +++++++
>>> xen/include/xen/config.h | 4 ++++
>>> 3 files changed, 13 insertions(+)
>>> create mode 100644 xen/Kconfig.debug
>>>
>>> diff --git a/xen/Kconfig b/xen/Kconfig
>>> index fa8b27c..0fe7a1a 100644
>>> --- a/xen/Kconfig
>>> +++ b/xen/Kconfig
>>> @@ -26,3 +26,5 @@ config DEFCONFIG_LIST
>>> config EXPERT
>>> string
>>> option env="XEN_CONFIG_EXPERT"
>>> +
>>> +source "Kconfig.debug"
>>> diff --git a/xen/Kconfig.debug b/xen/Kconfig.debug
>>> new file mode 100644
>>> index 0000000..d14d758
>>> --- /dev/null
>>> +++ b/xen/Kconfig.debug
>>> @@ -0,0 +1,7 @@
>>> +
>>> +menuconfig DEBUG
>>> + bool "Debugging Options"
>>> + ---help---
>>> + If you want to debug Xen say Y and select any additional debugging
>>> + support options. This enables additional debugging through Xen
>>> + and as a result enabling this option results in no security guarantees.
>> Maybe that's because I'm not a native speaker, this doesn't sound right
>> to me -- it implies debugging option makes xen insecure.
>>
>> I think you mean "results in no security support"?
>
> Instead of mentioning security, I would simply say "Enabling this option
> is intended for development purposes only, and not for production use".
>
> There is already a statement saying that issues which only affect a
> debug hypervisor are not considered security relevant.
>
> ~Andrew
>
Yeah that's better wording than what I've got. I'll update it. Thanks!
--
Doug Goldstein
[-- Attachment #1.2: OpenPGP digital signature --]
[-- Type: application/pgp-signature, Size: 959 bytes --]
[-- Attachment #2: Type: text/plain, Size: 126 bytes --]
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^ permalink raw reply [flat|nested] 17+ messages in thread
* Re: [RFC PATCH 3/7] build: convert verbose to Kconfig
2016-05-02 4:10 ` [RFC PATCH 3/7] build: convert verbose " Doug Goldstein
@ 2016-05-02 15:18 ` Konrad Rzeszutek Wilk
2016-05-03 13:47 ` Doug Goldstein
0 siblings, 1 reply; 17+ messages in thread
From: Konrad Rzeszutek Wilk @ 2016-05-02 15:18 UTC (permalink / raw)
To: Doug Goldstein
Cc: Stefano Stabellini, Andrew Cooper, xen-devel, Julien Grall,
Jan Beulich, Daniel De Graaf
On Sun, May 01, 2016 at 11:10:42PM -0500, Doug Goldstein wrote:
> Convert 'verbose', which was enabled by 'debug=y' to Kconfig as
> CONFIG_VERBOSE_DEBUG which is enabled by default when CONFIG_DEBUG is
> enabled.
>
> Signed-off-by: Doug Goldstein <cardoe@cardoe.com>
> ---
> CC: Stefano Stabellini <sstabellini@kernel.org>
> CC: Julien Grall <julien.grall@arm.com>
> CC: Jan Beulich <jbeulich@suse.com>
> CC: Andrew Cooper <andrew.cooper3@citrix.com>
> CC: Daniel De Graaf <dgdegra@tycho.nsa.gov>
> ---
> INSTALL | 1 -
> xen/Kconfig.debug | 6 ++++++
> xen/Rules.mk | 5 -----
> xen/arch/arm/kernel.c | 2 +-
> xen/arch/x86/domain_build.c | 2 +-
> xen/include/xsm/dummy.h | 2 +-
> 6 files changed, 9 insertions(+), 9 deletions(-)
>
> diff --git a/INSTALL b/INSTALL
> index 2974b9b..35668bd 100644
> --- a/INSTALL
> +++ b/INSTALL
> @@ -227,7 +227,6 @@ VGABIOS_REL_DATE="dd Mon yyyy"
>
> The following variables can be used to tweak some aspects of the
> hypervisor build.
