/*
* Copyright (C) 2005,2006,2008 Mathieu Desnoyers (mathieu.desnoyers@polymtl.ca)
+ * Copyright (C) 2009 Pierre-Marc Fournier
*
* This contains the definitions for the Linux Trace Toolkit tracer.
+ *
+ * Ported to userspace by Pierre-Marc Fournier.
+ *
+ * This file is released under the GPLv2.
*/
#ifndef _LTT_TRACER_H
#define _LTT_TRACER_H
+#include <sys/types.h>
#include <stdarg.h>
-#include <linux/types.h>
-#include <linux/limits.h>
-#include <linux/list.h>
-#include <linux/cache.h>
-#include <linux/kernel.h>
-#include <linux/timex.h>
-#include <linux/wait.h>
-#include <linux/ltt-relay.h>
-#include <linux/ltt-channels.h>
-#include <linux/ltt-core.h>
-#include <linux/marker.h>
-#include <linux/trace-clock.h>
-#include <asm/atomic.h>
-#include <asm/local.h>
+#include "relay.h"
+#include "list.h"
+#include "kernelcompat.h"
+#include "channels.h"
+#include "tracercore.h"
+#include "marker.h"
/* Number of bytes to log with a read/write event */
#define LTT_LOG_RW_SIZE 32L
enum ltt_channels {
LTT_CHANNEL_METADATA,
- LTT_CHANNEL_FD_STATE,
- LTT_CHANNEL_GLOBAL_STATE,
- LTT_CHANNEL_IRQ_STATE,
- LTT_CHANNEL_MODULE_STATE,
- LTT_CHANNEL_NETIF_STATE,
- LTT_CHANNEL_SOFTIRQ_STATE,
- LTT_CHANNEL_SWAP_STATE,
- LTT_CHANNEL_SYSCALL_STATE,
- LTT_CHANNEL_TASK_STATE,
- LTT_CHANNEL_VM_STATE,
- LTT_CHANNEL_FS,
- LTT_CHANNEL_INPUT,
- LTT_CHANNEL_IPC,
- LTT_CHANNEL_KERNEL,
- LTT_CHANNEL_MM,
- LTT_CHANNEL_RCU,
- LTT_CHANNEL_DEFAULT,
+ LTT_CHANNEL_UST,
};
struct ltt_active_marker {
struct ltt_available_probe *probe;
};
+struct marker; //ust//
extern void ltt_vtrace(const struct marker *mdata, void *probe_data,
void *call_data, const char *fmt, va_list *args);
extern void ltt_trace(const struct marker *mdata, void *probe_data,
return MARKER_ID_DYNAMIC;
}
-#ifdef CONFIG_LTT
-
struct user_dbg_data {
unsigned long avail_size;
unsigned long write;
void **transport_data, size_t data_size,
size_t *slot_size, long *buf_offset, u64 *tsc,
unsigned int *rflags,
- int largest_align,
- int cpu);
+ int largest_align);
void (*commit_slot) (struct ltt_channel_struct *channel,
void **transport_data, long buf_offset,
size_t slot_size);
int (*user_blocking) (struct ltt_trace_struct *trace,
unsigned int index, size_t data_size,
struct user_dbg_data *dbg);
- /* End of first 32 bytes cacheline */
- int (*create_dirs) (struct ltt_trace_struct *new_trace);
- void (*remove_dirs) (struct ltt_trace_struct *new_trace);
- int (*create_channel) (const char *trace_name,
- struct ltt_trace_struct *trace,
- struct dentry *dir, const char *channel_name,
- struct ltt_channel_struct *ltt_chan,
- unsigned int subbuf_size,
- unsigned int n_subbufs, int overwrite);
- void (*finish_channel) (struct ltt_channel_struct *channel);
- void (*remove_channel) (struct ltt_channel_struct *channel);
- void (*user_errors) (struct ltt_trace_struct *trace,
- unsigned int index, size_t data_size,
- struct user_dbg_data *dbg, int cpu);
-#ifdef CONFIG_HOTPLUG_CPU
- int (*handle_cpuhp) (struct notifier_block *nb,
- unsigned long action, void *hcpu,
- struct ltt_trace_struct *trace);
-#endif
+ /* End of first 32 bytes cacheline */
+ int (*create_dirs) (struct ltt_trace_struct *new_trace);
+ void (*remove_dirs) (struct ltt_trace_struct *new_trace);
+ int (*create_channel) (const char *trace_name,
+ struct ltt_trace_struct *trace,
+ struct dentry *dir, const char *channel_name,
+ struct ltt_channel_struct *ltt_chan,
+ unsigned int subbuf_size,
+ unsigned int n_subbufs, int overwrite);
+ void (*finish_channel) (struct ltt_channel_struct *channel);
+ void (*remove_channel) (struct ltt_channel_struct *channel);
+ void (*user_errors) (struct ltt_trace_struct *trace,
+ unsigned int index, size_t data_size,
+ struct user_dbg_data *dbg);
} ____cacheline_aligned;
struct ltt_transport {
struct {
struct dentry *trace_root;
} dentry;
- struct rchan_callbacks callbacks;
struct kref kref; /* Each channel has a kref of the trace struct */
struct ltt_transport *transport;
struct kref ltt_transport_kref;
- wait_queue_head_t kref_wq; /* Place for ltt_trace_destroy to sleep */
