[PATCH v2 05/11] drm/xe/sa: Allow making suballocations using custom gfp flags

[Michal Wajdeczko]

Actual xe_sa_manager implementation uses hardcoded GFP_KERNEL flag
during creation of suballocations but in upcoming patch we want to
reuse the xe_sa_manager in places where GFP_KERNEL is not allowed.
Add another variant of the xe_sa_bo_new() function that accepts
arbitrary gfp flags.

Signed-off-by: Michal Wajdeczko <michal.wajdeczko at intel.com>
Cc: Matthew Brost <matthew.brost at intel.com>
Reviewed-by: Matthew Brost <matthew.brost at intel.com>
---
v2: add kernel-doc for xe_sa_bo_new (Matt)
---
 drivers/gpu/drm/xe/xe_sa.c | 15 ++++++++++++---
 drivers/gpu/drm/xe/xe_sa.h | 19 +++++++++++++++++--
 2 files changed, 29 insertions(+), 5 deletions(-)

diff --git a/drivers/gpu/drm/xe/xe_sa.c b/drivers/gpu/drm/xe/xe_sa.c
index 0e78ae46667e..5f89e32b0640 100644
--- a/drivers/gpu/drm/xe/xe_sa.c
+++ b/drivers/gpu/drm/xe/xe_sa.c
@@ -74,8 +74,17 @@ struct xe_sa_manager *xe_sa_bo_manager_init(struct xe_tile *tile, u32 size, u32
 	return sa_manager;
 }
 
-struct drm_suballoc *xe_sa_bo_new(struct xe_sa_manager *sa_manager,
-				  unsigned int size)
+/**
+ * __xe_sa_bo_new() - Make a suballocation but use custom gfp flags.
+ * @sa_manager: the &xe_sa_manager
+ * @size: number of bytes we want to suballocate
+ * @gfp: gfp flags used for memory allocation. Typically GFP_KERNEL.
+ *
+ * Try to make a suballocation of size @size.
+ *
+ * Return: a &drm_suballoc, or an ERR_PTR.
+ */
+struct drm_suballoc *__xe_sa_bo_new(struct xe_sa_manager *sa_manager, u32 size, gfp_t gfp)
 {
 	/*
 	 * BB to large, return -ENOBUFS indicating user should split
@@ -84,7 +93,7 @@ struct drm_suballoc *xe_sa_bo_new(struct xe_sa_manager *sa_manager,
 	if (size > sa_manager->base.size)
 		return ERR_PTR(-ENOBUFS);
 
-	return drm_suballoc_new(&sa_manager->base, size, GFP_KERNEL, true, 0);
+	return drm_suballoc_new(&sa_manager->base, size, gfp, true, 0);
 }
 
 void xe_sa_bo_flush_write(struct drm_suballoc *sa_bo)
diff --git a/drivers/gpu/drm/xe/xe_sa.h b/drivers/gpu/drm/xe/xe_sa.h
index 4e96483057d7..a0341eafbe77 100644
--- a/drivers/gpu/drm/xe/xe_sa.h
+++ b/drivers/gpu/drm/xe/xe_sa.h
@@ -5,6 +5,7 @@
 #ifndef _XE_SA_H_
 #define _XE_SA_H_
 
+#include <linux/types.h>
 #include "xe_sa_types.h"
 
 struct dma_fence;
@@ -13,8 +14,22 @@ struct xe_tile;
 
 struct xe_sa_manager *xe_sa_bo_manager_init(struct xe_tile *tile, u32 size, u32 align);
 
-struct drm_suballoc *xe_sa_bo_new(struct xe_sa_manager *sa_manager,
-				  u32 size);
+struct drm_suballoc *__xe_sa_bo_new(struct xe_sa_manager *sa_manager, u32 size, gfp_t gfp);
+
+/**
+ * xe_sa_bo_new() - Make a suballocation.
+ * @sa_manager: the &xe_sa_manager
+ * @size: number of bytes we want to suballocate
+ *
+ * Try to make a suballocation of size @size.
+ *
+ * Return: a &drm_suballoc, or an ERR_PTR.
+ */
+static inline struct drm_suballoc *xe_sa_bo_new(struct xe_sa_manager *sa_manager, u32 size)
+{
+	return __xe_sa_bo_new(sa_manager, size, GFP_KERNEL);
+}
+
 void xe_sa_bo_flush_write(struct drm_suballoc *sa_bo);
 void xe_sa_bo_free(struct drm_suballoc *sa_bo,
 		   struct dma_fence *fence);
-- 
2.47.1