perf script: Add support to display lost events
Adding option to display lost events:
$ perf script --show-lost-events ...
mplayer 13810 [002] 468011.402396: 100 cycles:ppp: ff..
mplayer 13810 [002] 468011.402396: PERF_RECORD_LOST lost 3880
mplayer 13810 [002] 468011.402397: 100 cycles:ppp: ff..
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20180107160356.28203-10-jolsa@kernel.org
[ Use PRIu64 when printing u64 values, fixing the build in some arches ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
diff --git a/tools/perf/Documentation/perf-script.txt b/tools/perf/Documentation/perf-script.txt
index 93ae8d6..806ec63 100644
--- a/tools/perf/Documentation/perf-script.txt
+++ b/tools/perf/Documentation/perf-script.txt
@@ -300,6 +300,9 @@
Display context switch events i.e. events of type PERF_RECORD_SWITCH or
PERF_RECORD_SWITCH_CPU_WIDE.
+--show-lost-events
+ Display lost events i.e. events of type PERF_RECORD_LOST.
+
--demangle::
Demangle symbol names to human readable form. It's enabled by default,
disable with --no-demangle.