> -verbose=y
> perfc=y
> perfc_arrays=y
> lock_profile=y
> diff --git a/xen/Kconfig.debug b/xen/Kconfig.debug
> index ee68f0d..94a6381 100644
> --- a/xen/Kconfig.debug
> +++ b/xen/Kconfig.debug
> @@ -15,4 +15,10 @@ config CRASH_DEBUG
> If you want to be able to attach gdb to Xen to be able to debug
> Xen if it crashes then say Y.
>
> +config VERBOSE_DEBUG
> + bool "Verbose debug messages"
> + default y
> + ---help---
> + Enables the verbose flag when loading ELF images.
..and when guests use HYPERVISOR_console_io
Perhaps:
Guest output from HYPERVISOR_console_io and hypervisor parsing ELF images
(dom0) is logged in the Xen ring buffer?
> +
> endif # DEBUG
> diff --git a/xen/Rules.mk b/xen/Rules.mk
> index c044fd1..b159451 100644
> --- a/xen/Rules.mk
> +++ b/xen/Rules.mk
> @@ -3,7 +3,6 @@
> # If you change any of these configuration options then you must
> # 'make clean' before rebuilding.
> #
> -verbose ?= n
> perfc ?= n
> perfc_arrays ?= n
> lock_profile ?= n
> @@ -17,10 +16,7 @@ include $(XEN_ROOT)/Config.mk
> # Hardcoded configuration implications and dependencies.
> # Do this is a neater way if it becomes unwieldy.
> ifeq ($(debug),y)
> -verbose := y
> frame_pointer := y
> -else
> -CFLAGS += -DNDEBUG
> endif
> ifeq ($(perfc_arrays),y)
> perfc := y
> @@ -59,7 +55,6 @@ ifneq ($(clang),y)
> CFLAGS += -Wa,--strip-local-absolute
> endif
>
> -CFLAGS-$(verbose) += -DVERBOSE
> CFLAGS-$(perfc) += -DPERF_COUNTERS
> CFLAGS-$(perfc_arrays) += -DPERF_ARRAYS
> CFLAGS-$(lock_profile) += -DLOCK_PROFILE
> diff --git a/xen/arch/arm/kernel.c b/xen/arch/arm/kernel.c
> index 9871bd9..3f6cce3 100644
> --- a/xen/arch/arm/kernel.c
> +++ b/xen/arch/arm/kernel.c
> @@ -472,7 +472,7 @@ static int kernel_elf_probe(struct kernel_info *info,
>
> if ( (rc = elf_init(&info->elf.elf, info->elf.kernel_img, size )) != 0 )
> goto err;
> -#ifdef VERBOSE
> +#ifdef CONFIG_VERBOSE_DEBUG
> elf_set_verbose(&info->elf.elf);
> #endif
> elf_parse_binary(&info->elf.elf);
> diff --git a/xen/arch/x86/domain_build.c b/xen/arch/x86/domain_build.c
> index f9a3eca..b29c377 100644
> --- a/xen/arch/x86/domain_build.c
> +++ b/xen/arch/x86/domain_build.c
> @@ -942,7 +942,7 @@ int __init construct_dom0(
>
> if ( (rc = elf_init(&elf, image_start, image_len)) != 0 )
> return rc;
> -#ifdef VERBOSE
> +#ifdef CONFIG_VERBOSE_DEBUG
> elf_set_verbose(&elf);
> #endif
> elf_parse_binary(&elf);
> diff --git a/xen/include/xsm/dummy.h b/xen/include/xsm/dummy.h
> index abbe282..406cd18 100644
> --- a/xen/include/xsm/dummy.h
> +++ b/xen/include/xsm/dummy.h
> @@ -215,7 +215,7 @@ static XSM_INLINE int xsm_memory_stat_reservation(XSM_DEFAULT_ARG struct domain
> static XSM_INLINE int xsm_console_io(XSM_DEFAULT_ARG struct domain *d, int cmd)
> {
> XSM_ASSERT_ACTION(XSM_OTHER);
> -#ifdef VERBOSE
> +#ifdef CONFIG_VERBOSE_DEBUG
> if ( cmd == CONSOLEIO_write )
> return xsm_default_action(XSM_HOOK, d, NULL);
> #endif
> --
> 2.7.3
>
>
> _______________________________________________
> Xen-devel mailing list
> Xen-devel@lists.xen.org
> http://lists.xen.org/xen-devel
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^ permalink raw reply [flat|nested] 17+ messages in thread
* Re: [RFC PATCH 4/7] build: convert frame_pointer to Kconfig
2016-05-02 4:10 ` [RFC PATCH 4/7] build: convert frame_pointer " Doug Goldstein
@ 2016-05-02 15:25 ` Konrad Rzeszutek Wilk
2016-05-02 15:56 ` Jan Beulich
0 siblings, 1 reply; 17+ messages in thread
From: Konrad Rzeszutek Wilk @ 2016-05-02 15:25 UTC (permalink / raw)
To: Doug Goldstein
Cc: Tim Deegan, Stefano Stabellini, Wei Liu, George Dunlap,
Andrew Cooper, Ian Jackson, xen-devel, Jan Beulich
On Sun, May 01, 2016 at 11:10:43PM -0500, Doug Goldstein wrote:
> Converts the frame_pointer option to a Kconfig option.
