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 46878daca5cc723b3200763e023744e87c7dc2fd..c9eac3edfe4d306fcf574fd1eab62b0738d5b774 100644 (file)
--- 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 ||