From: Christoph Hellwig <hch@lst.de>
To: Rob Clark <robdclark@gmail.com>
Cc: Robin Murphy <robin.murphy@arm.com>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
linux-arm-msm <linux-arm-msm@vger.kernel.org>,
Rob Clark <robdclark@chromium.org>,
Christoph Hellwig <hch@lst.de>,
Marek Szyprowski <m.szyprowski@samsung.com>,
"open list:DMA MAPPING HELPERS"
<iommu@lists.linux-foundation.org>
Subject: Re: [PATCH] dma-debug: Make things less spammy under memory pressure
Date: Wed, 1 Jun 2022 07:16:21 +0200 [thread overview]
Message-ID: <20220601051621.GA21535@lst.de> (raw)
In-Reply-To: <CAF6AEGuMN23hxe1+PES-F0rgXDnxi48OfbdHKasPGVnbFvQ8rw@mail.gmail.com>
On Tue, May 31, 2022 at 03:19:45PM -0700, Rob Clark wrote:
> um, quite.. tbf that was in the context of a WIP igt test for
> shrinker which was trying to cycle thru ~2x RAM size worth of GEM
> buffers on something like 72 threads. So it could just be threads
> that had gotten past the dma_debug_disabled() check already before
> global_disable was set to true?
>
> I guess this could be pr_err_once() instead, then?
Yes, we could use pr_err_once to reduce the chattyness while still
keeping global_disable to disable all the actual tracking.
prev parent reply other threads:[~2022-06-01 5:16 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-05-31 21:51 [PATCH] dma-debug: Make things less spammy under memory pressure Rob Clark
2022-05-31 22:00 ` Robin Murphy
2022-05-31 22:19 ` Rob Clark
2022-06-01 5:16 ` Christoph Hellwig [this message]
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