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| author | Arnaldo Carvalho de Melo <acme@redhat.com> | 2011-10-11 23:15:39 +0400 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2011-10-11 23:16:54 +0400 |
| commit | 900e14a8f5a49e987790b93c7906989b22075f1b (patch) | |
| tree | 384fefd278474a1e03ccc68efbf7ea92e393ee6f /tools/perf/util/ui/browsers | |
| parent | 7588badafcd762034aa962ec86b82cacd4f42f74 (diff) | |
| download | linux-900e14a8f5a49e987790b93c7906989b22075f1b.tar.xz | |
perf hists browser: Recalculate browser pointers after resort/decay
In browsers that access dynamic underlying data structures, like in the
hists browser and its hist_entry rb_tree, we need to revalidate any
reference to the underlying data structure, because they can have gone
away, decayed.
This fixes a problem where after a while the top entries get behind the
top of the screen, i.e. the top_idx stays at 0, which means it is at the
first entry in the rb_tree when in fact it wasn't because the
browser->top didn't got revalidated after the timer ran and the
underlying data structure got updated.
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-mhje66qssdko24q67a2lhlho@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/ui/browsers')
| -rw-r--r-- | tools/perf/util/ui/browsers/hists.c | 9 |
1 files changed, 2 insertions, 7 deletions
diff --git a/tools/perf/util/ui/browsers/hists.c b/tools/perf/util/ui/browsers/hists.c index e64d9527f14e..9ece84353538 100644 --- a/tools/perf/util/ui/browsers/hists.c +++ b/tools/perf/util/ui/browsers/hists.c @@ -332,13 +332,7 @@ static int hist_browser__run(struct hist_browser *self, const char *ev_name, case -1: /* FIXME we need to check if it was es.reason == NEWT_EXIT_TIMER */ timer(arg); - /* - * The timer may have changed the number of entries. - * XXX: Find better way to keep this in synch, probably - * removing this timer function altogether and just sync - * using the hists->lock... - */ - self->b.nr_entries = self->hists->nr_entries; + ui_browser__update_nr_entries(&self->b, self->hists->nr_entries); hists__browser_title(self->hists, title, sizeof(title), ev_name, self->dso_filter, self->thread_filter); @@ -985,6 +979,7 @@ do_annotate: hist_entry__tui_annotate(he, evsel->idx, nr_events, timer, arg, delay_secs); + ui_browser__update_nr_entries(&browser->b, browser->hists->nr_entries); } else if (choice == browse_map) map__browse(browser->selection->map); else if (choice == zoom_dso) { |