diff mbox series

drm/i915/selftests: Fix NULL vs IS_ERR checking for kernel_context

Message ID 20211222075832.1732-1-linmq006@gmail.com (mailing list archive)
State New, archived
Headers show
Series drm/i915/selftests: Fix NULL vs IS_ERR checking for kernel_context | expand

Commit Message

Miaoqian Lin Dec. 22, 2021, 7:58 a.m. UTC 
Since i915_gem_create_context() function return error pointers,
the kernel_context() function does not return null, It returns error
pointers too. Using IS_ERR() to check the return value to fix this.

Signed-off-by: Miaoqian Lin <linmq006@gmail.com>
---
 drivers/gpu/drm/i915/gt/selftest_execlists.c | 41 ++++++++++++++------
 1 file changed, 29 insertions(+), 12 deletions(-)

Comments

Matthew Brost Jan. 12, 2022, 5:53 p.m. UTC | #1 
On Wed, Dec 22, 2021 at 07:58:29AM +0000, Miaoqian Lin wrote:
> Since i915_gem_create_context() function return error pointers,
> the kernel_context() function does not return null, It returns error
> pointers too. Using IS_ERR() to check the return value to fix this.
> 

Just a nit, err is initialized to -ENOMEM in a bunch of these tests
which isn't needed anymore. If you want to clean that up too, feel free.

With that:
Reviewed-by: Matthew Brost <matthew.brost@intel.com> 

> Signed-off-by: Miaoqian Lin <linmq006@gmail.com>
> ---
>  drivers/gpu/drm/i915/gt/selftest_execlists.c | 41 ++++++++++++++------
>  1 file changed, 29 insertions(+), 12 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/gt/selftest_execlists.c b/drivers/gpu/drm/i915/gt/selftest_execlists.c
> index b367ecfa42de..eacfe920afed 100644
> --- a/drivers/gpu/drm/i915/gt/selftest_execlists.c
> +++ b/drivers/gpu/drm/i915/gt/selftest_execlists.c
> @@ -1540,13 +1540,16 @@ static int live_busywait_preempt(void *arg)
>  	 */
>  
>  	ctx_hi = kernel_context(gt->i915, NULL);
> -	if (!ctx_hi)
> -		return -ENOMEM;
> +	if (IS_ERR(ctx_hi))
> +		return IS_ERR(ctx_hi);
> +
>  	ctx_hi->sched.priority = I915_CONTEXT_MAX_USER_PRIORITY;
>  
>  	ctx_lo = kernel_context(gt->i915, NULL);
> -	if (!ctx_lo)
> +	if (IS_ERR(ctx_lo)) {
> +		err = PTR_ERR(ctx_lo);
>  		goto err_ctx_hi;
> +	}
>  	ctx_lo->sched.priority = I915_CONTEXT_MIN_USER_PRIORITY;
>  
>  	obj = i915_gem_object_create_internal(gt->i915, PAGE_SIZE);
> @@ -1742,13 +1745,17 @@ static int live_preempt(void *arg)
>  		goto err_spin_hi;
>  
>  	ctx_hi = kernel_context(gt->i915, NULL);
> -	if (!ctx_hi)
> +	if (IS_ERR(ctx_hi)) {
> +		err = PTR_ERR(ctx_hi);
>  		goto err_spin_lo;
> +	}
>  	ctx_hi->sched.priority = I915_CONTEXT_MAX_USER_PRIORITY;
>  
>  	ctx_lo = kernel_context(gt->i915, NULL);
> -	if (!ctx_lo)
> +	if (IS_ERR(ctx_lo)) {
> +		err = PTR_ERR(ctx_lo);
>  		goto err_ctx_hi;
> +	}
>  	ctx_lo->sched.priority = I915_CONTEXT_MIN_USER_PRIORITY;
>  
>  	for_each_engine(engine, gt, id) {
> @@ -1834,12 +1841,16 @@ static int live_late_preempt(void *arg)
>  		goto err_spin_hi;
>  
>  	ctx_hi = kernel_context(gt->i915, NULL);
> -	if (!ctx_hi)
> +	if (IS_ERR(ctx_hi)) {
> +		err = PTR_ERR(ctx_hi);
>  		goto err_spin_lo;
> +	}
>  
>  	ctx_lo = kernel_context(gt->i915, NULL);
> -	if (!ctx_lo)
> +	if (IS_ERR(ctx_lo)) {
> +		err = PTR_ERR(ctx_lo);
>  		goto err_ctx_hi;
> +	}
>  
>  	/* Make sure ctx_lo stays before ctx_hi until we trigger preemption. */
>  	ctx_lo->sched.priority = 1;
> @@ -1928,8 +1939,8 @@ struct preempt_client {
>  static int preempt_client_init(struct intel_gt *gt, struct preempt_client *c)
>  {
>  	c->ctx = kernel_context(gt->i915, NULL);
> -	if (!c->ctx)
> -		return -ENOMEM;
> +	if (IS_ERR(c->ctx))
> +		return PTR_ERR(c->ctx);
>  
>  	if (igt_spinner_init(&c->spin, gt))
>  		goto err_ctx;
> @@ -3385,13 +3396,17 @@ static int live_preempt_timeout(void *arg)
>  		return -ENOMEM;
>  
>  	ctx_hi = kernel_context(gt->i915, NULL);
> -	if (!ctx_hi)
> +	if (IS_ERR(ctx_hi)) {
> +		err = PTR_ERR(ctx_hi);
>  		goto err_spin_lo;
> +	}
>  	ctx_hi->sched.priority = I915_CONTEXT_MAX_USER_PRIORITY;
>  
>  	ctx_lo = kernel_context(gt->i915, NULL);
> -	if (!ctx_lo)
> +	if (IS_ERR(ctx_lo)) {
> +		err = PTR_ERR(ctx_lo);
>  		goto err_ctx_hi;
> +	}
>  	ctx_lo->sched.priority = I915_CONTEXT_MIN_USER_PRIORITY;
>  
>  	for_each_engine(engine, gt, id) {
> @@ -3683,8 +3698,10 @@ static int live_preempt_smoke(void *arg)
>  
>  	for (n = 0; n < smoke.ncontext; n++) {
>  		smoke.contexts[n] = kernel_context(smoke.gt->i915, NULL);
> -		if (!smoke.contexts[n])
> +		if (IS_ERR(smoke.contexts[n])) {
> +			err = PTR_ERR(smoke.contexts[n]);
>  			goto err_ctx;
> +		}
>  	}
>  
>  	for (n = 0; n < ARRAY_SIZE(phase); n++) {
> -- 
> 2.17.1
>
diff mbox series

