diff options
| author | Anton Blanchard <anton@samba.org> | 2011-11-23 21:07:20 +0100 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2011-11-25 04:09:59 +0100 |
| commit | 68568add2ca70153cca3dd1858eaa0776821cf75 (patch) | |
| tree | f266b059287789cb4b88f185b2abb7867ecd172c /arch/powerpc/kernel/time.c | |
| parent | powerpc/time: Use clocksource_register_hz (diff) | |
| download | linux-68568add2ca70153cca3dd1858eaa0776821cf75.tar.xz linux-68568add2ca70153cca3dd1858eaa0776821cf75.zip | |
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 <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/kernel/time.c')
| -rw-r--r-- | arch/powerpc/kernel/time.c | 14 |
1 files changed, 3 insertions, 11 deletions
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()) |