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perf hists browser: Dynamically change verbosity level 

Here is a small patch which tries to fulfill a point in the perf todo
list:

* Make pressing 'V' multiple times to go on cycling thru various
  verbosity levels in 'perf top', so that info that is present in
  'perf top -v' can be obtained without having to restart the tool
  (acme).

After a small grep in the code, the max verbosity level seems 3; so,
we cycle at 4; I did not dare define a MAX_VERBOSE_LEVEL constant.

Signed-off-by: Alexis Berlemont <alexis.berlemont@gmail.com>
Suggested-and-Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20161012214823.14324-2-alexis.berlemont@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Alexis Berlemont 2016-10-12 23:48:23 +02:00 committed by Arnaldo Carvalho de Melo
parent 042cfb5fa6
commit 21e8c81095
2 changed files with 16 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
tools/perf/ui/browsers/hists.c
View File

@ -2807,7 +2807,10 @@ static int perf_evsel__hists_browse(struct perf_evsel *evsel, int nr_events,
do_zoom_dso(browser, actions);
continue;
case 'V':
browser->show_dso = !browser->show_dso;
verbose = (verbose + 1) % 4;
browser->show_dso = verbose > 0;
ui_helpline__fpush("Verbosity level set to %d\n",
verbose);
continue;
case 't':
actions->thread = thread;

17
tools/perf/util/map.c
View File

@ -682,9 +682,16 @@ static int maps__fixup_overlappings(struct maps *maps, struct map *map, FILE *fp
continue;
if (verbose >= 2) {
fputs("overlapping maps:\n", fp);
map__fprintf(map, fp);
map__fprintf(pos, fp);
if (use_browser) {
pr_warning("overlapping maps in %s "
"(disable tui for more info)\n",
map->dso->name);
} else {
fputs("overlapping maps:\n", fp);
map__fprintf(map, fp);
map__fprintf(pos, fp);
}
}
rb_erase_init(&pos->rb_node, root);
@ -702,7 +709,7 @@ static int maps__fixup_overlappings(struct maps *maps, struct map *map, FILE *fp
before->end = map->start;
__map_groups__insert(pos->groups, before);
if (verbose >= 2)
if (verbose >= 2 && !use_browser)
map__fprintf(before, fp);
map__put(before);
}
@ -717,7 +724,7 @@ static int maps__fixup_overlappings(struct maps *maps, struct map *map, FILE *fp
after->start = map->end;
__map_groups__insert(pos->groups, after);
if (verbose >= 2)
if (verbose >= 2 && !use_browser)
map__fprintf(after, fp);
map__put(after);
}