>
> Signed-off-by: Doug Goldstein <cardoe@cardoe.com>
> ---
> CC: Andrew Cooper <andrew.cooper3@citrix.com>
> CC: George Dunlap <George.Dunlap@eu.citrix.com>
> CC: Ian Jackson <ian.jackson@eu.citrix.com>
> CC: Jan Beulich <jbeulich@suse.com>
> CC: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
> CC: Stefano Stabellini <sstabellini@kernel.org>
> CC: Tim Deegan <tim@xen.org>
> CC: Wei Liu <wei.liu2@citrix.com>
> ---
> INSTALL | 1 -
> xen/Kconfig.debug | 8 ++++++++
> xen/Rules.mk | 6 +-----
> 3 files changed, 9 insertions(+), 6 deletions(-)
>
> diff --git a/INSTALL b/INSTALL
> index 35668bd..f55d42c 100644
> --- a/INSTALL
> +++ b/INSTALL
> @@ -230,7 +230,6 @@ hypervisor build.
> perfc=y
> perfc_arrays=y
> lock_profile=y
> -frame_pointer=y
> lto=y
>
> During tools build external repos will be cloned into the source tree.
> diff --git a/xen/Kconfig.debug b/xen/Kconfig.debug
> index 94a6381..0b2ec50 100644
> --- a/xen/Kconfig.debug
> +++ b/xen/Kconfig.debug
> @@ -15,6 +15,14 @@ config CRASH_DEBUG
> If you want to be able to attach gdb to Xen to be able to debug
> Xen if it crashes then say Y.
>
> +config FRAME_POINTER
> + bool "Compile Xen with frame pointers"
> + default y
> + ---help---
> + If you say Y here the resulting Xen will be slightly larger and
> + maybe slower, but it gives very useful debugging information
The extra cost is:
leaq offs(%rsp),%rbp;
notq %rbp
On entry in hypervisor.
Perhaps just say two extra operations are added on every vmexit ?
Is there an use-case for _not_ having frame pointers?
> + in case of any Xen bugs.
> +
> config VERBOSE_DEBUG
> bool "Verbose debug messages"
> default y
> diff --git a/xen/Rules.mk b/xen/Rules.mk
> index b159451..84b9d81 100644
> --- a/xen/Rules.mk
> +++ b/xen/Rules.mk
> @@ -6,7 +6,6 @@
> perfc ?= n
> perfc_arrays ?= n
> lock_profile ?= n
> -frame_pointer ?= n
> lto ?= n
>
> -include $(BASEDIR)/include/config/auto.conf
> @@ -15,9 +14,6 @@ include $(XEN_ROOT)/Config.mk
>
> # Hardcoded configuration implications and dependencies.
> # Do this is a neater way if it becomes unwieldy.
