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perf report: Support a new key to reload the browser 

Sometimes we may need to reload the browser to update the output since
some options are changed.

This patch creates a new key K_RELOAD. Once the __cmd_report() returns
K_RELOAD, it would repeat the whole process, such as, read samples from
data file, sort the data and display in the browser.

 v5:
 ---
 1. Fix the 'make NO_SLANG=1' error. Define K_RELOAD in util/hist.h.
 2. Skip setup_sorting() in repeat path if last key is K_RELOAD.

 v4:
 ---
 Need to quit in perf_evsel_menu__run if key is K_RELOAD.

Signed-off-by: Jin Yao <yao.jin@linux.intel.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lore.kernel.org/lkml/20200220013616.19916-3-yao.jin@linux.intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Jin Yao 2020-02-20 09:36:15 +08:00 committed by Arnaldo Carvalho de Melo
parent 429a5f9d89
commit 5e3b810aac
4 changed files with 6 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
tools/perf/builtin-report.c
View File

@ -635,7 +635,7 @@ static int report__browse_hists(struct report *rep)
* Usually "ret" is the last pressed key, and we only
* care if the key notifies us to switch data file.
*/
if (ret != K_SWITCH_INPUT_DATA)
if (ret != K_SWITCH_INPUT_DATA && ret != K_RELOAD)
ret = 0;
break;
case 2:
@ -1480,7 +1480,7 @@ repeat:
sort_order = sort_tmp;
}
if ((last_key != K_SWITCH_INPUT_DATA) &&
if ((last_key != K_SWITCH_INPUT_DATA && last_key != K_RELOAD) &&
(setup_sorting(session->evlist) < 0)) {
if (sort_order)
parse_options_usage(report_usage, options, "s", 1);
@ -1559,7 +1559,7 @@ repeat:
sort__setup_elide(stdout);
ret = __cmd_report(&report);
if (ret == K_SWITCH_INPUT_DATA) {
if (ret == K_SWITCH_INPUT_DATA || ret == K_RELOAD) {
perf_session__delete(session);
last_key = K_SWITCH_INPUT_DATA;
goto repeat;

1
tools/perf/ui/browsers/hists.c
View File

@ -3495,6 +3495,7 @@ browse_hists:
pos = perf_evsel__prev(pos);
goto browse_hists;
case K_SWITCH_INPUT_DATA:
case K_RELOAD:
case 'q':
case CTRL('c'):
goto out;

1
tools/perf/ui/keysyms.h
View File

@ -25,5 +25,6 @@
#define K_ERROR -2
#define K_RESIZE -3
#define K_SWITCH_INPUT_DATA -4
#define K_RELOAD -5
#endif /* _PERF_KEYSYMS_H_ */

1
tools/perf/util/hist.h
View File

@ -536,6 +536,7 @@ static inline int block_hists_tui_browse(struct block_hist *bh __maybe_unused,
#define K_LEFT -1000
#define K_RIGHT -2000
#define K_SWITCH_INPUT_DATA -3000
#define K_RELOAD -4000
#endif
unsigned int hists__sort_list_width(struct hists *hists);