Chris Wilson <[email protected]> writes: > live_preempt_hang's use of hang injection has been superseded by > live_preempt_reset's use of an non-preemptable spinner. The latter does > not require intrusive hacks into the code. > > Signed-off-by: Chris Wilson <[email protected]>
Good riddance, Reviewed-by: Mika Kuoppala <[email protected]> > --- > drivers/gpu/drm/i915/gt/intel_engine.h | 20 --- > drivers/gpu/drm/i915/gt/intel_engine_types.h | 1 - > drivers/gpu/drm/i915/gt/intel_lrc.c | 8 +- > drivers/gpu/drm/i915/gt/selftest_lrc.c | 122 ------------------- > 4 files changed, 4 insertions(+), 147 deletions(-) > > diff --git a/drivers/gpu/drm/i915/gt/intel_engine.h > b/drivers/gpu/drm/i915/gt/intel_engine.h > index b36ec1fddc3d..29c8c03c5caa 100644 > --- a/drivers/gpu/drm/i915/gt/intel_engine.h > +++ b/drivers/gpu/drm/i915/gt/intel_engine.h > @@ -305,26 +305,6 @@ intel_engine_find_active_request(struct intel_engine_cs > *engine); > > u32 intel_engine_context_size(struct intel_gt *gt, u8 class); > > -#if IS_ENABLED(CONFIG_DRM_I915_SELFTEST) > - > -static inline bool inject_preempt_hang(struct intel_engine_execlists > *execlists) > -{ > - if (!execlists->preempt_hang.inject_hang) > - return false; > - > - complete(&execlists->preempt_hang.completion); > - return true; > -} > - > -#else > - > -static inline bool inject_preempt_hang(struct intel_engine_execlists > *execlists) > -{ > - return false; > -} > - > -#endif > - > void intel_engine_init_active(struct intel_engine_cs *engine, > unsigned int subclass); > #define ENGINE_PHYSICAL 0 > diff --git a/drivers/gpu/drm/i915/gt/intel_engine_types.h > b/drivers/gpu/drm/i915/gt/intel_engine_types.h > index 45e36d963ea7..b23366a81048 100644 > --- a/drivers/gpu/drm/i915/gt/intel_engine_types.h > +++ b/drivers/gpu/drm/i915/gt/intel_engine_types.h > @@ -127,7 +127,6 @@ DECLARE_EWMA(_engine_latency, 6, 4) > struct st_preempt_hang { > struct completion completion; > unsigned int count; > - bool inject_hang; > }; > > /** > diff --git a/drivers/gpu/drm/i915/gt/intel_lrc.c > b/drivers/gpu/drm/i915/gt/intel_lrc.c > index 230470c58ec9..929be03bbe7e 100644 > --- a/drivers/gpu/drm/i915/gt/intel_lrc.c > +++ b/drivers/gpu/drm/i915/gt/intel_lrc.c > @@ -2296,19 +2296,19 @@ static void process_csb(struct intel_engine_cs > *engine) > if (promote) { > struct i915_request * const *old = execlists->active; > > + GEM_BUG_ON(!assert_pending_valid(execlists, "promote")); > + > + ring_set_paused(engine, 0); > + > /* Point active to the new ELSP; prevent overwriting */ > WRITE_ONCE(execlists->active, execlists->pending); > > - if (!inject_preempt_hang(execlists)) > - ring_set_paused(engine, 0); > - > /* cancel old inflight, prepare for switch */ > trace_ports(execlists, "preempted", old); > while (*old) > execlists_schedule_out(*old++); > > /* switch pending to inflight */ > - GEM_BUG_ON(!assert_pending_valid(execlists, "promote")); > WRITE_ONCE(execlists->active, > memcpy(execlists->inflight, > execlists->pending, > diff --git a/drivers/gpu/drm/i915/gt/selftest_lrc.c > b/drivers/gpu/drm/i915/gt/selftest_lrc.c > index 79b9f7d092e4..7ef68500b2bd 100644 > --- a/drivers/gpu/drm/i915/gt/selftest_lrc.c > +++ b/drivers/gpu/drm/i915/gt/selftest_lrc.c > @@ -2431,127 +2431,6 @@ static int live_preempt_gang(void *arg) > return 0; > } > > -static int live_preempt_hang(void *arg) > -{ > - struct intel_gt *gt = arg; > - struct i915_gem_context *ctx_hi, *ctx_lo; > - struct igt_spinner spin_hi, spin_lo; > - struct intel_engine_cs *engine; > - enum intel_engine_id id; > - int err = -ENOMEM; > - > - if (!HAS_LOGICAL_RING_PREEMPTION(gt->i915)) > - return 0; > - > - if (!intel_has_reset_engine(gt)) > - return 0; > - > - if (igt_spinner_init(&spin_hi, gt)) > - return -ENOMEM; > - > - if (igt_spinner_init(&spin_lo, gt)) > - goto err_spin_hi; > - > - ctx_hi = kernel_context(gt->i915); > - if (!ctx_hi) > - goto err_spin_lo; > - ctx_hi->sched.priority = > - I915_USER_PRIORITY(I915_CONTEXT_MAX_USER_PRIORITY); > - > - ctx_lo = kernel_context(gt->i915); > - if (!ctx_lo) > - goto err_ctx_hi; > - ctx_lo->sched.priority = > - I915_USER_PRIORITY(I915_CONTEXT_MIN_USER_PRIORITY); > - > - for_each_engine(engine, gt, id) { > - unsigned long heartbeat; > - struct i915_request *rq; > - > - if (!intel_engine_has_preemption(engine)) > - continue; > - > - engine_heartbeat_disable(engine, &heartbeat); > - > - rq = spinner_create_request(&spin_lo, ctx_lo, engine, > - MI_ARB_CHECK); > - if (IS_ERR(rq)) { > - err = PTR_ERR(rq); > - engine_heartbeat_enable(engine, heartbeat); > - goto err_ctx_lo; > - } > - > - i915_request_add(rq); > - if (!igt_wait_for_spinner(&spin_lo, rq)) { > - GEM_TRACE("lo spinner failed to start\n"); > - GEM_TRACE_DUMP(); > - intel_gt_set_wedged(gt); > - err = -EIO; > - engine_heartbeat_enable(engine, heartbeat); > - goto err_ctx_lo; > - } > - > - rq = spinner_create_request(&spin_hi, ctx_hi, engine, > - MI_ARB_CHECK); > - if (IS_ERR(rq)) { > - igt_spinner_end(&spin_lo); > - engine_heartbeat_enable(engine, heartbeat); > - err = PTR_ERR(rq); > - goto err_ctx_lo; > - } > - > - init_completion(&engine->execlists.preempt_hang.completion); > - engine->execlists.preempt_hang.inject_hang = true; > - > - i915_request_add(rq); > - > - if > (!wait_for_completion_timeout(&engine->execlists.preempt_hang.completion, > - HZ / 10)) { > - pr_err("Preemption did not occur within timeout!"); > - GEM_TRACE_DUMP(); > - intel_gt_set_wedged(gt); > - engine_heartbeat_enable(engine, heartbeat); > - err = -EIO; > - goto err_ctx_lo; > - } > - > - set_bit(I915_RESET_ENGINE + id, >->reset.flags); > - intel_engine_reset(engine, NULL); > - clear_bit(I915_RESET_ENGINE + id, >->reset.flags); > - > - engine->execlists.preempt_hang.inject_hang = false; > - > - if (!igt_wait_for_spinner(&spin_hi, rq)) { > - GEM_TRACE("hi spinner failed to start\n"); > - GEM_TRACE_DUMP(); > - intel_gt_set_wedged(gt); > - engine_heartbeat_enable(engine, heartbeat); > - err = -EIO; > - goto err_ctx_lo; > - } > - > - igt_spinner_end(&spin_hi); > - igt_spinner_end(&spin_lo); > - engine_heartbeat_enable(engine, heartbeat); > - > - if (igt_flush_test(gt->i915)) { > - err = -EIO; > - goto err_ctx_lo; > - } > - } > - > - err = 0; > -err_ctx_lo: > - kernel_context_close(ctx_lo); > -err_ctx_hi: > - kernel_context_close(ctx_hi); > -err_spin_lo: > - igt_spinner_fini(&spin_lo); > -err_spin_hi: > - igt_spinner_fini(&spin_hi); > - return err; > -} > - > static int live_preempt_timeout(void *arg) > { > struct intel_gt *gt = arg; > @@ -3750,7 +3629,6 @@ int intel_execlists_live_selftests(struct > drm_i915_private *i915) > SUBTEST(live_suppress_wait_preempt), > SUBTEST(live_chain_preempt), > SUBTEST(live_preempt_gang), > - SUBTEST(live_preempt_hang), > SUBTEST(live_preempt_timeout), > SUBTEST(live_preempt_smoke), > SUBTEST(live_virtual_engine), > -- > 2.25.0 > > _______________________________________________ > Intel-gfx mailing list > [email protected] > https://lists.freedesktop.org/mailman/listinfo/intel-gfx _______________________________________________ Intel-gfx mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/intel-gfx
