Commit-ID: b62e8dfcda8cb133c062c0e1207afea2476eb7fd
Gitweb: http://git.kernel.org/tip/b62e8dfcda8cb133c062c0e1207afea2476eb7fd
Author: Namhyung Kim <namhyung@xxxxxxxxxx>
AuthorDate: Wed, 3 Feb 2016 23:11:23 +0900
Committer: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
CommitDate: Wed, 3 Feb 2016 12:24:22 -0300
perf hists browser: Add 'L' hotkey to change percent limit
Add 'L' key action to change the percent limit applied to both of hist
entries and callchains.
Suggested-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
Signed-off-by: Namhyung Kim <namhyung@xxxxxxxxxx>
Cc: Andi Kleen <andi@xxxxxxxxxxxxxx>
Cc: David Ahern <dsahern@xxxxxxxxx>
Cc: Jiri Olsa <jolsa@xxxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Stephane Eranian <eranian@xxxxxxxxxx>
Cc: Wang Nan <wangnan0@xxxxxxxxxx>
Link: http://lkml.kernel.org/r/1454508683-5735-4-git-send-email-namhyung@xxxxxxxxxx
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
---
tools/perf/ui/browsers/hists.c | 55 ++++++++++++++++++++++++++++++++++++++++++
1 file changed, 55 insertions(+)
diff --git a/tools/perf/ui/browsers/hists.c b/tools/perf/ui/browsers/hists.c
index 3a1e096..a5a5390 100644
--- a/tools/perf/ui/browsers/hists.c
+++ b/tools/perf/ui/browsers/hists.c
@@ -2029,6 +2029,42 @@ static void hist_browser__update_nr_entries(struct hist_browser *hb)
hb->nr_non_filtered_entries = nr_entries;
}
+static void hist_browser__update_percent_limit(struct hist_browser *hb,
+ double percent)
+{
+ struct hist_entry *he;
+ struct rb_node *nd = rb_first(&hb->hists->entries);
+ u64 total = hists__total_period(hb->hists);
+ u64 min_callchain_hits = total * (percent / 100);
+
+ hb->min_pcnt = callchain_param.min_percent = percent;
+
+ if (!symbol_conf.use_callchain)
+ return;
+
+ while ((nd = hists__filter_entries(nd, hb->min_pcnt)) != NULL) {
+ he = rb_entry(nd, struct hist_entry, rb_node);
+
+ if (callchain_param.mode == CHAIN_GRAPH_REL) {
+ total = he->stat.period;
+
+ if (symbol_conf.cumulate_callchain)
+ total = he->stat_acc->period;
+
+ min_callchain_hits = total * (percent / 100);
+ }
+
+ callchain_param.sort(&he->sorted_chain, he->callchain,
+ min_callchain_hits, &callchain_param);
+
+ /* force to re-evaluate folding state of callchains */
+ he->init_have_children = false;
+ hist_entry__set_folding(he, false);
+
+ nd = rb_next(nd);
+ }
+}
+
static int perf_evsel__hists_browse(struct perf_evsel *evsel, int nr_events,
const char *helpline,
bool left_exits,
@@ -2064,6 +2100,7 @@ static int perf_evsel__hists_browse(struct perf_evsel *evsel, int nr_events,
"E Expand all callchains\n" \
"F Toggle percentage of filtered entries\n" \
"H Display column headers\n" \
+ "L Change percent limit\n" \
"m Display context menu\n" \
"S Zoom into current Processor Socket\n" \
@@ -2219,6 +2256,24 @@ static int perf_evsel__hists_browse(struct perf_evsel *evsel, int nr_events,
top->zero = !top->zero;
}
continue;
+ case 'L':
+ if (ui_browser__input_window("Percent Limit",
+ "Please enter the value you want to hide entries under that percent.",
+ buf, "ENTER: OK, ESC: Cancel",
+ delay_secs * 2) == K_ENTER) {
+ char *end;
+ double new_percent = strtod(buf, &end);
+
+ if (new_percent < 0 || new_percent > 100) {
+ ui_browser__warning(&browser->b, delay_secs * 2,
+ "Invalid percent: %.2f", new_percent);
+ continue;
+ }
+
+ hist_browser__update_percent_limit(browser, new_percent);
+ hist_browser__reset(browser);
+ }
+ continue;
case K_F1:
case 'h':
case '?':
--
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