^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * Common header file for probe-based Dynamic events.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * This code was copied from kernel/trace/trace_kprobe.h written by
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) * Updates to make this generic:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) * Copyright (C) IBM Corporation, 2010-2011
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) * Author: Srikar Dronamraju
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/seq_file.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/smp.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/tracefs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/types.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <linux/string.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <linux/ptrace.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include <linux/perf_event.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include <linux/kprobes.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #include <linux/stringify.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #include <linux/limits.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #include <linux/uaccess.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #include <linux/bitops.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #include <asm/bitsperlong.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) #include "trace.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) #include "trace_output.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) #define MAX_TRACE_ARGS 128
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) #define MAX_ARGSTR_LEN 63
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) #define MAX_ARRAY_LEN 64
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) #define MAX_ARG_NAME_LEN 32
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) #define MAX_STRING_SIZE PATH_MAX
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) /* Reserved field names */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) #define FIELD_STRING_IP "__probe_ip"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) #define FIELD_STRING_RETIP "__probe_ret_ip"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) #define FIELD_STRING_FUNC "__probe_func"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) #undef DEFINE_FIELD
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) #define DEFINE_FIELD(type, item, name, is_signed) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) do { \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) ret = trace_define_field(event_call, #type, name, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) offsetof(typeof(field), item), \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) sizeof(field.item), is_signed, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) FILTER_OTHER); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) if (ret) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) return ret; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) } while (0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) /* Flags for trace_probe */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) #define TP_FLAG_TRACE 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) #define TP_FLAG_PROFILE 2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) /* data_loc: data location, compatible with u32 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) #define make_data_loc(len, offs) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) (((u32)(len) << 16) | ((u32)(offs) & 0xffff))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) #define get_loc_len(dl) ((u32)(dl) >> 16)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) #define get_loc_offs(dl) ((u32)(dl) & 0xffff)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) static nokprobe_inline void *get_loc_data(u32 *dl, void *ent)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) return (u8 *)ent + get_loc_offs(*dl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) static nokprobe_inline u32 update_data_loc(u32 loc, int consumed)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) u32 maxlen = get_loc_len(loc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) u32 offset = get_loc_offs(loc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) return make_data_loc(maxlen - consumed, offset + consumed);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) /* Printing function type */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) typedef int (*print_type_func_t)(struct trace_seq *, void *, void *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) enum fetch_op {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) FETCH_OP_NOP = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) // Stage 1 (load) ops
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) FETCH_OP_REG, /* Register : .param = offset */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) FETCH_OP_STACK, /* Stack : .param = index */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) FETCH_OP_STACKP, /* Stack pointer */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) FETCH_OP_RETVAL, /* Return value */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) FETCH_OP_IMM, /* Immediate : .immediate */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) FETCH_OP_COMM, /* Current comm */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) FETCH_OP_ARG, /* Function argument : .param */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) FETCH_OP_FOFFS, /* File offset: .immediate */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) FETCH_OP_DATA, /* Allocated data: .data */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) // Stage 2 (dereference) op
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) FETCH_OP_DEREF, /* Dereference: .offset */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) FETCH_OP_UDEREF, /* User-space Dereference: .offset */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) // Stage 3 (store) ops
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) FETCH_OP_ST_RAW, /* Raw: .size */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) FETCH_OP_ST_MEM, /* Mem: .offset, .size */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) FETCH_OP_ST_UMEM, /* Mem: .offset, .size */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) FETCH_OP_ST_STRING, /* String: .offset, .size */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) FETCH_OP_ST_USTRING, /* User String: .offset, .size */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) // Stage 4 (modify) op
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) FETCH_OP_MOD_BF, /* Bitfield: .basesize, .lshift, .rshift */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) // Stage 5 (loop) op
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) FETCH_OP_LP_ARRAY, /* Array: .param = loop count */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) FETCH_OP_END,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) FETCH_NOP_SYMBOL, /* Unresolved Symbol holder */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) struct fetch_insn {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) enum fetch_op op;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) union {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) unsigned int param;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) struct {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) unsigned int size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) int offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) struct {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) unsigned char basesize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) unsigned char lshift;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) unsigned char rshift;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) unsigned long immediate;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) void *data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) /* fetch + deref*N + store + mod + end <= 16, this allows N=12, enough */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) #define FETCH_INSN_MAX 16
