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| author | Steven Rostedt <rostedt@goodmis.org> | 2008-07-10 20:58:10 -0400 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-07-11 15:49:18 +0200 |
| commit | 001b6767b1d0c89e458e5ddb039245b268f569fb (patch) | |
| tree | 51d1135647957f9ad1a513103cdd3cfa11694cda /kernel/trace | |
| parent | 007c05d4d2ce42fabd58cb54ed98e0a1714d9d86 (diff) | |
| download | talos-obmc-linux-001b6767b1d0c89e458e5ddb039245b268f569fb.tar.gz talos-obmc-linux-001b6767b1d0c89e458e5ddb039245b268f569fb.zip | |
ftrace: define function trace nop
When CONFIG_FTRACE is not enabled, the tracing_start_functon_trace
and tracing_stop_function_trace should be nops.
Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Cc: Steven Rostedt <srostedt@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel/trace')
| -rw-r--r-- | kernel/trace/trace.h | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/kernel/trace/trace.h b/kernel/trace/trace.h index 6b8bd8800d04..df840f42be39 100644 --- a/kernel/trace/trace.h +++ b/kernel/trace/trace.h @@ -216,8 +216,6 @@ void trace_function(struct trace_array *tr, unsigned long parent_ip, unsigned long flags); -void tracing_start_function_trace(void); -void tracing_stop_function_trace(void); void tracing_start_cmdline_record(void); void tracing_stop_cmdline_record(void); int register_tracer(struct tracer *type); @@ -234,6 +232,14 @@ void update_max_tr_single(struct trace_array *tr, extern cycle_t ftrace_now(int cpu); +#ifdef CONFIG_FTRACE +void tracing_start_function_trace(void); +void tracing_stop_function_trace(void); +#else +# define tracing_start_function_trace() do { } while (0) +# define tracing_stop_function_trace() do { } while (0) +#endif + #ifdef CONFIG_CONTEXT_SWITCH_TRACER typedef void (*tracer_switch_func_t)(void *private, |
