Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) /* SPDX-License-Identifier: GPL-2.0-only */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3)  * call-path.h: Manipulate a tree data structure containing function call paths
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4)  * Copyright (c) 2014, Intel Corporation.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7) #ifndef __PERF_CALL_PATH_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8) #define __PERF_CALL_PATH_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <sys/types.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/types.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/rbtree.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16)  * struct call_path - node in list of calls leading to a function call.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17)  * @parent: call path to the parent function call
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18)  * @sym: symbol of function called
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19)  * @ip: only if sym is null, the ip of the function
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20)  * @db_id: id used for db-export
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21)  * @in_kernel: whether function is a in the kernel
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22)  * @rb_node: node in parent's tree of called functions
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23)  * @children: tree of call paths of functions called
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25)  * In combination with the call_return structure, the call_path structure
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26)  * defines a context-sensitve call-graph.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) struct call_path {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) 	struct call_path *parent;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) 	struct symbol *sym;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) 	u64 ip;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) 	u64 db_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) 	bool in_kernel;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) 	struct rb_node rb_node;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) 	struct rb_root children;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) #define CALL_PATH_BLOCK_SHIFT 8
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) #define CALL_PATH_BLOCK_SIZE (1 << CALL_PATH_BLOCK_SHIFT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) #define CALL_PATH_BLOCK_MASK (CALL_PATH_BLOCK_SIZE - 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) struct call_path_block {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) 	struct call_path cp[CALL_PATH_BLOCK_SIZE];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) 	struct list_head node;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48)  * struct call_path_root - root of all call paths.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49)  * @call_path: root call path
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50)  * @blocks: list of blocks to store call paths
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51)  * @next: next free space
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52)  * @sz: number of spaces
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) struct call_path_root {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) 	struct call_path call_path;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) 	struct list_head blocks;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) 	size_t next;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) 	size_t sz;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) struct call_path_root *call_path_root__new(void);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) void call_path_root__free(struct call_path_root *cpr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) struct call_path *call_path__findnew(struct call_path_root *cpr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) 				     struct call_path *parent,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) 				     struct symbol *sym, u64 ip, u64 ks);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) #endif