| /* |
| * 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> |
| |
| struct thread; |
| struct comm; |
| struct ip_callchain; |
| struct symbol; |
| struct dso; |
| struct comm; |
| struct perf_sample; |
| struct addr_location; |
| struct call_path; |
| |
| /* |
| * Call/Return flags. |
| * |
| * CALL_RETURN_NO_CALL: 'return' but no matching 'call' |
| * CALL_RETURN_NO_RETURN: 'call' but no matching 'return' |
| * CALL_RETURN_NON_CALL: a branch but not a 'call' to the start of a different |
| * symbol |
| */ |
| enum { |
| CALL_RETURN_NO_CALL = 1 << 0, |
| CALL_RETURN_NO_RETURN = 1 << 1, |
| CALL_RETURN_NON_CALL = 1 << 2, |
| }; |
| |
| /** |
| * 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 |
| * @parent_db_id: id of parent call 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; |
| u64 parent_db_id; |
| u32 flags; |
| }; |
| |
| /** |
| * struct call_return_processor - provides a call-back to consume call-return |
| * information. |
| * @cpr: call path root |
| * @process: call-back that accepts call/return information |
| * @data: anonymous data for call-back |
| */ |
| struct call_return_processor { |
| struct call_path_root *cpr; |
| int (*process)(struct call_return *cr, u64 *parent_db_id, void *data); |
| void *data; |
| }; |
| |
| int thread_stack__event(struct thread *thread, int cpu, u32 flags, u64 from_ip, |
| u64 to_ip, u16 insn_len, u64 trace_nr); |
| void thread_stack__set_trace_nr(struct thread *thread, int cpu, u64 trace_nr); |
| void thread_stack__sample(struct thread *thread, int cpu, struct ip_callchain *chain, |
| size_t sz, u64 ip, u64 kernel_start); |
| int thread_stack__flush(struct thread *thread); |
| void thread_stack__free(struct thread *thread); |
| size_t thread_stack__depth(struct thread *thread, int cpu); |
| |
| struct call_return_processor * |
| call_return_processor__new(int (*process)(struct call_return *cr, u64 *parent_db_id, 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 |