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authorNamhyung Kim <namhyung@kernel.org>2016-01-09 13:16:29 +0300
committerArnaldo Carvalho de Melo <acme@redhat.com>2016-01-12 18:42:08 +0300
commit34b7b0f95d41d2351a080e774d71085171db90e6 (patch)
tree065cfa3b53e86cd17ba2b4b13fc0179e58bd9fe4 /tools/perf/util/util.c
parent090cff3eae8f02395009972d01b5dfdb95bcc327 (diff)
downloadlinux-34b7b0f95d41d2351a080e774d71085171db90e6.tar.xz
perf tools: Fallback to srcdir/Documentation/tips.txt
Some people don't install perf, but just use compiled version in the source. Fallback to lookup the source directory for those poor guys. :) Signed-off-by: Namhyung Kim <namhyung@kernel.org> Cc: Andi Kleen <andi@firstfloor.org> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/r/1452334589-8782-4-git-send-email-namhyung@kernel.org [ Make perf_tip() return NULL for ENOENT, making the fallback to really take place ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/util.c')
-rw-r--r--tools/perf/util/util.c11
1 files changed, 6 insertions, 5 deletions
diff --git a/tools/perf/util/util.c b/tools/perf/util/util.c
index 88b8f8d21f58..ead9509835d2 100644
--- a/tools/perf/util/util.c
+++ b/tools/perf/util/util.c
@@ -17,7 +17,6 @@
#include <unistd.h>
#include "callchain.h"
#include "strlist.h"
-#include <subcmd/exec-cmd.h>
struct callchain_param callchain_param = {
.mode = CHAIN_GRAPH_ABS,
@@ -672,14 +671,16 @@ const char *perf_tip(const char *dirpath)
struct str_node *node;
char *tip = NULL;
struct strlist_config conf = {
- .dirname = system_path(dirpath) ,
+ .dirname = dirpath,
+ .file_only = true,
};
tips = strlist__new("tips.txt", &conf);
- if (tips == NULL || strlist__nr_entries(tips) == 1) {
- tip = (char *)"Cannot find tips.txt file";
+ if (tips == NULL)
+ return errno == ENOENT ? NULL : "Tip: get more memory! ;-p";
+
+ if (strlist__nr_entries(tips) == 0)
goto out;
- }
node = strlist__entry(tips, random() % strlist__nr_entries(tips));
if (asprintf(&tip, "Tip: %s", node->s) < 0)