Commit 3166fc8f authored Mar 01, 2011 by Arnaldo Carvalho de Melo

perf top browser: Handle empty active symbols list



Fixing a SEGV. An empty list could happen when not being able to resolve
symbols, for instance when --vmlinux invalid-file is used.

Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Tom Zanussi <tzanussi@gmail.com>
LKML-Reference: <new-submission>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

parent b210b3bb

tools/perf/util/ui/browsers/top.c

+6 −0

Original line number	Diff line number	Diff line
		@@ -76,6 +76,12 @@ static void perf_top_browser__update_rb_tree(struct perf_top_browser *browser)
		browser->root = RB_ROOT;
		browser->b.top = NULL;
		browser->sum_ksamples = perf_top__decay_samples(top, &browser->root);
		/*
		* No active symbols
		*/
		if (top->rb_entries == 0)
		return;

		perf_top__find_widths(top, &browser->root, &browser->dso_width,
		&browser->dso_short_width,
		&browser->sym_width);