diff options
| -rw-r--r-- | sys/kern/kern_intr.c | 8 | ||||
| -rw-r--r-- | sys/sys/interrupt.h | 3 |
2 files changed, 6 insertions, 5 deletions
diff --git a/sys/kern/kern_intr.c b/sys/kern/kern_intr.c index 38c6772..94e2672 100644 --- a/sys/kern/kern_intr.c +++ b/sys/kern/kern_intr.c @@ -83,7 +83,7 @@ void *vm_ih; static MALLOC_DEFINE(M_ITHREAD, "ithread", "Interrupt Threads"); -static int intr_storm_threshold = 500; +static int intr_storm_threshold = 1000; TUNABLE_INT("hw.intr_storm_threshold", &intr_storm_threshold); SYSCTL_INT(_hw, OID_AUTO, intr_storm_threshold, CTLFLAG_RW, &intr_storm_threshold, 0, @@ -698,11 +698,11 @@ ithread_execute_handlers(struct proc *p, struct intr_event *ie) */ if (intr_storm_threshold != 0 && ie->ie_count >= intr_storm_threshold && !(ie->ie_flags & IE_SOFT)) { - if (ie->ie_warned == 0) { + /* Report the message only once every second. */ + if (ppsratecheck(&ie->ie_warntm, &ie->ie_warncnt, 1)) { printf( - "Interrupt storm detected on \"%s\"; throttling interrupt source\n", + "interrupt storm detected on \"%s\"; throttling interrupt source\n", ie->ie_name); - ie->ie_warned = 1; } pause("istorm", 1); } else diff --git a/sys/sys/interrupt.h b/sys/sys/interrupt.h index cfbb28f..9ca87d2 100644 --- a/sys/sys/interrupt.h +++ b/sys/sys/interrupt.h @@ -74,7 +74,8 @@ struct intr_event { void (*ie_enable)(void *); int ie_flags; int ie_count; /* Loop counter. */ - int ie_warned; /* Warned about interrupt storm. */ + int ie_warncnt; /* Rate-check interrupt storm warns. */ + struct timeval ie_warntm; }; /* Interrupt event flags kept in ie_flags. */ |
