diff options
| author |   Andi Kleen <ak@linux.intel.com> | 2018-04-06 13:38:11 -0700 |
|---|---|---|
| committer |   Arnaldo Carvalho de Melo <acme@redhat.com> | 2018-04-18 15:35:49 -0300 |
| commit | ec3948451e0ba317e66873b48d6cc51d701d4eb0 (patch) | |
| tree | 4bca26acb5c42fcfbf8ab3347babb47a35785e10 /tools/perf | |
| parent | perf hists browser: Clarify top/report browser help (diff) | |
| download | linux-dev-ec3948451e0ba317e66873b48d6cc51d701d4eb0.tar.xz linux-dev-ec3948451e0ba317e66873b48d6cc51d701d4eb0.zip | |
perf record: Remove misleading error suggestion
When perf record encounters an error setting up an event it suggests
to enable CONFIG_PERF_EVENTS. This is misleading because:
- Usually it is enabled (it is really hard to disable on x86)
- The problem is usually somewhere else, e.g. the CPU is not supported
or an invalid configuration has been used.
Remove the misleading suggestion.
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Link: http://lkml.kernel.org/r/20180406203812.3087-4-andi@firstfloor.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf')
| -rw-r--r-- | tools/perf/util/evsel.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c index 1ac8d9236efd..66b62570c855 100644 --- a/tools/perf/util/evsel.c +++ b/tools/perf/util/evsel.c @@ -2894,8 +2894,7 @@ int perf_evsel__open_strerror(struct perf_evsel *evsel, struct target *target, return scnprintf(msg, size, "The sys_perf_event_open() syscall returned with %d (%s) for event (%s).\n" - "/bin/dmesg may provide additional information.\n" - "No CONFIG_PERF_EVENTS=y kernel support configured?", + "/bin/dmesg | grep -i perf may provide additional information.\n", err, str_error_r(err, sbuf, sizeof(sbuf)), perf_evsel__name(evsel)); } |