diff options
| -rw-r--r-- | MAINTAINERS | 5 | ||||
| -rw-r--r-- | arch/ia64/include/uapi/asm/cmpxchg.h | 2 | ||||
| -rw-r--r-- | arch/ia64/kernel/time.c | 31 |
3 files changed, 20 insertions, 18 deletions
diff --git a/MAINTAINERS b/MAINTAINERS index 2b70b8d5ba45..110715230700 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -8433,11 +8433,8 @@ F: drivers/i3c/ F: include/linux/i3c/ IA64 (Itanium) PLATFORM -M: Tony Luck <tony.luck@intel.com> -M: Fenghua Yu <fenghua.yu@intel.com> L: linux-ia64@vger.kernel.org -S: Odd Fixes -T: git git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux.git +S: Orphan F: Documentation/ia64/ F: arch/ia64/ diff --git a/arch/ia64/include/uapi/asm/cmpxchg.h b/arch/ia64/include/uapi/asm/cmpxchg.h index d69c979936d4..5d90307fd6e0 100644 --- a/arch/ia64/include/uapi/asm/cmpxchg.h +++ b/arch/ia64/include/uapi/asm/cmpxchg.h @@ -54,7 +54,7 @@ extern void ia64_xchg_called_with_bad_pointer(void); }) #define xchg(ptr, x) \ -((__typeof__(*(ptr))) __xchg((unsigned long) (x), (ptr), sizeof(*(ptr)))) +({(__typeof__(*(ptr))) __xchg((unsigned long) (x), (ptr), sizeof(*(ptr)));}) /* * Atomic compare and exchange. Compare OLD with MEM, if identical, diff --git a/arch/ia64/kernel/time.c b/arch/ia64/kernel/time.c index ed9fc3d057a6..43e8050145be 100644 --- a/arch/ia64/kernel/time.c +++ b/arch/ia64/kernel/time.c @@ -171,29 +171,34 @@ void vtime_account_hardirq(struct task_struct *tsk) static irqreturn_t timer_interrupt (int irq, void *dev_id) { - unsigned long cur_itm, new_itm, ticks; + unsigned long new_itm; if (cpu_is_offline(smp_processor_id())) { return IRQ_HANDLED; } new_itm = local_cpu_data->itm_next; - cur_itm = ia64_get_itc(); - if (!time_after(cur_itm, new_itm)) { + if (!time_after(ia64_get_itc(), new_itm)) printk(KERN_ERR "Oops: timer tick before it's due (itc=%lx,itm=%lx)\n", - cur_itm, new_itm); - ticks = 1; - } else { - ticks = DIV_ROUND_UP(cur_itm - new_itm, - local_cpu_data->itm_delta); - new_itm += ticks * local_cpu_data->itm_delta; - } + ia64_get_itc(), new_itm); + + while (1) { + new_itm += local_cpu_data->itm_delta; + + legacy_timer_tick(smp_processor_id() == time_keeper_id); - if (smp_processor_id() != time_keeper_id) - ticks = 0; + local_cpu_data->itm_next = new_itm; - legacy_timer_tick(ticks); + if (time_after(new_itm, ia64_get_itc())) + break; + + /* + * Allow IPIs to interrupt the timer loop. + */ + local_irq_enable(); + local_irq_disable(); + } do { /* |