Re: [PATCH 1/1] percpu: fix early calls for spinlock in pcpu_stats

From	Tejun Heo <tj@kernel.org>
Newsgroups	linux.kernel
Subject	Re: [PATCH 1/1] percpu: fix early calls for spinlock in pcpu_stats
Date	2017-06-21 20:00 +0200
Message-ID	<tUS55-VR-27@gated-at.bofh.it> (permalink)
References	<tUehj-Na-11@gated-at.bofh.it> <tUehj-Na-13@gated-at.bofh.it> <tUQFY-8uH-13@gated-at.bofh.it> <tUS55-VR-29@gated-at.bofh.it>
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On Wed, Jun 21, 2017 at 01:52:46PM -0400, Dennis Zhou wrote:
> From 2c06e795162cb306c9707ec51d3e1deadb37f573 Mon Sep 17 00:00:00 2001
> From: Dennis Zhou <dennisz@fb.com>
> Date: Wed, 21 Jun 2017 10:17:09 -0700
> 
> Commit 30a5b5367ef9 ("percpu: expose statistics about percpu memory via
> debugfs") introduces percpu memory statistics. pcpu_stats_chunk_alloc
> takes the spin lock and disables/enables irqs on creation of a chunk. Irqs
> are not enabled when the first chunk is initialized and thus kernels are
> failing to boot with kernel debugging enabled. Fixed by changing _irq to
> _irqsave and _irqrestore.
> 
> Fixes: 30a5b5367ef9 ("percpu: expose statistics about percpu memory via debugfs")
> Signed-off-by: Dennis Zhou <dennisz@fb.com>
> Reported-by: Alexander Levin <alexander.levin@verizon.com>

Applied to percpu/for-4.13.

Thanks.

-- 
tejun

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[PATCH 4/4] percpu: add tracepoint support for percpu memory Dennis Zhou <dennisz@fb.com> - 2017-06-20 01:30 +0200
  Re: [PATCH 4/4] percpu: add tracepoint support for percpu memory "Levin, Alexander (Sasha Levin)" <alexander.levin@verizon.com> - 2017-06-21 18:30 +0200
    Re: [PATCH 1/1] percpu: fix early calls for spinlock in pcpu_stats Tejun Heo <tj@kernel.org> - 2017-06-21 20:00 +0200

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