linux-kernel - [PATCH V7 2/7] perf tools: fix annotate_browser_

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Date:	Mon, 14 Oct 2013 13:43:39 +0300
From:	Adrian Hunter <adrian.hunter@...el.com>
To:	Arnaldo Carvalho de Melo <acme@...stprotocols.net>
Cc:	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	linux-kernel@...r.kernel.org, David Ahern <dsahern@...il.com>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Jiri Olsa <jolsa@...hat.com>, Mike Galbraith <efault@....de>,
	Namhyung Kim <namhyung@...il.com>,
	Paul Mackerras <paulus@...ba.org>,
	Stephane Eranian <eranian@...gle.com>
Subject: [PATCH V7 2/7] perf tools: fix annotate_browser__callq()

When following a call, annotate_browser__callq()
uses the current symbol's map to look up the
target ip.  That will not work if the target ip
is on a map with a different mapping (i.e.
start - pgoff is different).

Signed-off-by: Adrian Hunter <adrian.hunter@...el.com>
---
 tools/perf/ui/browsers/annotate.c | 21 ++++++++++-----------
 1 file changed, 10 insertions(+), 11 deletions(-)

diff --git a/tools/perf/ui/browsers/annotate.c b/tools/perf/ui/browsers/annotate.c
index 08545ae..57d3a86 100644
--- a/tools/perf/ui/browsers/annotate.c
+++ b/tools/perf/ui/browsers/annotate.c
@@ -442,35 +442,34 @@ static bool annotate_browser__callq(struct annotate_browser *browser,
 {
 	struct map_symbol *ms = browser->b.priv;
 	struct disasm_line *dl = browser->selection;
-	struct symbol *sym = ms->sym;
 	struct annotation *notes;
-	struct symbol *target;
-	u64 ip;
+	struct addr_map_symbol target = {
+		.map = ms->map,
+		.addr = dl->ops.target.addr,
+	};
 	char title[SYM_TITLE_MAX_SIZE];
 
 	if (!ins__is_call(dl->ins))
 		return false;
 
-	ip = ms->map->map_ip(ms->map, dl->ops.target.addr);
-	target = map__find_symbol(ms->map, ip, NULL);
-	if (target == NULL) {
+	if (map_groups__find_ams(&target, NULL)) {
 		ui_helpline__puts("The called function was not found.");
 		return true;
 	}
 
-	notes = symbol__annotation(target);
+	notes = symbol__annotation(target.sym);
 	pthread_mutex_lock(&notes->lock);
 
-	if (notes->src == NULL && symbol__alloc_hist(target) < 0) {
+	if (notes->src == NULL && symbol__alloc_hist(target.sym) < 0) {
 		pthread_mutex_unlock(&notes->lock);
 		ui__warning("Not enough memory for annotating '%s' symbol!\n",
-			    target->name);
+			    target.sym->name);
 		return true;
 	}
 
 	pthread_mutex_unlock(&notes->lock);
-	symbol__tui_annotate(target, ms->map, evsel, hbt);
-	sym_title(sym, ms->map, title, sizeof(title));
+	symbol__tui_annotate(target.sym, target.map, evsel, hbt);
+	sym_title(ms->sym, ms->map, title, sizeof(title));
 	ui_browser__show_title(&browser->b, title);
 	return true;
 }
-- 
1.7.11.7

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