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| author | Leo Yan <leo.yan@linaro.org> | 2021-04-28 20:09:14 +0800 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2021-04-29 10:31:00 -0300 |
| commit | 050ffc449008eeeafc187dec337d9cf1518f89bc (patch) | |
| tree | 65dd13fd8a21c1cf88a3909035350ddcbd8e7bea /tools/perf | |
| parent | aa616f5a8a2d22a179d5502ebd85045af66fa656 (diff) | |
| download | linux-050ffc449008eeeafc187dec337d9cf1518f89bc.tar.bz2 | |
perf session: Add swap operation for event TIME_CONV
Since commit d110162cafc8 ("perf tsc: Support cap_user_time_short for
event TIME_CONV"), the event PERF_RECORD_TIME_CONV has extended the data
structure for clock parameters.
To be backwards-compatible, this patch adds a dedicated swap operation
for the event PERF_RECORD_TIME_CONV, based on checking if the event
contains field "time_cycles", it can support both for the old and new
event formats.
Fixes: d110162cafc8 ("perf tsc: Support cap_user_time_short for event TIME_CONV")
Signed-off-by: Leo Yan <leo.yan@linaro.org>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Gustavo A. R. Silva <gustavoars@kernel.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Steve MacLean <Steve.MacLean@Microsoft.com>
Cc: Yonatan Goldschmidt <yonatan.goldschmidt@granulate.io>
Link: https://lore.kernel.org/r/20210428120915.7123-4-leo.yan@linaro.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf')
| -rw-r--r-- | tools/perf/util/session.c | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c index a6659b616e6d..cc954b1cfa86 100644 --- a/tools/perf/util/session.c +++ b/tools/perf/util/session.c @@ -949,6 +949,19 @@ static void perf_event__stat_round_swap(union perf_event *event, event->stat_round.time = bswap_64(event->stat_round.time); } +static void perf_event__time_conv_swap(union perf_event *event, + bool sample_id_all __maybe_unused) +{ + event->time_conv.time_shift = bswap_64(event->time_conv.time_shift); + event->time_conv.time_mult = bswap_64(event->time_conv.time_mult); + event->time_conv.time_zero = bswap_64(event->time_conv.time_zero); + + if (event_contains(event->time_conv, time_cycles)) { + event->time_conv.time_cycles = bswap_64(event->time_conv.time_cycles); + event->time_conv.time_mask = bswap_64(event->time_conv.time_mask); + } +} + typedef void (*perf_event__swap_op)(union perf_event *event, bool sample_id_all); @@ -985,7 +998,7 @@ static perf_event__swap_op perf_event__swap_ops[] = { [PERF_RECORD_STAT] = perf_event__stat_swap, [PERF_RECORD_STAT_ROUND] = perf_event__stat_round_swap, [PERF_RECORD_EVENT_UPDATE] = perf_event__event_update_swap, - [PERF_RECORD_TIME_CONV] = perf_event__all64_swap, + [PERF_RECORD_TIME_CONV] = perf_event__time_conv_swap, [PERF_RECORD_HEADER_MAX] = NULL, }; |