diff options
Diffstat (limited to 'include/linux/ftrace.h')
| -rw-r--r-- | include/linux/ftrace.h | 57 |
1 files changed, 22 insertions, 35 deletions
diff --git a/include/linux/ftrace.h b/include/linux/ftrace.h index dd16e8218db3..20899919ead8 100644 --- a/include/linux/ftrace.h +++ b/include/linux/ftrace.h @@ -241,21 +241,11 @@ static inline void ftrace_free_mem(struct module *mod, void *start, void *end) { #ifdef CONFIG_STACK_TRACER -#define STACK_TRACE_ENTRIES 500 - -struct stack_trace; - -extern unsigned stack_trace_index[]; -extern struct stack_trace stack_trace_max; -extern unsigned long stack_trace_max_size; -extern arch_spinlock_t stack_trace_max_lock; - extern int stack_tracer_enabled; -void stack_trace_print(void); -int -stack_trace_sysctl(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, - loff_t *ppos); + +int stack_trace_sysctl(struct ctl_table *table, int write, + void __user *buffer, size_t *lenp, + loff_t *ppos); /* DO NOT MODIFY THIS VARIABLE DIRECTLY! */ DECLARE_PER_CPU(int, disable_stack_tracer); @@ -389,6 +379,7 @@ enum { FTRACE_UPDATE_TRACE_FUNC = (1 << 2), FTRACE_START_FUNC_RET = (1 << 3), FTRACE_STOP_FUNC_RET = (1 << 4), + FTRACE_MAY_SLEEP = (1 << 5), }; /* @@ -420,6 +411,9 @@ enum { }; void arch_ftrace_update_code(int command); +void arch_ftrace_update_trampoline(struct ftrace_ops *ops); +void *arch_ftrace_trampoline_func(struct ftrace_ops *ops, struct dyn_ftrace *rec); +void arch_ftrace_trampoline_free(struct ftrace_ops *ops); struct ftrace_rec_iter; @@ -749,6 +743,11 @@ typedef int (*trace_func_graph_ent_t)(struct ftrace_graph_ent *); /* entry */ #ifdef CONFIG_FUNCTION_GRAPH_TRACER +struct fgraph_ops { + trace_func_graph_ent_t entryfunc; + trace_func_graph_ret_t retfunc; +}; + /* * Stack of return addresses for functions * of a thread. @@ -780,6 +779,9 @@ extern int function_graph_enter(unsigned long ret, unsigned long func, unsigned long frame_pointer, unsigned long *retp); +struct ftrace_ret_stack * +ftrace_graph_get_ret_stack(struct task_struct *task, int idx); + unsigned long ftrace_graph_ret_addr(struct task_struct *task, int *idx, unsigned long ret, unsigned long *retp); @@ -790,11 +792,11 @@ unsigned long ftrace_graph_ret_addr(struct task_struct *task, int *idx, */ #define __notrace_funcgraph notrace -#define FTRACE_NOTRACE_DEPTH 65536 #define FTRACE_RETFUNC_DEPTH 50 #define FTRACE_RETSTACK_ALLOC_SIZE 32 -extern int register_ftrace_graph(trace_func_graph_ret_t retfunc, - trace_func_graph_ent_t entryfunc); + +extern int register_ftrace_graph(struct fgraph_ops *ops); +extern void unregister_ftrace_graph(struct fgraph_ops *ops); extern bool ftrace_graph_is_dead(void); extern void ftrace_graph_stop(void); @@ -803,17 +805,10 @@ extern void ftrace_graph_stop(void); extern trace_func_graph_ret_t ftrace_graph_return; extern trace_func_graph_ent_t ftrace_graph_entry; -extern void unregister_ftrace_graph(void); - extern void ftrace_graph_init_task(struct task_struct *t); extern void ftrace_graph_exit_task(struct task_struct *t); extern void ftrace_graph_init_idle_task(struct task_struct *t, int cpu); -static inline int task_curr_ret_stack(struct task_struct *t) -{ - return t->curr_ret_stack; -} - static inline void pause_graph_tracing(void) { atomic_inc(¤t->tracing_graph_pause); @@ -831,17 +826,9 @@ static inline void ftrace_graph_init_task(struct task_struct *t) { } static inline void ftrace_graph_exit_task(struct task_struct *t) { } static inline void ftrace_graph_init_idle_task(struct task_struct *t, int cpu) { } -static inline int register_ftrace_graph(trace_func_graph_ret_t retfunc, - trace_func_graph_ent_t entryfunc) -{ - return -1; -} -static inline void unregister_ftrace_graph(void) { } - -static inline int task_curr_ret_stack(struct task_struct *tsk) -{ - return -1; -} +/* Define as macros as fgraph_ops may not be defined */ +#define register_ftrace_graph(ops) ({ -1; }) +#define unregister_ftrace_graph(ops) do { } while (0) static inline unsigned long ftrace_graph_ret_addr(struct task_struct *task, int *idx, unsigned long ret, |