From: Anton Blanchard Date: Wed, 23 Nov 2011 20:07:20 +0000 (+0000) Subject: powerpc/time: Remove unnecessary sanity check of decrementer expiration X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=68568add2c;p=linux-beck.git 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: Anton Blanchard Signed-off-by: Benjamin Herrenschmidt --- diff --git a/arch/powerpc/kernel/time.c b/arch/powerpc/kernel/time.c index d204b726a185..2eaaa242c2e6 100644 --- a/arch/powerpc/kernel/time.c +++ b/arch/powerpc/kernel/time.c @@ -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); - } + decrementer->next_tb = ~(u64)0; + if (evt->event_handler) + evt->event_handler(evt); #ifdef CONFIG_PPC_ISERIES if (firmware_has_feature(FW_FEATURE_ISERIES) && hvlpevent_is_pending())