From: Peter Oberparleiter <oberpar@linux.vnet.ibm.com>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: linux-kernel@vger.kernel.org, Andi Kleen <andi@firstfloor.org>,
Huang Ying <ying.huang@intel.com>, Li Wei <W.Li@Sun.COM>,
Michael Ellerman <michaele@au1.ibm.com>,
Ingo Molnar <mingo@elte.hu>,
Heiko Carstens <heicars2@linux.vnet.ibm.com>,
Martin Schwidefsky <mschwid2@linux.vnet.ibm.com>
Subject: [PATCH 4/4] gcov: enable GCOV_PROFILE_ALL for x86_64
Date: Tue, 19 May 2009 16:24:20 +0200 [thread overview]
Message-ID: <20090519142419.196994685@linux.vnet.ibm.com> (raw)
In-Reply-To: 20090519142416.356254359@linux.vnet.ibm.com
[-- Attachment #1: gcov-profile-all-x86_64.patch --]
[-- Type: text/plain, Size: 3994 bytes --]
From: Peter Oberparleiter <oberpar@linux.vnet.ibm.com>
Enable gcov profiling of the entire kernel on x86_64. Required changes
include disabling profiling for:
* arch/kernel/acpi/realmode and arch/kernel/boot/compressed:
not linked to main kernel
* arch/vdso, arch/kernel/vsyscall_64 and arch/kernel/hpet:
profiling causes segfaults during boot (incompatible context)
Signed-off-by: Peter Oberparleiter <oberpar@linux.vnet.ibm.com>
---
arch/x86/boot/Makefile | 1 +
arch/x86/boot/compressed/Makefile | 1 +
arch/x86/kernel/Makefile | 2 ++
arch/x86/kernel/acpi/realmode/Makefile | 1 +
arch/x86/vdso/Makefile | 1 +
kernel/gcov/Kconfig | 2 +-
6 files changed, 7 insertions(+), 1 deletion(-)
Index: linux-2.6.30-rc6/kernel/gcov/Kconfig
===================================================================
--- linux-2.6.30-rc6.orig/kernel/gcov/Kconfig 2009-05-19 12:41:26.000000000 +0200
+++ linux-2.6.30-rc6/kernel/gcov/Kconfig 2009-05-19 12:41:27.000000000 +0200
@@ -34,7 +34,7 @@
config GCOV_PROFILE_ALL
bool "Profile entire Kernel"
depends on GCOV_KERNEL
- depends on S390 || X86_32
+ depends on S390 || X86
default n
---help---
This options activates profiling for the entire kernel.
Index: linux-2.6.30-rc6/arch/x86/kernel/acpi/realmode/Makefile
===================================================================
--- linux-2.6.30-rc6.orig/arch/x86/kernel/acpi/realmode/Makefile 2009-05-19 12:27:33.000000000 +0200
+++ linux-2.6.30-rc6/arch/x86/kernel/acpi/realmode/Makefile 2009-05-19 12:41:27.000000000 +0200
@@ -42,6 +42,7 @@
$(call cc-option, -mpreferred-stack-boundary=2)
KBUILD_CFLAGS += $(call cc-option, -m32)
KBUILD_AFLAGS := $(KBUILD_CFLAGS) -D__ASSEMBLY__
+GCOV_PROFILE := n
WAKEUP_OBJS = $(addprefix $(obj)/,$(wakeup-y))
Index: linux-2.6.30-rc6/arch/x86/boot/Makefile
===================================================================
--- linux-2.6.30-rc6.orig/arch/x86/boot/Makefile 2009-05-19 12:27:33.000000000 +0200
+++ linux-2.6.30-rc6/arch/x86/boot/Makefile 2009-05-19 12:41:27.000000000 +0200
@@ -69,6 +69,7 @@
$(call cc-option, -mpreferred-stack-boundary=2)
KBUILD_CFLAGS += $(call cc-option, -m32)
KBUILD_AFLAGS := $(KBUILD_CFLAGS) -D__ASSEMBLY__
+GCOV_PROFILE := n
$(obj)/bzImage: asflags-y := $(SVGA_MODE)
