-#ifndef _LTT_CHANNELS_H
-#define _LTT_CHANNELS_H
+#ifndef UST_CHANNELS_H
+#define UST_CHANNELS_H
/*
* Copyright (C) 2008 Mathieu Desnoyers (mathieu.desnoyers@polymtl.ca)
*
* Dynamic tracer channel allocation.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <linux/limits.h>
-//ust// #include <linux/kref.h>
-//ust// #include <linux/list.h>
#include <errno.h>
-
-#include "kernelcompat.h"
-#include "kref.h"
-#include "list.h"
+#include <ust/kcompat/kcompat.h>
+#include <urcu/list.h>
+#include <ust/core.h>
#define EVENTS_PER_CHANNEL 65536
+#define MAX_CPUS 32
-struct ltt_trace_struct;
-struct rchan_buf;
+struct ust_trace;
-struct ltt_channel_struct {
+struct ust_buffer;
+
+struct ust_channel {
/* First 32 bytes cache-hot cacheline */
- struct ltt_trace_struct *trace;
- void *buf;
- void *trans_channel_data;
+ struct ust_trace *trace;
+ int *buf_struct_shmids;
+ struct ust_buffer **buf;
int overwrite:1;
+ /* whether collection is requested upon trace start */
+ int request_collection:1;
int active:1;
unsigned int n_subbufs_order;
unsigned long commit_count_mask; /*
*/
/* End of first 32 bytes cacheline */
- /*
- * buffer_begin - called on buffer-switch to a new sub-buffer
- * @buf: the channel buffer containing the new sub-buffer
- */
- void (*buffer_begin) (struct rchan_buf *buf,
- u64 tsc, unsigned int subbuf_idx);
- /*
- * buffer_end - called on buffer-switch to a new sub-buffer
- * @buf: the channel buffer containing the previous sub-buffer
- */
- void (*buffer_end) (struct rchan_buf *buf,
- u64 tsc, unsigned int offset, unsigned int subbuf_idx);
struct kref kref; /* Channel transport reference count */
- unsigned int subbuf_size;
+ size_t subbuf_size;
+ int subbuf_size_order;
unsigned int subbuf_cnt;
const char *channel_name;
+ int n_cpus;
- int buf_shmid;
+ u32 version;
+ size_t alloc_size;
+ struct list_head list;
} ____cacheline_aligned;
struct ltt_channel_setting {
char name[PATH_MAX];
};
-int ltt_channels_register(const char *name);
-int ltt_channels_unregister(const char *name);
-int ltt_channels_set_default(const char *name,
+extern int ltt_channels_register(const char *name);
+extern int ltt_channels_unregister(const char *name);
+extern int ltt_channels_set_default(const char *name,
unsigned int subbuf_size,
unsigned int subbuf_cnt);
-const char *ltt_channels_get_name_from_index(unsigned int index);
-int ltt_channels_get_index_from_name(const char *name);
-struct ltt_channel_struct *ltt_channels_trace_alloc(unsigned int *nr_channels,
+extern const char *ltt_channels_get_name_from_index(unsigned int index);
+extern int ltt_channels_get_index_from_name(const char *name);
+extern struct ust_channel *ltt_channels_trace_alloc(unsigned int *nr_channels,
int overwrite,
+ int request_collection,
int active);
-void ltt_channels_trace_free(struct ltt_channel_struct *channels);
-int _ltt_channels_get_event_id(const char *channel, const char *name);
-int ltt_channels_get_event_id(const char *channel, const char *name);
+extern void ltt_channels_trace_free(struct ust_channel *channels);
+extern int _ltt_channels_get_event_id(const char *channel, const char *name);
+extern int ltt_channels_get_event_id(const char *channel, const char *name);
+
+extern int ust_channels_overwrite_by_default;
+extern int ust_channels_request_collection_by_default;
-#endif /* _LTT_CHANNELS_H */
+#endif /* UST_CHANNELS_H */