Chris Wilson 9107e9d227 drm/i915: Only slightly increment hangcheck score if we succesfully kick a ring ... After kicking a ring, it should be free to make progress again and so should not be accused of being stuck until hangcheck fires once more. In order to catch a denial-of-service within a batch or across multiple batches, we still do increment the hangcheck score - just not as severely so that it takes multiple kicks to fail. This should address part of Ben's justified criticism of commit 05407ff889 Author: Mika Kuoppala <mika.kuoppala@linux.intel.com> Date: Thu May 30 09:04:29 2013 +0300 drm/i915: detect hang using per ring hangcheck_score "There's also another corner case on the kick. If the seqno = 2 (though not stuck), and on the 3rd hangcheck, the ring is stuck, and we try to kick it... we don't actually try to find out if the kick helped." v2: Make sure we catch DoS attempts with batches full of invalid WAITs. v3: Preserve the ability to detect loops by always charging the ring if it is busy on the same request. v4: Make sure we queue another check if on a new batch References: https://bugs.freedesktop.org/show_bug.cgi?id=65394 Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com> Cc: Ben Widawsky <ben@bwidawsk.net> Reviewed-by: Mika Kuoppala <mika.kuoppala@intel.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>		2013-06-11 11:44:00 +02:00
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drm	drm/i915: Only slightly increment hangcheck score if we succesfully kick a ring	2013-06-11 11:44:00 +02:00
host1x	drivers/gpu/host1x/drm: don't check resource with devm_ioremap_resource	2013-05-18 11:55:30 +02:00
vga	fbcon: fix locking harder	2013-02-08 12:02:43 +10:00
Makefile	gpu: host1x: Add host1x driver	2013-04-22 12:32:40 +02:00