^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * Copyright (C) 2009, Steven Rostedt <srostedt@redhat.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) #include <dirent.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) #include <stdio.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) #include <stdlib.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) #include <string.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include <stdarg.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <sys/types.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <sys/stat.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <sys/wait.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <sys/mman.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <fcntl.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <unistd.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <errno.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include "trace-event.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include "debug.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) static int input_fd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) static ssize_t trace_data_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) static bool repipe;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) static int __do_read(int fd, void *buf, int size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) int rsize = size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) while (size) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) int ret = read(fd, buf, size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) if (ret <= 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) if (repipe) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) int retw = write(STDOUT_FILENO, buf, ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) if (retw <= 0 || retw != ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) pr_debug("repiping input file");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) size -= ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) buf += ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) return rsize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) static int do_read(void *data, int size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) int r;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) r = __do_read(input_fd, data, size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) if (r <= 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) pr_debug("reading input file (size expected=%d received=%d)",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) size, r);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) trace_data_size += r;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) return r;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) /* If it fails, the next read will report it */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) static void skip(int size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) char buf[BUFSIZ];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) int r;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) while (size) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) r = size > BUFSIZ ? BUFSIZ : size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) do_read(buf, r);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) size -= r;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) static unsigned int read4(struct tep_handle *pevent)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) unsigned int data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) if (do_read(&data, 4) < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) return tep_read_number(pevent, &data, 4);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) static unsigned long long read8(struct tep_handle *pevent)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) unsigned long long data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) if (do_read(&data, 8) < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) return tep_read_number(pevent, &data, 8);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) static char *read_string(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) char buf[BUFSIZ];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) char *str = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) int size = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) off_t r;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) char c;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) for (;;) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) r = read(input_fd, &c, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) if (r < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) pr_debug("reading input file");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) if (!r) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) pr_debug("no data");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) if (repipe) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) int retw = write(STDOUT_FILENO, &c, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) if (retw <= 0 || retw != r) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) pr_debug("repiping input file string");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) goto out;
^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)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) buf[size++] = c;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) if (!c)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) trace_data_size += size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) str = malloc(size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) if (str)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) memcpy(str, buf, size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) return str;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) static int read_proc_kallsyms(struct tep_handle *pevent)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) unsigned int size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) size = read4(pevent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) if (!size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) * Just skip it, now that we configure libtraceevent to use the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) * tools/perf/ symbol resolver.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) * We need to skip it so that we can continue parsing old perf.data
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) * files, that contains this /proc/kallsyms payload.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) * Newer perf.data files will have just the 4-bytes zeros "kallsyms
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) * payload", so that older tools can continue reading it and interpret
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) * it as "no kallsyms payload is present".
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) lseek(input_fd, size, SEEK_CUR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) trace_data_size += size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) static int read_ftrace_printk(struct tep_handle *pevent)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) unsigned int size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) char *buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) /* it can have 0 size */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) size = read4(pevent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) if (!size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) buf = malloc(size + 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) if (buf == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) if (do_read(buf, size) < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) free(buf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) buf[size] = '\0';
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) parse_ftrace_printk(pevent, buf, size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) free(buf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) static int read_header_files(struct tep_handle *pevent)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) unsigned long long size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) char *header_page;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) char buf[BUFSIZ];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) if (do_read(buf, 12) < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) if (memcmp(buf, "header_page", 12) != 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) pr_debug("did not read header page");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) return -1;
