From 8ec21a7c4b52165211b47932c665ab2e9ca488ee Mon Sep 17 00:00:00 2001 From: Chris Wilson Date: Mon, 5 Feb 2018 15:24:29 +0000 Subject: [PATCH] drm/i915/selftests: Use a sacrificial context for hang testing Avoid injecting hangs in to the i915->kernel_context in case the GPU reset leaves corruption in the context image in its wake (leading to continual failures and system hangs after the selftests are ostensibly complete). Use a sacrificial kernel_context instead. v2: Closing a context is tricky; export a function (for selftests) from i915_gem_context.c to get it right. Signed-off-by: Chris Wilson Cc: Mika Kuoppala Cc: Michel Thierry Reviewed-by: Mika Kuoppala Link: https://patchwork.freedesktop.org/patch/msgid/20180205152431.12163-2-chris@chris-wilson.co.uk --- .../gpu/drm/i915/selftests/intel_hangcheck.c | 39 +++++++++++-------- drivers/gpu/drm/i915/selftests/mock_context.c | 11 ++++++ drivers/gpu/drm/i915/selftests/mock_context.h | 3 ++ 3 files changed, 36 insertions(+), 17 deletions(-) diff --git a/drivers/gpu/drm/i915/selftests/intel_hangcheck.c b/drivers/gpu/drm/i915/selftests/intel_hangcheck.c index a42c539c1efe..d1d2c2456f69 100644 --- a/drivers/gpu/drm/i915/selftests/intel_hangcheck.c +++ b/drivers/gpu/drm/i915/selftests/intel_hangcheck.c @@ -33,6 +33,7 @@ struct hang { struct drm_i915_private *i915; struct drm_i915_gem_object *hws; struct drm_i915_gem_object *obj; + struct i915_gem_context *ctx; u32 *seqno; u32 *batch; }; @@ -45,9 +46,15 @@ static int hang_init(struct hang *h, struct drm_i915_private *i915) memset(h, 0, sizeof(*h)); h->i915 = i915; + h->ctx = kernel_context(i915); + if (IS_ERR(h->ctx)) + return PTR_ERR(h->ctx); + h->hws = i915_gem_object_create_internal(i915, PAGE_SIZE); - if (IS_ERR(h->hws)) - return PTR_ERR(h->hws); + if (IS_ERR(h->hws)) { + err = PTR_ERR(h->hws); + goto err_ctx; + } h->obj = i915_gem_object_create_internal(i915, PAGE_SIZE); if (IS_ERR(h->obj)) { @@ -79,6 +86,8 @@ err_obj: i915_gem_object_put(h->obj); err_hws: i915_gem_object_put(h->hws); +err_ctx: + kernel_context_close(h->ctx); return err; } @@ -196,9 +205,7 @@ unpin_vma: } static struct drm_i915_gem_request * -hang_create_request(struct hang *h, - struct intel_engine_cs *engine, - struct i915_gem_context *ctx) +hang_create_request(struct hang *h, struct intel_engine_cs *engine) { struct drm_i915_gem_request *rq; int err; @@ -225,7 +232,7 @@ hang_create_request(struct hang *h, h->batch = vaddr; } - rq = i915_gem_request_alloc(engine, ctx); + rq = i915_gem_request_alloc(engine, h->ctx); if (IS_ERR(rq)) return rq; @@ -307,6 +314,8 @@ static void hang_fini(struct hang *h) i915_gem_object_unpin_map(h->hws); i915_gem_object_put(h->hws); + kernel_context_close(h->ctx); + flush_test(h->i915, I915_WAIT_LOCKED); } @@ -342,7 +351,7 @@ static int igt_hang_sanitycheck(void *arg) if (!intel_engine_can_store_dword(engine)) continue; - rq = hang_create_request(&h, engine, i915->kernel_context); + rq = hang_create_request(&h, engine); if (IS_ERR(rq)) { err = PTR_ERR(rq); pr_err("Failed to create request for %s, err=%d\n", @@ -479,8 +488,7 @@ static int __igt_reset_engine(struct drm_i915_private *i915, bool active) struct drm_i915_gem_request *rq; mutex_lock(&i915->drm.struct_mutex); - rq = hang_create_request(&h, engine, - i915->kernel_context); + rq = hang_create_request(&h, engine); if (IS_ERR(rq)) { err = PTR_ERR(rq); mutex_unlock(&i915->drm.struct_mutex); @@ -687,8 +695,7 @@ static int __igt_reset_engine_others(struct drm_i915_private *i915, struct drm_i915_gem_request *rq; mutex_lock(&i915->drm.struct_mutex); - rq = hang_create_request(&h, engine, - i915->kernel_context); + rq = hang_create_request(&h, engine); if (IS_ERR(rq)) { err = PTR_ERR(rq); mutex_unlock(&i915->drm.struct_mutex); @@ -843,7 +850,7 @@ static int igt_wait_reset(void *arg) if (err) goto unlock; - rq = hang_create_request(&h, i915->engine[RCS], i915->kernel_context); + rq = hang_create_request(&h, i915->engine[RCS]); if (IS_ERR(rq)) { err = PTR_ERR(rq); goto fini; @@ -922,7 +929,7 @@ static int igt_reset_queue(void *arg) if (!intel_engine_can_store_dword(engine)) continue; - prev = hang_create_request(&h, engine, i915->kernel_context); + prev = hang_create_request(&h, engine); if (IS_ERR(prev)) { err = PTR_ERR(prev); goto fini; @@ -936,9 +943,7 @@ static int igt_reset_queue(void *arg) struct drm_i915_gem_request *rq; unsigned int reset_count; - rq = hang_create_request(&h, - engine, - i915->kernel_context); + rq = hang_create_request(&h, engine); if (IS_ERR(rq)) { err = PTR_ERR(rq); goto fini; @@ -1049,7 +1054,7 @@ static int igt_handle_error(void *arg) if (err) goto err_unlock; - rq = hang_create_request(&h, engine, i915->kernel_context); + rq = hang_create_request(&h, engine); if (IS_ERR(rq)) { err = PTR_ERR(rq); goto err_fini; diff --git a/drivers/gpu/drm/i915/selftests/mock_context.c b/drivers/gpu/drm/i915/selftests/mock_context.c index bbf80d42e793..501becc47c0c 100644 --- a/drivers/gpu/drm/i915/selftests/mock_context.c +++ b/drivers/gpu/drm/i915/selftests/mock_context.c @@ -92,3 +92,14 @@ live_context(struct drm_i915_private *i915, struct drm_file *file) return i915_gem_create_context(i915, file->driver_priv); } + +struct i915_gem_context * +kernel_context(struct drm_i915_private *i915) +{ + return i915_gem_context_create_kernel(i915, I915_PRIORITY_NORMAL); +} + +void kernel_context_close(struct i915_gem_context *ctx) +{ + context_close(ctx); +} diff --git a/drivers/gpu/drm/i915/selftests/mock_context.h b/drivers/gpu/drm/i915/selftests/mock_context.h index 2f432c03d413..29b9d60a158b 100644 --- a/drivers/gpu/drm/i915/selftests/mock_context.h +++ b/drivers/gpu/drm/i915/selftests/mock_context.h @@ -36,4 +36,7 @@ void mock_context_close(struct i915_gem_context *ctx); struct i915_gem_context * live_context(struct drm_i915_private *i915, struct drm_file *file); +struct i915_gem_context *kernel_context(struct drm_i915_private *i915); +void kernel_context_close(struct i915_gem_context *ctx); + #endif /* !__MOCK_CONTEXT_H */ -- 2.30.2