linux-kernel - Re: [PATCH 6/7] psi: pressure stall information for CPU, memory, and IO

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Date:   Tue, 8 May 2018 10:05:33 -0400
From:   Johannes Weiner <hannes@...xchg.org>
To:     kbuild test robot <lkp@...el.com>
Cc:     kbuild-all@...org, linux-kernel@...r.kernel.org,
        linux-mm@...ck.org, linux-block@...r.kernel.org,
        cgroups@...r.kernel.org, Ingo Molnar <mingo@...hat.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Andrew Morton <akpm@...uxfoundation.org>,
        Tejun Heo <tj@...nel.org>,
        Balbir Singh <bsingharora@...il.com>,
        Mike Galbraith <efault@....de>,
        Oliver Yang <yangoliver@...com>,
        Shakeel Butt <shakeelb@...gle.com>,
        xxx xxx <x.qendo@...il.com>,
        Taras Kondratiuk <takondra@...co.com>,
        Daniel Walker <danielwa@...co.com>,
        Vinayak Menon <vinmenon@...eaurora.org>,
        Ruslan Ruslichenko <rruslich@...co.com>, kernel-team@...com
Subject: Re: [PATCH 6/7] psi: pressure stall information for CPU, memory, and
 IO

On Tue, May 08, 2018 at 11:04:09AM +0800, kbuild test robot wrote:
>    118	#else /* CONFIG_PSI */
>    119	static inline void psi_enqueue(struct task_struct *p, u64 now)
>    120	{
>    121	}
>    122	static inline void psi_dequeue(struct task_struct *p, u64 now)
>    123	{
>    124	}
>    125	static inline void psi_ttwu_dequeue(struct task_struct *p) {}
>  > 126	{
>    127	}

Stupid last-minute cleanup reshuffling. v2 will have:

diff --git a/kernel/sched/stats.h b/kernel/sched/stats.h
index cb4a68bcf37a..ff6256b3d216 100644
--- a/kernel/sched/stats.h
+++ b/kernel/sched/stats.h
@@ -122,7 +122,7 @@ static inline void psi_enqueue(struct task_struct *p, u64 now)
 static inline void psi_dequeue(struct task_struct *p, u64 now)
 {
 }
-static inline void psi_ttwu_dequeue(struct task_struct *p) {}
+static inline void psi_ttwu_dequeue(struct task_struct *p)
 {
 }
 #endif /* CONFIG_PSI */