#include <linux/sched.h>
#include <linux/clocksource.h>
+enum trace_type {
+ __TRACE_FIRST_TYPE = 0,
+
+ TRACE_FN,
+ TRACE_CTX,
+ TRACE_WAKE,
+ TRACE_STACK,
+ TRACE_SPECIAL,
+
+ __TRACE_LAST_TYPE
+};
+
/*
* Function trace entry - function address and parent function addres:
*/
unsigned char prev_state;
unsigned int next_pid;
unsigned char next_prio;
+ unsigned char next_state;
+};
+
+/*
+ * Special (free-form) trace entry:
+ */
+struct special_entry {
+ unsigned long arg1;
+ unsigned long arg2;
+ unsigned long arg3;
+};
+
+/*
+ * Stack-trace entry:
+ */
+
+#define FTRACE_STACK_ENTRIES 8
+
+struct stack_entry {
+ unsigned long caller[FTRACE_STACK_ENTRIES];
};
/*
char preempt_count;
int pid;
cycle_t t;
- unsigned long idx;
union {
struct ftrace_entry fn;
struct ctx_switch_entry ctx;
+ struct special_entry special;
+ struct stack_entry stack;
};
};
struct trace_array_cpu {
struct list_head trace_pages;
atomic_t disabled;
- cycle_t time_offset;
+ raw_spinlock_t lock;
+ struct lock_class_key lock_key;
/* these fields get copied into max-trace: */
unsigned trace_head_idx;
void *trace_head; /* producer */
void *trace_tail; /* consumer */
unsigned long trace_idx;
+ unsigned long overrun;
unsigned long saved_latency;
unsigned long critical_start;
unsigned long critical_end;
long ctrl;
int cpu;
cycle_t time_start;
+ struct task_struct *waiter;
struct trace_array_cpu *data[NR_CPUS];
};
void (*init)(struct trace_array *tr);
void (*reset)(struct trace_array *tr);
void (*open)(struct trace_iterator *iter);
+ void (*pipe_open)(struct trace_iterator *iter);
void (*close)(struct trace_iterator *iter);
void (*start)(struct trace_iterator *iter);
void (*stop)(struct trace_iterator *iter);
+ ssize_t (*read)(struct trace_iterator *iter,
+ struct file *filp, char __user *ubuf,
+ size_t cnt, loff_t *ppos);
void (*ctrl_update)(struct trace_array *tr);
#ifdef CONFIG_FTRACE_STARTUP_TEST
int (*selftest)(struct tracer *trace,
struct trace_array *tr);
#endif
+ int (*print_line)(struct trace_iterator *iter);
struct tracer *next;
int print_max;
};
struct trace_seq {
unsigned char buffer[PAGE_SIZE];
unsigned int len;
+ unsigned int readpos;
};
/*
* results to users and which routines might sleep, etc:
*/
struct trace_iterator {
- struct trace_seq seq;
struct trace_array *tr;
struct tracer *trace;
+ void *private;
+ long last_overrun[NR_CPUS];
+ long overrun[NR_CPUS];
+ /* The below is zeroed out in pipe_read */
+ struct trace_seq seq;
struct trace_entry *ent;
int cpu;
long idx;
};
-void notrace tracing_reset(struct trace_array_cpu *data);
+void tracing_reset(struct trace_array_cpu *data);
int tracing_open_generic(struct inode *inode, struct file *filp);
struct dentry *tracing_init_dentry(void);
void ftrace(struct trace_array *tr,
unsigned long flags);
void tracing_record_cmdline(struct task_struct *tsk);
+void tracing_sched_wakeup_trace(struct trace_array *tr,
+ struct trace_array_cpu *data,
+ struct task_struct *wakee,
+ struct task_struct *cur,
+ unsigned long flags);
+void trace_special(struct trace_array *tr,
+ struct trace_array_cpu *data,
+ unsigned long arg1,
+ unsigned long arg2,
+ unsigned long arg3);
+void trace_function(struct trace_array *tr,
+ struct trace_array_cpu *data,
+ unsigned long ip,
+ unsigned long parent_ip,
+ unsigned long flags);
+
void tracing_start_function_trace(void);
void tracing_stop_function_trace(void);
int register_tracer(struct tracer *type);
extern unsigned long tracing_max_latency;
extern unsigned long tracing_thresh;
+extern atomic_t trace_record_cmdline_enabled;
+
void update_max_tr(struct trace_array *tr, struct task_struct *tsk, int cpu);
void update_max_tr_single(struct trace_array *tr,
struct task_struct *tsk, int cpu);
-static inline notrace cycle_t now(int cpu)
-{
- return cpu_clock(cpu);
-}
-
-#ifdef CONFIG_SCHED_TRACER
-extern void notrace
-wakeup_sched_switch(struct task_struct *prev, struct task_struct *next);
-#else
-static inline void
-wakeup_sched_switch(struct task_struct *prev, struct task_struct *next)
-{
-}
-#endif
+extern cycle_t ftrace_now(int cpu);
#ifdef CONFIG_CONTEXT_SWITCH_TRACER
typedef void
(*tracer_switch_func_t)(void *private,
+ void *__rq,
struct task_struct *prev,
struct task_struct *next);
struct tracer_switch_ops *next;
};
-extern int register_tracer_switch(struct tracer_switch_ops *ops);
-extern int unregister_tracer_switch(struct tracer_switch_ops *ops);
-
#endif /* CONFIG_CONTEXT_SWITCH_TRACER */
#ifdef CONFIG_DYNAMIC_FTRACE
extern unsigned long ftrace_update_tot_cnt;
+#define DYN_FTRACE_TEST_NAME trace_selftest_dynamic_test_func
+extern int DYN_FTRACE_TEST_NAME(void);
#endif
#ifdef CONFIG_FTRACE_STARTUP_TEST
#endif /* CONFIG_FTRACE_STARTUP_TEST */
extern void *head_page(struct trace_array_cpu *data);
+extern int trace_seq_printf(struct trace_seq *s, const char *fmt, ...);
+extern ssize_t trace_seq_to_user(struct trace_seq *s, char __user *ubuf,
+ size_t cnt);
+extern long ns2usecs(cycle_t nsec);
+
+extern unsigned long trace_flags;
+
+/*
+ * trace_iterator_flags is an enumeration that defines bit
+ * positions into trace_flags that controls the output.
+ *
+ * NOTE: These bits must match the trace_options array in
+ * trace.c.
+ */
+enum trace_iterator_flags {
+ TRACE_ITER_PRINT_PARENT = 0x01,
+ TRACE_ITER_SYM_OFFSET = 0x02,
+ TRACE_ITER_SYM_ADDR = 0x04,
+ TRACE_ITER_VERBOSE = 0x08,
+ TRACE_ITER_RAW = 0x10,
+ TRACE_ITER_HEX = 0x20,
+ TRACE_ITER_BIN = 0x40,
+ TRACE_ITER_BLOCK = 0x80,
+ TRACE_ITER_STACKTRACE = 0x100,
+ TRACE_ITER_SCHED_TREE = 0x200,
+};
#endif /* _LINUX_KERNEL_TRACE_H */
projects / mv-sheeva.git / blobdiff