From: Andrew Morton <akpm@linux-foundation.org>
To: Anshuman Khandual <khandual@linux.vnet.ibm.com>
Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, mhocko@suse.com
Subject: Re: [PATCH V3] mm/mprotect: Add a cond_resched() inside change_pmd_range()
Date: Thu, 14 Dec 2017 12:40:35 -0800 [thread overview]
Message-ID: <20171214124035.e77706f0a314f2082a2d1b7c@linux-foundation.org> (raw)
In-Reply-To: <20171214140551.5794-1-khandual@linux.vnet.ibm.com>
On Thu, 14 Dec 2017 19:35:51 +0530 Anshuman Khandual <khandual@linux.vnet.ibm.com> wrote:
> While testing on a large CPU system, detected the following RCU
> stall many times over the span of the workload. This problem
> is solved by adding a cond_resched() in the change_pmd_range()
> function.
>
> [ 850.962530] INFO: rcu_sched detected stalls on CPUs/tasks:
That's a bit rude. I think I'll add a cc:stable to this one.
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prev parent reply other threads:[~2017-12-14 20:40 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-12-14 14:05 Anshuman Khandual
2017-12-14 14:16 ` Michal Hocko
2017-12-14 20:40 ` Andrew Morton [this message]
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