gpu: nvgpu: Give nvgpu_kalloc a less generic name

Change nvgpu_kalloc() to nvgpu_big_[mz]alloc(). This is necessary
since the natural free function name for this is nvgpu_kfree() but
that conflicts with nvgpu_k[mz]alloc() (implemented in a subsequent
patch).

This API exists becasue not all allocation sizes can be determined
at compile time and in some cases sizes may vary across the system
page size. Thus always using kmalloc() could lead to OOM errors due
to fragmentation. But always using vmalloc() is wastful of memory
for small allocations. This API tries to alleviate those problems.

Bug 1799159
Bug 1823380

Change-Id: I49ec5292ce13bcdecf112afbb4a0cfffeeb5ecfc
Signed-off-by: Alex Waterman <alexw@nvidia.com>
Reviewed-on: http://git-master/r/1283827
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

1 files changed, 4 insertions, 3 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/mm_gk20a.c b/drivers/gpu/nvgpu/gk20a/mm_gk20a.c
index c95e744e..7a64f79b 100644
--- a/drivers/gpu/nvgpu/gk20a/mm_gk20a.c
+++ b/drivers/gpu/nvgpu/gk20a/mm_gk20a.c
@@ -31,6 +31,7 @@
 #include <uapi/linux/nvgpu.h>
 #include <trace/events/gk20a.h>
 
+#include <nvgpu/kmem.h>
 #include <nvgpu/timers.h>
 #include <nvgpu/allocator.h>
 #include <nvgpu/semaphore.h>
@@ -1486,8 +1487,8 @@ int gk20a_vm_get_buffers(struct vm_gk20a *vm,
 
         nvgpu_mutex_acquire(&vm->update_gmmu_lock);
 
-        buffer_list = nvgpu_kalloc(sizeof(*buffer_list) *
-                              vm->num_user_mapped_buffers, true);
+        buffer_list = nvgpu_big_zalloc(sizeof(*buffer_list) *
+                                          vm->num_user_mapped_buffers);
         if (!buffer_list) {
                 nvgpu_mutex_release(&vm->update_gmmu_lock);
                 return -ENOMEM;
@@ -1571,7 +1572,7 @@ void gk20a_vm_put_buffers(struct vm_gk20a *vm,
         gk20a_vm_mapping_batch_finish_locked(vm, &batch);
         nvgpu_mutex_release(&vm->update_gmmu_lock);
 
-        nvgpu_kfree(mapped_buffers);
+        nvgpu_big_free(mapped_buffers);
 }
 
 static void gk20a_vm_unmap_user(struct vm_gk20a *vm, u64 offset,