Add DRM(calloc), which is convenient, used by the new sis code, and takes

    advantage of M_ZERO on BSDs.

3 files changed, 24 insertions, 0 deletions

diff --git a/linux/drmP.h b/linux/drmP.h
index e80f7788..8a995dbe 100644
--- a/linux/drmP.h
+++ b/linux/drmP.h
@@ -817,6 +817,7 @@ extern void	     DRM(mem_init)(void);
 extern int	     DRM(mem_info)(char *buf, char **start, off_t offset,
 				   int request, int *eof, void *data);
 extern void	     *DRM(alloc)(size_t size, int area);
+extern void	     *DRM(calloc)(size_t nmemb, size_t size, int area);
 extern void	     *DRM(realloc)(void *oldpt, size_t oldsize, size_t size,
 				   int area);
 extern void	     DRM(free)(void *pt, size_t size, int area);
diff --git a/linux/drm_memory.h b/linux/drm_memory.h
index 4ac7bac5..59e86b0c 100644
--- a/linux/drm_memory.h
+++ b/linux/drm_memory.h
@@ -226,6 +226,18 @@ void *DRM(alloc)(size_t size, int area)
 	return kmalloc(size, GFP_KERNEL);
 }
 
+/** Wrapper around kmalloc() */
+void *DRM(calloc)(size_t size, size_t nmemb, int area)
+{
+	void *addr;
+
+	addr = kmalloc(size * nmemb, GFP_KERNEL);
+	if (addr != NULL)
+		memset((void *)addr, 0, size * nmemb);
+
+	return addr;
+}
+
 /** Wrapper around kmalloc() and kfree() */
 void *DRM(realloc)(void *oldpt, size_t oldsize, size_t size, int area)
 {
diff --git a/linux/drm_memory_debug.h b/linux/drm_memory_debug.h
index 3ef2a05c..fae419ec 100644
--- a/linux/drm_memory_debug.h
+++ b/linux/drm_memory_debug.h
@@ -167,6 +167,17 @@ void *DRM(alloc)(size_t size, int area)
 	return pt;
 }
 
+void *DRM(calloc)(size_t size, size_t nmemb, int area)
+{
+	void *addr;
+
+	addr = DRM(alloc)(nmemb * size, area);
+	if (addr != NULL)
+		memset((void *)addr, 0, size * nmemb);
+
+	return addr;
+}
+
 void *DRM(realloc)(void *oldpt, size_t oldsize, size_t size, int area)
 {
 	void *pt;