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110 lines
3.5 KiB
110 lines
3.5 KiB
/* SPDX-License-Identifier: GPL-2.0-only */ |
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/* |
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* thread-stack.h: Synthesize a thread's stack using call / return events |
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* Copyright (c) 2014, Intel Corporation. |
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*/ |
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#ifndef __PERF_THREAD_STACK_H |
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#define __PERF_THREAD_STACK_H |
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#include <sys/types.h> |
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#include <linux/types.h> |
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struct thread; |
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struct comm; |
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struct ip_callchain; |
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struct symbol; |
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struct dso; |
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struct perf_sample; |
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struct addr_location; |
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struct call_path; |
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/* |
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* Call/Return flags. |
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* |
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* CALL_RETURN_NO_CALL: 'return' but no matching 'call' |
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* CALL_RETURN_NO_RETURN: 'call' but no matching 'return' |
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* CALL_RETURN_NON_CALL: a branch but not a 'call' to the start of a different |
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* symbol |
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*/ |
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enum { |
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CALL_RETURN_NO_CALL = 1 << 0, |
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CALL_RETURN_NO_RETURN = 1 << 1, |
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CALL_RETURN_NON_CALL = 1 << 2, |
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}; |
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/** |
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* struct call_return - paired call/return information. |
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* @thread: thread in which call/return occurred |
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* @comm: comm in which call/return occurred |
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* @cp: call path |
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* @call_time: timestamp of call (if known) |
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* @return_time: timestamp of return (if known) |
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* @branch_count: number of branches seen between call and return |
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* @insn_count: approx. number of instructions between call and return |
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* @cyc_count: approx. number of cycles between call and return |
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* @call_ref: external reference to 'call' sample (e.g. db_id) |
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* @return_ref: external reference to 'return' sample (e.g. db_id) |
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* @db_id: id used for db-export |
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* @parent_db_id: id of parent call used for db-export |
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* @flags: Call/Return flags |
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*/ |
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struct call_return { |
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struct thread *thread; |
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struct comm *comm; |
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struct call_path *cp; |
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u64 call_time; |
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u64 return_time; |
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u64 branch_count; |
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u64 insn_count; |
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u64 cyc_count; |
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u64 call_ref; |
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u64 return_ref; |
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u64 db_id; |
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u64 parent_db_id; |
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u32 flags; |
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}; |
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/** |
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* struct call_return_processor - provides a call-back to consume call-return |
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* information. |
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* @cpr: call path root |
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* @process: call-back that accepts call/return information |
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* @data: anonymous data for call-back |
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*/ |
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struct call_return_processor { |
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struct call_path_root *cpr; |
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int (*process)(struct call_return *cr, u64 *parent_db_id, void *data); |
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void *data; |
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}; |
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int thread_stack__event(struct thread *thread, int cpu, u32 flags, u64 from_ip, |
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u64 to_ip, u16 insn_len, u64 trace_nr, bool callstack, |
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unsigned int br_stack_sz, bool mispred_all); |
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void thread_stack__set_trace_nr(struct thread *thread, int cpu, u64 trace_nr); |
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void thread_stack__sample(struct thread *thread, int cpu, struct ip_callchain *chain, |
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size_t sz, u64 ip, u64 kernel_start); |
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void thread_stack__sample_late(struct thread *thread, int cpu, |
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struct ip_callchain *chain, size_t sz, u64 ip, |
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u64 kernel_start); |
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void thread_stack__br_sample(struct thread *thread, int cpu, |
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struct branch_stack *dst, unsigned int sz); |
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void thread_stack__br_sample_late(struct thread *thread, int cpu, |
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struct branch_stack *dst, unsigned int sz, |
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u64 sample_ip, u64 kernel_start); |
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int thread_stack__flush(struct thread *thread); |
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void thread_stack__free(struct thread *thread); |
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size_t thread_stack__depth(struct thread *thread, int cpu); |
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struct call_return_processor * |
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call_return_processor__new(int (*process)(struct call_return *cr, u64 *parent_db_id, void *data), |
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void *data); |
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void call_return_processor__free(struct call_return_processor *crp); |
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int thread_stack__process(struct thread *thread, struct comm *comm, |
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struct perf_sample *sample, |
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struct addr_location *from_al, |
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struct addr_location *to_al, u64 ref, |
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struct call_return_processor *crp); |
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#endif
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