gpu: nvgpu: Add a macro of totalram_size_in_mb

There are two (would be more) places calculating the ram size in MB from
page numbers, so this patch just simply adds a macro for simplification.

Bug 2327574
Bug 2284925

Change-Id: Ie5dc387d547e1b8ce98946f0637dc17a6897e5a6
Signed-off-by: Nicolin Chen <nicolinc@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1810333
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

3 files changed, 4 insertions, 4 deletions

diff --git a/drivers/gpu/nvgpu/os/linux/driver_common.c b/drivers/gpu/nvgpu/os/linux/driver_common.c
index b81cc90c..4d345aaa 100644
--- a/drivers/gpu/nvgpu/os/linux/driver_common.c
+++ b/drivers/gpu/nvgpu/os/linux/driver_common.c
@@ -98,8 +98,7 @@ static void nvgpu_init_gr_vars(struct gk20a *g)
         gk20a_init_gr(g);
 
         nvgpu_log_info(g, "total ram pages : %lu", totalram_pages);
-        g->gr.max_comptag_mem = totalram_pages
-                                 >> (10 - (PAGE_SHIFT - 10));
+        g->gr.max_comptag_mem = totalram_size_in_mb;
 
         /* Deduct the part taken by the running system */
         if (platform->comptag_mem_deduct &&
diff --git a/drivers/gpu/nvgpu/os/linux/os_linux.h b/drivers/gpu/nvgpu/os/linux/os_linux.h
index 13c20a81..5f35db09 100644
--- a/drivers/gpu/nvgpu/os/linux/os_linux.h
+++ b/drivers/gpu/nvgpu/os/linux/os_linux.h
@@ -165,4 +165,6 @@ static inline struct device *dev_from_gk20a(struct gk20a *g)
 
 #define INTERFACE_NAME "nvhost%s-gpu"
 
+#define totalram_size_in_mb (totalram_pages >> (10 - (PAGE_SHIFT - 10)))
+
 #endif
diff --git a/drivers/gpu/nvgpu/os/linux/vgpu/vgpu_linux.c b/drivers/gpu/nvgpu/os/linux/vgpu/vgpu_linux.c
index 83191316..33c067c6 100644
--- a/drivers/gpu/nvgpu/os/linux/vgpu/vgpu_linux.c
+++ b/drivers/gpu/nvgpu/os/linux/vgpu/vgpu_linux.c
@@ -439,8 +439,7 @@ int vgpu_probe(struct platform_device *pdev)
         gk20a_init_gr(gk20a);
 
         nvgpu_log_info(gk20a, "total ram pages : %lu", totalram_pages);
-        gk20a->gr.max_comptag_mem = totalram_pages
-                                 >> (10 - (PAGE_SHIFT - 10));
+        gk20a->gr.max_comptag_mem = totalram_size_in_mb;
 
         nvgpu_ref_init(&gk20a->refcount);