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| author | Arnaldo Carvalho de Melo <acme@redhat.com> | 2015-12-10 17:48:45 (GMT) |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2015-12-10 18:47:47 (GMT) |
| commit | f8a5c0b24b8b1e77a0812b0c8251db0afc0524b7 (patch) | |
| tree | eb516bdd9f978cf41d151487cd1024b07ed5f09e /tools/perf/builtin-top.c | |
| parent | b3f38fc2422ace049110d1588a67b35bd15b81ce (diff) | |
| download | linux-f8a5c0b24b8b1e77a0812b0c8251db0afc0524b7.tar.xz | |
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@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/n/tip-slu7lj7buzpwgop1vo9la8ma@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/builtin-top.c')
| -rw-r--r-- | tools/perf/builtin-top.c | 7 |
1 files 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) { |