gpu: nvgpu: initialize gr->max_comptag_mem in linux

We initialize gr->max_comptag_mem in common code and with a global variable
declared in <linux/mm.h>

Move this linux specific dependency to linux specific files i.e.
initialize gr->max_comptag_mem during linux specific probe functions

Jira NVGPU-414

Change-Id: I9415938bf1288b24950ba7ecc71abee3162dae64
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1606195
Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@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, 5 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/common/linux/vgpu/vgpu.c b/drivers/gpu/nvgpu/common/linux/vgpu/vgpu.c
index 10c2211e..f6c13db1 100644
--- a/drivers/gpu/nvgpu/common/linux/vgpu/vgpu.c
+++ b/drivers/gpu/nvgpu/common/linux/vgpu/vgpu.c
@@ -16,6 +16,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
+#include <linux/mm.h>
 #include <linux/delay.h>
 #include <linux/dma-mapping.h>
 #include <linux/pm_runtime.h>
@@ -756,6 +757,10 @@ int vgpu_probe(struct platform_device *pdev)
         vgpu_create_sysfs(dev);
         gk20a_init_gr(gk20a);
 
+        gk20a_dbg_info("total ram pages : %lu", totalram_pages);
+        gk20a->gr.max_comptag_mem = totalram_pages
+                                 >> (10 - (PAGE_SHIFT - 10));
+
         nvgpu_ref_init(&gk20a->refcount);
 
         return 0;