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authorAndi Kleen <ak@linux.intel.com>2018-04-06 13:38:11 -0700
committerArnaldo Carvalho de Melo <acme@redhat.com>2018-04-18 15:35:49 -0300
commitec3948451e0ba317e66873b48d6cc51d701d4eb0 (patch)
tree4bca26acb5c42fcfbf8ab3347babb47a35785e10 /tools
parent6a02f06edea5a5910c787fd6c49b0552e8080e5d (diff)
downloadlinux-ec3948451e0ba317e66873b48d6cc51d701d4eb0.tar.bz2
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')
-rw-r--r--tools/perf/util/evsel.c3
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));
}