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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 | /* 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 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 * @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 |