* [PATCH] kernel/cpu: Move cpuhp_is_atomic_state() into #ifdef CONFIG_SMP
@ 2018-03-16 6:38 Dou Liyang
2018-03-16 7:59 ` Thomas Gleixner
0 siblings, 1 reply; 3+ messages in thread
From: Dou Liyang @ 2018-03-16 6:38 UTC (permalink / raw)
To: linux-kernel, sfr; +Cc: tglx, mingo, peterz, jiangshanlai, Dou Liyang
Commit 17a2f1ced028 ("cpu/hotplug: Merge cpuhp_bp_states and cpuhp_ap_states")
removed the last use of cpuhp_is_atomic_state() in common case, that caused
Kernel produced a warning:
'cpuhp_is_ap_state' defined but not used
So, Move it into #ifdef CONFIG_SMP
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Dou Liyang <douly.fnst@cn.fujitsu.com>
---
kernel/cpu.c | 18 +++++++++---------
1 file changed, 9 insertions(+), 9 deletions(-)
diff --git a/kernel/cpu.c b/kernel/cpu.c
index a1860d42aacf..db7ec7572348 100644
--- a/kernel/cpu.c
+++ b/kernel/cpu.c
@@ -126,15 +126,6 @@ struct cpuhp_step {
static DEFINE_MUTEX(cpuhp_state_mutex);
static struct cpuhp_step cpuhp_hp_states[];
-static bool cpuhp_is_ap_state(enum cpuhp_state state)
-{
- /*
- * The extra check for CPUHP_TEARDOWN_CPU is only for documentation
- * purposes as that state is handled explicitly in cpu_down.
- */
- return state > CPUHP_BRINGUP_CPU && state != CPUHP_TEARDOWN_CPU;
-}
-
static struct cpuhp_step *cpuhp_get_step(enum cpuhp_state state)
{
return cpuhp_hp_states + state;
@@ -247,6 +238,15 @@ static inline void complete_ap_thread(struct cpuhp_cpu_state *st, bool bringup)
complete(done);
}
+static bool cpuhp_is_ap_state(enum cpuhp_state state)
+{
+ /*
+ * The extra check for CPUHP_TEARDOWN_CPU is only for documentation
+ * purposes as that state is handled explicitly in cpu_down.
+ */
+ return state > CPUHP_BRINGUP_CPU && state != CPUHP_TEARDOWN_CPU;
+}
+
/*
* The former STARTING/DYING states, ran with IRQs disabled and must not fail.
*/
--
2.14.3
^ permalink raw reply related [flat|nested] 3+ messages in thread
* Re: [PATCH] kernel/cpu: Move cpuhp_is_atomic_state() into #ifdef CONFIG_SMP
2018-03-16 6:38 [PATCH] kernel/cpu: Move cpuhp_is_atomic_state() into #ifdef CONFIG_SMP Dou Liyang
@ 2018-03-16 7:59 ` Thomas Gleixner
2018-03-16 8:27 ` Dou Liyang
0 siblings, 1 reply; 3+ messages in thread
From: Thomas Gleixner @ 2018-03-16 7:59 UTC (permalink / raw)
To: Dou Liyang; +Cc: linux-kernel, sfr, mingo, peterz, jiangshanlai
On Fri, 16 Mar 2018, Dou Liyang wrote:
> Commit 17a2f1ced028 ("cpu/hotplug: Merge cpuhp_bp_states and cpuhp_ap_states")
> removed the last use of cpuhp_is_atomic_state() in common case, that caused
> Kernel produced a warning:
>
> 'cpuhp_is_ap_state' defined but not used
>
> So, Move it into #ifdef CONFIG_SMP
Thanks for the patch, but a fix is already queued in the smp/hotplug
branch. It just did not make it into the for-next branch yet,
Thanks,
tglx
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [PATCH] kernel/cpu: Move cpuhp_is_atomic_state() into #ifdef CONFIG_SMP
2018-03-16 7:59 ` Thomas Gleixner
@ 2018-03-16 8:27 ` Dou Liyang
0 siblings, 0 replies; 3+ messages in thread
From: Dou Liyang @ 2018-03-16 8:27 UTC (permalink / raw)
To: Thomas Gleixner; +Cc: linux-kernel, sfr, mingo, peterz, jiangshanlai
At 03/16/2018 03:59 PM, Thomas Gleixner wrote:
> On Fri, 16 Mar 2018, Dou Liyang wrote:
>
>> Commit 17a2f1ced028 ("cpu/hotplug: Merge cpuhp_bp_states and cpuhp_ap_states")
>> removed the last use of cpuhp_is_atomic_state() in common case, that caused
>> Kernel produced a warning:
>>
>> 'cpuhp_is_ap_state' defined but not used
>>
>> So, Move it into #ifdef CONFIG_SMP
>
> Thanks for the patch, but a fix is already queued in the smp/hotplug
> branch. It just did not make it into the for-next branch yet,
>
Oops, yes, let's ignore this patch.
Thanks,
dou
> Thanks,
>
> tglx
>
>
>
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2018-03-16 8:27 UTC | newest]
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2018-03-16 6:38 [PATCH] kernel/cpu: Move cpuhp_is_atomic_state() into #ifdef CONFIG_SMP Dou Liyang
2018-03-16 7:59 ` Thomas Gleixner
2018-03-16 8:27 ` Dou Liyang
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