]> git.baikalelectronics.ru Git - kernel.git/commit
drm/i915: Ratelimit request allocation under oom
authorChris Wilson <chris@chris-wilson.co.uk>
Tue, 12 Dec 2017 18:06:52 +0000 (18:06 +0000)
committerChris Wilson <chris@chris-wilson.co.uk>
Wed, 13 Dec 2017 13:17:59 +0000 (13:17 +0000)
commit45817fbb69f17d6e6d75bda35fec8575b6d693c5
tree5e9b017c890aa15f7480982951967eda7e232ba4
parent6ce3dac512620774a9eae2db37613ba972f2b846
drm/i915: Ratelimit request allocation under oom

If we fail to allocate a request, we can reap the outstanding requests
and push them to the request's slab's freelist before trying again. This
forces us to ratelimit malicious clients that tie up all of the system
resources in requests, instead of causing a system-wide oom.

Testcase: igt/gem_shrink/execbuf1
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20171212180652.22061-3-chris@chris-wilson.co.uk
drivers/gpu/drm/i915/i915_gem_request.c