112 lines
3.2 KiB
C
112 lines
3.2 KiB
C
/*
|
|
* thread-stack.h: Synthesize a thread's stack using call / return events
|
|
* Copyright (c) 2014, Intel Corporation.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms and conditions of the GNU General Public License,
|
|
* version 2, as published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope it will be useful, but WITHOUT
|
|
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
|
|
* more details.
|
|
*
|
|
*/
|
|
|
|
#ifndef __PERF_THREAD_STACK_H
|
|
#define __PERF_THREAD_STACK_H
|
|
|
|
#include <sys/types.h>
|
|
|
|
#include <linux/types.h>
|
|
#include <linux/rbtree.h>
|
|
|
|
struct thread;
|
|
struct comm;
|
|
struct ip_callchain;
|
|
struct symbol;
|
|
struct dso;
|
|
struct call_return_processor;
|
|
struct comm;
|
|
struct perf_sample;
|
|
struct addr_location;
|
|
|
|
/*
|
|
* Call/Return flags.
|
|
*
|
|
* CALL_RETURN_NO_CALL: 'return' but no matching 'call'
|
|
* CALL_RETURN_NO_RETURN: 'call' but no matching 'return'
|
|
*/
|
|
enum {
|
|
CALL_RETURN_NO_CALL = 1 << 0,
|
|
CALL_RETURN_NO_RETURN = 1 << 1,
|
|
};
|
|
|
|
/**
|
|
* struct call_return - paired call/return information.
|
|
* @thread: thread in which call/return occurred
|
|
* @comm: comm in which call/return occurred
|
|
* @cp: call path
|
|
* @call_time: timestamp of call (if known)
|
|
* @return_time: timestamp of return (if known)
|
|
* @branch_count: number of branches seen between call and return
|
|
* @call_ref: external reference to 'call' sample (e.g. db_id)
|
|
* @return_ref: external reference to 'return' sample (e.g. db_id)
|
|
* @db_id: id used for db-export
|
|
* @flags: Call/Return flags
|
|
*/
|
|
struct call_return {
|
|
struct thread *thread;
|
|
struct comm *comm;
|
|
struct call_path *cp;
|
|
u64 call_time;
|
|
u64 return_time;
|
|
u64 branch_count;
|
|
u64 call_ref;
|
|
u64 return_ref;
|
|
u64 db_id;
|
|
u32 flags;
|
|
};
|
|
|
|
/**
|
|
* struct call_path - node in list of calls leading to a function call.
|
|
* @parent: call path to the parent function call
|
|
* @sym: symbol of function called
|
|
* @ip: only if sym is null, the ip of the function
|
|
* @db_id: id used for db-export
|
|
* @in_kernel: whether function is a in the kernel
|
|
* @rb_node: node in parent's tree of called functions
|
|
* @children: tree of call paths of functions called
|
|
*
|
|
* In combination with the call_return structure, the call_path structure
|
|
* defines a context-sensitve call-graph.
|
|
*/
|
|
struct call_path {
|
|
struct call_path *parent;
|
|
struct symbol *sym;
|
|
u64 ip;
|
|
u64 db_id;
|
|
bool in_kernel;
|
|
struct rb_node rb_node;
|
|
struct rb_root children;
|
|
};
|
|
|
|
int thread_stack__event(struct thread *thread, u32 flags, u64 from_ip,
|
|
u64 to_ip, u16 insn_len, u64 trace_nr);
|
|
void thread_stack__set_trace_nr(struct thread *thread, u64 trace_nr);
|
|
void thread_stack__sample(struct thread *thread, struct ip_callchain *chain,
|
|
size_t sz, u64 ip);
|
|
void thread_stack__free(struct thread *thread);
|
|
|
|
struct call_return_processor *
|
|
call_return_processor__new(int (*process)(struct call_return *cr, void *data),
|
|
void *data);
|
|
void call_return_processor__free(struct call_return_processor *crp);
|
|
int thread_stack__process(struct thread *thread, struct comm *comm,
|
|
struct perf_sample *sample,
|
|
struct addr_location *from_al,
|
|
struct addr_location *to_al, u64 ref,
|
|
struct call_return_processor *crp);
|
|
|
|
#endif
|