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| author | Oleg Nesterov <oleg@redhat.com> | 2013-06-17 21:02:04 +0400 |
|---|---|---|
| committer | Steven Rostedt <rostedt@goodmis.org> | 2013-07-19 05:31:27 +0400 |
| commit | b8ebfd3f7113b63dda93d76bfec638c00e6bd514 (patch) | |
| tree | 5a72a20c5fa86fe1c284308111132345f249c671 /kernel/trace/trace_syscalls.c | |
| parent | d611851b421731e2afd9cb956daae001af57a423 (diff) | |
| download | linux-b8ebfd3f7113b63dda93d76bfec638c00e6bd514.tar.xz | |
tracing/function: Avoid perf_trace_buf_*() if event_function.perf_events is empty
perf_trace_buf_prepare() + perf_trace_buf_submit(head, task => NULL)
make no sense if hlist_empty(head). Change perf_ftrace_function_call()
to check event_function.perf_events beforehand.
Link: http://lkml.kernel.org/r/20130617170204.GA19803@redhat.com
Acked-by: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Diffstat (limited to 'kernel/trace/trace_syscalls.c')
0 files changed, 0 insertions, 0 deletions