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| author | Chris Wilson <chris@chris-wilson.co.uk> | 2020-08-01 17:02:25 +0100 |
|---|---|---|
| committer | Joonas Lahtinen <joonas.lahtinen@linux.intel.com> | 2020-09-07 14:24:29 +0300 |
| commit | e23005604b2f815720b00c2b36c9597fd43923cf (patch) | |
| tree | 8eb102d6efe9bc955e280eae832d180ee938eca7 /kernel/kheaders.c | |
| parent | 3f7dc1071665c38a195e24d28d8418b68c441584 (diff) | |
drm/i915/gt: Hold context/request reference while breadcrumbs are active
Currently we hold no actual reference to the request nor context while
they are attached to a breadcrumb. To avoid freeing the request/context
too early, we serialise with cancel-breadcrumbs by taking the irq
spinlock in i915_request_retire(). The alternative is to take a
reference for a new breadcrumb and release it upon signaling; removing
the more frequently hit contention point in i915_request_retire().
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200801160225.6814-2-chris@chris-wilson.co.uk
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
[Joonas: Rebased and reordered into drm-intel-gt-next branch]
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Diffstat (limited to 'kernel/kheaders.c')
0 files changed, 0 insertions, 0 deletions