Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 68568add authored by Anton Blanchard's avatar Anton Blanchard Committed by Benjamin Herrenschmidt
Browse files

powerpc/time: Remove unnecessary sanity check of decrementer expiration 



The clockevents code uses max_delta_ns to avoid calling a
clockevent with too large a value.

Remove the redundant version of this in the timer_interrupt
code.

Signed-off-by: default avatarAnton Blanchard <anton@samba.org>
Signed-off-by: default avatarBenjamin Herrenschmidt <benh@kernel.crashing.org>
parent 11b8633a

arch/powerpc/kernel/time.c

+3 −11
Original line number Diff line number Diff line
@@ -572,7 +572,6 @@ void timer_interrupt(struct pt_regs * regs) 
	struct pt_regs *old_regs;

	struct decrementer_clock *decrementer =  &__get_cpu_var(decrementers);

	struct clock_event_device *evt = &decrementer->event;

	u64 now;



	/* Ensure a positive value is written to the decrementer, or else

	 * some CPUs will continue to take decrementer exceptions.
@@ -607,16 +606,9 @@ void timer_interrupt(struct pt_regs * regs) 
		get_lppaca()->int_dword.fields.decr_int = 0;

#endif



	now = get_tb_or_rtc();

	if (now >= decrementer->next_tb) {

	decrementer->next_tb = ~(u64)0;

	if (evt->event_handler)

		evt->event_handler(evt);

	} else {

		now = decrementer->next_tb - now;

		if (now <= DECREMENTER_MAX)

			set_dec((int)now);

	}



#ifdef CONFIG_PPC_ISERIES

	if (firmware_has_feature(FW_FEATURE_ISERIES) && hvlpevent_is_pending())