Patch

diff --git a/drivers/gpu/drm/i915/gt/selftest_execlists.c b/drivers/gpu/drm/i915/gt/selftest_execlists.c
index b367ecfa42de..eacfe920afed 100644
--- a/drivers/gpu/drm/i915/gt/selftest_execlists.c
+++ b/drivers/gpu/drm/i915/gt/selftest_execlists.c
@@ -1540,13 +1540,16 @@  static int live_busywait_preempt(void *arg)
 	 */
 
 	ctx_hi = kernel_context(gt->i915, NULL);
-	if (!ctx_hi)
-		return -ENOMEM;
+	if (IS_ERR(ctx_hi))
+		return IS_ERR(ctx_hi);
+
 	ctx_hi->sched.priority = I915_CONTEXT_MAX_USER_PRIORITY;
 
 	ctx_lo = kernel_context(gt->i915, NULL);
-	if (!ctx_lo)
+	if (IS_ERR(ctx_lo)) {
+		err = PTR_ERR(ctx_lo);
 		goto err_ctx_hi;
+	}
 	ctx_lo->sched.priority = I915_CONTEXT_MIN_USER_PRIORITY;
 
 	obj = i915_gem_object_create_internal(gt->i915, PAGE_SIZE);
@@ -1742,13 +1745,17 @@  static int live_preempt(void *arg)
 		goto err_spin_hi;
 
 	ctx_hi = kernel_context(gt->i915, NULL);
-	if (!ctx_hi)
+	if (IS_ERR(ctx_hi)) {
+		err = PTR_ERR(ctx_hi);
 		goto err_spin_lo;
+	}
 	ctx_hi->sched.priority = I915_CONTEXT_MAX_USER_PRIORITY;
 
 	ctx_lo = kernel_context(gt->i915, NULL);
-	if (!ctx_lo)
+	if (IS_ERR(ctx_lo)) {
+		err = PTR_ERR(ctx_lo);
 		goto err_ctx_hi;
+	}
 	ctx_lo->sched.priority = I915_CONTEXT_MIN_USER_PRIORITY;
 
 	for_each_engine(engine, gt, id) {
@@ -1834,12 +1841,16 @@  static int live_late_preempt(void *arg)
 		goto err_spin_hi;
 
 	ctx_hi = kernel_context(gt->i915, NULL);
-	if (!ctx_hi)
+	if (IS_ERR(ctx_hi)) {
+		err = PTR_ERR(ctx_hi);
 		goto err_spin_lo;
+	}
 
 	ctx_lo = kernel_context(gt->i915, NULL);
-	if (!ctx_lo)
+	if (IS_ERR(ctx_lo)) {
+		err = PTR_ERR(ctx_lo);
 		goto err_ctx_hi;
+	}
 
 	/* Make sure ctx_lo stays before ctx_hi until we trigger preemption. */
 	ctx_lo->sched.priority = 1;
@@ -1928,8 +1939,8 @@  struct preempt_client {
 static int preempt_client_init(struct intel_gt *gt, struct preempt_client *c)
 {
 	c->ctx = kernel_context(gt->i915, NULL);
-	if (!c->ctx)
-		return -ENOMEM;
+	if (IS_ERR(c->ctx))
+		return PTR_ERR(c->ctx);
 
 	if (igt_spinner_init(&c->spin, gt))
 		goto err_ctx;
@@ -3385,13 +3396,17 @@  static int live_preempt_timeout(void *arg)
 		return -ENOMEM;
 
 	ctx_hi = kernel_context(gt->i915, NULL);
-	if (!ctx_hi)
+	if (IS_ERR(ctx_hi)) {
+		err = PTR_ERR(ctx_hi);
 		goto err_spin_lo;
+	}
 	ctx_hi->sched.priority = I915_CONTEXT_MAX_USER_PRIORITY;
 
 	ctx_lo = kernel_context(gt->i915, NULL);
-	if (!ctx_lo)
+	if (IS_ERR(ctx_lo)) {
+		err = PTR_ERR(ctx_lo);
 		goto err_ctx_hi;
+	}
 	ctx_lo->sched.priority = I915_CONTEXT_MIN_USER_PRIORITY;
 
 	for_each_engine(engine, gt, id) {
@@ -3683,8 +3698,10 @@  static int live_preempt_smoke(void *arg)
 
 	for (n = 0; n < smoke.ncontext; n++) {
 		smoke.contexts[n] = kernel_context(smoke.gt->i915, NULL);
-		if (!smoke.contexts[n])
+		if (IS_ERR(smoke.contexts[n])) {
+			err = PTR_ERR(smoke.contexts[n]);
 			goto err_ctx;
+		}
 	}
 
 	for (n = 0; n < ARRAY_SIZE(phase); n++) {