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authorSteven Rostedt <srostedt@redhat.com>2010-10-13 17:12:30 -0400
committerSteven Rostedt <rostedt@goodmis.org>2010-10-14 16:52:41 -0400
commit72441cb1fd77d092f09ddfac748955703884c9a7 (patch)
tree3b02aecebf718f1cb6e9752b809e825b237527da /kernel/trace/Kconfig
parent81d3858d3131a589cade0d8b57f95cc1fc699b89 (diff)
downloadop-kernel-dev-72441cb1fd77d092f09ddfac748955703884c9a7.zip
op-kernel-dev-72441cb1fd77d092f09ddfac748955703884c9a7.tar.gz
ftrace/x86: Add support for C version of recordmcount
This patch adds the support for the C version of recordmcount and compile times show ~ 12% improvement. After verifying this works, other archs can add: HAVE_C_MCOUNT_RECORD in its Kconfig and it will use the C version of recordmcount instead of the perl version. Cc: <linux-arch@vger.kernel.org> Cc: Michal Marek <mmarek@suse.cz> Cc: linux-kbuild@vger.kernel.org Cc: John Reiser <jreiser@bitwagon.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Diffstat (limited to 'kernel/trace/Kconfig')
-rw-r--r--kernel/trace/Kconfig5
1 files changed, 5 insertions, 0 deletions
diff --git a/kernel/trace/Kconfig b/kernel/trace/Kconfig
index 538501c..df00fbb 100644
--- a/kernel/trace/Kconfig
+++ b/kernel/trace/Kconfig
@@ -49,6 +49,11 @@ config HAVE_SYSCALL_TRACEPOINTS
help
See Documentation/trace/ftrace-design.txt
+config HAVE_C_MCOUNT_RECORD
+ bool
+ help
+ C version of recordmcount available?
+
config TRACER_MAX_TRACE
bool
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