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-rw-r--r--kernel/trace/trace_hwlat.c8
1 files changed, 5 insertions, 3 deletions
diff --git a/kernel/trace/trace_hwlat.c b/kernel/trace/trace_hwlat.c
index 775569ec50d0..af344a1bf0d0 100644
--- a/kernel/trace/trace_hwlat.c
+++ b/kernel/trace/trace_hwlat.c
@@ -266,7 +266,7 @@ out:
static struct cpumask save_cpumask;
static bool disable_migrate;
-static void move_to_next_cpu(void)
+static void move_to_next_cpu(bool initmask)
{
static struct cpumask *current_mask;
int next_cpu;
@@ -275,7 +275,7 @@ static void move_to_next_cpu(void)
return;
/* Just pick the first CPU on first iteration */
- if (!current_mask) {
+ if (initmask) {
current_mask = &save_cpumask;
get_online_cpus();
cpumask_and(current_mask, cpu_online_mask, tracing_buffer_mask);
@@ -330,10 +330,12 @@ static void move_to_next_cpu(void)
static int kthread_fn(void *data)
{
u64 interval;
+ bool initmask = true;
while (!kthread_should_stop()) {
- move_to_next_cpu();
+ move_to_next_cpu(initmask);
+ initmask = false;
local_irq_disable();
get_sample();