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 <haoke...@gmail.com>
---
arch/powerpc/kernel/irq.c | 2 --
1 file changed, 2 deletions(-)
diff --git a/arch/powerpc/kernel/irq.c b/arch/powerpc/kernel/irq.c
index 4f97fe3..1af5744 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;
}
--
1.8.1.4
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