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) #define FETCH_TOKEN_COMM (-ECOMM)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) /* Fetch type information table */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) struct fetch_type {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) const char *name; /* Name of type */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) size_t size; /* Byte size of type */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) int is_signed; /* Signed flag */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) print_type_func_t print; /* Print functions */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) const char *fmt; /* Fromat string */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) const char *fmttype; /* Name in format file */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) /* For defining macros, define string/string_size types */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) typedef u32 string;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) typedef u32 string_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) #define PRINT_TYPE_FUNC_NAME(type) print_type_##type
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) #define PRINT_TYPE_FMT_NAME(type) print_type_format_##type
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) /* Printing in basic type function template */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) #define DECLARE_BASIC_PRINT_TYPE_FUNC(type) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) int PRINT_TYPE_FUNC_NAME(type)(struct trace_seq *s, void *data, void *ent);\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) extern const char PRINT_TYPE_FMT_NAME(type)[]
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) DECLARE_BASIC_PRINT_TYPE_FUNC(u8);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) DECLARE_BASIC_PRINT_TYPE_FUNC(u16);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) DECLARE_BASIC_PRINT_TYPE_FUNC(u32);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) DECLARE_BASIC_PRINT_TYPE_FUNC(u64);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) DECLARE_BASIC_PRINT_TYPE_FUNC(s8);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) DECLARE_BASIC_PRINT_TYPE_FUNC(s16);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) DECLARE_BASIC_PRINT_TYPE_FUNC(s32);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) DECLARE_BASIC_PRINT_TYPE_FUNC(s64);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) DECLARE_BASIC_PRINT_TYPE_FUNC(x8);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) DECLARE_BASIC_PRINT_TYPE_FUNC(x16);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) DECLARE_BASIC_PRINT_TYPE_FUNC(x32);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) DECLARE_BASIC_PRINT_TYPE_FUNC(x64);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) DECLARE_BASIC_PRINT_TYPE_FUNC(string);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) DECLARE_BASIC_PRINT_TYPE_FUNC(symbol);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) /* Default (unsigned long) fetch type */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) #define __DEFAULT_FETCH_TYPE(t) x##t
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) #define _DEFAULT_FETCH_TYPE(t) __DEFAULT_FETCH_TYPE(t)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) #define DEFAULT_FETCH_TYPE _DEFAULT_FETCH_TYPE(BITS_PER_LONG)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) #define DEFAULT_FETCH_TYPE_STR __stringify(DEFAULT_FETCH_TYPE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) #define __ADDR_FETCH_TYPE(t) u##t
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) #define _ADDR_FETCH_TYPE(t) __ADDR_FETCH_TYPE(t)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) #define ADDR_FETCH_TYPE _ADDR_FETCH_TYPE(BITS_PER_LONG)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) #define __ASSIGN_FETCH_TYPE(_name, ptype, ftype, _size, sign, _fmttype) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) {.name = _name, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) .size = _size, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) .is_signed = sign, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) .print = PRINT_TYPE_FUNC_NAME(ptype), \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) .fmt = PRINT_TYPE_FMT_NAME(ptype), \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) .fmttype = _fmttype, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) #define _ASSIGN_FETCH_TYPE(_name, ptype, ftype, _size, sign, _fmttype) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) __ASSIGN_FETCH_TYPE(_name, ptype, ftype, _size, sign, #_fmttype)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) #define ASSIGN_FETCH_TYPE(ptype, ftype, sign) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) _ASSIGN_FETCH_TYPE(#ptype, ptype, ftype, sizeof(ftype), sign, ptype)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) /* If ptype is an alias of atype, use this macro (show atype in format) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) #define ASSIGN_FETCH_TYPE_ALIAS(ptype, atype, ftype, sign) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) _ASSIGN_FETCH_TYPE(#ptype, ptype, ftype, sizeof(ftype), sign, atype)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) #define ASSIGN_FETCH_TYPE_END {}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) #define MAX_ARRAY_LEN 64
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) #ifdef CONFIG_KPROBE_EVENTS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) bool trace_kprobe_on_func_entry(struct trace_event_call *call);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) bool trace_kprobe_error_injectable(struct trace_event_call *call);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) static inline bool trace_kprobe_on_func_entry(struct trace_event_call *call)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) static inline bool trace_kprobe_error_injectable(struct trace_event_call *call)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) #endif /* CONFIG_KPROBE_EVENTS */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) struct probe_arg {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) struct fetch_insn *code;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) bool dynamic;/* Dynamic array (string) is used */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) unsigned int offset; /* Offset from argument entry */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) unsigned int count; /* Array count */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) const char *name; /* Name of this argument */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) const char *comm; /* Command of this argument */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) char *fmt; /* Format string if needed */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) const struct fetch_type *type; /* Type of this argument */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) struct trace_uprobe_filter {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) rwlock_t rwlock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) int nr_systemwide;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) struct list_head perf_events;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) /* Event call and class holder */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) struct trace_probe_event {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) unsigned int flags; /* For TP_FLAG_* */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) struct trace_event_class class;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) struct trace_event_call call;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) struct list_head files;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) struct list_head probes;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) struct trace_uprobe_filter filter[];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) struct trace_probe {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) struct list_head list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) struct trace_probe_event *event;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) ssize_t size; /* trace entry size */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) unsigned int nr_args;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) struct probe_arg args[];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) struct event_file_link {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) struct trace_event_file *file;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) struct list_head list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) static inline bool trace_probe_test_flag(struct trace_probe *tp,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) unsigned int flag)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) return !!