> -ifeq ($(debug),y)
> -frame_pointer := y
> -endif
> ifeq ($(perfc_arrays),y)
> perfc := y
> endif
> @@ -58,7 +54,7 @@ endif
> CFLAGS-$(perfc) += -DPERF_COUNTERS
> CFLAGS-$(perfc_arrays) += -DPERF_ARRAYS
> CFLAGS-$(lock_profile) += -DLOCK_PROFILE
> -CFLAGS-$(frame_pointer) += -fno-omit-frame-pointer -DCONFIG_FRAME_POINTER
> +CFLAGS-$(CONFIG_FRAME_POINTER) += -fno-omit-frame-pointer
>
> ifneq ($(max_phys_irqs),)
> CFLAGS-y += -DMAX_PHYS_IRQS=$(max_phys_irqs)
> --
> 2.7.3
>
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^ permalink raw reply [flat|nested] 17+ messages in thread
* Re: [RFC PATCH 4/7] build: convert frame_pointer to Kconfig
2016-05-02 15:25 ` Konrad Rzeszutek Wilk
@ 2016-05-02 15:56 ` Jan Beulich
0 siblings, 0 replies; 17+ messages in thread
From: Jan Beulich @ 2016-05-02 15:56 UTC (permalink / raw)
To: Doug Goldstein, Konrad Rzeszutek Wilk
Cc: Tim Deegan, Stefano Stabellini, Wei Liu, George Dunlap,
Andrew Cooper, Ian Jackson, xen-devel
>>> On 02.05.16 at 17:25, <konrad.wilk@oracle.com> wrote:
> On Sun, May 01, 2016 at 11:10:43PM -0500, Doug Goldstein wrote:
>> --- a/xen/Kconfig.debug
>> +++ b/xen/Kconfig.debug
>> @@ -15,6 +15,14 @@ config CRASH_DEBUG
>> If you want to be able to attach gdb to Xen to be able to debug
>> Xen if it crashes then say Y.
>>
>> +config FRAME_POINTER
>> + bool "Compile Xen with frame pointers"
>> + default y
>> + ---help---
>> + If you say Y here the resulting Xen will be slightly larger and
>> + maybe slower, but it gives very useful debugging information
>
> The extra cost is:
>
> leaq offs(%rsp),%rbp;
> notq %rbp
>
> On entry in hypervisor.
An higher register pressure.
> Perhaps just say two extra operations are added on every vmexit ?
>
> Is there an use-case for _not_ having frame pointers?
Yes - having one more register available for the compiler to put
data in. That's why we build with frame pointers in debug mode
only by default.
Jan
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^ permalink raw reply [flat|nested] 17+ messages in thread
* Re: [RFC PATCH 5/7] build: wire up pre-existing debug build flag
2016-05-02 4:10 ` [RFC PATCH 5/7] build: wire up pre-existing debug build flag Doug Goldstein
@ 2016-05-02 16:04 ` Konrad Rzeszutek Wilk
0 siblings, 0 replies; 17+ messages in thread
From: Konrad Rzeszutek Wilk @ 2016-05-02 16:04 UTC (permalink / raw)
To: Doug Goldstein
Cc: Tim Deegan, Stefano Stabellini, Wei Liu, George Dunlap,
Andrew Cooper, Ian Jackson, xen-devel, Jan Beulich
On Sun, May 01, 2016 at 11:10:44PM -0500, Doug Goldstein wrote:
> This allows 'make debug=n' and 'make debug=y' work as it did previously
> but only in the case of the user not having an existing .config file
> from a 'make menuconfig'. This is because the command line 'debug' flag
> can only be used to set the default value and if the user has already
> built up a config their have their real preference set.
s/their have their/with their/ ?
Thank you for making this work.
