perf, trace: Optimize tracepoints by using per-tracepoint-per-cpu hlist to track events

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Avoid the swevent hash-table by using per-tracepoint
hlists.

Also, avoid conditionals on the fast path by ordering
with probe unregister so that we should never get on
the callback path without the data being there.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Steven Rostedt <rostedt@goodmis.org>
LKML-Reference: <20100521090710.473188012@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

...

This commit is contained in:

Peter Zijlstra 2010-05-19 14:02:22 +02:00 • committed by Ingo Molnar

parent b7e2ecef92

commit 1c024eca51

7 changed files with 143 additions and 124 deletions

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16

include/linux/ftrace_event.h

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6

include/linux/perf_event.h

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4

include/trace/ftrace.h

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