From: Jiri Olsa <jolsa@redhat.com>
Date: Thu, 12 Sep 2013 16:39:36 +0000 (+0200)
Subject: perf kmem: Make it work again on non NUMA machines
X-Git-Tag: firefly_0821_release~3679^2~1423
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=e7fa68ba61691d21444df28ba7b6eb91517c99da;p=firefly-linux-kernel-4.4.55.git

perf kmem: Make it work again on non NUMA machines

commit 4921e320244e099bdf237fd10428594ce5f5b87d upstream.

The commit '2814eb0 perf kmem: Remove die() calls' disabled 'perf kmem'
command for machines without numa support. It made the command fail if
'/sys/devices/system/node' dir wasn't found.

Skipping the numa based initialization in case the directory is not
found and continue execution.

Signed-off-by: Jiri Olsa <jolsa@redhat.com>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1379003976-5839-5-git-send-email-jolsa@redhat.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: zhangzhiqiang <zhangzhiqiang.zhang@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/tools/perf/builtin-kmem.c b/tools/perf/builtin-kmem.c
index 46878daca5cc..c9eac3edfe4d 100644
--- a/tools/perf/builtin-kmem.c
+++ b/tools/perf/builtin-kmem.c
@@ -101,7 +101,7 @@ static int setup_cpunode_map(void)
 
 	dir1 = opendir(PATH_SYS_NODE);
 	if (!dir1)
-		return -1;
+		return 0;
 
 	while ((dent1 = readdir(dir1)) != NULL) {
 		if (dent1->d_type != DT_DIR ||