From: Andi Kleen <a...@linux.intel.com> Only print the NMI watchdog hint when that watchdog it actually enabled.
This avoids printing these unnecessarily. Signed-off-by: Andi Kleen <a...@linux.intel.com> Acked-by: Jiri Olsa <jo...@kernel.org> Link: http://lkml.kernel.org/n/tip-lnw7edxnqsphkmeew857w...@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <a...@redhat.com> --- tools/perf/builtin-stat.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c index a935b5023732..ad9324d1daf9 100644 --- a/tools/perf/builtin-stat.c +++ b/tools/perf/builtin-stat.c @@ -1578,6 +1578,7 @@ static void print_header(int argc, const char **argv) static void print_footer(void) { FILE *output = stat_config.output; + int n; if (!null_run) fprintf(output, "\n"); @@ -1590,7 +1591,9 @@ static void print_footer(void) } fprintf(output, "\n\n"); - if (print_free_counters_hint) + if (print_free_counters_hint && + sysctl__read_int("kernel/nmi_watchdog", &n) >= 0 && + n > 0) fprintf(output, "Some events weren't counted. Try disabling the NMI watchdog:\n" " echo 0 > /proc/sys/kernel/nmi_watchdog\n" -- 2.9.4