(tp->event->flags & flag);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) static inline void trace_probe_set_flag(struct trace_probe *tp,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) unsigned int flag)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) tp->event->flags |= flag;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) static inline void trace_probe_clear_flag(struct trace_probe *tp,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) unsigned int flag)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) tp->event->flags &= ~flag;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) static inline bool trace_probe_is_enabled(struct trace_probe *tp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) return trace_probe_test_flag(tp, TP_FLAG_TRACE | TP_FLAG_PROFILE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) static inline const char *trace_probe_name(struct trace_probe *tp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) return trace_event_name(&tp->event->call);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) static inline const char *trace_probe_group_name(struct trace_probe *tp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) return tp->event->call.class->system;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) static inline struct trace_event_call *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) trace_probe_event_call(struct trace_probe *tp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) return &tp->event->call;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) static inline struct trace_probe_event *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) trace_probe_event_from_call(struct trace_event_call *event_call)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) return container_of(event_call, struct trace_probe_event, call);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) static inline struct trace_probe *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) trace_probe_primary_from_call(struct trace_event_call *call)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) struct trace_probe_event *tpe = trace_probe_event_from_call(call);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) return list_first_entry(&tpe->probes, struct trace_probe, list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) static inline struct list_head *trace_probe_probe_list(struct trace_probe *tp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) return &tp->event->probes;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) static inline bool trace_probe_has_sibling(struct trace_probe *tp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) struct list_head *list = trace_probe_probe_list(tp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) return !list_empty(list) && !list_is_singular(list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) static inline int trace_probe_unregister_event_call(struct trace_probe *tp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) /* tp->event is unregistered in trace_remove_event_call() */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) return trace_remove_event_call(&tp->event->call);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) static inline bool trace_probe_has_single_file(struct trace_probe *tp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) return !!list_is_singular(&tp->event->files);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) int trace_probe_init(struct trace_probe *tp, const char *event,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) const char *group, bool alloc_filter);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) void trace_probe_cleanup(struct trace_probe *tp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) int trace_probe_append(struct trace_probe *tp, struct trace_probe *to);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) void trace_probe_unlink(struct trace_probe *tp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) int trace_probe_register_event_call(struct trace_probe *tp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) int trace_probe_add_file(struct trace_probe *tp, struct trace_event_file *file);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) int trace_probe_remove_file(struct trace_probe *tp,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) struct trace_event_file *file);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) struct event_file_link *trace_probe_get_file_link(struct trace_probe *tp,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) struct trace_event_file *file);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) int trace_probe_compare_arg_type(struct trace_probe *a, struct trace_probe *b);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) bool trace_probe_match_command_args(struct trace_probe *tp,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) int argc, const char **argv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) #define trace_probe_for_each_link(pos, tp) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) list_for_each_entry(pos, &(tp)->event->files, list)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) #define trace_probe_for_each_link_rcu(pos, tp) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) list_for_each_entry_rcu(pos, &(tp)->event->files, list)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) #define TPARG_FL_RETURN BIT(0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) #define TPARG_FL_KERNEL BIT(1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) #define TPARG_FL_FENTRY BIT(2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) #define TPARG_FL_MASK GENMASK(2, 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) extern int traceprobe_parse_probe_arg(struct trace_probe *tp, int i,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) char *arg, unsigned int flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) extern int traceprobe_update_arg(struct probe_arg *arg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) extern void traceprobe_free_probe_arg(struct probe_arg *arg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) extern int traceprobe_split_symbol_offset(char *symbol, long *offset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) int traceprobe_parse_event_name(const char **pevent, const char **pgroup,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) char *buf, int offset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) extern int traceprobe_set_print_fmt(struct trace_probe *tp, bool is_return);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) #ifdef CONFIG_PERF_EVENTS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) extern struct trace_event_call *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) create_local_trace_kprobe(char *func, void *addr, unsigned long offs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) bool is_return);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) extern void destroy_local_trace_kprobe(struct trace_event_call *event_call);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) extern struct trace_event_call *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) create_local_trace_uprobe(char *name, unsigned long offs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) unsigned long ref_ctr_offset, bool is_return);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) extern void destroy_local_trace_uprobe(struct trace_event_call *event_call);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) extern int traceprobe_define_arg_fields(struct trace_event_call *event_call,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) size_t offset, struct trace_probe *tp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) #undef ERRORS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) #define ERRORS \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) C(FILE_NOT_FOUND, "Failed to find the given file"), \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) C(NO_REGULAR_FILE, "Not a regular file"), \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) C(BAD_REFCNT, "Invalid reference counter offset"), \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) C(REFCNT_OPEN_BRACE, "Reference counter brace is not closed"), \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) C(BAD_REFCNT_SUFFIX, "Reference counter has wrong suffix"), \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) C(BAD_UPROBE_OFFS, "Invalid uprobe offset"), \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) C(MAXACT_NO_KPROBE, "Maxactive is not for kprobe"), \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) C(BAD_MAXACT, "Invalid maxactive number"), \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) C(MAXACT_TOO_BIG, "Maxactive is too big"), \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) C(BAD_PROBE_ADDR, "Invalid probed address or symbol"), \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) C(BAD_RETPROBE, "Retprobe address must be an function entry"), \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) C(BAD_ADDR_SUFFIX, "Invalid probed address suffix"), \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) C(NO_GROUP_NAME, "Group name is not specified"), \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) C(GROUP_TOO_LONG, "Group name is too long"), \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) C(BAD_GROUP_NAME, "Group name must follow the same rules as C identifiers"), \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) C(NO_EVENT_NAME, "Event name is not specified"), \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) C(EVENT_TOO_LONG, "Event name is too long"), \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) C(BAD_EVENT_NAME, "Event name must follow the same rules as C identifiers"), \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) C(EVENT_EXIST, "Given group/event name is already used by another event"), \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) C(RETVAL_ON_PROBE, "$retval is not available on probe"), \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) C(BAD_STACK_NUM, "Invalid stack number"), \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) C(BAD_ARG_NUM, "Invalid argument number"), \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) C(BAD_VAR, "Invalid $-valiable specified"), \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) C(BAD_REG_NAME, "Invalid register name"), \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) C(BAD_MEM_ADDR, "Invalid memory address"), \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) C(BAD_IMM, "Invalid immediate value"), \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) C(IMMSTR_NO_CLOSE, "String is not closed with '\"'"), \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) C(FILE_ON_KPROBE, "File offset is not available with kprobe"), \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) C(BAD_FILE_OFFS, "Invalid file offset value"), \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) C(SYM_ON_UPROBE, "Symbol is not available with uprobe"), \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) C(TOO_MANY_OPS, "Dereference is too much nested"), \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) C(DEREF_NEED_BRACE, "Dereference needs a brace"), \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) C(BAD_DEREF_OFFS, "Invalid dereference offset"), \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) C(DEREF_OPEN_BRACE, "Dereference brace is not closed"), \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) C(COMM_CANT_DEREF, "$comm can not be dereferenced"), \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) C(BAD_FETCH_ARG, "Invalid fetch argument"), \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) C(ARRAY_NO_CLOSE, "Array is not closed"), \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) C(BAD_ARRAY_SUFFIX, "Array has wrong suffix"), \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) C(BAD_ARRAY_NUM, "Invalid array size"), \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) C(ARRAY_TOO_BIG, "Array number is too big"), \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) C(BAD_TYPE, "Unknown type is specified"), \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) C(BAD_STRING, "String accepts only memory argument"), \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) C(BAD_BITFIELD, "Invalid bitfield"), \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) C(ARG_NAME_TOO_LONG, "Argument name is too long"), \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) C(NO_ARG_NAME, "Argument name is not specified"), \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) C(BAD_ARG_NAME, "Argument name must follow the same rules as C identifiers"), \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) C(USED_ARG_NAME, "This argument name is already used"), \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) C(ARG_TOO_LONG, "Argument expression is too long"), \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) C(NO_ARG_BODY, "No argument expression"), \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) C(BAD_INSN_BNDRY, "Probe point is not an instruction boundary"),\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) C(FAIL_REG_PROBE, "Failed to register probe event"),\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) C(DIFF_PROBE_TYPE, "Probe type is different from existing probe"),\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) C(DIFF_ARG_TYPE, "Argument type or name is different from existing probe"),\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) C(SAME_PROBE, "There is already the exact same probe event"),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) #undef C
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) #define C(a, b) TP_ERR_##a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) /* Define TP_ERR_ */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) enum { ERRORS };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) /* Error text is defined in trace_probe.c */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) struct trace_probe_log {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) const char *subsystem;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) const char **argv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) int argc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) int index;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) void trace_probe_log_init(const char *subsystem, int argc, const char **argv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) void trace_probe_log_set_index(int index);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) void trace_probe_log_clear(void);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) void __trace_probe_log_err(int offset, int err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) #define trace_probe_log_err(offs, err) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) __trace_probe_log_err(offs, TP_ERR_##err)
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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