diff options
Diffstat (limited to 'kernel/watchdog.c')
| -rw-r--r-- | kernel/watchdog.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/kernel/watchdog.c b/kernel/watchdog.c index 262691ba62b7..5a93d4c446b8 100644 --- a/kernel/watchdog.c +++ b/kernel/watchdog.c @@ -644,6 +644,14 @@ static int is_softlockup(unsigned long touch_ts, need_counting_irqs()) start_counting_irqs(); + /* + * A poorly behaving BPF scheduler can live-lock the system into + * soft lockups. Tell sched_ext to try ejecting the BPF + * scheduler when close to a soft lockup. + */ + if (time_after_eq(now, period_ts + get_softlockup_thresh() * 3 / 4)) + scx_softlockup(now - touch_ts); + /* Warn about unreasonable delays. */ if (time_after(now, period_ts + get_softlockup_thresh())) return now - touch_ts; |