diff options
| author |   Oleg Nesterov <oleg@redhat.com> | 2013-06-17 19:02:11 +0200 |
|---|---|---|
| committer |   Steven Rostedt <rostedt@goodmis.org> | 2013-07-18 21:31:28 -0400 |
| commit | cd92bf61d6d70bd3eb33b46d600e3f3eb9c5778a (patch) | |
| tree | 7f02ec47e54b3fa2a139a21bbcfed90318de79d3 /include/trace | |
| parent | tracing/syscall: Avoid perf_trace_buf_*() if sys_data->perf_events is empty (diff) | |
| download | linux-dev-cd92bf61d6d70bd3eb33b46d600e3f3eb9c5778a.tar.xz linux-dev-cd92bf61d6d70bd3eb33b46d600e3f3eb9c5778a.zip | |
tracing/perf: Move the PERF_MAX_TRACE_SIZE check into perf_trace_buf_prepare()
Every perf_trace_buf_prepare() caller does
WARN_ONCE(size > PERF_MAX_TRACE_SIZE, message) and "message" is
almost the same.
Shift this WARN_ONCE() into perf_trace_buf_prepare(). This changes
the meaning of _ONCE, but I think this is fine.
- 4947014 2932448 10104832 17984294 1126b26 vmlinux
+ 4948422 2932448 10104832 17985702 11270a6 vmlinux
on my build.
Link: http://lkml.kernel.org/r/20130617170211.GA19813@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 'include/trace')
| -rw-r--r-- | include/trace/ftrace.h | 4 |
1 files changed, 0 insertions, 4 deletions
diff --git a/include/trace/ftrace.h b/include/trace/ftrace.h index d615f78cc6b6..41a6643e2136 100644 --- a/include/trace/ftrace.h +++ b/include/trace/ftrace.h @@ -670,10 +670,6 @@ perf_trace_##call(void *__data, proto) \ sizeof(u64)); \ __entry_size -= sizeof(u32); \ \ - if (WARN_ONCE(__entry_size > PERF_MAX_TRACE_SIZE, \ - "profile buffer not large enough")) \ - return; \ - \ entry = (struct ftrace_raw_##call *)perf_trace_buf_prepare( \ __entry_size, event_call->event.type, &__regs, &rctx); \ if (!entry) \ |