Commit ef2bf6d0 authored Jan 29, 2011 by Arnaldo Carvalho de Melo

perf events: Account PERF_RECORD_LOST events in event__process



Right now this function is only used by perf top, that uses PROT_READ
only, i.e. overwrite mode, so no PERF_RECORD_LOST events are generated,
but don't forget those events.

The patch that moved this out of perf top was made so that this routine
could be used by 'perf probe' in the uprobes patchset, so perhaps there
they need to check for LOST events and warn the user, as will be done in
the following patches that will switch 'perf top' to non overwrite mode
(mmap with PROT_READ|PROT_WRITE).

Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Cc: Stephane Eranian <eranian@google.com>
Cc: Tom Zanussi <tzanussi@gmail.com>
LKML-Reference: <new-submission>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

parent dc82009a

tools/perf/util/event.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -646,6 +646,8 @@ int event__process(event_t event, struct sample_data sample,
		case PERF_RECORD_EXIT:
		event__process_task(event, sample, session);
		break;
		case PERF_RECORD_LOST:
		event__process_lost(event, sample, session);
		default:
		break;
		}

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