>
> Signed-off-by: Doug Goldstein <cardoe@cardoe.com>
> ---
> CC: Andrew Cooper <andrew.cooper3@citrix.com>
> CC: George Dunlap <George.Dunlap@eu.citrix.com>
> CC: Ian Jackson <ian.jackson@eu.citrix.com>
> CC: Jan Beulich <jbeulich@suse.com>
> CC: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
> CC: Stefano Stabellini <sstabellini@kernel.org>
> CC: Tim Deegan <tim@xen.org>
> CC: Wei Liu <wei.liu2@citrix.com>
> ---
> xen/Kconfig.debug | 5 +++++
> xen/Makefile | 1 +
> 2 files changed, 6 insertions(+)
>
> diff --git a/xen/Kconfig.debug b/xen/Kconfig.debug
> index 0b2ec50..ec27b09 100644
> --- a/xen/Kconfig.debug
> +++ b/xen/Kconfig.debug
> @@ -1,6 +1,11 @@
> +config DEBUG_ENV
> + bool
> + option env="debug"
>
> menuconfig DEBUG
> bool "Debugging Options"
> + default y if DEBUG_ENV = "y"
> + default n
> ---help---
> If you want to debug Xen say Y and select any additional debugging
> support options. This enables additional debugging through Xen
> diff --git a/xen/Makefile b/xen/Makefile
> index f49014b..e2da895 100644
> --- a/xen/Makefile
> +++ b/xen/Makefile
> @@ -27,6 +27,7 @@ SRCARCH=$(shell echo $(ARCH) | sed -e 's/x86.*/x86/' -e s'/arm\(32\|64\)/arm/g')
> # Don't break if the build process wasn't called from the top level
> # we need XEN_TARGET_ARCH to generate the proper config
> include $(XEN_ROOT)/Config.mk
> +export debug
>
> # Allow someone to change their config file
> export KCONFIG_CONFIG ?= .config
> --
> 2.7.3
>
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^ permalink raw reply [flat|nested] 17+ messages in thread
* Re: [RFC PATCH 7/7] build: convert lock_profile to Kconfig
2016-05-02 4:10 ` [RFC PATCH 7/7] build: convert lock_profile " Doug Goldstein
@ 2016-05-02 16:08 ` Konrad Rzeszutek Wilk
0 siblings, 0 replies; 17+ messages in thread
From: Konrad Rzeszutek Wilk @ 2016-05-02 16:08 UTC (permalink / raw)
To: Doug Goldstein
Cc: Andrew Cooper, Julien Grall, Stefano Stabellini, Jan Beulich, xen-devel
On Sun, May 01, 2016 at 11:10:46PM -0500, Doug Goldstein wrote:
> Convert the 'lock_profile' option to Kconfig as CONFIG_LOCK_PROFILE.
>
> Signed-off-by: Doug Goldstein <cardoe@cardoe.com>
> ---
> CC: Stefano Stabellini <sstabellini@kernel.org>
> CC: Julien Grall <julien.grall@arm.com>
> CC: Jan Beulich <jbeulich@suse.com>
> CC: Andrew Cooper <andrew.cooper3@citrix.com>
> ---
> INSTALL | 1 -
> xen/Kconfig.debug | 6 ++++++
> xen/Rules.mk | 2 --
> xen/arch/arm/xen.lds.S | 2 +-
> xen/arch/x86/domain.c | 2 +-
> xen/arch/x86/xen.lds.S | 2 +-
> xen/common/keyhandler.c | 2 +-
> xen/common/spinlock.c | 10 +++++-----
> xen/common/sysctl.c | 2 +-
> xen/include/xen/spinlock.h | 4 ++--
> 10 files changed, 18 insertions(+), 15 deletions(-)
>
> diff --git a/INSTALL b/INSTALL
> index 623887d..616a67a 100644
> --- a/INSTALL
> +++ b/INSTALL
> @@ -227,7 +227,6 @@ VGABIOS_REL_DATE="dd Mon yyyy"
>
> The following variables can be used to tweak some aspects of the
> hypervisor build.
> -lock_profile=y
> lto=y
>
> During tools build external repos will be cloned into the source tree.
> diff --git a/xen/Kconfig.debug b/xen/Kconfig.debug
> index 4727273..5b370e8 100644
> --- a/xen/Kconfig.debug
> +++ b/xen/Kconfig.debug
> @@ -28,6 +28,12 @@ config FRAME_POINTER
> maybe slower, but it gives very useful debugging information
> in case of any Xen bugs.
>
> +config LOCK_PROFILE
> + bool "Lock Profiiling"
> + default n
> + ---help---
> + Lock Profiling
Would it make sense to also mention what tool one can use this with?
Perhaps:
"Lock profiling allows you to see how often locks are taken and blocked.
You can use serial console to print (and reset) using 'l' and 'L'
respectively, or the 'xenlockprof' tool.
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^ permalink raw reply [flat|nested] 17+ messages in thread
* Re: [RFC PATCH 3/7] build: convert verbose to Kconfig
2016-05-02 15:18 ` Konrad Rzeszutek Wilk
@ 2016-05-03 13:47 ` Doug Goldstein
0 siblings, 0 replies; 17+ messages in thread
From: Doug Goldstein @ 2016-05-03 13:47 UTC (permalink / raw)
To: Konrad Rzeszutek Wilk
Cc: Stefano Stabellini, Andrew Cooper, xen-devel, Julien Grall,
Jan Beulich, Daniel De Graaf
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On 5/2/16 10:18 AM, Konrad Rzeszutek Wilk wrote:
> On Sun, May 01, 2016 at 11:10:42PM -0500, Doug Goldstein wrote:
>> Convert 'verbose', which was enabled by 'debug=y' to Kconfig as
>> CONFIG_VERBOSE_DEBUG which is enabled by default when CONFIG_DEBUG is
>> enabled.
