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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111/* SPDX-License-Identifier: GPL-2.0-only *//* * thread-stack.h: Synthesize a thread's stack using call / return events * Copyright (c) 2014, Intel Corporation. */
#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 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 * @insn_count: approx. number of instructions between call and return * @cyc_count: approx. number of cycles 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 insn_count; u64 cyc_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, bool callstack, unsigned int br_stack_sz, bool mispred_all);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);void thread_stack__sample_late(struct thread *thread, int cpu, struct ip_callchain *chain, size_t sz, u64 ip, u64 kernel_start);void thread_stack__br_sample(struct thread *thread, int cpu, struct branch_stack *dst, unsigned int sz);void thread_stack__br_sample_late(struct thread *thread, int cpu, struct branch_stack *dst, unsigned int sz, u64 sample_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