[PATCH 1/2] drm/ttm: add interface to export kernel_zone max memory size in ttm

[Qingqing.Wang@xxxxxxx (Ken Wang)]

Change-Id: I9f30b54365492b234a7f0887dd0c67a9817c3705
Signed-off-by: Ken Wang <Qingqing.Wang at amd.com>
---
 drivers/gpu/drm/ttm/ttm_memory.c | 6 ++++++
 include/drm/ttm/ttm_memory.h     | 1 +
 2 files changed, 7 insertions(+)

diff --git a/drivers/gpu/drm/ttm/ttm_memory.c b/drivers/gpu/drm/ttm/ttm_memory.c
index a1803fb..29855be 100644
--- a/drivers/gpu/drm/ttm/ttm_memory.c
+++ b/drivers/gpu/drm/ttm/ttm_memory.c
@@ -600,3 +600,9 @@ size_t ttm_round_pot(size_t size)
 	return 0;
 }
 EXPORT_SYMBOL(ttm_round_pot);
+
+uint64_t ttm_get_kernel_zone_memory_size(struct ttm_mem_global *glob)
+{
+	return glob->zone_kernel->max_mem;
+}
+EXPORT_SYMBOL(ttm_get_kernel_zone_memory_size);
diff --git a/include/drm/ttm/ttm_memory.h b/include/drm/ttm/ttm_memory.h
index 72dcbe8..c452089 100644
--- a/include/drm/ttm/ttm_memory.h
+++ b/include/drm/ttm/ttm_memory.h
@@ -155,4 +155,5 @@ extern int ttm_mem_global_alloc_page(struct ttm_mem_global *glob,
 extern void ttm_mem_global_free_page(struct ttm_mem_global *glob,
 				     struct page *page);
 extern size_t ttm_round_pot(size_t size);
+extern uint64_t ttm_get_kernel_zone_memory_size(struct ttm_mem_global *glob);
 #endif
-- 
2.7.4