From: Kevin Hao Date: Wed, 17 Apr 2013 09:50:35 +0000 (+0800) Subject: powerpc: Remove the unneeded trigger of decrementer interrupt in decrementer_check_ov... X-Git-Tag: firefly_0821_release~176^2~5781^2~132 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=3139b0a797d6826519ed98a13623a92f12269613;p=firefly-linux-kernel-4.4.55.git powerpc: Remove the unneeded trigger of decrementer interrupt in decrementer_check_overflow Previously in order to handle the edge sensitive decrementers, we choose to set the decrementer to 1 to trigger a decrementer interrupt when re-enabling interrupts. But with the rework of the lazy EE, we would replay the decrementer interrupt when re-enabling interrupts if a decrementer interrupt occurs with irq soft-disabled. So there is no need to trigger a decrementer interrupt in this case any more. Signed-off-by: Kevin Hao Signed-off-by: Benjamin Herrenschmidt --- diff --git a/arch/powerpc/kernel/irq.c b/arch/powerpc/kernel/irq.c index 5cbcf4d5a808..32fa52e8163f 100644 --- a/arch/powerpc/kernel/irq.c +++ b/arch/powerpc/kernel/irq.c @@ -116,8 +116,6 @@ static inline notrace int decrementer_check_overflow(void) u64 now = get_tb_or_rtc(); u64 *next_tb = &__get_cpu_var(decrementers_next_tb); - if (now >= *next_tb) - set_dec(1); return now >= *next_tb; }