diff mbox

drm/i915/selftests: Only switch to kernel context when locked

Message ID 20180509065926.19207-1-chris@chris-wilson.co.uk (mailing list archive)
State New, archived
Headers show

Commit Message

Chris Wilson May 9, 2018, 6:59 a.m. UTC
In igt_flush_test() we try to switch back to the kernel context, but we
are only able to do so when we care called with struct_mutex held.

More CI fallout from lockdep being temporarily suppressed :(

Fixes: 4cdf65ce8cc2 ("drm/i915/selftests: Return to kernel context after each test")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
---
 drivers/gpu/drm/i915/selftests/igt_flush_test.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

Comments

Mika Kuoppala May 9, 2018, 8:19 a.m. UTC | #1
Chris Wilson <chris@chris-wilson.co.uk> writes:

> In igt_flush_test() we try to switch back to the kernel context, but we
> are only able to do so when we care called with struct_mutex held.

s/care/are

>
> More CI fallout from lockdep being temporarily suppressed :(

Kind words.../o\

Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>

>
> Fixes: 4cdf65ce8cc2 ("drm/i915/selftests: Return to kernel context after each test")
> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
> Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
> ---
>  drivers/gpu/drm/i915/selftests/igt_flush_test.c | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/i915/selftests/igt_flush_test.c b/drivers/gpu/drm/i915/selftests/igt_flush_test.c
> index 7f35bddc2e95..0d06f559243f 100644
> --- a/drivers/gpu/drm/i915/selftests/igt_flush_test.c
> +++ b/drivers/gpu/drm/i915/selftests/igt_flush_test.c
> @@ -57,7 +57,8 @@ int igt_flush_test(struct drm_i915_private *i915, unsigned int flags)
>  
>  	cond_resched();
>  
> -	if (i915_gem_switch_to_kernel_context(i915)) {
> +	if (flags & I915_WAIT_LOCKED &&
> +	    i915_gem_switch_to_kernel_context(i915)) {
>  		pr_err("Failed to switch back to kernel context; declaring wedged\n");
>  		i915_gem_set_wedged(i915);
>  	}
> -- 
> 2.17.0
Chris Wilson May 9, 2018, 9:21 a.m. UTC | #2
Quoting Patchwork (2018-05-09 09:57:55)
> == Series Details ==
> 
> Series: drm/i915/selftests: Only switch to kernel context when locked
> URL   : https://patchwork.freedesktop.org/series/42922/
> State : success
> 
> == Summary ==
> 
> = CI Bug Log - changes from CI_DRM_4161 -> Patchwork_8958 =
> 
> == Summary - WARNING ==
> 
>   Minor unknown changes coming with Patchwork_8958 need to be verified
>   manually.
>   
>   If you think the reported changes have nothing to do with the changes
>   introduced in Patchwork_8958, please notify your bug team to allow them
>   to document this new failure mode, which will reduce false positives in CI.
> 
>   External URL: https://patchwork.freedesktop.org/api/1.0/series/42922/revisions/1/mbox/

Pushed it before we have too many CI runs with the error.
-Chris
diff mbox

Patch

diff --git a/drivers/gpu/drm/i915/selftests/igt_flush_test.c b/drivers/gpu/drm/i915/selftests/igt_flush_test.c
index 7f35bddc2e95..0d06f559243f 100644
--- a/drivers/gpu/drm/i915/selftests/igt_flush_test.c
+++ b/drivers/gpu/drm/i915/selftests/igt_flush_test.c
@@ -57,7 +57,8 @@  int igt_flush_test(struct drm_i915_private *i915, unsigned int flags)
 
 	cond_resched();
 
-	if (i915_gem_switch_to_kernel_context(i915)) {
+	if (flags & I915_WAIT_LOCKED &&
+	    i915_gem_switch_to_kernel_context(i915)) {
 		pr_err("Failed to switch back to kernel context; declaring wedged\n");
 		i915_gem_set_wedged(i915);
 	}