perf stat: Only print NMI watchdog hint when enabled (918c7b06) · Commits · 戴 / test

Only print the NMI watchdog hint when that watchdog it actually enabled. This avoids printing these unnecessarily. Signed-off-by:

tools/perf/builtin-stat.c

+4 −1

Original line number	Diff line number	Diff line
		@@ -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"