drm/exec, drm/xe, drm/amdgpu: Add an accessor for struct drm_exec::ticket

Drivers were accessing this drm_exec member directly.
While that may seem harmless, it will require action if
the drm_exec utility is made a subclass of a dma-resv transaction
utility as outlined in the cover-letter.

Provide an accessor, drm_exec_ticket() to avoid that.

v2:
- Fix amdgpu compile error (Intel CI)
- Update the commit message.

Signed-off-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Link: https://patch.msgid.link/20260520101616.41284-5-thomas.hellstrom@linux.intel.com

1 files changed, 11 insertions, 0 deletions

diff --git a/include/drm/drm_exec.h b/include/drm/drm_exec.h
index 99c7e1bb3c5b..8725ba92ff91 100644
--- a/include/drm/drm_exec.h
+++ b/include/drm/drm_exec.h
@@ -161,6 +161,17 @@ static inline bool drm_exec_is_contended(struct drm_exec *exec)
 		goto *__drm_exec_retry_ptr;			\
 	} while (0)
 
+/**
+ * drm_exec_ticket - return the ww_acquire_ctx for this exec context
+ * @exec: drm_exec object
+ *
+ * Return: Pointer to the ww_acquire_ctx embedded in @exec.
+ */
+static inline struct ww_acquire_ctx *drm_exec_ticket(struct drm_exec *exec)
+{
+	return &exec->ticket;
+}
+
 void drm_exec_init(struct drm_exec *exec, u32 flags, unsigned nr);
 void drm_exec_fini(struct drm_exec *exec);
 bool drm_exec_cleanup(struct drm_exec *exec);