On Fri, 15 Jul 2016 14:08:37 +0200
Sebastian Andrzej Siewior <[email protected]> wrote:
> + Steven
>
> * Arnd Bergmann | 2016-07-15 09:42:40 [+0200]:
>
> >On Friday, July 15, 2016 5:55:39 AM CEST Build bot for Mark Brown wrote:
> >>
> >> arm64-allnoconfig
> >> /home/broonie/build/linux-stable-rt/include/asm-generic/preempt.h:10:9:
> >> error: implicit declaration of function 'READ_ONCE'
> >> [-Werror=implicit-function-declaration]
> >>
> >> arm64-allmodconfig
> >> /home/broonie/build/linux-stable-rt/include/asm-generic/preempt.h:10:9:
> >> error: implicit declaration of function 'READ_ONCE'
> >> [-Werror=implicit-function-declaration]
> >>
> >> arm-multi_v7_defconfig
> >> /home/broonie/build/linux-stable-rt/include/asm-generic/preempt.h:10:9:
> >> error: implicit declaration of function 'READ_ONCE'
> >> [-Werror=implicit-function-declaration]
> >>
> >> arm-allmodconfig
> >> /home/broonie/build/linux-stable-rt/include/asm-generic/preempt.h:10:9:
> >> error: implicit declaration of function 'READ_ONCE'
> >> [-Werror=implicit-function-declaration]
> >>
> >> arm-allnoconfig
> >> /home/broonie/build/linux-stable-rt/include/asm-generic/preempt.h:10:9:
> >> error: implicit declaration of function 'READ_ONCE'
> >> [-Werror=implicit-function-declaration]
> >>
> >> arm64-defconfig
> >> /home/broonie/build/linux-stable-rt/include/asm-generic/preempt.h:10:9:
> >> error: implicit declaration of function 'READ_ONCE'
> >> [-Werror=implicit-function-declaration]
> >
> >These all started failing yesterday with v3.14.72-rt76, before it was
> >
> > v3.14.72-rt75 build: 0 failures 113 warnings (v3.14.72-rt75)
> >
> > Arnd
>
Arnd,
Does this fix the issue?
-- Steve
diff --git a/include/asm-generic/preempt.h b/include/asm-generic/preempt.h
index 65759d8b0b46..25c09df2c046 100644
--- a/include/asm-generic/preempt.h
+++ b/include/asm-generic/preempt.h
@@ -7,7 +7,7 @@
static __always_inline int preempt_count(void)
{
- return READ_ONCE(current_thread_info()->preempt_count);
+ return ACCESS_ONCE(current_thread_info()->preempt_count);
}
static __always_inline volatile int *preempt_count_ptr(void)