Index: linux-2.6.30-rc6/arch/x86/boot/compressed/Makefile
===================================================================
--- linux-2.6.30-rc6.orig/arch/x86/boot/compressed/Makefile 2009-05-19 12:27:33.000000000 +0200
+++ linux-2.6.30-rc6/arch/x86/boot/compressed/Makefile 2009-05-19 12:41:27.000000000 +0200
@@ -15,6 +15,7 @@
KBUILD_CFLAGS += $(call cc-option,-fno-stack-protector)
KBUILD_AFLAGS := $(KBUILD_CFLAGS) -D__ASSEMBLY__
+GCOV_PROFILE := n
LDFLAGS := -m elf_$(UTS_MACHINE)
LDFLAGS_vmlinux := -T
Index: linux-2.6.30-rc6/arch/x86/vdso/Makefile
===================================================================
--- linux-2.6.30-rc6.orig/arch/x86/vdso/Makefile 2009-05-19 12:27:33.000000000 +0200
+++ linux-2.6.30-rc6/arch/x86/vdso/Makefile 2009-05-19 12:41:27.000000000 +0200
@@ -123,6 +123,7 @@
-Wl,-T,$(filter %.lds,$^) $(filter %.o,$^)
VDSO_LDFLAGS = -fPIC -shared $(call ld-option, -Wl$(comma)--hash-style=sysv)
+GCOV_PROFILE := n
#
# Install the unstripped copy of vdso*.so listed in $(vdso-install-y).
Index: linux-2.6.30-rc6/arch/x86/kernel/Makefile
===================================================================
--- linux-2.6.30-rc6.orig/arch/x86/kernel/Makefile 2009-05-19 12:27:33.000000000 +0200
+++ linux-2.6.30-rc6/arch/x86/kernel/Makefile 2009-05-19 12:41:27.000000000 +0200
@@ -24,6 +24,8 @@
CFLAGS_hpet.o := $(nostackp)
CFLAGS_tsc.o := $(nostackp)
CFLAGS_paravirt.o := $(nostackp)
+GCOV_PROFILE_vsyscall_64.o := n
+GCOV_PROFILE_hpet.o := n
obj-y := process_$(BITS).o signal.o entry_$(BITS).o
obj-y += traps.o irq.o irq_$(BITS).o dumpstack_$(BITS).o
next prev parent reply other threads:[~2009-05-19 14:25 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-05-19 14:24 [PATCH 0/4] gcov kernel support Peter Oberparleiter
2009-05-19 14:24 ` [PATCH 1/4] kernel: constructor support Peter Oberparleiter
2009-05-19 14:24 ` [PATCH 2/4] seq_file: add function to write binary data Peter Oberparleiter
2009-05-19 14:24 ` [PATCH 3/4] gcov: add gcov profiling infrastructure Peter Oberparleiter
2009-05-19 15:00 ` Ingo Molnar
2009-05-22 8:55 ` Peter Oberparleiter
2009-05-22 9:22 ` Andi Kleen
2009-05-19 14:24 ` Peter Oberparleiter [this message]
-- strict thread matches above, loose matches on Subject: below --
2009-06-02 11:43 [PATCH 0/4] gcov kernel support Peter Oberparleiter
2009-06-02 11:44 ` [PATCH 4/4] gcov: enable GCOV_PROFILE_ALL for x86_64 Peter Oberparleiter
2009-05-12 15:38 [PATCH 0/4] gcov kernel support Peter Oberparleiter
2009-05-12 15:38 ` [PATCH 4/4] gcov: enable GCOV_PROFILE_ALL for x86_64 Peter Oberparleiter
2009-05-08 15:44 [PATCH 0/4] gcov kernel support Peter Oberparleiter
2009-05-08 15:44 ` [PATCH 4/4] gcov: enable GCOV_PROFILE_ALL for x86_64 Peter Oberparleiter
2009-05-07 12:45 [PATCH 0/4] gcov kernel support Peter Oberparleiter
2009-05-07 12:46 ` [PATCH 4/4] gcov: enable GCOV_PROFILE_ALL for x86_64 Peter Oberparleiter
2009-02-26 13:52 Peter Oberparleiter
2009-02-03 12:47 Peter Oberparleiter
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