[PATCH] Enable gcov support on the ARM architecture
From: Riku Voipio <hidden>
Date: 2014-09-08 12:59:34
Subsystem:
arm port, gcov based kernel profiling, the rest · Maintainers:
Russell King, Peter Oberparleiter, Linus Torvalds
Enable gcov support for ARM based on original patches by David Singleton and George G. Davis Riku - updated to patch to current mainline kernel. The patch has been submitted in 2010, 2012 - for symmetry, now in 2014 too. https://lwn.net/Articles/390419/ http://marc.info/?l=linux-arm-kernel&m=133823081813044 From: Vincent Sanders <redacted> Cc: Andrey Ryabinin <redacted> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Russell King <redacted> Cc: Naresh Kamboju <redacted> Signed-off-by: Riku Voipio <redacted> Signed-off-by: Vincent Sanders <redacted> --- arch/arm/boot/bootp/Makefile | 2 ++ arch/arm/boot/compressed/Makefile | 2 ++ arch/arm/kernel/Makefile | 2 ++ kernel/gcov/Kconfig | 2 +- 4 files changed, 7 insertions(+), 1 deletion(-)
diff --git a/arch/arm/boot/bootp/Makefile b/arch/arm/boot/bootp/Makefile
index c394e30..5761f00 100644
--- a/arch/arm/boot/bootp/Makefile
+++ b/arch/arm/boot/bootp/Makefile@@ -5,6 +5,8 @@ # architecture-specific flags and dependencies. # +GCOV_PROFILE := n + LDFLAGS_bootp :=-p --no-undefined -X \ --defsym initrd_phys=$(INITRD_PHYS) \ --defsym params_phys=$(PARAMS_PHYS) -T
diff --git a/arch/arm/boot/compressed/Makefile b/arch/arm/boot/compressed/Makefile
index 76a50ec..3ea230a 100644
--- a/arch/arm/boot/compressed/Makefile
+++ b/arch/arm/boot/compressed/Makefile@@ -37,6 +37,8 @@ ifeq ($(CONFIG_ARM_VIRT_EXT),y) OBJS += hyp-stub.o endif +GCOV_PROFILE := n + # # Architecture dependencies #
diff --git a/arch/arm/kernel/Makefile b/arch/arm/kernel/Makefile
index 38ddd9f..979c4e9 100644
--- a/arch/arm/kernel/Makefile
+++ b/arch/arm/kernel/Makefile@@ -5,6 +5,8 @@ CPPFLAGS_vmlinux.lds := -DTEXT_OFFSET=$(TEXT_OFFSET) AFLAGS_head.o := -DTEXT_OFFSET=$(TEXT_OFFSET) +GCOV_PROFILE := n + ifdef CONFIG_FUNCTION_TRACER CFLAGS_REMOVE_ftrace.o = -pg CFLAGS_REMOVE_insn.o = -pg
diff --git a/kernel/gcov/Kconfig b/kernel/gcov/Kconfig
index d04ce8a..cf66c5c 100644
--- a/kernel/gcov/Kconfig
+++ b/kernel/gcov/Kconfig@@ -35,7 +35,7 @@ config GCOV_KERNEL config GCOV_PROFILE_ALL bool "Profile entire Kernel" depends on GCOV_KERNEL - depends on SUPERH || S390 || X86 || PPC || MICROBLAZE + depends on SUPERH || S390 || X86 || PPC || MICROBLAZE || ARM default n ---help--- This options activates profiling for the entire kernel.
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2.0.1