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-rw-r--r--arch/um/kernel/time_kern.c10
1 files changed, 8 insertions, 2 deletions
diff --git a/arch/um/kernel/time_kern.c b/arch/um/kernel/time_kern.c
index 87cdbc560d3..08dd727e79e 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(&regs.regs) = sc),
(void) (regs.regs.skas.is_user = 0));
+
+ write_seqlock_irqsave(&xtime_lock, flags);
do_timer(&regs);
+ 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)