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perf/ftrace: Optimize perf/tracepoint interaction for single events

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When we've got but a single event per tracepoint
there is no reason to try and multiplex it so don't.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Tested-by: Ingo Molnar <mingo@elte.hu>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Peter Zijlstra
2010-05-18 18:08:32 +02:00
committed by Ingo Molnar
parent ef4f30f54e
commit 4f41c013f5
7 changed files with 31 additions and 18 deletions
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3
include/trace/ftrace.h
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@@ -785,7 +785,8 @@ perf_trace_templ_##call(struct ftrace_event_call *event_call, \
{ assign; } \
\
perf_trace_buf_submit(entry, __entry_size, rctx, __addr, \
__count, irq_flags, __regs); \
__count, irq_flags, __regs, \
event_call->perf_data); \
}
#undef DEFINE_EVENT