From: Chris Wilson <chris@chris-wilson.co.uk>
To: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Cc: intel-gfx@lists.freedesktop.org, miku@iki.fi
Subject: Re: [PATCH 2/4] drm/i915: Let hangcheck score decay faster than loop increment
Date: Mon, 30 Nov 2015 17:18:43 +0000 [thread overview]
Message-ID: <20151130171843.GE22663@nuc-i3427.alporthouse.com> (raw)
In-Reply-To: <1448902389-12477-2-git-send-email-mika.kuoppala@intel.com>
On Mon, Nov 30, 2015 at 06:53:07PM +0200, Mika Kuoppala wrote:
> We decay hangcheck score, instead of setting it to zero,
> when seqno moves forward. This was added as mechanism to
> detect batches full of invalid waits.
And slow DoS. So no.
-Chris
--
Chris Wilson, Intel Open Source Technology Centre
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next prev parent reply other threads:[~2015-11-30 17:18 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-11-30 16:53 [PATCH 1/4] drm/i915: Teach hangcheck about long operations on rings Mika Kuoppala
2015-11-30 16:53 ` [PATCH 2/4] drm/i915: Let hangcheck score decay faster than loop increment Mika Kuoppala
2015-11-30 17:18 ` Chris Wilson [this message]
2015-12-01 8:55 ` Daniel Vetter
2015-12-01 12:09 ` Mika Kuoppala
2015-11-30 16:53 ` [PATCH 3/4] drm/i915: Clear hangcheck score if engine is idle Mika Kuoppala
2015-11-30 17:10 ` Chris Wilson
2015-11-30 16:53 ` [PATCH 4/4] drm/i915: Detect small loops in hangcheck Mika Kuoppala
2015-11-30 17:11 ` [PATCH 1/4] drm/i915: Teach hangcheck about long operations on rings Chris Wilson
2015-11-30 18:04 ` Dave Gordon
2015-11-30 18:46 ` Chris Wilson
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