From: Andi Kleen Date: Fri, 6 Apr 2018 20:38:11 +0000 (-0700) Subject: perf record: Remove misleading error suggestion X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=ec3948451e0ba317e66873b48d6cc51d701d4eb0;p=openwrt%2Fstaging%2Fblogic.git 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 Acked-by: Jiri Olsa Link: http://lkml.kernel.org/r/20180406203812.3087-4-andi@firstfloor.org Signed-off-by: Arnaldo Carvalho de Melo --- 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)); }