diff options
| -rw-r--r-- | arch/x86/kernel/uv_time.c | 29 |
1 files changed, 17 insertions, 12 deletions
diff --git a/arch/x86/kernel/uv_time.c b/arch/x86/kernel/uv_time.c index 583f11d5c48..ec14889628e 100644 --- a/arch/x86/kernel/uv_time.c +++ b/arch/x86/kernel/uv_time.c @@ -123,7 +123,10 @@ static int uv_setup_intr(int cpu, u64 expires) /* Initialize comparator value */ uv_write_global_mmr64(pnode, UVH_INT_CMPB, expires); - return (expires < uv_read_rtc(NULL) && !uv_intr_pending(pnode)); + if (uv_read_rtc(NULL) <= expires) + return 0; + + return !uv_intr_pending(pnode); } /* @@ -223,6 +226,7 @@ static int uv_rtc_set_timer(int cpu, u64 expires) next_cpu = head->next_cpu; *t = expires; + /* Will this one be next to go off? */ if (next_cpu < 0 || bcpu == next_cpu || expires < head->cpu[next_cpu].expires) { @@ -231,7 +235,7 @@ static int uv_rtc_set_timer(int cpu, u64 expires) *t = ULLONG_MAX; uv_rtc_find_next_timer(head, pnode); spin_unlock_irqrestore(&head->lock, flags); - return 1; + return -ETIME; } } @@ -244,7 +248,7 @@ static int uv_rtc_set_timer(int cpu, u64 expires) * * Returns 1 if this timer was pending. */ -static int uv_rtc_unset_timer(int cpu) +static int uv_rtc_unset_timer(int cpu, int force) { int pnode = uv_cpu_to_pnode(cpu); int bid = uv_cpu_to_blade_id(cpu); @@ -256,14 +260,15 @@ static int uv_rtc_unset_timer(int cpu) spin_lock_irqsave(&head->lock, flags); - if (head->next_cpu == bcpu && uv_read_rtc(NULL) >= *t) + if ((head->next_cpu == bcpu && uv_read_rtc(NULL) >= *t) || force) rc = 1; - *t = ULLONG_MAX; - - /* Was the hardware setup for this timer? */ - if (head->next_cpu == bcpu) - uv_rtc_find_next_timer(head, pnode); + if (rc) { + *t = ULLONG_MAX; + /* Was the hardware setup for this timer? */ + if (head->next_cpu == bcpu) + uv_rtc_find_next_timer(head, pnode); + } spin_unlock_irqrestore(&head->lock, flags); @@ -310,20 +315,20 @@ static void uv_rtc_timer_setup(enum clock_event_mode mode, break; case CLOCK_EVT_MODE_UNUSED: case CLOCK_EVT_MODE_SHUTDOWN: - uv_rtc_unset_timer(ced_cpu); + uv_rtc_unset_timer(ced_cpu, 1); break; } } static void uv_rtc_interrupt(void) { - struct clock_event_device *ced = &__get_cpu_var(cpu_ced); int cpu = smp_processor_id(); + struct clock_event_device *ced = &per_cpu(cpu_ced, cpu); if (!ced || !ced->event_handler) return; - if (uv_rtc_unset_timer(cpu) != 1) + if (uv_rtc_unset_timer(cpu, 0) != 1) return; ced->event_handler(ced); |