video: tegra: nvmap: Add get func for pool size

Add a function to get the page pool's size without requiring
users to traverse the nvmap structs.

Change-Id: I40e633a1454d696a3602352b2c708ba56f8e2bb3
Signed-off-by: Alex Waterman <alexw@nvidia.com>
Reviewed-on: http://git-master/r/401169
GVS: Gerrit_Virtual_Submit
Reviewed-by: Krishna Reddy <vdumpa@nvidia.com>

1 files changed, 5 insertions, 0 deletions

diff --git a/include/linux/nvmap.h b/include/linux/nvmap.h
index 041e7fe26..3bfb365b2 100644
--- a/include/linux/nvmap.h
+++ b/include/linux/nvmap.h
@@ -66,11 +66,16 @@ int nvmap_get_dmabuf_param(struct dma_buf *dmabuf, u32 param, u64 *result);
 
 #ifdef CONFIG_NVMAP_PAGE_POOLS
 ulong nvmap_page_pool_get_unused_pages(void);
+ulong nvmap_page_pool_get_pool_size(void);
 #else
 static inline int nvmap_page_pool_get_unused_pages(void)
 {
         return 0;
 }
+static inline int nvmap_page_pool_get_pool_size(void)
+{
+        return 0;
+}
 #endif
 
 ulong nvmap_iovmm_get_used_pages(void);