X-Git-Url: http://git.lttng.org/?a=blobdiff_plain;f=libringbuffer%2Ffrontend_types.h;h=32462f6b5725cb5ab1883566ee7bc397e43ad528;hb=44c72f10aa3cace72ffe40a0f9bb7aadb9c82dc8;hp=120e1f4bbbe06b94cea844fb5b654b60c81e04a6;hpb=4cfec15c93af7e0cfe3ce769ee90486bb8ab7c37;p=lttng-ust.git

diff --git a/libringbuffer/frontend_types.h b/libringbuffer/frontend_types.h
index 120e1f4b..32462f6b 100644
--- a/libringbuffer/frontend_types.h
+++ b/libringbuffer/frontend_types.h
@@ -21,12 +21,11 @@
 #include <urcu/list.h>
 #include <urcu/uatomic.h>
 
-#include "ust/core.h"
-
-#include <ust/usterr-signal-safe.h>
-#include <ust/ringbuffer-config.h>
+#include <lttng/ringbuffer-config.h>
+#include <usterr-signal-safe.h>
 #include "backend_types.h"
 #include "shm_internal.h"
+#include "vatomic.h"
 
 /*
  * A switch is done during tracing or as a final flush after tracing (so it
@@ -48,23 +47,24 @@ struct channel {
 	unsigned long read_timer_interval;	/* Reader wakeup (jiffies) */
 	//wait_queue_head_t read_wait;		/* reader wait queue */
 	int finalized;				/* Has channel been finalized */
+	size_t priv_data_offset;
 	/*
 	 * Associated backend contains a variable-length array. Needs to
 	 * be last member.
 	 */
 	struct channel_backend backend;		/* Associated backend */
-} ____cacheline_aligned;
+} __attribute__((aligned(CAA_CACHE_LINE_SIZE)));
 
 /* Per-subbuffer commit counters used on the hot path */
 struct commit_counters_hot {
 	union v_atomic cc;		/* Commit counter */
 	union v_atomic seq;		/* Consecutive commits */
-} ____cacheline_aligned;
+} __attribute__((aligned(CAA_CACHE_LINE_SIZE)));
 
 /* Per-subbuffer commit counters used only on cold paths */
 struct commit_counters_cold {
 	union v_atomic cc_sb;		/* Incremented _once_ at sb switch */
-} ____cacheline_aligned;
+} __attribute__((aligned(CAA_CACHE_LINE_SIZE)));
 
 /* ring buffer state */
 struct lttng_ust_lib_ring_buffer {
@@ -109,14 +109,18 @@ struct lttng_ust_lib_ring_buffer {
 	int read_timer_enabled:1;	/* Protected by ring_buffer_nohz_lock */
 	/* shmp pointer to self */
 	DECLARE_SHMP(struct lttng_ust_lib_ring_buffer, self);
-} ____cacheline_aligned;
+} __attribute__((aligned(CAA_CACHE_LINE_SIZE)));
 
 static inline
 void *channel_get_private(struct channel *chan)
 {
-	return chan->backend.priv;
+	return ((char *) chan) + chan->priv_data_offset;
 }
 
+#ifndef __rb_same_type
+#define __rb_same_type(a, b)	__builtin_types_compatible_p(typeof(a), typeof(b))
+#endif
+
 /*
  * Issue warnings and disable channels upon internal error.
  * Can receive struct lttng_ust_lib_ring_buffer or struct lttng_ust_lib_ring_buffer_backend
@@ -125,13 +129,13 @@ void *channel_get_private(struct channel *chan)
 #define CHAN_WARN_ON(c, cond)						\
 	({								\
 		struct channel *__chan;					\
-		int _____ret = unlikely(cond);				\
+		int _____ret = caa_unlikely(cond);				\
 		if (_____ret) {						\
-			if (__same_type(*(c), struct channel_backend))	\
+			if (__rb_same_type(*(c), struct channel_backend))	\
 				__chan = caa_container_of((void *) (c),	\
 							struct channel, \
 							backend);	\
-			else if (__same_type(*(c), struct channel))	\
+			else if (__rb_same_type(*(c), struct channel))	\
 				__chan = (void *) (c);			\
 			else						\
 				BUG_ON(1);				\