char trace_name[NAME_MAX];
} ____cacheline_aligned;
size_t orig_offset = offset;
size_t padding;
- BUILD_BUG_ON(sizeof(struct ltt_event_header) != sizeof(u32));
-
padding = ltt_align(offset, sizeof(struct ltt_event_header));
offset += padding;
offset += sizeof(struct ltt_event_header);
long *buf_offset,
u64 *tsc,
unsigned int *rflags,
- int largest_align,
- int cpu)
+ int largest_align)
{
return trace->ops->reserve_slot(trace, channel, transport_data,
data_size, slot_size, buf_offset, tsc, rflags,
- largest_align, cpu);
+ largest_align);
}
* cpu channel :
* cpu
*/
-#define LTT_RELAY_ROOT "ltt"
-#define LTT_RELAY_LOCKED_ROOT "ltt-locked"
#define LTT_METADATA_CHANNEL "metadata_state"
-#define LTT_FD_STATE_CHANNEL "fd_state"
-#define LTT_GLOBAL_STATE_CHANNEL "global_state"
-#define LTT_IRQ_STATE_CHANNEL "irq_state"
-#define LTT_MODULE_STATE_CHANNEL "module_state"
-#define LTT_NETIF_STATE_CHANNEL "netif_state"
-#define LTT_SOFTIRQ_STATE_CHANNEL "softirq_state"
-#define LTT_SWAP_STATE_CHANNEL "swap_state"
-#define LTT_SYSCALL_STATE_CHANNEL "syscall_state"
-#define LTT_TASK_STATE_CHANNEL "task_state"
-#define LTT_VM_STATE_CHANNEL "vm_state"
-#define LTT_FS_CHANNEL "fs"
-#define LTT_INPUT_CHANNEL "input"
-#define LTT_IPC_CHANNEL "ipc"
-#define LTT_KERNEL_CHANNEL "kernel"
-#define LTT_MM_CHANNEL "mm"
-#define LTT_RCU_CHANNEL "rcu"
+#define LTT_UST_CHANNEL "ust"
#define LTT_FLIGHT_PREFIX "flight-"
/* Tracer properties */
-#define LTT_DEFAULT_SUBBUF_SIZE_LOW 65536
+//#define LTT_DEFAULT_SUBBUF_SIZE_LOW 65536
+#define LTT_DEFAULT_SUBBUF_SIZE_LOW 4096
#define LTT_DEFAULT_N_SUBBUFS_LOW 2
-#define LTT_DEFAULT_SUBBUF_SIZE_MED 262144
+//#define LTT_DEFAULT_SUBBUF_SIZE_MED 262144
+#define LTT_DEFAULT_SUBBUF_SIZE_MED 4096
#define LTT_DEFAULT_N_SUBBUFS_MED 2
-#define LTT_DEFAULT_SUBBUF_SIZE_HIGH 1048576
+//#define LTT_DEFAULT_SUBBUF_SIZE_HIGH 1048576
+#define LTT_DEFAULT_SUBBUF_SIZE_HIGH 4096
#define LTT_DEFAULT_N_SUBBUFS_HIGH 2
#define LTT_TRACER_MAGIC_NUMBER 0x00D6B7ED
#define LTT_TRACER_VERSION_MAJOR 2
LTT_FUNCTION_STATEDUMP
};
-extern int ltt_module_register(enum ltt_module_function name, void *function,
- struct module *owner);
-extern void ltt_module_unregister(enum ltt_module_function name);
-
void ltt_transport_register(struct ltt_transport *transport);
void ltt_transport_unregister(struct ltt_transport *transport);
/* Exported control function */
-enum ltt_control_msg {
- LTT_CONTROL_START,
- LTT_CONTROL_STOP,
- LTT_CONTROL_CREATE_TRACE,
- LTT_CONTROL_DESTROY_TRACE
-};
-
union ltt_control_args {
struct {
enum trace_mode mode;
int ltt_trace_start(const char *trace_name);
int ltt_trace_stop(const char *trace_name);
-extern int ltt_control(enum ltt_control_msg msg, const char *trace_name,
- const char *trace_type, union ltt_control_args args);
-
enum ltt_filter_control_msg {
LTT_FILTER_DEFAULT_ACCEPT,
LTT_FILTER_DEFAULT_REJECT
void ltt_lock_traces(void);
void ltt_unlock_traces(void);
-extern void ltt_dump_softirq_vec(void *call_data);
-
-#ifdef CONFIG_HAVE_LTT_DUMP_TABLES
-extern void ltt_dump_sys_call_table(void *call_data);
-extern void ltt_dump_idt_table(void *call_data);
-#else
-static inline void ltt_dump_sys_call_table(void *call_data)
-{
-}
-
-static inline void ltt_dump_idt_table(void *call_data)
-{
-}
-#endif
-
-#ifdef CONFIG_LTT_KPROBES
-extern void ltt_dump_kprobes_table(void *call_data);
-#else
-static inline void ltt_dump_kprobes_table(void *call_data)
-{
-}
-#endif
-
-/* Relay IOCTL */
-
-/* Get the next sub buffer that can be read. */
-#define RELAY_GET_SUBBUF _IOR(0xF5, 0x00, __u32)
-/* Release the oldest reserved (by "get") sub buffer. */
-#define RELAY_PUT_SUBBUF _IOW(0xF5, 0x01, __u32)
-/* returns the number of sub buffers in the per cpu channel. */
-#define RELAY_GET_N_SUBBUFS _IOR(0xF5, 0x02, __u32)
-/* returns the size of the sub buffers. */
-#define RELAY_GET_SUBBUF_SIZE _IOR(0xF5, 0x03, __u32)
-
-#endif /* CONFIG_LTT */
+struct ltt_trace_struct *_ltt_trace_find(const char *trace_name);
#endif /* _LTT_TRACER_H */
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