gpu: nvgpu: Use vmalloc only when size >4K

When allocation size is 4k or below, we should use kmalloc. vmalloc
should be used only for larged allocations.

Introduce nvgpu_alloc, which checks the size, and decides the API
to use.

Change-Id: I593110467cd319851b27e57d1bfe8d228d3f2909
Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-on: http://git-master/r/743974
(cherry picked from commit 7f56aa1f0ecafbfde7286353b60e25e494674d26)
Reviewed-on: http://git-master/r/753276
Reviewed-by: Automatic_Commit_Validation_User

1 files changed, 3 insertions, 3 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/mm_gk20a.c b/drivers/gpu/nvgpu/gk20a/mm_gk20a.c
index a38db709..342d3ace 100644
--- a/drivers/gpu/nvgpu/gk20a/mm_gk20a.c
+++ b/drivers/gpu/nvgpu/gk20a/mm_gk20a.c
@@ -745,8 +745,8 @@ int gk20a_vm_get_buffers(struct vm_gk20a *vm,
 
         mutex_lock(&vm->update_gmmu_lock);
 
-        buffer_list = kzalloc(sizeof(*buffer_list) *
-                              vm->num_user_mapped_buffers, GFP_KERNEL);
+        buffer_list = nvgpu_alloc(sizeof(*buffer_list) *
+                              vm->num_user_mapped_buffers, true);
         if (!buffer_list) {
                 mutex_unlock(&vm->update_gmmu_lock);
                 return -ENOMEM;
@@ -795,7 +795,7 @@ void gk20a_vm_put_buffers(struct vm_gk20a *vm,
 
         mutex_unlock(&vm->update_gmmu_lock);
 
-        kfree(mapped_buffers);
+        nvgpu_free(mapped_buffers);
 }
 
 static void gk20a_vm_unmap_user(struct vm_gk20a *vm, u64 offset)