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>
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@ -283,8 +283,9 @@ static void perf_top__print_sym_table(struct perf_top *top)
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printf("%-*.*s\n", win_width, win_width, graph_dotted_line);
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if (hists->stats.nr_lost_warned !=
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hists->stats.nr_events[PERF_RECORD_LOST]) {
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if (!top->record_opts.overwrite &&
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(hists->stats.nr_lost_warned !=
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hists->stats.nr_events[PERF_RECORD_LOST])) {
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hists->stats.nr_lost_warned =
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hists->stats.nr_events[PERF_RECORD_LOST];
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color_fprintf(stdout, PERF_COLOR_RED,
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@ -611,7 +612,8 @@ static void *display_thread_tui(void *arg)
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perf_evlist__tui_browse_hists(top->evlist, help, &hbt,
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top->min_percent,
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&top->session->header.env, true);
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&top->session->header.env,
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!top->record_opts.overwrite);
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done = 1;
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return NULL;
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