kmemtrace: use tracepoints

kmemtrace now uses tracepoints instead of markers. We no longer need to
use format specifiers to pass arguments.

Signed-off-by: Eduard - Gabriel Munteanu <eduard.munteanu@linux360.ro>
[ folded: Use the new TP_PROTO and TP_ARGS to fix the build.     ]
[ folded: fix build when CONFIG_KMEMTRACE is disabled.           ]
[ folded: define tracepoints when CONFIG_TRACEPOINTS is enabled. ]
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
LKML-Reference: <ae61c0f37156db8ec8dc0d5778018edde60a92e3.1237813499.git.eduard.munteanu@linux360.ro>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

3 files changed, 49 insertions, 65 deletions

diff --git a/include/linux/slab_def.h b/include/linux/slab_def.h
index f452365..5ac9b0b 100644
--- a/include/linux/slab_def.h
+++ b/include/linux/slab_def.h
@@ -73,8 +73,8 @@ found:
 
 		ret = kmem_cache_alloc_notrace(cachep, flags);
 
-		kmemtrace_mark_alloc(KMEMTRACE_TYPE_KMALLOC, _THIS_IP_, ret,
-				     size, slab_buffer_size(cachep), flags);
+		trace_kmalloc(_THIS_IP_, ret,
+			      size, slab_buffer_size(cachep), flags);
 
 		return ret;
 	}
@@ -128,9 +128,9 @@ found:
 
 		ret = kmem_cache_alloc_node_notrace(cachep, flags, node);
 
-		kmemtrace_mark_alloc_node(KMEMTRACE_TYPE_KMALLOC, _THIS_IP_,
-					  ret, size, slab_buffer_size(cachep),
-					  flags, node);
+		trace_kmalloc_node(_THIS_IP_, ret,
+				   size, slab_buffer_size(cachep),
+				   flags, node);
 
 		return ret;
 	}
diff --git a/include/linux/slub_def.h b/include/linux/slub_def.h
index a1f9052..5046f90 100644
--- a/include/linux/slub_def.h
+++ b/include/linux/slub_def.h
@@ -233,8 +233,7 @@ static __always_inline void *kmalloc_large(size_t size, gfp_t flags)
 	unsigned int order = get_order(size);
 	void *ret = (void *) __get_free_pages(flags | __GFP_COMP, order);
 
-	kmemtrace_mark_alloc(KMEMTRACE_TYPE_KMALLOC, _THIS_IP_, ret,
-			     size, PAGE_SIZE << order, flags);
+	trace_kmalloc(_THIS_IP_, ret, size, PAGE_SIZE << order, flags);
 
 	return ret;
 }
@@ -255,9 +254,7 @@ static __always_inline void *kmalloc(size_t size, gfp_t flags)
 
 			ret = kmem_cache_alloc_notrace(s, flags);
 
-			kmemtrace_mark_alloc(KMEMTRACE_TYPE_KMALLOC,
-					     _THIS_IP_, ret,
-					     size, s->size, flags);
+			trace_kmalloc(_THIS_IP_, ret, size, s->size, flags);
 
 			return ret;
 		}
@@ -296,9 +293,8 @@ static __always_inline void *kmalloc_node(size_t size, gfp_t flags, int node)
 
 		ret = kmem_cache_alloc_node_notrace(s, flags, node);
 
-		kmemtrace_mark_alloc_node(KMEMTRACE_TYPE_KMALLOC,
-					  _THIS_IP_, ret,
-					  size, s->size, flags, node);
+		trace_kmalloc_node(_THIS_IP_, ret,
+				   size, s->size, flags, node);
 
 		return ret;
 	}
diff --git a/include/trace/kmemtrace.h b/include/trace/kmemtrace.h
index ad8b785..28ee69f 100644
--- a/include/trace/kmemtrace.h
+++ b/include/trace/kmemtrace.h
@@ -9,65 +9,53 @@
 
