* [PATCH 1/1] arm64: preempt: Add NEED_RESCHED to the preempt_count()
@ 2022-09-05 14:18 wonder_rock
2022-09-05 15:50 ` wonder_rock
0 siblings, 1 reply; 3+ messages in thread
From: wonder_rock @ 2022-09-05 14:18 UTC (permalink / raw)
To: catalin.marinas, will
Cc: frederic, ardb, wonder_rock, mark.rutland, linux-arm-kernel,
linux-kernel
From: Deyan Wang <wonder_rock@126.com>
preempt_count() will be checked in preempt_schedule_irq(),
we need check if NEED_RESCHED in preempt point.
Signed-off-by: Deyan Wang <wonder_rock@126.com>
---
arch/arm64/include/asm/preempt.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/arm64/include/asm/preempt.h b/arch/arm64/include/asm/preempt.h
index 0159b625cc7f..083b0fd3c52a 100644
--- a/arch/arm64/include/asm/preempt.h
+++ b/arch/arm64/include/asm/preempt.h
@@ -10,7 +10,7 @@
static inline int preempt_count(void)
{
- return READ_ONCE(current_thread_info()->preempt.count);
+ return READ_ONCE(current_thread_info()->preempt_count);
}
static inline void preempt_count_set(u64 pc)
--
2.25.1
^ permalink raw reply related [flat|nested] 3+ messages in thread
* Re: [PATCH 1/1] arm64: preempt: Add NEED_RESCHED to the preempt_count()
2022-09-05 14:18 [PATCH 1/1] arm64: preempt: Add NEED_RESCHED to the preempt_count() wonder_rock
@ 2022-09-05 15:50 ` wonder_rock
2022-09-06 12:11 ` Will Deacon
0 siblings, 1 reply; 3+ messages in thread
From: wonder_rock @ 2022-09-05 15:50 UTC (permalink / raw)
To: catalin.marinas, will
Cc: ardb, frederic, linux-arm-kernel, linux-kernel, mark.rutland
I know it is wrong. I just want to say I think preempt_count() need include NEED_RESCHED
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [PATCH 1/1] arm64: preempt: Add NEED_RESCHED to the preempt_count()
2022-09-05 15:50 ` wonder_rock
@ 2022-09-06 12:11 ` Will Deacon
0 siblings, 0 replies; 3+ messages in thread
From: Will Deacon @ 2022-09-06 12:11 UTC (permalink / raw)
To: wonder_rock
Cc: catalin.marinas, ardb, frederic, linux-arm-kernel, linux-kernel,
mark.rutland
On Mon, Sep 05, 2022 at 11:50:13PM +0800, wonder_rock@126.com wrote:
> I know it is wrong. I just want to say I think preempt_count() need include NEED_RESCHED
Won't that break everybody expecting a count? I'm not sure what you're
asking from us here.
Will
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2022-09-06 12:11 UTC | newest]
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2022-09-05 14:18 [PATCH 1/1] arm64: preempt: Add NEED_RESCHED to the preempt_count() wonder_rock
2022-09-05 15:50 ` wonder_rock
2022-09-06 12:11 ` Will Deacon
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