diff options
| author | Chris Wilson <chris@chris-wilson.co.uk> | 2019-11-25 10:58:56 +0000 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2019-11-25 13:17:18 +0000 |
| commit | de5825beae9a0ae51f14a92859c6ec916235cd4d (patch) | |
| tree | 1b3c488c44960edddf75b7b7823839b806e0be01 /drivers/gpu/drm/i915/gem/selftests/i915_gem_object_blt.c | |
| parent | da0ef77e1e0ccff703efee82406c629d5c4f4bbb (diff) | |
drm/i915: Serialise with engine-pm around requests on the kernel_context
As the engine->kernel_context is used within the engine-pm barrier, we
have to be careful when emitting requests outside of the barrier, as the
strict timeline locking rules do not apply. Instead, we must ensure the
engine_park() cannot be entered as we build the request, which is
simplest by taking an explicit engine-pm wakeref around the request
construction.
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/20191125105858.1718307-1-chris@chris-wilson.co.uk
Diffstat (limited to 'drivers/gpu/drm/i915/gem/selftests/i915_gem_object_blt.c')
| -rw-r--r-- | drivers/gpu/drm/i915/gem/selftests/i915_gem_object_blt.c | 18 |
1 files changed, 13 insertions, 5 deletions
diff --git a/drivers/gpu/drm/i915/gem/selftests/i915_gem_object_blt.c b/drivers/gpu/drm/i915/gem/selftests/i915_gem_object_blt.c index 675c1a20a2f1..62077fe46715 100644 --- a/drivers/gpu/drm/i915/gem/selftests/i915_gem_object_blt.c +++ b/drivers/gpu/drm/i915/gem/selftests/i915_gem_object_blt.c @@ -41,6 +41,7 @@ static int __perf_fill_blt(struct drm_i915_gem_object *obj) if (!engine) return 0; + intel_engine_pm_get(engine); for (pass = 0; pass < ARRAY_SIZE(t); pass++) { struct intel_context *ce = engine->kernel_context; ktime_t t0, t1; @@ -49,17 +50,20 @@ static int __perf_fill_blt(struct drm_i915_gem_object *obj) err = i915_gem_object_fill_blt(obj, ce, 0); if (err) - return err; + break; err = i915_gem_object_wait(obj, I915_WAIT_ALL, MAX_SCHEDULE_TIMEOUT); if (err) - return err; + break; t1 = ktime_get(); t[pass] = ktime_sub(t1, t0); } + intel_engine_pm_put(engine); + if (err) + return err; sort(t, ARRAY_SIZE(t), sizeof(*t), wrap_ktime_compare, NULL); pr_info("%s: blt %zd KiB fill: %lld MiB/s\n", @@ -109,6 +113,7 @@ static int __perf_copy_blt(struct drm_i915_gem_object *src, struct intel_engine_cs *engine; ktime_t t[5]; int pass; + int err = 0; engine = intel_engine_lookup_user(i915, I915_ENGINE_CLASS_COPY, @@ -116,26 +121,29 @@ static int __perf_copy_blt(struct drm_i915_gem_object *src, if (!engine) return 0; + intel_engine_pm_get(engine); for (pass = 0; pass < ARRAY_SIZE(t); pass++) { struct intel_context *ce = engine->kernel_context; ktime_t t0, t1; - int err; t0 = ktime_get(); err = i915_gem_object_copy_blt(src, dst, ce); if (err) - return err; + break; err = i915_gem_object_wait(dst, I915_WAIT_ALL, MAX_SCHEDULE_TIMEOUT); if (err) - return err; + break; t1 = ktime_get(); t[pass] = ktime_sub(t1, t0); } + intel_engine_pm_put(engine); + if (err) + return err; sort(t, ARRAY_SIZE(t), sizeof(*t), wrap_ktime_compare, NULL); pr_info("%s: blt %zd KiB copy: %lld MiB/s\n", |