diff options
| author | Rabin Vincent <rabin@rab.in> | 2010-11-06 20:33:53 +0300 |
|---|---|---|
| committer | Rabin Vincent <rabin@rab.in> | 2010-11-19 19:13:28 +0300 |
| commit | 0e341af835fdf553820a1fa98341b93ab32ce466 (patch) | |
| tree | 633b4088fdf119931a5a3039e6b83bc1b9245a42 /arch/arm/Kconfig.debug | |
| parent | dd686eb13959e49a1112fd608c124ab711050582 (diff) | |
| download | linux-0e341af835fdf553820a1fa98341b93ab32ce466.tar.xz | |
ARM: ftrace: enable function graph tracer
Add the options to enable the function graph tracer on ARM. Function
graph tracer support requires frame pointers, so exclude Thumb-2 and
also make sure FRAME_POINTER gets enabled when FUNCTION_GRAPH_TRACER is
used, since FUNCTION_TRACER doesn't "select FRAME_POINTER" when
ARM_UNWIND is used. Therefore, with GCC 4.4.0+, you get plain function
tracing without frame pointers, but you'll need them if you want
function graph tracing.
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Rabin Vincent <rabin@rab.in>
Diffstat (limited to 'arch/arm/Kconfig.debug')
| -rw-r--r-- | arch/arm/Kconfig.debug | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/arm/Kconfig.debug b/arch/arm/Kconfig.debug index 2fd0b99afc4b..eac62085f5b2 100644 --- a/arch/arm/Kconfig.debug +++ b/arch/arm/Kconfig.debug @@ -23,7 +23,7 @@ config STRICT_DEVMEM config FRAME_POINTER bool depends on !THUMB2_KERNEL - default y if !ARM_UNWIND + default y if !ARM_UNWIND || FUNCTION_GRAPH_TRACER help If you say N here, the resulting kernel will be slightly smaller and faster. However, if neither FRAME_POINTER nor ARM_UNWIND are enabled, |