>>
>> Signed-off-by: Doug Goldstein <cardoe@cardoe.com>
>> ---
>> CC: Stefano Stabellini <sstabellini@kernel.org>
>> CC: Julien Grall <julien.grall@arm.com>
>> CC: Jan Beulich <jbeulich@suse.com>
>> CC: Andrew Cooper <andrew.cooper3@citrix.com>
>> CC: Daniel De Graaf <dgdegra@tycho.nsa.gov>
>> ---
>> INSTALL | 1 -
>> xen/Kconfig.debug | 6 ++++++
>> xen/Rules.mk | 5 -----
>> xen/arch/arm/kernel.c | 2 +-
>> xen/arch/x86/domain_build.c | 2 +-
>> xen/include/xsm/dummy.h | 2 +-
>> 6 files changed, 9 insertions(+), 9 deletions(-)
>>
>> diff --git a/INSTALL b/INSTALL
>> index 2974b9b..35668bd 100644
>> --- a/INSTALL
>> +++ b/INSTALL
>> @@ -227,7 +227,6 @@ VGABIOS_REL_DATE="dd Mon yyyy"
>>
>> The following variables can be used to tweak some aspects of the
>> hypervisor build.
>> -verbose=y
>> perfc=y
>> perfc_arrays=y
>> lock_profile=y
>> diff --git a/xen/Kconfig.debug b/xen/Kconfig.debug
>> index ee68f0d..94a6381 100644
>> --- a/xen/Kconfig.debug
>> +++ b/xen/Kconfig.debug
>> @@ -15,4 +15,10 @@ config CRASH_DEBUG
>> If you want to be able to attach gdb to Xen to be able to debug
>> Xen if it crashes then say Y.
>>
>> +config VERBOSE_DEBUG
>> + bool "Verbose debug messages"
>> + default y
>> + ---help---
>> + Enables the verbose flag when loading ELF images.
>
> ..and when guests use HYPERVISOR_console_io
>
> Perhaps:
>
> Guest output from HYPERVISOR_console_io and hypervisor parsing ELF images
> (dom0) is logged in the Xen ring buffer?
Much better. Thanks!
--
Doug Goldstein
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^ permalink raw reply [flat|nested] 17+ messages in thread
end of thread, other threads:[~2016-05-03 13:47 UTC | newest]
Thread overview: 17+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2016-05-02 4:10 [RFC PATCH 0/7] Kconfig debug options Doug Goldstein
2016-05-02 4:10 ` [RFC PATCH 1/7] build: add debug menu to Kconfig Doug Goldstein
2016-05-02 10:42 ` Wei Liu
2016-05-02 11:02 ` Andrew Cooper
2016-05-02 14:35 ` Doug Goldstein
2016-05-02 4:10 ` [RFC PATCH 2/7] build: convert crash_debug " Doug Goldstein
2016-05-02 4:10 ` [RFC PATCH 3/7] build: convert verbose " Doug Goldstein
2016-05-02 15:18 ` Konrad Rzeszutek Wilk
2016-05-03 13:47 ` Doug Goldstein
2016-05-02 4:10 ` [RFC PATCH 4/7] build: convert frame_pointer " Doug Goldstein
2016-05-02 15:25 ` Konrad Rzeszutek Wilk
2016-05-02 15:56 ` Jan Beulich
2016-05-02 4:10 ` [RFC PATCH 5/7] build: wire up pre-existing debug build flag Doug Goldstein
2016-05-02 16:04 ` Konrad Rzeszutek Wilk
2016-05-02 4:10 ` [RFC PATCH 6/7] build: convert perfc{, _arrays} to Kconfig Doug Goldstein
2016-05-02 4:10 ` [RFC PATCH 7/7] build: convert lock_profile " Doug Goldstein
2016-05-02 16:08 ` Konrad Rzeszutek Wilk
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