linux-kernel - [PATCH] perf tools: add prelink suggestion to dso update message

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Message-Id: <1318985085-20776-1-git-send-email-dsahern@gmail.com>
Date:	Tue, 18 Oct 2011 18:44:45 -0600
From:	David Ahern <dsahern@...il.com>
To:	acme@...stprotocols.net, mingo@...e.hu,
	linux-kernel@...r.kernel.org
Cc:	peterz@...radead.org, fweisbec@...il.com,
	David Ahern <dsahern@...il.com>
Subject: [PATCH] perf tools: add prelink suggestion to dso update message

Following a prelink run mapped files for long running processes
can show as deleted. The current message suggests restarting
long running processes. Add to that a suggestion that prelink
might be the cause.

Old message:
/lib64/libc-2.14.so was updated, restart the long running
 apps that use it!

New message:
/lib64/libc-2.14.so was updated (is prelink enabled?).
  Restart the long running apps that use it!

Signed-off-by: David Ahern <dsahern@...il.com>
---
 tools/perf/util/map.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/tools/perf/util/map.c b/tools/perf/util/map.c
index 9cf0d43..78284b1 100644
--- a/tools/perf/util/map.c
+++ b/tools/perf/util/map.c
@@ -139,8 +139,8 @@ int map__load(struct map *self, symbol_filter_t filter)
 
 		if (len > sizeof(DSO__DELETED) &&
 		    strcmp(name + real_len + 1, DSO__DELETED) == 0) {
-			pr_warning("%.*s was updated, restart the long "
-				   "running apps that use it!\n",
+			pr_warning("%.*s was updated (is prelink enabled?). "
+				"Restart the long running apps that use it!\n",
 				   (int)real_len, name);
 		} else {
 			pr_warning("no symbols found in %s, maybe install "
-- 
1.7.6.4

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