Merge commit 'perf/core' into perf/hw-breakpoint

Conflicts:
	kernel/Makefile
	kernel/trace/Makefile
	kernel/trace/trace.h
	samples/Makefile

Merge reason: We need to be uptodate with the perf events development
branch because we plan to rewrite the breakpoints API on top of
perf events.

1 files changed, 29 insertions, 7 deletions

diff --git a/drivers/char/agp/backend.c b/drivers/char/agp/backend.c
index cfa5a649dfe7..a56ca080e108 100644
--- a/drivers/char/agp/backend.c
+++ b/drivers/char/agp/backend.c
@@ -114,9 +114,9 @@ static int agp_find_max(void)
 	long memory, index, result;
 
 #if PAGE_SHIFT < 20
-	memory = num_physpages >> (20 - PAGE_SHIFT);
+	memory = totalram_pages >> (20 - PAGE_SHIFT);
 #else
-	memory = num_physpages << (PAGE_SHIFT - 20);
+	memory = totalram_pages << (PAGE_SHIFT - 20);
 #endif
 	index = 1;
 
@@ -149,9 +149,21 @@ static int agp_backend_initialize(struct agp_bridge_data *bridge)
 			return -ENOMEM;
 		}
 
-		bridge->scratch_page_real = phys_to_gart(page_to_phys(page));
-		bridge->scratch_page =
-		    bridge->driver->mask_memory(bridge, page, 0);
+		bridge->scratch_page_page = page;
+		if (bridge->driver->agp_map_page) {
+			if (bridge->driver->agp_map_page(page,
+							 &bridge->scratch_page_dma)) {
+				dev_err(&bridge->dev->dev,
+					"unable to dma-map scratch page\n");
+				rc = -ENOMEM;
+				goto err_out_nounmap;
+			}
+		} else {
+			bridge->scratch_page_dma = page_to_phys(page);
+		}
+
+		bridge->scratch_page = bridge->driver->mask_memory(bridge,
+						   bridge->scratch_page_dma, 0);
 	}
 
 	size_value = bridge->driver->fetch_size();
@@ -191,8 +203,14 @@ static int agp_backend_initialize(struct agp_bridge_data *bridge)
 	return 0;
 
 err_out:
+	if (bridge->driver->needs_scratch_page &&
+	    bridge->driver->agp_unmap_page) {
+		bridge->driver->agp_unmap_page(bridge->scratch_page_page,
+					       bridge->scratch_page_dma);
+	}
+err_out_nounmap:
 	if (bridge->driver->needs_scratch_page) {
-		void *va = gart_to_virt(bridge->scratch_page_real);
+		void *va = page_address(bridge->scratch_page_page);
 
 		bridge->driver->agp_destroy_page(va, AGP_PAGE_DESTROY_UNMAP);
 		bridge->driver->agp_destroy_page(va, AGP_PAGE_DESTROY_FREE);
@@ -219,7 +237,11 @@ static void agp_backend_cleanup(struct agp_bridge_data *bridge)
 
 	if (bridge->driver->agp_destroy_page &&
 	    bridge->driver->needs_scratch_page) {
-		void *va = gart_to_virt(bridge->scratch_page_real);
+		void *va = page_address(bridge->scratch_page_page);
+
+		if (bridge->driver->agp_unmap_page)
+			bridge->driver->agp_unmap_page(bridge->scratch_page_page,
+						       bridge->scratch_page_dma);
 
 		bridge->driver->agp_destroy_page(va, AGP_PAGE_DESTROY_UNMAP);
 		bridge->driver->agp_destroy_page(va, AGP_PAGE_DESTROY_FREE);