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files >> //usr/include/perf/perf_dlfilter.h
/* SPDX-License-Identifier: GPL-2.0 */ /* * perf_dlfilter.h: API for perf --dlfilter shared object * Copyright (c) 2021, Intel Corporation. */ #ifndef _LINUX_PERF_DLFILTER_H #define _LINUX_PERF_DLFILTER_H #include <linux/perf_event.h> #include <linux/types.h> /* Definitions for perf_dlfilter_sample flags */ enum { PERF_DLFILTER_FLAG_BRANCH = 1ULL << 0, PERF_DLFILTER_FLAG_CALL = 1ULL << 1, PERF_DLFILTER_FLAG_RETURN = 1ULL << 2, PERF_DLFILTER_FLAG_CONDITIONAL = 1ULL << 3, PERF_DLFILTER_FLAG_SYSCALLRET = 1ULL << 4, PERF_DLFILTER_FLAG_ASYNC = 1ULL << 5, PERF_DLFILTER_FLAG_INTERRUPT = 1ULL << 6, PERF_DLFILTER_FLAG_TX_ABORT = 1ULL << 7, PERF_DLFILTER_FLAG_TRACE_BEGIN = 1ULL << 8, PERF_DLFILTER_FLAG_TRACE_END = 1ULL << 9, PERF_DLFILTER_FLAG_IN_TX = 1ULL << 10, PERF_DLFILTER_FLAG_VMENTRY = 1ULL << 11, PERF_DLFILTER_FLAG_VMEXIT = 1ULL << 12, }; /* * perf sample event information (as per perf script and <linux/perf_event.h>) */ struct perf_dlfilter_sample { __u32 size; /* Size of this structure (for compatibility checking) */ __u16 ins_lat; /* Refer PERF_SAMPLE_WEIGHT_TYPE in <linux/perf_event.h> */ __u16 p_stage_cyc; /* Refer PERF_SAMPLE_WEIGHT_TYPE in <linux/perf_event.h> */ __u64 ip; __s32 pid; __s32 tid; __u64 time; __u64 addr; __u64 id; __u64 stream_id; __u64 period; __u64 weight; /* Refer PERF_SAMPLE_WEIGHT_TYPE in <linux/perf_event.h> */ __u64 transaction; /* Refer PERF_SAMPLE_TRANSACTION in <linux/perf_event.h> */ __u64 insn_cnt; /* For instructions-per-cycle (IPC) */ __u64 cyc_cnt; /* For instructions-per-cycle (IPC) */ __s32 cpu; __u32 flags; /* Refer PERF_DLFILTER_FLAG_* above */ __u64 data_src; /* Refer PERF_SAMPLE_DATA_SRC in <linux/perf_event.h> */ __u64 phys_addr; /* Refer PERF_SAMPLE_PHYS_ADDR in <linux/perf_event.h> */ __u64 data_page_size; /* Refer PERF_SAMPLE_DATA_PAGE_SIZE in <linux/perf_event.h> */ __u64 code_page_size; /* Refer PERF_SAMPLE_CODE_PAGE_SIZE in <linux/perf_event.h> */ __u64 cgroup; /* Refer PERF_SAMPLE_CGROUP in <linux/perf_event.h> */ __u8 cpumode; /* Refer CPUMODE_MASK etc in <linux/perf_event.h> */ __u8 addr_correlates_sym; /* True => resolve_addr() can be called */ __u16 misc; /* Refer perf_event_header in <linux/perf_event.h> */ __u32 raw_size; /* Refer PERF_SAMPLE_RAW in <linux/perf_event.h> */ const void *raw_data; /* Refer PERF_SAMPLE_RAW in <linux/perf_event.h> */ __u64 brstack_nr; /* Number of brstack entries */ const struct perf_branch_entry *brstack; /* Refer <linux/perf_event.h> */ __u64 raw_callchain_nr; /* Number of raw_callchain entries */ const __u64 *raw_callchain; /* Refer <linux/perf_event.h> */ const char *event; }; /* * Address location (as per perf script) */ struct perf_dlfilter_al { __u32 size; /* Size of this structure (for compatibility checking) */ __u32 symoff; const char *sym; __u64 addr; /* Mapped address (from dso) */ __u64 sym_start; __u64 sym_end; const char *dso; __u8 sym_binding; /* STB_LOCAL, STB_GLOBAL or STB_WEAK, refer <elf.h> */ __u8 is_64_bit; /* Only valid if dso is not NULL */ __u8 is_kernel_ip; /* True if in kernel space */ __u32 buildid_size; __u8 *buildid; /* Below members are only populated by resolve_ip() */ __u8 filtered; /* True if this sample event will be filtered out */ const char *comm; }; struct perf_dlfilter_fns { /* Return information about ip */ const struct perf_dlfilter_al *(*resolve_ip)(void *ctx); /* Return information about addr (if addr_correlates_sym) */ const struct perf_dlfilter_al *(*resolve_addr)(void *ctx); /* Return arguments from --dlarg option */ char **(*args)(void *ctx, int *dlargc); /* * Return information about address (al->size must be set before * calling). Returns 0 on success, -1 otherwise. */ __s32 (*resolve_address)(void *ctx, __u64 address, struct perf_dlfilter_al *al); /* Return instruction bytes and length */ const __u8 *(*insn)(void *ctx, __u32 *length); /* Return source file name and line number */ const char *(*srcline)(void *ctx, __u32 *line_number); /* Return perf_event_attr, refer <linux/perf_event.h> */ struct perf_event_attr *(*attr)(void *ctx); /* Read object code, return numbers of bytes read */ __s32 (*object_code)(void *ctx, __u64 ip, void *buf, __u32 len); /* Reserved */ void *(*reserved[120])(void *); }; /* * If implemented, 'start' will be called at the beginning, * before any calls to 'filter_event'. Return 0 to indicate success, * or return a negative error code. '*data' can be assigned for use * by other functions. 'ctx' is needed for calls to perf_dlfilter_fns, * but most perf_dlfilter_fns are not valid when called from 'start'. */ int start(void **data, void *ctx); /* * If implemented, 'stop' will be called at the end, * after any calls to 'filter_event'. Return 0 to indicate success, or * return a negative error code. 'data' is set by start(). 'ctx' is * needed for calls to perf_dlfilter_fns, but most perf_dlfilter_fns * are not valid when called from 'stop'. */ int stop(void *data, void *ctx); /* * If implemented, 'filter_event' will be called for each sample * event. Return 0 to keep the sample event, 1 to filter it out, or * return a negative error code. 'data' is set by start(). 'ctx' is * needed for calls to perf_dlfilter_fns. */ int filter_event(void *data, const struct perf_dlfilter_sample *sample, void *ctx); /* * The same as 'filter_event' except it is called before internal * filtering. */ int filter_event_early(void *data, const struct perf_dlfilter_sample *sample, void *ctx); /* * If implemented, return a one-line description of the filter, and optionally * a longer description. */ const char *filter_description(const char **long_description); #endif
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