Re: BUG: scheduling while atomic in acpi_ps_complete_op

From: Alexey Starikovskiy
Date: Fri Aug 21 2009 - 17:24:25 EST


Eric Paris ÐÐÑÐÑ:
On Sat, 2009-08-22 at 00:12 +0400, Alexey Starikovskiy wrote:
Hi,
This should be handled by abe1dfab60e1839d115930286cb421f5a5b193f3.

And yet I'm getting it from linux-next today.

So you are apparently failing the in_atomic_preempt_off() test but
succeeding in your !irqs_disabled() test.

Something isn't right since I'm hitting it hundreds of times on boot.

-Eric

Ok, let's see if replacing irqs_disabled() to in_atomic_preempt_off() helps...

Regards,
Alex.
diff --git a/include/acpi/platform/aclinux.h b/include/acpi/platform/aclinux.h
index fcb8e4b..23b262b 100644
--- a/include/acpi/platform/aclinux.h
+++ b/include/acpi/platform/aclinux.h
@@ -152,7 +152,7 @@ static inline void *acpi_os_acquire_object(acpi_cache_t * cache)

#define ACPI_PREEMPTION_POINT() \
do { \
- if (!irqs_disabled()) \
+ if (!in_atomic_preempt_off()) \
cond_resched(); \
} while (0)