[PATCH 07/12] perf hists browser: Allow passing an initial hotkey

Arnaldo Carvalho de Melo
2019-12-17T14:49:41Z

From: Arnaldo Carvalho de Melo <acme@redhat.com>

Sometimes we're in an outer code, like the main hists browser popup menu
and the user follows a suggestion about using some hotkey, and that
hotkey is really handled by hists_browser__run(), so allow for calling
it with that hotkey, making it handle it instead of waiting for the user
to press one.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Jin Yao <yao.jin@linux.intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kan Liang <kan.liang@intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lkml.kernel.org/n/tip-i0kwpuicoy4p1tyrw5k054zq@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
tools/perf/builtin-c2c.c | 4 ++--
tools/perf/ui/browsers/hists.c | 13 +++++++------
tools/perf/ui/browsers/hists.h | 2 +-
3 files changed, 10 insertions(+), 9 deletions(-)

diff --git a/tools/perf/builtin-c2c.c b/tools/perf/builtin-c2c.c
index e69f44941aad..346351260c0b 100644
--- a/tools/perf/builtin-c2c.c
+++ b/tools/perf/builtin-c2c.c
@@ -2384,7 +2384,7 @@ static int perf_c2c__browse_cacheline(struct hist_entry *he)
c2c_browser__update_nr_entries(browser);

while (1) {
- key = hist_browser__run(browser, "? - help", true);
+ key = hist_browser__run(browser, "? - help", true, 0);

switch (key) {
case 's':
@@ -2453,7 +2453,7 @@ static int perf_c2c__hists_browse(struct hists *hists)
c2c_browser__update_nr_entries(browser);

while (1) {
- key = hist_browser__run(browser, "? - help", true);
+ key = hist_browser__run(browser, "? - help", true, 0);

switch (key) {
case 'q':
diff --git a/tools/perf/ui/browsers/hists.c b/tools/perf/ui/browsers/hists.c
index 6dfdd8d5a743..3b7af5a8d101 100644
--- a/tools/perf/ui/browsers/hists.c
+++ b/tools/perf/ui/browsers/hists.c
@@ -673,9 +673,8 @@ static int hist_browser__title(struct hist_browser *browser, char *bf, size_t si
}

int hist_browser__run(struct hist_browser *browser, const char *help,
- bool warn_lost_event)
+ bool warn_lost_event, int key)
{
- int key;
char title[160];
struct hist_browser_timer *hbt = browser->hbt;
int delay_secs = hbt ? hbt->refresh : 0;
@@ -688,9 +687,12 @@ int hist_browser__run(struct hist_browser *browser, const char *help,
if (ui_browser__show(&browser->b, title, "%s", help) < 0)
return -1;

+ if (key)
+ goto do_hotkey;
+
while (1) {
key = ui_browser__run(&browser->b, delay_secs);
-
+do_hotkey:
switch (key) {
case K_TIMER: {
u64 nr_entries;
@@ -2994,8 +2996,7 @@ static int perf_evsel__hists_browse(struct evsel *evsel, int nr_events,

nr_options = 0;

- key = hist_browser__run(browser, helpline,
- warn_lost_event);
+ key = hist_browser__run(browser, helpline, warn_lost_event, 0);

if (browser->he_selection != NULL) {
thread = hist_browser__selected_thread(browser);
@@ -3573,7 +3574,7 @@ int block_hists_tui_browse(struct block_hist *bh, struct evsel *evsel,
memset(&action, 0, sizeof(action));

while (1) {
- key = hist_browser__run(browser, "? - help", true);
+ key = hist_browser__run(browser, "? - help", true, 0);

switch (key) {
case 'q':
diff --git a/tools/perf/ui/browsers/hists.h b/tools/perf/ui/browsers/hists.h
index 078f2f2c7abd..1e938d9ffa5e 100644
--- a/tools/perf/ui/browsers/hists.h
+++ b/tools/perf/ui/browsers/hists.h
@@ -34,7 +34,7 @@ struct hist_browser {
struct hist_browser *hist_browser__new(struct hists *hists);
void hist_browser__delete(struct hist_browser *browser);
int hist_browser__run(struct hist_browser *browser, const char *help,
- bool warn_lost_event);
+ bool warn_lost_event, int key);
void hist_browser__init(struct hist_browser *browser,
struct hists *hists);
#endif /* _PERF_UI_BROWSER_HISTS_H_ */
--
2.21.0