diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/um/kernel/time_kern.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/arch/um/kernel/time_kern.c b/arch/um/kernel/time_kern.c index 87cdbc560d36..08dd727e79e4 100644 --- a/arch/um/kernel/time_kern.c +++ b/arch/um/kernel/time_kern.c @@ -96,11 +96,15 @@ void time_init_kern(void) void do_boot_timer_handler(struct sigcontext * sc) { + unsigned long flags; struct pt_regs regs; CHOOSE_MODE((void) (UPT_SC(®s.regs) = sc), (void) (regs.regs.skas.is_user = 0)); + + write_seqlock_irqsave(&xtime_lock, flags); do_timer(®s); + write_sequnlock_irqrestore(&xtime_lock, flags); } static DEFINE_SPINLOCK(timer_spinlock); @@ -125,15 +129,17 @@ irqreturn_t um_timer(int irq, void *dev, struct pt_regs *regs) unsigned long long nsecs; unsigned long flags; + write_seqlock_irqsave(&xtime_lock, flags); + do_timer(regs); - write_seqlock_irqsave(&xtime_lock, flags); nsecs = get_time() + local_offset; xtime.tv_sec = nsecs / NSEC_PER_SEC; xtime.tv_nsec = nsecs - xtime.tv_sec * NSEC_PER_SEC; + write_sequnlock_irqrestore(&xtime_lock, flags); - return(IRQ_HANDLED); + return IRQ_HANDLED; } long um_time(int __user *tloc) |