 #ifdef __KERNEL__
 
+#include <linux/tracepoint.h>
 #include <linux/types.h>
-#include <linux/marker.h>
-
-enum kmemtrace_type_id {
-	KMEMTRACE_TYPE_KMALLOC = 0,	/* kmalloc() or kfree(). */
-	KMEMTRACE_TYPE_CACHE,		/* kmem_cache_*(). */
-	KMEMTRACE_TYPE_PAGES,		/* __get_free_pages() and friends. */
-};
 
 #ifdef CONFIG_KMEMTRACE
-
 extern void kmemtrace_init(void);
-
-extern void kmemtrace_mark_alloc_node(enum kmemtrace_type_id type_id,
-					     unsigned long call_site,
-					     const void *ptr,
-					     size_t bytes_req,
-					     size_t bytes_alloc,
-					     gfp_t gfp_flags,
-					     int node);
-
-extern void kmemtrace_mark_free(enum kmemtrace_type_id type_id,
-				       unsigned long call_site,
-				       const void *ptr);
-
-#else /* CONFIG_KMEMTRACE */
-
+#else
 static inline void kmemtrace_init(void)
 {
 }
-
-static inline void kmemtrace_mark_alloc_node(enum kmemtrace_type_id type_id,
-					     unsigned long call_site,
-					     const void *ptr,
-					     size_t bytes_req,
-					     size_t bytes_alloc,
-					     gfp_t gfp_flags,
-					     int node)
-{
-}
-
-static inline void kmemtrace_mark_free(enum kmemtrace_type_id type_id,
-				       unsigned long call_site,
-				       const void *ptr)
-{
-}
-
-#endif /* CONFIG_KMEMTRACE */
-
-static inline void kmemtrace_mark_alloc(enum kmemtrace_type_id type_id,
-					unsigned long call_site,
-					const void *ptr,
-					size_t bytes_req,
-					size_t bytes_alloc,
-					gfp_t gfp_flags)
-{
-	kmemtrace_mark_alloc_node(type_id, call_site, ptr,
-				  bytes_req, bytes_alloc, gfp_flags, -1);
-}
+#endif
+
+DECLARE_TRACE(kmalloc,
+	      TP_PROTO(unsigned long call_site,
+		      const void *ptr,
+		      size_t bytes_req,
+		      size_t bytes_alloc,
+		      gfp_t gfp_flags),
+	      TP_ARGS(call_site, ptr, bytes_req, bytes_alloc, gfp_flags));
+DECLARE_TRACE(kmem_cache_alloc,
+	      TP_PROTO(unsigned long call_site,
+		      const void *ptr,
+		      size_t bytes_req,
+		      size_t bytes_alloc,
+		      gfp_t gfp_flags),
+	      TP_ARGS(call_site, ptr, bytes_req, bytes_alloc, gfp_flags));
+DECLARE_TRACE(kmalloc_node,
+	      TP_PROTO(unsigned long call_site,
+		      const void *ptr,
+		      size_t bytes_req,
+		      size_t bytes_alloc,
+		      gfp_t gfp_flags,
+		      int node),
+	      TP_ARGS(call_site, ptr, bytes_req, bytes_alloc, gfp_flags, node));
+DECLARE_TRACE(kmem_cache_alloc_node,
+	      TP_PROTO(unsigned long call_site,
+		      const void *ptr,
+		      size_t bytes_req,
+		      size_t bytes_alloc,
+		      gfp_t gfp_flags,
+		      int node),
+	      TP_ARGS(call_site, ptr, bytes_req, bytes_alloc, gfp_flags, node));
+DECLARE_TRACE(kfree,
+	      TP_PROTO(unsigned long call_site, const void *ptr),
+	      TP_ARGS(call_site, ptr));
+DECLARE_TRACE(kmem_cache_free,
+	      TP_PROTO(unsigned long call_site, const void *ptr),
+	      TP_ARGS(call_site, ptr));
 
 #endif /* __KERNEL__ */