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| author | Kevin Hao <haokexin@gmail.com> | 2013-04-17 11:50:35 +0200 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2013-06-20 08:55:10 +0200 |
| commit | 3139b0a797d6826519ed98a13623a92f12269613 (patch) | |
| tree | 716b5f35913de377cd2dd56af6c59c9bc55b76db | |
| parent | powerpc/mm/nohash: Ignore NULL stale_map entries (diff) | |
| download | linux-3139b0a797d6826519ed98a13623a92f12269613.tar.xz linux-3139b0a797d6826519ed98a13623a92f12269613.zip | |
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 <haokexin@gmail.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
| -rw-r--r-- | arch/powerpc/kernel/irq.c | 2 |
1 files changed, 0 insertions, 2 deletions
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; } |