Commit cfeb1d90 authored Jan 30, 2012 by Arnaldo Carvalho de Melo

perf python: Use attr.watermark in twatch.py



We want to be woken up for every PERF_RECORD_ event, attr.wakeup_events
is only for PERF_RECORD_SAMPLE, so also use attr.watermark = 1 to fix
that.

Suggested-by: Peter Zijlstra <peterz@infradead.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-v3lnpwgrr8mllcr3ntduuqvc@git.kernel.org


Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

parent d30d4a08

tools/perf/python/twatch.py

+1 −1

Original line number	Diff line number	Diff line
		@@ -19,7 +19,7 @@ def main():
		cpus = perf.cpu_map()
		threads = perf.thread_map()
		evsel = perf.evsel(task = 1, comm = 1, mmap = 0,
		wakeup_events = 1, sample_period = 1,
		wakeup_events = 1, watermark = 1,
		sample_id_all = 1,
		sample_type = perf.SAMPLE_PERIOD \| perf.SAMPLE_TID \| perf.SAMPLE_CPU \| perf.SAMPLE_TID)
		evsel.open(cpus = cpus, threads = threads);