perf/core: Make sysctl_perf_cpu_time_max_percent conform to documentation

[cascardo/linux.git] / kernel / events / core.c

diff --git a/kernel/events/core.c b/kernel/events/core.c
index 52bedc5..2c78b6f 100644 (file)
--- a/kernel/events/core.c
+++ b/kernel/events/core.c
@@ -412,7 +412,8 @@ int perf_cpu_time_max_percent_handler(struct ctl_table *table, int write,
        if (ret || !write)
                return ret;
 
-       if (sysctl_perf_cpu_time_max_percent == 100) {
+       if (sysctl_perf_cpu_time_max_percent == 100 ||
+           sysctl_perf_cpu_time_max_percent == 0) {
                printk(KERN_WARNING
                       "perf: Dynamic interrupt throttling disabled, can hang your system!\n");
                WRITE_ONCE(perf_sample_allowed_ns, 0);