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| author | Kan Liang <kan.liang@intel.com> | 2018-01-18 13:26:30 -0800 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2018-02-15 09:56:43 -0300 |
| commit | a1ff5b05e988ca3620027148cd61013408ea4194 (patch) | |
| tree | a827252c56dd840e212443cf77d4e2cea0ecd01f /tools/perf | |
| parent | 06cc1a470ab237b991901729b125404c164f3660 (diff) | |
| download | linux-a1ff5b05e988ca3620027148cd61013408ea4194.tar.gz linux-a1ff5b05e988ca3620027148cd61013408ea4194.tar.bz2 linux-a1ff5b05e988ca3620027148cd61013408ea4194.zip | |
perf top: Remove lost events checking
There would be some records lost in overwrite mode because of pausing
the ringbuffer. It has little impact for the accuracy of the snapshot
and could be tolerated by 'perf top'.
Remove the lost events checking.
Signed-off-by: Kan Liang <kan.liang@intel.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Jin Yao <yao.jin@linux.intel.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/r/1516310792-208685-16-git-send-email-kan.liang@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf')
| -rw-r--r-- | tools/perf/builtin-top.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c index 7def861a9ec4..59653062bb48 100644 --- a/tools/perf/builtin-top.c +++ b/tools/perf/builtin-top.c @@ -283,8 +283,9 @@ static void perf_top__print_sym_table(struct perf_top *top) printf("%-*.*s\n", win_width, win_width, graph_dotted_line); - if (hists->stats.nr_lost_warned != - hists->stats.nr_events[PERF_RECORD_LOST]) { + if (!top->record_opts.overwrite && + (hists->stats.nr_lost_warned != + hists->stats.nr_events[PERF_RECORD_LOST])) { hists->stats.nr_lost_warned = hists->stats.nr_events[PERF_RECORD_LOST]; color_fprintf(stdout, PERF_COLOR_RED, @@ -611,7 +612,8 @@ static void *display_thread_tui(void *arg) perf_evlist__tui_browse_hists(top->evlist, help, &hbt, top->min_percent, - &top->session->header.env, true); + &top->session->header.env, + !top->record_opts.overwrite); done = 1; return NULL; |