Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > linux.kernel > #1277629

[PATCH v4 4/9] ppc64 ftrace_with_regs configuration variables

Show all headers | View raw

  * Makefile:
    - globally use -mprofile-kernel in case it's configured.
  * arch/powerpc/Kconfig / kernel/trace/Kconfig:
    - declare that ppc64le HAVE_MPROFILE_KERNEL and
      HAVE_DYNAMIC_FTRACE_WITH_REGS, and use it.

Signed-off-by: Torsten Duwe <duwe@suse.de>
---
 arch/powerpc/Kconfig  | 2 ++
 arch/powerpc/Makefile | 7 +++++++
 kernel/trace/Kconfig  | 5 +++++
 3 files changed, 14 insertions(+)

diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index 9a7057e..55fd59e 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -97,8 +97,10 @@ config PPC
 	select OF_RESERVED_MEM
 	select HAVE_FTRACE_MCOUNT_RECORD
 	select HAVE_DYNAMIC_FTRACE
+	select HAVE_DYNAMIC_FTRACE_WITH_REGS if PPC64 && CPU_LITTLE_ENDIAN
 	select HAVE_FUNCTION_TRACER
 	select HAVE_FUNCTION_GRAPH_TRACER
+	select HAVE_MPROFILE_KERNEL if PPC64 && CPU_LITTLE_ENDIAN
 	select SYSCTL_EXCEPTION_TRACE
 	select ARCH_WANT_OPTIONAL_GPIOLIB
 	select VIRT_TO_BUS if !PPC64
diff --git a/arch/powerpc/Makefile b/arch/powerpc/Makefile
index b9b4af2..25d0034 100644
--- a/arch/powerpc/Makefile
+++ b/arch/powerpc/Makefile
@@ -133,6 +133,13 @@ else
 CFLAGS-$(CONFIG_GENERIC_CPU) += -mcpu=powerpc64
 endif
 
+ifeq ($(CONFIG_PPC64),y)
+ifdef CONFIG_HAVE_MPROFILE_KERNEL
+CC_FLAGS_FTRACE	:= -pg $(call cc-option,-mprofile-kernel)
+KBUILD_CPPFLAGS	+= -DCC_USING_MPROFILE_KERNEL
+endif
+endif
+
 CFLAGS-$(CONFIG_CELL_CPU) += $(call cc-option,-mcpu=cell)
 CFLAGS-$(CONFIG_POWER4_CPU) += $(call cc-option,-mcpu=power4)
 CFLAGS-$(CONFIG_POWER5_CPU) += $(call cc-option,-mcpu=power5)
diff --git a/kernel/trace/Kconfig b/kernel/trace/Kconfig
index 1153c43..dbcb635 100644
--- a/kernel/trace/Kconfig
+++ b/kernel/trace/Kconfig
@@ -52,6 +52,11 @@ config HAVE_FENTRY
 	help
 	  Arch supports the gcc options -pg with -mfentry
 
+config HAVE_MPROFILE_KERNEL
+	bool
+	help
+	  Arch supports the gcc options -pg with -mprofile-kernel
+
 config HAVE_C_RECORDMCOUNT
 	bool
 	help
-- 
1.8.5.6

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

Back to linux.kernel | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread

Thread

[PATCH v4 0/9] ftrace with regs + live patching for ppc64 LE (ABI v2) Torsten Duwe <duwe@lst.de> - 2015-11-25 18:30 +0100
  [PATCH v4 4/9] ppc64 ftrace_with_regs configuration variables Torsten Duwe <duwe@lst.de> - 2015-11-25 18:30 +0100
  [PATCH v4 5/9] ppc64 ftrace_with_regs: spare early boot and low level Torsten Duwe <duwe@lst.de> - 2015-11-25 18:30 +0100
  [PATCH v4 1/9] ppc64 (le): prepare for -mprofile-kernel Torsten Duwe <duwe@lst.de> - 2015-11-25 18:30 +0100
    Re: [PATCH v4 1/9] ppc64 (le): prepare for -mprofile-kernel Denis Kirjanov <kda@linux-powerpc.org> - 2015-11-26 11:20 +0100
      Re: [PATCH v4 1/9] ppc64 (le): prepare for -mprofile-kernel Torsten Duwe <duwe@lst.de> - 2015-11-26 14:00 +0100
  [PATCH v4 8/9] Implement kernel live patching for ppc64le (ABIv2) Torsten Duwe <duwe@lst.de> - 2015-11-25 18:30 +0100
  [PATCH v4 2/9] ppc64le FTRACE_WITH_REGS implementation Torsten Duwe <duwe@lst.de> - 2015-11-25 18:30 +0100
    Re: [PATCH v4 2/9] ppc64le FTRACE_WITH_REGS implementation Denis Kirjanov <kda@linux-powerpc.org> - 2015-11-26 11:10 +0100
      Re: [PATCH v4 2/9] ppc64le FTRACE_WITH_REGS implementation Torsten Duwe <duwe@lst.de> - 2015-11-26 14:00 +0100
  [PATCH v4 9/9] Enable LIVEPATCH to be configured on ppc64le and add  livepatch.o if it is selected. Torsten Duwe <duwe@lst.de> - 2015-11-25 18:40 +0100
  [PATCH v4 6/9] ppc64 ftrace: disable profiling for some functions Torsten Duwe <duwe@lst.de> - 2015-11-25 18:40 +0100
  [PATCH v4 3/9] ppc use ftrace_modify_all_code default Torsten Duwe <duwe@lst.de> - 2015-11-25 18:40 +0100

csiph-web