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author | Namhyung Kim <namhyung.kim@lge.com> | 2013-05-14 11:09:04 +0900 |
---|---|---|
committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2013-05-28 16:24:01 +0300 |
commit | 064f19815c4e99e8b22bc3c5f4d7f4e0b96d226a (patch) | |
tree | 80630db03ec2432aa9a7a4975fa3a6f6fc3ac32b /tools/perf/ui | |
parent | f3dd19817e5bbcae81e96571a3d42aa30a1581fb (diff) | |
download | linux-064f19815c4e99e8b22bc3c5f4d7f4e0b96d226a.tar.gz linux-064f19815c4e99e8b22bc3c5f4d7f4e0b96d226a.tar.bz2 linux-064f19815c4e99e8b22bc3c5f4d7f4e0b96d226a.zip |
perf report: Add --percent-limit option
The --percent-limit option is for not showing small overhead entries in
the output. Maybe we want to set a certain default value like 0.1.
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Acked-by: Pekka Enberg <penberg@kernel.org>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1368497347-9628-7-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/ui')
-rw-r--r-- | tools/perf/ui/browsers/hists.c | 79 | ||||
-rw-r--r-- | tools/perf/ui/gtk/hists.c | 13 | ||||
-rw-r--r-- | tools/perf/ui/stdio/hist.c | 7 |
3 files changed, 84 insertions, 15 deletions
diff --git a/tools/perf/ui/browsers/hists.c b/tools/perf/ui/browsers/hists.c index a4268cab1921..9dfde61505cc 100644 --- a/tools/perf/ui/browsers/hists.c +++ b/tools/perf/ui/browsers/hists.c @@ -25,6 +25,8 @@ struct hist_browser { struct map_symbol *selection; int print_seq; bool show_dso; + float min_pcnt; + u64 nr_pcnt_entries; }; extern void hist_browser__init_hpp(void); @@ -317,6 +319,8 @@ static int hist_browser__run(struct hist_browser *browser, const char *ev_name, browser->b.entries = &browser->hists->entries; browser->b.nr_entries = browser->hists->nr_entries; + if (browser->min_pcnt) + browser->b.nr_entries = browser->nr_pcnt_entries; hist_browser__refresh_dimensions(browser); hists__browser_title(browser->hists, title, sizeof(title), ev_name); @@ -795,10 +799,15 @@ static unsigned int hist_browser__refresh(struct ui_browser *browser) for (nd = browser->top; nd; nd = rb_next(nd)) { struct hist_entry *h = rb_entry(nd, struct hist_entry, rb_node); + float percent = h->stat.period * 100.0 / + hb->hists->stats.total_period; if (h->filtered) continue; + if (percent < hb->min_pcnt) + continue; + row += hist_browser__show_entry(hb, h, row); if (row == browser->height) break; @@ -807,10 +816,18 @@ static unsigned int hist_browser__refresh(struct ui_browser *browser) return row; } -static struct rb_node *hists__filter_entries(struct rb_node *nd) +static struct rb_node *hists__filter_entries(struct rb_node *nd, + struct hists *hists, + float min_pcnt) { while (nd != NULL) { struct hist_entry *h = rb_entry(nd, struct hist_entry, rb_node); + float percent = h->stat.period * 100.0 / + hists->stats.total_period; + + if (percent < min_pcnt) + return NULL; + if (!h->filtered) return nd; @@ -820,11 +837,16 @@ static struct rb_node *hists__filter_entries(struct rb_node *nd) return NULL; } -static struct rb_node *hists__filter_prev_entries(struct rb_node *nd) +static struct rb_node *hists__filter_prev_entries(struct rb_node *nd, + struct hists *hists, + float min_pcnt) { while (nd != NULL) { struct hist_entry *h = rb_entry(nd, struct hist_entry, rb_node); - if (!h->filtered) + float percent = h->stat.period * 100.0 / + hists->stats.total_period; + + if (!h->filtered && percent >= min_pcnt) return nd; nd = rb_prev(nd); @@ -839,6 +861,9 @@ static void ui_browser__hists_seek(struct ui_browser *browser, struct hist_entry *h; struct rb_node *nd; bool first = true; + struct hist_browser *hb; + + hb = container_of(browser, struct hist_browser, b); if (browser->nr_entries == 0) return; @@ -847,13 +872,15 @@ static void ui_browser__hists_seek(struct ui_browser *browser, switch (whence) { case SEEK_SET: - nd = hists__filter_entries(rb_first(browser->entries)); + nd = hists__filter_entries(rb_first(browser->entries), + hb->hists, hb->min_pcnt); break; case SEEK_CUR: nd = browser->top; goto do_offset; case SEEK_END: - nd = hists__filter_prev_entries(rb_last(browser->entries)); + nd = hists__filter_prev_entries(rb_last(browser->entries), + hb->hists, hb->min_pcnt); first = false; break; default: @@ -896,7 +923,8 @@ do_offset: break; } } - nd = hists__filter_entries(rb_next(nd)); + nd = hists__filter_entries(rb_next(nd), hb->hists, + hb->min_pcnt); if (nd == NULL) break; --offset; @@ -929,7 +957,8 @@ do_offset: } } - nd = hists__filter_prev_entries(rb_prev(nd)); + nd = hists__filter_prev_entries(rb_prev(nd), hb->hists, + hb->min_pcnt); if (nd == NULL) break; ++offset; @@ -1098,14 +1127,17 @@ static int hist_browser__fprintf_entry(struct hist_browser *browser, static int hist_browser__fprintf(struct hist_browser *browser, FILE *fp) { - struct rb_node *nd = hists__filter_entries(rb_first(browser->b.entries)); + struct rb_node *nd = hists__filter_entries(rb_first(browser->b.entries), + browser->hists, + browser->min_pcnt); int printed = 0; while (nd) { struct hist_entry *h = rb_entry(nd, struct hist_entry, rb_node); printed += hist_browser__fprintf_entry(browser, h, fp); - nd = hists__filter_entries(rb_next(nd)); + nd = hists__filter_entries(rb_next(nd), browser->hists, + browser->min_pcnt); } return printed; @@ -1324,11 +1356,25 @@ close_file_and_continue: return ret; } +static void hist_browser__update_pcnt_entries(struct hist_browser *hb) +{ + u64 nr_entries = 0; + struct rb_node *nd = rb_first(&hb->hists->entries); + + while (nd) { + nr_entries++; + nd = hists__filter_entries(rb_next(nd), hb->hists, + hb->min_pcnt); + } + + hb->nr_pcnt_entries = nr_entries; +} static int perf_evsel__hists_browse(struct perf_evsel *evsel, int nr_events, const char *helpline, const char *ev_name, bool left_exits, struct hist_browser_timer *hbt, + float min_pcnt, struct perf_session_env *env) { struct hists *hists = &evsel->hists; @@ -1345,6 +1391,11 @@ static int perf_evsel__hists_browse(struct perf_evsel *evsel, int nr_events, if (browser == NULL) return -1; + if (min_pcnt) { + browser->min_pcnt = min_pcnt; + hist_browser__update_pcnt_entries(browser); + } + fstack = pstack__new(2); if (fstack == NULL) goto out; @@ -1684,6 +1735,7 @@ struct perf_evsel_menu { struct ui_browser b; struct perf_evsel *selection; bool lost_events, lost_events_warned; + float min_pcnt; struct perf_session_env *env; }; @@ -1777,6 +1829,7 @@ browse_hists: ev_name = perf_evsel__name(pos); key = perf_evsel__hists_browse(pos, nr_events, help, ev_name, true, hbt, + menu->min_pcnt, menu->env); ui_browser__show_title(&menu->b, title); switch (key) { @@ -1838,6 +1891,7 @@ static bool filter_group_entries(struct ui_browser *self __maybe_unused, static int __perf_evlist__tui_browse_hists(struct perf_evlist *evlist, int nr_entries, const char *help, struct hist_browser_timer *hbt, + float min_pcnt, struct perf_session_env *env) { struct perf_evsel *pos; @@ -1851,6 +1905,7 @@ static int __perf_evlist__tui_browse_hists(struct perf_evlist *evlist, .nr_entries = nr_entries, .priv = evlist, }, + .min_pcnt = min_pcnt, .env = env, }; @@ -1869,6 +1924,7 @@ static int __perf_evlist__tui_browse_hists(struct perf_evlist *evlist, int perf_evlist__tui_browse_hists(struct perf_evlist *evlist, const char *help, struct hist_browser_timer *hbt, + float min_pcnt, struct perf_session_env *env) { int nr_entries = evlist->nr_entries; @@ -1880,7 +1936,8 @@ single_entry: const char *ev_name = perf_evsel__name(first); return perf_evsel__hists_browse(first, nr_entries, help, - ev_name, false, hbt, env); + ev_name, false, hbt, min_pcnt, + env); } if (symbol_conf.event_group) { @@ -1896,5 +1953,5 @@ single_entry: } return __perf_evlist__tui_browse_hists(evlist, nr_entries, help, - hbt, env); + hbt, min_pcnt, env); } diff --git a/tools/perf/ui/gtk/hists.c b/tools/perf/ui/gtk/hists.c index 6f259b3d14e2..9708dd5fb8f3 100644 --- a/tools/perf/ui/gtk/hists.c +++ b/tools/perf/ui/gtk/hists.c @@ -124,7 +124,8 @@ void perf_gtk__init_hpp(void) perf_gtk__hpp_color_overhead_guest_us; } -static void perf_gtk__show_hists(GtkWidget *window, struct hists *hists) +static void perf_gtk__show_hists(GtkWidget *window, struct hists *hists, + float min_pcnt) { struct perf_hpp_fmt *fmt; GType col_types[MAX_COLUMNS]; @@ -189,10 +190,15 @@ static void perf_gtk__show_hists(GtkWidget *window, struct hists *hists) for (nd = rb_first(&hists->entries); nd; nd = rb_next(nd)) { struct hist_entry *h = rb_entry(nd, struct hist_entry, rb_node); GtkTreeIter iter; + float percent = h->stat.period * 100.0 / + hists->stats.total_period; if (h->filtered) continue; + if (percent < min_pcnt) + continue; + gtk_list_store_append(store, &iter); col_idx = 0; @@ -222,7 +228,8 @@ static void perf_gtk__show_hists(GtkWidget *window, struct hists *hists) int perf_evlist__gtk_browse_hists(struct perf_evlist *evlist, const char *help, - struct hist_browser_timer *hbt __maybe_unused) + struct hist_browser_timer *hbt __maybe_unused, + float min_pcnt) { struct perf_evsel *pos; GtkWidget *vbox; @@ -286,7 +293,7 @@ int perf_evlist__gtk_browse_hists(struct perf_evlist *evlist, GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC); - perf_gtk__show_hists(scrolled_window, hists); + perf_gtk__show_hists(scrolled_window, hists, min_pcnt); tab_label = gtk_label_new(evname); diff --git a/tools/perf/ui/stdio/hist.c b/tools/perf/ui/stdio/hist.c index ff1f60cf442e..ae7a75432249 100644 --- a/tools/perf/ui/stdio/hist.c +++ b/tools/perf/ui/stdio/hist.c @@ -334,7 +334,7 @@ static int hist_entry__fprintf(struct hist_entry *he, size_t size, } size_t hists__fprintf(struct hists *hists, bool show_header, int max_rows, - int max_cols, FILE *fp) + int max_cols, float min_pcnt, FILE *fp) { struct perf_hpp_fmt *fmt; struct sort_entry *se; @@ -440,10 +440,15 @@ size_t hists__fprintf(struct hists *hists, bool show_header, int max_rows, print_entries: for (nd = rb_first(&hists->entries); nd; nd = rb_next(nd)) { struct hist_entry *h = rb_entry(nd, struct hist_entry, rb_node); + float percent = h->stat.period * 100.0 / + hists->stats.total_period; if (h->filtered) continue; + if (percent < min_pcnt) + continue; + ret += hist_entry__fprintf(h, max_cols, hists, fp); if (max_rows && ++nr_rows >= max_rows) |