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| author | AKASHI Takahiro <takahiro.akashi@linaro.org> | 2014-05-20 20:31:04 +0900 |
|---|---|---|
| committer | Steven Rostedt <rostedt@goodmis.org> | 2014-05-21 03:10:32 -0400 |
| commit | eed542d6962ba33a689b4007a389f466e407bd74 (patch) | |
| tree | d7ecb07cb30a0d4f20497fa6ef90d3829b4c701a /arch/xtensa | |
| parent | d6d211db37e75de2ddc3a4f979038c40df7cc79c (diff) | |
| download | op-kernel-dev-eed542d6962ba33a689b4007a389f466e407bd74.zip op-kernel-dev-eed542d6962ba33a689b4007a389f466e407bd74.tar.gz | |
ftrace: Make CALLER_ADDRx macros more generic
Most archs with HAVE_ARCH_CALLER_ADDR have pretty much the same
definitions of CALLER_ADDRx(n). Instead of duplicating the code for all
the archs, define a ftrace_return_address0() and
ftrace_return_address(n) that can be overwritten by the archs if they
need to do something different. Instead of 7 macros in every arch, we
now only have at most 2 (and actually only 1 as
ftrace_return_address0() should be the same for all archs).
The CALLER_ADDRx(n) will now be defined in linux/ftrace.h and use the
ftrace_return_address*(n?) macros. This removes a lot of the duplicate
code.
Link: http://lkml.kernel.org/p/1400585464-30333-1-git-send-email-takahiro.akashi@linaro.org
Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Diffstat (limited to 'arch/xtensa')
| -rw-r--r-- | arch/xtensa/include/asm/ftrace.h | 14 |
1 files changed, 4 insertions, 10 deletions
diff --git a/arch/xtensa/include/asm/ftrace.h b/arch/xtensa/include/asm/ftrace.h index 736b9d2..6c6d9a9 100644 --- a/arch/xtensa/include/asm/ftrace.h +++ b/arch/xtensa/include/asm/ftrace.h @@ -12,24 +12,18 @@ #include <asm/processor.h> -#define HAVE_ARCH_CALLER_ADDR #ifndef __ASSEMBLY__ -#define CALLER_ADDR0 ({ unsigned long a0, a1; \ +#define ftrace_return_address0 ({ unsigned long a0, a1; \ __asm__ __volatile__ ( \ "mov %0, a0\n" \ "mov %1, a1\n" \ : "=r"(a0), "=r"(a1)); \ MAKE_PC_FROM_RA(a0, a1); }) + #ifdef CONFIG_FRAME_POINTER extern unsigned long return_address(unsigned level); -#define CALLER_ADDR1 return_address(1) -#define CALLER_ADDR2 return_address(2) -#define CALLER_ADDR3 return_address(3) -#else /* CONFIG_FRAME_POINTER */ -#define CALLER_ADDR1 (0) -#define CALLER_ADDR2 (0) -#define CALLER_ADDR3 (0) -#endif /* CONFIG_FRAME_POINTER */ +#define ftrace_return_address(n) return_address(n) +#endif #endif /* __ASSEMBLY__ */ #ifdef CONFIG_FUNCTION_TRACER |
