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| author | Steven Rostedt <srostedt@redhat.com> | 2010-10-13 23:12:30 +0200 |
|---|---|---|
| committer | Steven Rostedt <rostedt@goodmis.org> | 2010-10-14 22:52:41 +0200 |
| commit | 72441cb1fd77d092f09ddfac748955703884c9a7 (patch) | |
| tree | 3b02aecebf718f1cb6e9752b809e825b237527da /kernel/trace | |
| parent | ftrace: Add C version of recordmcount compile time code (diff) | |
| download | linux-72441cb1fd77d092f09ddfac748955703884c9a7.tar.xz linux-72441cb1fd77d092f09ddfac748955703884c9a7.zip | |
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')
| -rw-r--r-- | kernel/trace/Kconfig | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/kernel/trace/Kconfig b/kernel/trace/Kconfig index 538501c6ea50..df00fbbaf609 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 |