Commit-ID: f8a5c0b24b8b1e77a0812b0c8251db0afc0524b7
Gitweb: http://git.kernel.org/tip/f8a5c0b24b8b1e77a0812b0c8251db0afc0524b7
Author: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
AuthorDate: Thu, 10 Dec 2015 14:48:45 -0300
Committer: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
CommitDate: Thu, 10 Dec 2015 15:47:47 -0300
perf top: Do show usage message when failing to create cpu/thread maps
This is necessary to get rid of the browser dependency from
usage_with_options() and its friends. Because we validate the targets
which are used to create the cpu/thread maps and inform the user about
any override performed via the chosen UI, we don't need to call the
usage routine for that.
Cc: David Ahern <dsahern@xxxxxxxxx>
Cc: Jiri Olsa <jolsa@xxxxxxxxxx>
Cc: Josh Poimboeuf <jpoimboe@xxxxxxxxxx>
Cc: Namhyung Kim <namhyung@xxxxxxxxxx>
Cc: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx>
Link: http://lkml.kernel.org/n/tip-slu7lj7buzpwgop1vo9la8ma@xxxxxxxxxxxxxx
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
---
tools/perf/builtin-top.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c
index 7e2e72e..84fd636 100644
--- a/tools/perf/builtin-top.c
+++ b/tools/perf/builtin-top.c
@@ -1279,8 +1279,11 @@ int cmd_top(int argc, const char **argv, const char *prefix __maybe_unused)
if (target__none(target))
target->system_wide = true;
- if (perf_evlist__create_maps(top.evlist, target) < 0)
- usage_with_options(top_usage, options);
+ if (perf_evlist__create_maps(top.evlist, target) < 0) {
+ ui__error("Couldn't create thread/CPU maps: %s\n",
+ errno == ENOENT ? "No such process" : strerror_r(errno, errbuf, sizeof(errbuf)));
+ goto out_delete_evlist;
+ }
if (!top.evlist->nr_entries &&
perf_evlist__add_default(top.evlist) < 0) {
--
To unsubscribe from this list: send the line "unsubscribe linux-tip-commits" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
|