^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) size = read8(pevent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) header_page = malloc(size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) if (header_page == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) if (do_read(header_page, size) < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) pr_debug("did not read header page");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) free(header_page);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) if (!tep_parse_header_page(pevent, header_page, size,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) tep_get_long_size(pevent))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) * The commit field in the page is of type long,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) * use that instead, since it represents the kernel.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) tep_set_long_size(pevent, tep_get_header_page_size(pevent));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) free(header_page);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) if (do_read(buf, 13) < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) if (memcmp(buf, "header_event", 13) != 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) pr_debug("did not read header event");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) size = read8(pevent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) skip(size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) static int read_ftrace_file(struct tep_handle *pevent, unsigned long long size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) char *buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) buf = malloc(size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) if (buf == NULL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) pr_debug("memory allocation failure\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) ret = do_read(buf, size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) if (ret < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) pr_debug("error reading ftrace file.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) ret = parse_ftrace_file(pevent, buf, size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) pr_debug("error parsing ftrace file.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) free(buf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) static int read_event_file(struct tep_handle *pevent, char *sys,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) unsigned long long size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) char *buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) buf = malloc(size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) if (buf == NULL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) pr_debug("memory allocation failure\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) ret = do_read(buf, size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) ret = parse_event_file(pevent, buf, size, sys);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) pr_debug("error parsing event file.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) free(buf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) return ret;
^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 int read_ftrace_files(struct tep_handle *pevent)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) unsigned long long size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) int count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) count = read4(pevent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) for (i = 0; i < count; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) size = read8(pevent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) ret = read_ftrace_file(pevent, size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) static int read_event_files(struct tep_handle *pevent)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) unsigned long long size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) char *sys;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) int systems;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) int count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) int i,x;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) systems = read4(pevent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) for (i = 0; i < systems; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) sys = read_string();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) if (sys == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) count = read4(pevent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) for (x=0; x < count; x++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) size = read8(pevent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) ret = read_event_file(pevent, sys, size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) free(sys);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) free(sys);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) static int read_saved_cmdline(struct tep_handle *pevent)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) unsigned long long size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) char *buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) /* it can have 0 size */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) size = read8(pevent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) if (!size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) buf = malloc(size + 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) if (buf == NULL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) pr_debug("memory allocation failure\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) ret = do_read(buf, size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) if (ret < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) pr_debug("error reading saved cmdlines\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) buf[ret] = '\0';
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) parse_saved_cmdline(pevent, buf, size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) free(buf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) ssize_t trace_report(int fd, struct trace_event *tevent, bool __repipe)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) char buf[BUFSIZ];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) char test[] = { 23, 8, 68 };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) char *version;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) int show_version = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) int show_funcs = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) int show_printk = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) ssize_t size = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) int file_bigendian;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) int host_bigendian;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) int file_long_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) int file_page_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) struct tep_handle *pevent = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) repipe = __repipe;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) input_fd = fd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) if (do_read(buf, 3) < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) if (memcmp(buf, test, 3) != 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) pr_debug("no trace data in the file");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) if (do_read(buf, 7) < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) if (memcmp(buf, "tracing", 7) != 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) pr_debug("not a trace file (missing 'tracing' tag)");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) version = read_string();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) if (version == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) if (show_version)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) printf("version = %s\n", version);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) if (do_read(buf, 1) < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) free(version);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) file_bigendian = buf[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) host_bigendian = bigendian();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) if (trace_event__init(tevent)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) pr_debug("trace_event__init failed");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) pevent = tevent->pevent;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) tep_set_flag(pevent, TEP_NSEC_OUTPUT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) tep_set_file_bigendian(pevent, file_bigendian);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) tep_set_local_bigendian(pevent, host_bigendian);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) if (do_read(buf, 1) < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) file_long_size = buf[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) file_page_size = read4(pevent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) if (!file_page_size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) tep_set_long_size(pevent, file_long_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) tep_set_page_size(pevent, file_page_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) err = read_header_files(pevent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) err = read_ftrace_files(pevent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) err = read_event_files(pevent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) err = read_proc_kallsyms(pevent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) err = read_ftrace_printk(pevent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) if (atof(version) >= 0.6) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) err = read_saved_cmdline(pevent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) size = trace_data_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) repipe = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) if (show_funcs) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) tep_print_funcs(pevent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) } else if (show_printk) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) tep_print_printk(pevent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) pevent = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) if (pevent)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) trace_event__cleanup(tevent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) free(version);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) return size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) }
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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