diff options
| author |   Steven Rostedt <srostedt@redhat.com> | 2008-11-05 16:05:44 -0500 |
|---|---|---|
| committer |   Ingo Molnar <mingo@elte.hu> | 2008-11-06 07:50:57 +0100 |
| commit | 0f04870148ecb825133bc2733f473b1c5773ac0b (patch) | |
| tree | 81399b7b9535d11ac6120366fc01fd051118226a /include/linux/ftrace.h | |
| parent | ftrace: add quick function trace stop (diff) | |
| download | linux-dev-0f04870148ecb825133bc2733f473b1c5773ac0b.tar.xz linux-dev-0f04870148ecb825133bc2733f473b1c5773ac0b.zip | |
ftrace: soft tracing stop and start
Impact: add way to quickly start stop tracing from the kernel
This patch adds a soft stop and start to the trace. This simply
disables function tracing via the ftrace_disabled flag, and
disables the trace buffers to prevent recording. The tracing
code may still be executed, but the trace will not be recorded.
Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'include/linux/ftrace.h')
| -rw-r--r-- | include/linux/ftrace.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/include/linux/ftrace.h b/include/linux/ftrace.h index 794ab907dbfe..7a75fc6d41f4 100644 --- a/include/linux/ftrace.h +++ b/include/linux/ftrace.h @@ -216,6 +216,9 @@ static inline void __ftrace_enabled_restore(int enabled) #ifdef CONFIG_TRACING extern int ftrace_dump_on_oops; +extern void tracing_start(void); +extern void tracing_stop(void); + extern void ftrace_special(unsigned long arg1, unsigned long arg2, unsigned long arg3); @@ -246,6 +249,8 @@ ftrace_special(unsigned long arg1, unsigned long arg2, unsigned long arg3) { } static inline int ftrace_printk(const char *fmt, ...) __attribute__ ((format (printf, 1, 0))); +static inline void tracing_start(void) { } +static inline void tracing_stop(void) { } static inline int ftrace_printk(const char *fmt, ...) { |