gpu: nvgpu: use nvgpu_list in clk arb code

clk arbiter code uses linux kernel specific 'list' handling.
Use 'nvgpu_list' data structure and constructs instead.
Also, remove other linux includes from clk_arb.c, while at it.

Jira VQRM-3741

Change-Id: I89bf73a62537447dc23726a43e1f6ad96589ae34
Signed-off-by: Sourab Gupta <sourabg@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1705962
Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com>
Reviewed-by: Alex Waterman <alexw@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

1 files changed, 29 insertions, 7 deletions

diff --git a/drivers/gpu/nvgpu/common/linux/clk_arb_linux.h b/drivers/gpu/nvgpu/common/linux/clk_arb_linux.h
index 0942dd86..e5ada25d 100644
--- a/drivers/gpu/nvgpu/common/linux/clk_arb_linux.h
+++ b/drivers/gpu/nvgpu/common/linux/clk_arb_linux.h
@@ -27,6 +27,7 @@
 #include <nvgpu/log.h>
 #include <nvgpu/barrier.h>
 #include <nvgpu/cond.h>
+#include <nvgpu/list.h>
 
 #include "gk20a/gk20a.h"
 #include "clk/clk.h"
@@ -44,9 +45,9 @@ struct nvgpu_clk_arb {
         struct nvgpu_spinlock requests_lock;
 
         struct nvgpu_mutex pstate_lock;
-        struct list_head users;
-        struct list_head sessions;
-        struct list_head requests;
+        struct nvgpu_list_node users;
+        struct nvgpu_list_node sessions;
+        struct nvgpu_list_node requests;
 
         struct gk20a *g;
         int status;
@@ -92,8 +93,8 @@ struct nvgpu_clk_arb {
 struct nvgpu_clk_dev {
         struct nvgpu_clk_session *session;
         union {
-                struct list_head link;
-                struct list_head node;
+                struct nvgpu_list_node link;
+                struct nvgpu_list_node node;
         };
         struct nvgpu_cond readout_wq;
         nvgpu_atomic_t poll_mask;
@@ -110,13 +111,34 @@ struct nvgpu_clk_session {
         bool zombie;
         struct gk20a *g;
         struct nvgpu_ref refcount;
-        struct list_head link;
-        struct list_head targets;
+        struct nvgpu_list_node link;
+        struct nvgpu_list_node targets;
 
         struct nvgpu_spinlock session_lock;
         struct nvgpu_clk_arb_target target_pool[2];
         struct nvgpu_clk_arb_target *target;
 };
 
+static inline struct nvgpu_clk_session *
+nvgpu_clk_session_from_link(struct nvgpu_list_node *node)
+{
+        return (struct nvgpu_clk_session *)
+           ((uintptr_t)node - offsetof(struct nvgpu_clk_session, link));
+};
+
+static inline struct nvgpu_clk_dev *
+nvgpu_clk_dev_from_node(struct nvgpu_list_node *node)
+{
+        return (struct nvgpu_clk_dev *)
+           ((uintptr_t)node - offsetof(struct nvgpu_clk_dev, node));
+};
+
+static inline struct nvgpu_clk_dev *
+nvgpu_clk_dev_from_link(struct nvgpu_list_node *node)
+{
+        return (struct nvgpu_clk_dev *)
+           ((uintptr_t)node - offsetof(struct nvgpu_clk_dev, link));
+};
+
 #endif /* __NVGPU_CLK_ARB_LINUX_H__ */