linux-kernel - Re: [PATCH 3/4] OOM, PM: OOM killed task shouldn't escape PM suspend

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Message-ID: <20141026184926.GB16309@amd>
Date:	Sun, 26 Oct 2014 19:49:26 +0100
From:	Pavel Machek <pavel@....cz>
To:	Michal Hocko <mhocko@...e.cz>
Cc:	"Rafael J. Wysocki" <rjw@...ysocki.net>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Cong Wang <xiyou.wangcong@...il.com>,
	David Rientjes <rientjes@...gle.com>,
	Tejun Heo <tj@...nel.org>, Oleg Nesterov <oleg@...hat.com>,
	LKML <linux-kernel@...r.kernel.org>, linux-mm@...ck.org,
	Linux PM list <linux-pm@...r.kernel.org>
Subject: Re: [PATCH 3/4] OOM, PM: OOM killed task shouldn't escape PM suspend

Hi!
>  
> +/*
> + * Number of OOM killer invocations (including memcg OOM killer).
> + * Primarily used by PM freezer to check for potential races with
> + * OOM killed frozen task.
> + */
> +static atomic_t oom_kills = ATOMIC_INIT(0);
> +
> +int oom_kills_count(void)
> +{
> +	return atomic_read(&oom_kills);
> +}
> +
> +void note_oom_kill(void)
> +{
> +	atomic_inc(&oom_kills);
> +}
> +

Do we need the extra abstraction here? Maybe oom_kills should be
exported directly?
									Pavel

-- 
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