1 files changed, 7 insertions, 2 deletions

diff --git a/kernel/events/core.c b/kernel/events/core.c
index 2067cbb378eb..45e5543e2a1e 100644
--- a/kernel/events/core.c
+++ b/kernel/events/core.c
@@ -243,7 +243,7 @@ static void perf_duration_warn(struct irq_work *w)
         printk_ratelimited(KERN_WARNING
                         "perf interrupt took too long (%lld > %lld), lowering "
                         "kernel.perf_event_max_sample_rate to %d\n",
-                        avg_local_sample_len, allowed_ns,
+                        avg_local_sample_len, allowed_ns >> 1,
                         sysctl_perf_event_sample_rate);
 }
 
@@ -283,7 +283,12 @@ void perf_sample_event_took(u64 sample_len_ns)
 
         update_perf_cpu_limits();
 
-        irq_work_queue(&perf_duration_work);
+        if (!irq_work_queue(&perf_duration_work)) {
+                early_printk("perf interrupt took too long (%lld > %lld), lowering "
+                             "kernel.perf_event_max_sample_rate to %d\n",
+                             avg_local_sample_len, allowed_ns >> 1,
+                             sysctl_perf_event_sample_rate);
+        }
 }
 
 static atomic64_t perf_event_id;