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author | Matthew Brost <matthew.brost@intel.com> | 2021-07-26 17:23:40 -0700 |
---|---|---|
committer | John Harrison <John.C.Harrison@Intel.com> | 2021-07-27 17:32:14 -0700 |
commit | 62eaf0ae217d45e917fd9ca6296205117a69b6d0 (patch) | |
tree | 4bc87b1505240028622914adf1401167ddaa5bac /drivers/gpu/drm/i915/gt/intel_ring_submission.c | |
parent | drm/i915/guc: Implement banned contexts for GuC submission (diff) | |
download | linux-dev-62eaf0ae217d45e917fd9ca6296205117a69b6d0.tar.xz linux-dev-62eaf0ae217d45e917fd9ca6296205117a69b6d0.zip |
drm/i915/guc: Support request cancellation
This adds GuC backend support for i915_request_cancel(), which in turn
makes CONFIG_DRM_I915_REQUEST_TIMEOUT work.
This implementation makes use of fence while there are likely simplier
options. A fence was chosen because of another feature coming soon
which requires a user to block on a context until scheduling is
disabled. In that case we return the fence to the user and the user can
wait on that fence.
v2:
(Daniele)
- A comment about locking the blocked incr / decr
- A comments about the use of the fence
- Update commit message explaining why fence
- Delete redundant check blocked count in unblock function
- Ring buffer implementation
- Comment about blocked in submission path
- Shorter rpm path
v3:
(Checkpatch)
- Fix typos in commit message
(Daniel)
- Rework to simplier locking structure in guc_context_block / unblock
Signed-off-by: Matthew Brost <matthew.brost@intel.com>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Signed-off-by: John Harrison <John.C.Harrison@Intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210727002348.97202-26-matthew.brost@intel.com
Diffstat (limited to 'drivers/gpu/drm/i915/gt/intel_ring_submission.c')
-rw-r--r-- | drivers/gpu/drm/i915/gt/intel_ring_submission.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/gt/intel_ring_submission.c b/drivers/gpu/drm/i915/gt/intel_ring_submission.c index 05bb9f449df1..2958e2fae380 100644 --- a/drivers/gpu/drm/i915/gt/intel_ring_submission.c +++ b/drivers/gpu/drm/i915/gt/intel_ring_submission.c @@ -16,6 +16,7 @@ #include "intel_reset.h" #include "intel_ring.h" #include "shmem_utils.h" +#include "intel_engine_heartbeat.h" /* Rough estimate of the typical request size, performing a flush, * set-context and then emitting the batch. @@ -604,9 +605,24 @@ static void ring_context_ban(struct intel_context *ce, } } +static void ring_context_cancel_request(struct intel_context *ce, + struct i915_request *rq) +{ + struct intel_engine_cs *engine = NULL; + + i915_request_active_engine(rq, &engine); + + if (engine && intel_engine_pulse(engine)) + intel_gt_handle_error(engine->gt, engine->mask, 0, + "request cancellation by %s", + current->comm); +} + static const struct intel_context_ops ring_context_ops = { .alloc = ring_context_alloc, + .cancel_request = ring_context_cancel_request, + .ban = ring_context_ban, .pre_pin = ring_context_pre_pin, |