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1/* SPDX-License-Identifier: GPL-2.0-only */2/*3 * thread-stack.h: Synthesize a thread's stack using call / return events4 * Copyright (c) 2014, Intel Corporation.5 */6 7#ifndef __PERF_THREAD_STACK_H8#define __PERF_THREAD_STACK_H9 10#include <sys/types.h>11 12#include <linux/types.h>13 14struct thread;15struct comm;16struct ip_callchain;17struct symbol;18struct dso;19struct perf_sample;20struct addr_location;21struct call_path;22 23/*24 * Call/Return flags.25 *26 * CALL_RETURN_NO_CALL: 'return' but no matching 'call'27 * CALL_RETURN_NO_RETURN: 'call' but no matching 'return'28 * CALL_RETURN_NON_CALL: a branch but not a 'call' to the start of a different29 * symbol30 */31enum {32 CALL_RETURN_NO_CALL = 1 << 0,33 CALL_RETURN_NO_RETURN = 1 << 1,34 CALL_RETURN_NON_CALL = 1 << 2,35};36 37/**38 * struct call_return - paired call/return information.39 * @thread: thread in which call/return occurred40 * @comm: comm in which call/return occurred41 * @cp: call path42 * @call_time: timestamp of call (if known)43 * @return_time: timestamp of return (if known)44 * @branch_count: number of branches seen between call and return45 * @insn_count: approx. number of instructions between call and return46 * @cyc_count: approx. number of cycles between call and return47 * @call_ref: external reference to 'call' sample (e.g. db_id)48 * @return_ref: external reference to 'return' sample (e.g. db_id)49 * @db_id: id used for db-export50 * @parent_db_id: id of parent call used for db-export51 * @flags: Call/Return flags52 */53struct call_return {54 struct thread *thread;55 struct comm *comm;56 struct call_path *cp;57 u64 call_time;58 u64 return_time;59 u64 branch_count;60 u64 insn_count;61 u64 cyc_count;62 u64 call_ref;63 u64 return_ref;64 u64 db_id;65 u64 parent_db_id;66 u32 flags;67};68 69/**70 * struct call_return_processor - provides a call-back to consume call-return71 * information.72 * @cpr: call path root73 * @process: call-back that accepts call/return information74 * @data: anonymous data for call-back75 */76struct call_return_processor {77 struct call_path_root *cpr;78 int (*process)(struct call_return *cr, u64 *parent_db_id, void *data);79 void *data;80};81 82int thread_stack__event(struct thread *thread, int cpu, u32 flags, u64 from_ip,83 u64 to_ip, u16 insn_len, u64 trace_nr, bool callstack,84 unsigned int br_stack_sz, bool mispred_all);85void thread_stack__set_trace_nr(struct thread *thread, int cpu, u64 trace_nr);86void thread_stack__sample(struct thread *thread, int cpu, struct ip_callchain *chain,87 size_t sz, u64 ip, u64 kernel_start);88void thread_stack__sample_late(struct thread *thread, int cpu,89 struct ip_callchain *chain, size_t sz, u64 ip,90 u64 kernel_start);91void thread_stack__br_sample(struct thread *thread, int cpu,92 struct branch_stack *dst, unsigned int sz);93void thread_stack__br_sample_late(struct thread *thread, int cpu,94 struct branch_stack *dst, unsigned int sz,95 u64 sample_ip, u64 kernel_start);96int thread_stack__flush(struct thread *thread);97void thread_stack__free(struct thread *thread);98size_t thread_stack__depth(struct thread *thread, int cpu);99 100struct call_return_processor *101call_return_processor__new(int (*process)(struct call_return *cr, u64 *parent_db_id, void *data),102 void *data);103void call_return_processor__free(struct call_return_processor *crp);104int thread_stack__process(struct thread *thread, struct comm *comm,105 struct perf_sample *sample,106 struct addr_location *from_al,107 struct addr_location *to_al, u64 ref,108 struct call_return_processor *crp);109 110#endif111