cregit-Linux how code gets into the kernel

Release 4.10 tools/perf/util/call-path.h

Directory: tools/perf/util
 * call-path.h: Manipulate a tree data structure containing function call paths
 * 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_CALL_PATH_H

#define __PERF_CALL_PATH_H

#include <sys/types.h>

#include <linux/types.h>
#include <linux/rbtree.h>

 * 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;




struct call_path_block {
struct call_path cp[CALL_PATH_BLOCK_SIZE];
struct list_head node;

 * struct call_path_root - root of all call paths.
 * @call_path: root call path
 * @blocks: list of blocks to store call paths
 * @next: next free space
 * @sz: number of spaces

struct call_path_root {
struct call_path call_path;
struct list_head blocks;
size_t next;
size_t sz;

struct call_path_root *call_path_root__new(void);
void call_path_root__free(struct call_path_root *cpr);

struct call_path *call_path__findnew(struct call_path_root *cpr,
				     struct call_path *parent,
				     struct symbol *sym, u64 ip, u64 ks);


Overall Contributors

chris phlipotchris phlipot143100.00%1100.00%
Directory: tools/perf/util
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