linux-kernel - [tip:perf/core] perf tools: Fix missing kernel map load

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Message-ID: <tip-1f2a7069b6e895487b1d9229f5f62799cc4ea0aa@git.kernel.org>
Date:	Thu, 17 Jul 2014 21:23:53 -0700
From:	tip-bot for Adrian Hunter <tipbot@...or.com>
To:	linux-tip-commits@...r.kernel.org
Cc:	acme@...hat.com, linux-kernel@...r.kernel.org, eranian@...gle.com,
	paulus@...ba.org, hpa@...or.com, mingo@...nel.org,
	peterz@...radead.org, namhyung@...il.com, jolsa@...hat.com,
	fweisbec@...il.com, adrian.hunter@...el.com, dsahern@...il.com,
	tglx@...utronix.de
Subject: [tip:perf/core] perf tools: Fix missing kernel map load

Commit-ID:  1f2a7069b6e895487b1d9229f5f62799cc4ea0aa
Gitweb:     http://git.kernel.org/tip/1f2a7069b6e895487b1d9229f5f62799cc4ea0aa
Author:     Adrian Hunter <adrian.hunter@...el.com>
AuthorDate: Mon, 14 Jul 2014 13:02:31 +0300
Committer:  Arnaldo Carvalho de Melo <acme@...hat.com>
CommitDate: Wed, 16 Jul 2014 17:57:34 -0300

perf tools: Fix missing kernel map load

thread__find_addr_map() falls back to trying the kernel maps if the
address is negative and is not found in userspace maps.  As commented in
the code, the kernel maps must be "loaded" before use.  This patch
ensures that happens under the fallback condition also.

Signed-off-by: Adrian Hunter <adrian.hunter@...el.com>
Cc: David Ahern <dsahern@...il.com>
Cc: Frederic Weisbecker <fweisbec@...il.com>
Cc: Jiri Olsa <jolsa@...hat.com>
Cc: Namhyung Kim <namhyung@...il.com>
Cc: Paul Mackerras <paulus@...ba.org>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Stephane Eranian <eranian@...gle.com>
Link: http://lkml.kernel.org/r/1405332185-4050-8-git-send-email-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
---
 tools/perf/util/event.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/tools/perf/util/event.c b/tools/perf/util/event.c
index 198c4cc..7e0e8ae 100644
--- a/tools/perf/util/event.c
+++ b/tools/perf/util/event.c
@@ -788,6 +788,7 @@ try_again:
 		    cpumode == PERF_RECORD_MISC_USER &&
 		    machine && mg != &machine->kmaps) {
 			mg = &machine->kmaps;
+			load_map = true;
 			goto try_again;
 		}
 	} else {
--
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