perf tools: Allow out of order messages in forced flush
In forced flush (OE_FLUSH__HALF) we break the rules of the flush
timestamp via PERF_RECORD_FINISHED_ROUND event, so we could get out of
order event.
Do not force error in this case plus changing the output warning to use
WARN_ONCE.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Acked-by: David Ahern <dsahern@gmail.com>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jean Pihet <jean.pihet@linaro.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/n/tip-8q8794a8nlmpd1u8xrqmcyd2@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
diff --git a/tools/perf/util/ordered-events.c b/tools/perf/util/ordered-events.c
index 8a8aeab..706ce1a 100644
--- a/tools/perf/util/ordered-events.c
+++ b/tools/perf/util/ordered-events.c
@@ -169,6 +169,7 @@
{
struct ordered_events *oe = &s->ordered_events;
static const char * const str[] = {
+ "NONE",
"FINAL",
"ROUND",
"HALF ",
@@ -198,6 +199,7 @@
}
case OE_FLUSH__ROUND:
+ case OE_FLUSH__NONE:
default:
break;
};
@@ -211,6 +213,8 @@
if (!err) {
if (how == OE_FLUSH__ROUND)
oe->next_flush = oe->max_timestamp;
+
+ oe->last_flush_type = how;
}
pr_oe_time(oe->next_flush, "next_flush - ordered_events__flush POST %s, nr_events %u\n",