-#ifndef _LINUX_RING_BUFFER_CONFIG_H
-#define _LINUX_RING_BUFFER_CONFIG_H
+#ifndef _LTTNG_RING_BUFFER_CONFIG_H
+#define _LTTNG_RING_BUFFER_CONFIG_H
/*
- * linux/ringbuffer/config.h
+ * lttng/ringbuffer-config.h
*
* Copyright (C) 2010 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
*
* Ring buffer configuration header. Note: after declaring the standard inline
* functions, clients should also include linux/ringbuffer/api.h.
*
- * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED
- * OR IMPLIED. ANY USE IS AT YOUR OWN RISK.
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
*
- * Permission is hereby granted to use or copy this program
- * for any purpose, provided the above notices are retained on all copies.
- * Permission to modify the code and to distribute modified code is granted,
- * provided the above notices are retained, and a notice that the code was
- * modified is included with the above copyright notice.
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
*/
#include <errno.h>
#include "lttng/ust-tracer.h"
-#include "lttng/usterr-signal-safe.h"
#include <stdint.h>
#include <stddef.h>
#include <urcu/arch.h>
+#include <string.h>
#include "lttng/align.h"
+#include <lttng/ust-compiler.h>
struct lttng_ust_lib_ring_buffer;
struct channel;
struct lttng_ust_lib_ring_buffer_config;
struct lttng_ust_lib_ring_buffer_ctx;
-struct lttng_ust_shm_handle *handle;
+struct lttng_ust_shm_handle;
/*
* Ring buffer client callbacks. Only used by slow path, never on fast path.
* RING_BUFFER_WAKEUP_NONE does not perform any wakeup whatsoever. The client
* has the responsibility to perform wakeups.
*/
+#define LTTNG_UST_RING_BUFFER_CONFIG_PADDING 32
struct lttng_ust_lib_ring_buffer_config {
enum {
RING_BUFFER_ALLOC_PER_CPU,
* callbacks and update the cb pointers.
*/
int client_type;
+ char padding[LTTNG_UST_RING_BUFFER_CONFIG_PADDING];
};
/*
* lib_ring_buffer_try_discard_reserve(), lib_ring_buffer_align_ctx() and
* lib_ring_buffer_write().
*/
+#define LTTNG_UST_RING_BUFFER_CTX_PADDING 24
struct lttng_ust_lib_ring_buffer_ctx {
/* input received by lib_ring_buffer_reserve(), saved here. */
struct channel *chan; /* channel */
*/
uint64_t tsc; /* time-stamp counter value */
unsigned int rflags; /* reservation flags */
+ char padding[LTTNG_UST_RING_BUFFER_CTX_PADDING];
};
/**
* @largest_align: largest alignment within data payload types
* @cpu: processor id
*/
+static inline lttng_ust_notrace
+void lib_ring_buffer_ctx_init(struct lttng_ust_lib_ring_buffer_ctx *ctx,
+ struct channel *chan, void *priv,
+ size_t data_size, int largest_align,
+ int cpu, struct lttng_ust_shm_handle *handle);
static inline
void lib_ring_buffer_ctx_init(struct lttng_ust_lib_ring_buffer_ctx *ctx,
struct channel *chan, void *priv,
ctx->cpu = cpu;
ctx->rflags = 0;
ctx->handle = handle;
+ memset(ctx->padding, 0, LTTNG_UST_RING_BUFFER_CTX_PADDING);
}
/*
* Calculate the offset needed to align the type.
* size_of_type must be non-zero.
*/
+static inline lttng_ust_notrace
+unsigned int lib_ring_buffer_align(size_t align_drift, size_t size_of_type);
static inline
unsigned int lib_ring_buffer_align(size_t align_drift, size_t size_of_type)
{
* Calculate the offset needed to align the type.
* size_of_type must be non-zero.
*/
+static inline lttng_ust_notrace
+unsigned int lib_ring_buffer_align(size_t align_drift, size_t size_of_type);
static inline
unsigned int lib_ring_buffer_align(size_t align_drift, size_t size_of_type)
{
* lib_ring_buffer_align_ctx - Align context offset on "alignment"
* @ctx: ring buffer context.
*/
+static inline lttng_ust_notrace
+void lib_ring_buffer_align_ctx(struct lttng_ust_lib_ring_buffer_ctx *ctx,
+ size_t alignment);
static inline
void lib_ring_buffer_align_ctx(struct lttng_ust_lib_ring_buffer_ctx *ctx,
size_t alignment)
* lib_ring_buffer_check_config() returns 0 on success.
* Used internally to check for valid configurations at channel creation.
*/
+static inline lttng_ust_notrace
+int lib_ring_buffer_check_config(const struct lttng_ust_lib_ring_buffer_config *config,
+ unsigned int switch_timer_interval,
+ unsigned int read_timer_interval);
static inline
int lib_ring_buffer_check_config(const struct lttng_ust_lib_ring_buffer_config *config,
unsigned int switch_timer_interval,
return 0;
}
-#endif /* _LINUX_RING_BUFFER_CONFIG_H */
+#endif /* _LTTNG_RING_BUFFER_CONFIG_H */