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perf report/top TUI: Fix title line formatting 

In d10ec006dc ("perf hists browser: Allow passing an initial hotkey")
the hist_entry__title() call was cut'n'pasted to a function where the
'title' variable is a pointer, not an array, so the sizeof(title)
continues syntactically valid but ends up reducing the real size of the
buffer where to format the first line in the screen to 8 bytes, which
makes the formatting at the title at each refresh to produce just the
string "Samples ", duh, fix it by passing the size of the buffer.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jin Yao <yao.jin@linux.intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Fixes: d10ec006dc ("perf hists browser: Allow passing an initial hotkey")
Link: http://lore.kernel.org/lkml/20200330154314.GB4576@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Arnaldo Carvalho de Melo 2020-03-30 12:35:21 -03:00
parent 2605af0f32
commit 376c3c22e2
1 changed files with 4 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
tools/perf/ui/browsers/hists.c
View File

@ -677,7 +677,7 @@ static int hist_browser__title(struct hist_browser *browser, char *bf, size_t si
return browser->title ? browser->title(browser, bf, size) : 0;
}
static int hist_browser__handle_hotkey(struct hist_browser *browser, bool warn_lost_event, char *title, int key)
static int hist_browser__handle_hotkey(struct hist_browser *browser, bool warn_lost_event, char *title, size_t size, int key)
{
switch (key) {
case K_TIMER: {
@ -703,7 +703,7 @@ static int hist_browser__handle_hotkey(struct hist_browser *browser, bool warn_l
ui_browser__warn_lost_events(&browser->b);
}
hist_browser__title(browser, title, sizeof(title));
hist_browser__title(browser, title, size);
ui_browser__show_title(&browser->b, title);
break;
}
@ -764,13 +764,13 @@ 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 && hist_browser__handle_hotkey(browser, warn_lost_event, title, key))
if (key && hist_browser__handle_hotkey(browser, warn_lost_event, title, sizeof(title), key))
goto out;
while (1) {
key = ui_browser__run(&browser->b, delay_secs);
if (hist_browser__handle_hotkey(browser, warn_lost_event, title, key))
if (hist_browser__handle_hotkey(browser, warn_lost_event, title, sizeof(title), key))
break;
}
out: