1 // SPDX-License-Identifier: GPL-2.0
12 #include <linux/compiler.h>
13 #include <linux/list.h>
14 #include <linux/kernel.h>
15 #include <linux/bitops.h>
16 #include <linux/string.h>
17 #include <linux/stringify.h>
18 #include <linux/zalloc.h>
20 #include <sys/utsname.h>
21 #include <linux/time64.h>
23 #ifdef HAVE_LIBBPF_SUPPORT
24 #include <bpf/libbpf.h>
26 #include <perf/cpumap.h>
31 #include "util/evsel_fprintf.h"
34 #include "trace-event.h"
44 #include <api/fs/fs.h>
47 #include "time-utils.h"
49 #include "util/util.h" // perf_exe()
51 #include "bpf-event.h"
52 #include "bpf-utils.h"
54 #include "pmu-hybrid.h"
56 #include <linux/ctype.h>
57 #include <internal/lib.h>
59 #ifdef HAVE_LIBTRACEEVENT
60 #include <traceevent/event-parse.h>
65 * must be a numerical value to let the endianness
66 * determine the memory layout. That way we are able
67 * to detect endianness when reading the perf.data file
70 * we check for legacy (PERFFILE) format.
72 static const char *__perf_magic1 = "PERFFILE";
73 static const u64 __perf_magic2 = 0x32454c4946524550ULL;
74 static const u64 __perf_magic2_sw = 0x50455246494c4532ULL;
76 #define PERF_MAGIC __perf_magic2
78 const char perf_version_string[] = PERF_VERSION;
80 struct perf_file_attr {
81 struct perf_event_attr attr;
82 struct perf_file_section ids;
85 void perf_header__set_feat(struct perf_header *header, int feat)
87 __set_bit(feat, header->adds_features);
90 void perf_header__clear_feat(struct perf_header *header, int feat)
92 __clear_bit(feat, header->adds_features);
95 bool perf_header__has_feat(const struct perf_header *header, int feat)
97 return test_bit(feat, header->adds_features);
100 static int __do_write_fd(struct feat_fd *ff, const void *buf, size_t size)
102 ssize_t ret = writen(ff->fd, buf, size);
104 if (ret != (ssize_t)size)
105 return ret < 0 ? (int)ret : -1;
109 static int __do_write_buf(struct feat_fd *ff, const void *buf, size_t size)
111 /* struct perf_event_header::size is u16 */
112 const size_t max_size = 0xffff - sizeof(struct perf_event_header);
113 size_t new_size = ff->size;
116 if (size + ff->offset > max_size)
119 while (size > (new_size - ff->offset))
121 new_size = min(max_size, new_size);
123 if (ff->size < new_size) {
124 addr = realloc(ff->buf, new_size);
131 memcpy(ff->buf + ff->offset, buf, size);
137 /* Return: 0 if succeeded, -ERR if failed. */
138 int do_write(struct feat_fd *ff, const void *buf, size_t size)
141 return __do_write_fd(ff, buf, size);
142 return __do_write_buf(ff, buf, size);
145 /* Return: 0 if succeeded, -ERR if failed. */
146 static int do_write_bitmap(struct feat_fd *ff, unsigned long *set, u64 size)
148 u64 *p = (u64 *) set;
151 ret = do_write(ff, &size, sizeof(size));
155 for (i = 0; (u64) i < BITS_TO_U64(size); i++) {
156 ret = do_write(ff, p + i, sizeof(*p));
164 /* Return: 0 if succeeded, -ERR if failed. */
165 int write_padded(struct feat_fd *ff, const void *bf,
166 size_t count, size_t count_aligned)
168 static const char zero_buf[NAME_ALIGN];
169 int err = do_write(ff, bf, count);
172 err = do_write(ff, zero_buf, count_aligned - count);
177 #define string_size(str) \
178 (PERF_ALIGN((strlen(str) + 1), NAME_ALIGN) + sizeof(u32))
180 /* Return: 0 if succeeded, -ERR if failed. */
181 static int do_write_string(struct feat_fd *ff, const char *str)
186 olen = strlen(str) + 1;
187 len = PERF_ALIGN(olen, NAME_ALIGN);
189 /* write len, incl. \0 */
190 ret = do_write(ff, &len, sizeof(len));
194 return write_padded(ff, str, olen, len);
197 static int __do_read_fd(struct feat_fd *ff, void *addr, ssize_t size)
199 ssize_t ret = readn(ff->fd, addr, size);
202 return ret < 0 ? (int)ret : -1;
206 static int __do_read_buf(struct feat_fd *ff, void *addr, ssize_t size)
208 if (size > (ssize_t)ff->size - ff->offset)
211 memcpy(addr, ff->buf + ff->offset, size);
218 static int __do_read(struct feat_fd *ff, void *addr, ssize_t size)
221 return __do_read_fd(ff, addr, size);
222 return __do_read_buf(ff, addr, size);
225 static int do_read_u32(struct feat_fd *ff, u32 *addr)
229 ret = __do_read(ff, addr, sizeof(*addr));
233 if (ff->ph->needs_swap)
234 *addr = bswap_32(*addr);
238 static int do_read_u64(struct feat_fd *ff, u64 *addr)
242 ret = __do_read(ff, addr, sizeof(*addr));
246 if (ff->ph->needs_swap)
247 *addr = bswap_64(*addr);
251 static char *do_read_string(struct feat_fd *ff)
256 if (do_read_u32(ff, &len))
263 if (!__do_read(ff, buf, len)) {
265 * strings are padded by zeroes
266 * thus the actual strlen of buf
267 * may be less than len
276 /* Return: 0 if succeeded, -ERR if failed. */
277 static int do_read_bitmap(struct feat_fd *ff, unsigned long **pset, u64 *psize)
283 ret = do_read_u64(ff, &size);
287 set = bitmap_zalloc(size);
293 for (i = 0; (u64) i < BITS_TO_U64(size); i++) {
294 ret = do_read_u64(ff, p + i);
306 #ifdef HAVE_LIBTRACEEVENT
307 static int write_tracing_data(struct feat_fd *ff,
308 struct evlist *evlist)
310 if (WARN(ff->buf, "Error: calling %s in pipe-mode.\n", __func__))
313 return read_tracing_data(ff->fd, &evlist->core.entries);
317 static int write_build_id(struct feat_fd *ff,
318 struct evlist *evlist __maybe_unused)
320 struct perf_session *session;
323 session = container_of(ff->ph, struct perf_session, header);
325 if (!perf_session__read_build_ids(session, true))
328 if (WARN(ff->buf, "Error: calling %s in pipe-mode.\n", __func__))
331 err = perf_session__write_buildid_table(session, ff);
333 pr_debug("failed to write buildid table\n");
336 perf_session__cache_build_ids(session);
341 static int write_hostname(struct feat_fd *ff,
342 struct evlist *evlist __maybe_unused)
351 return do_write_string(ff, uts.nodename);
354 static int write_osrelease(struct feat_fd *ff,
355 struct evlist *evlist __maybe_unused)
364 return do_write_string(ff, uts.release);
367 static int write_arch(struct feat_fd *ff,
368 struct evlist *evlist __maybe_unused)
377 return do_write_string(ff, uts.machine);
380 static int write_version(struct feat_fd *ff,
381 struct evlist *evlist __maybe_unused)
383 return do_write_string(ff, perf_version_string);
386 static int __write_cpudesc(struct feat_fd *ff, const char *cpuinfo_proc)
391 const char *search = cpuinfo_proc;
398 file = fopen("/proc/cpuinfo", "r");
402 while (getline(&buf, &len, file) > 0) {
403 ret = strncmp(buf, search, strlen(search));
415 p = strchr(buf, ':');
416 if (p && *(p+1) == ' ' && *(p+2))
422 /* squash extra space characters (branding string) */
427 char *q = skip_spaces(r);
430 while ((*r++ = *q++));
434 ret = do_write_string(ff, s);
441 static int write_cpudesc(struct feat_fd *ff,
442 struct evlist *evlist __maybe_unused)
444 #if defined(__powerpc__) || defined(__hppa__) || defined(__sparc__)
445 #define CPUINFO_PROC { "cpu", }
446 #elif defined(__s390__)
447 #define CPUINFO_PROC { "vendor_id", }
448 #elif defined(__sh__)
449 #define CPUINFO_PROC { "cpu type", }
450 #elif defined(__alpha__) || defined(__mips__)
451 #define CPUINFO_PROC { "cpu model", }
452 #elif defined(__arm__)
453 #define CPUINFO_PROC { "model name", "Processor", }
454 #elif defined(__arc__)
455 #define CPUINFO_PROC { "Processor", }
456 #elif defined(__xtensa__)
457 #define CPUINFO_PROC { "core ID", }
459 #define CPUINFO_PROC { "model name", }
461 const char *cpuinfo_procs[] = CPUINFO_PROC;
465 for (i = 0; i < ARRAY_SIZE(cpuinfo_procs); i++) {
467 ret = __write_cpudesc(ff, cpuinfo_procs[i]);
475 static int write_nrcpus(struct feat_fd *ff,
476 struct evlist *evlist __maybe_unused)
482 nrc = cpu__max_present_cpu().cpu;
484 nr = sysconf(_SC_NPROCESSORS_ONLN);
488 nra = (u32)(nr & UINT_MAX);
490 ret = do_write(ff, &nrc, sizeof(nrc));
494 return do_write(ff, &nra, sizeof(nra));
497 static int write_event_desc(struct feat_fd *ff,
498 struct evlist *evlist)
504 nre = evlist->core.nr_entries;
507 * write number of events
509 ret = do_write(ff, &nre, sizeof(nre));
514 * size of perf_event_attr struct
516 sz = (u32)sizeof(evsel->core.attr);
517 ret = do_write(ff, &sz, sizeof(sz));
521 evlist__for_each_entry(evlist, evsel) {
522 ret = do_write(ff, &evsel->core.attr, sz);
526 * write number of unique id per event
527 * there is one id per instance of an event
529 * copy into an nri to be independent of the
532 nri = evsel->core.ids;
533 ret = do_write(ff, &nri, sizeof(nri));
538 * write event string as passed on cmdline
540 ret = do_write_string(ff, evsel__name(evsel));
544 * write unique ids for this event
546 ret = do_write(ff, evsel->core.id, evsel->core.ids * sizeof(u64));
553 static int write_cmdline(struct feat_fd *ff,
554 struct evlist *evlist __maybe_unused)
556 char pbuf[MAXPATHLEN], *buf;
559 /* actual path to perf binary */
560 buf = perf_exe(pbuf, MAXPATHLEN);
562 /* account for binary path */
563 n = perf_env.nr_cmdline + 1;
565 ret = do_write(ff, &n, sizeof(n));
569 ret = do_write_string(ff, buf);
573 for (i = 0 ; i < perf_env.nr_cmdline; i++) {
574 ret = do_write_string(ff, perf_env.cmdline_argv[i]);
582 static int write_cpu_topology(struct feat_fd *ff,
583 struct evlist *evlist __maybe_unused)
585 struct cpu_topology *tp;
589 tp = cpu_topology__new();
593 ret = do_write(ff, &tp->package_cpus_lists, sizeof(tp->package_cpus_lists));
597 for (i = 0; i < tp->package_cpus_lists; i++) {
598 ret = do_write_string(ff, tp->package_cpus_list[i]);
602 ret = do_write(ff, &tp->core_cpus_lists, sizeof(tp->core_cpus_lists));
606 for (i = 0; i < tp->core_cpus_lists; i++) {
607 ret = do_write_string(ff, tp->core_cpus_list[i]);
612 ret = perf_env__read_cpu_topology_map(&perf_env);
616 for (j = 0; j < perf_env.nr_cpus_avail; j++) {
617 ret = do_write(ff, &perf_env.cpu[j].core_id,
618 sizeof(perf_env.cpu[j].core_id));
621 ret = do_write(ff, &perf_env.cpu[j].socket_id,
622 sizeof(perf_env.cpu[j].socket_id));
627 if (!tp->die_cpus_lists)
630 ret = do_write(ff, &tp->die_cpus_lists, sizeof(tp->die_cpus_lists));
634 for (i = 0; i < tp->die_cpus_lists; i++) {
635 ret = do_write_string(ff, tp->die_cpus_list[i]);
640 for (j = 0; j < perf_env.nr_cpus_avail; j++) {
641 ret = do_write(ff, &perf_env.cpu[j].die_id,
642 sizeof(perf_env.cpu[j].die_id));
648 cpu_topology__delete(tp);
654 static int write_total_mem(struct feat_fd *ff,
655 struct evlist *evlist __maybe_unused)
663 fp = fopen("/proc/meminfo", "r");
667 while (getline(&buf, &len, fp) > 0) {
668 ret = strncmp(buf, "MemTotal:", 9);
673 n = sscanf(buf, "%*s %"PRIu64, &mem);
675 ret = do_write(ff, &mem, sizeof(mem));
683 static int write_numa_topology(struct feat_fd *ff,
684 struct evlist *evlist __maybe_unused)
686 struct numa_topology *tp;
690 tp = numa_topology__new();
694 ret = do_write(ff, &tp->nr, sizeof(u32));
698 for (i = 0; i < tp->nr; i++) {
699 struct numa_topology_node *n = &tp->nodes[i];
701 ret = do_write(ff, &n->node, sizeof(u32));
705 ret = do_write(ff, &n->mem_total, sizeof(u64));
709 ret = do_write(ff, &n->mem_free, sizeof(u64));
713 ret = do_write_string(ff, n->cpus);
721 numa_topology__delete(tp);
728 * struct pmu_mappings {
737 static int write_pmu_mappings(struct feat_fd *ff,
738 struct evlist *evlist __maybe_unused)
740 struct perf_pmu *pmu = NULL;
745 * Do a first pass to count number of pmu to avoid lseek so this
746 * works in pipe mode as well.
748 while ((pmu = perf_pmu__scan(pmu))) {
754 ret = do_write(ff, &pmu_num, sizeof(pmu_num));
758 while ((pmu = perf_pmu__scan(pmu))) {
762 ret = do_write(ff, &pmu->type, sizeof(pmu->type));
766 ret = do_write_string(ff, pmu->name);
777 * struct group_descs {
779 * struct group_desc {
786 static int write_group_desc(struct feat_fd *ff,
787 struct evlist *evlist)
789 u32 nr_groups = evlist->core.nr_groups;
793 ret = do_write(ff, &nr_groups, sizeof(nr_groups));
797 evlist__for_each_entry(evlist, evsel) {
798 if (evsel__is_group_leader(evsel) && evsel->core.nr_members > 1) {
799 const char *name = evsel->group_name ?: "{anon_group}";
800 u32 leader_idx = evsel->core.idx;
801 u32 nr_members = evsel->core.nr_members;
803 ret = do_write_string(ff, name);
807 ret = do_write(ff, &leader_idx, sizeof(leader_idx));
811 ret = do_write(ff, &nr_members, sizeof(nr_members));
820 * Return the CPU id as a raw string.
822 * Each architecture should provide a more precise id string that
823 * can be use to match the architecture's "mapfile".
825 char * __weak get_cpuid_str(struct perf_pmu *pmu __maybe_unused)
830 /* Return zero when the cpuid from the mapfile.csv matches the
831 * cpuid string generated on this platform.
832 * Otherwise return non-zero.
834 int __weak strcmp_cpuid_str(const char *mapcpuid, const char *cpuid)
837 regmatch_t pmatch[1];
840 if (regcomp(&re, mapcpuid, REG_EXTENDED) != 0) {
841 /* Warn unable to generate match particular string. */
842 pr_info("Invalid regular expression %s\n", mapcpuid);
846 match = !regexec(&re, cpuid, 1, pmatch, 0);
849 size_t match_len = (pmatch[0].rm_eo - pmatch[0].rm_so);
851 /* Verify the entire string matched. */
852 if (match_len == strlen(cpuid))
859 * default get_cpuid(): nothing gets recorded
860 * actual implementation must be in arch/$(SRCARCH)/util/header.c
862 int __weak get_cpuid(char *buffer __maybe_unused, size_t sz __maybe_unused)
864 return ENOSYS; /* Not implemented */
867 static int write_cpuid(struct feat_fd *ff,
868 struct evlist *evlist __maybe_unused)
873 ret = get_cpuid(buffer, sizeof(buffer));
877 return do_write_string(ff, buffer);
880 static int write_branch_stack(struct feat_fd *ff __maybe_unused,
881 struct evlist *evlist __maybe_unused)
886 static int write_auxtrace(struct feat_fd *ff,
887 struct evlist *evlist __maybe_unused)
889 struct perf_session *session;
892 if (WARN(ff->buf, "Error: calling %s in pipe-mode.\n", __func__))
895 session = container_of(ff->ph, struct perf_session, header);
897 err = auxtrace_index__write(ff->fd, &session->auxtrace_index);
899 pr_err("Failed to write auxtrace index\n");
903 static int write_clockid(struct feat_fd *ff,
904 struct evlist *evlist __maybe_unused)
906 return do_write(ff, &ff->ph->env.clock.clockid_res_ns,
907 sizeof(ff->ph->env.clock.clockid_res_ns));
910 static int write_clock_data(struct feat_fd *ff,
911 struct evlist *evlist __maybe_unused)
920 ret = do_write(ff, &data32, sizeof(data32));
925 data32 = ff->ph->env.clock.clockid;
927 ret = do_write(ff, &data32, sizeof(data32));
932 data64 = &ff->ph->env.clock.tod_ns;
934 ret = do_write(ff, data64, sizeof(*data64));
938 /* clockid ref time */
939 data64 = &ff->ph->env.clock.clockid_ns;
941 return do_write(ff, data64, sizeof(*data64));
944 static int write_hybrid_topology(struct feat_fd *ff,
945 struct evlist *evlist __maybe_unused)
947 struct hybrid_topology *tp;
951 tp = hybrid_topology__new();
955 ret = do_write(ff, &tp->nr, sizeof(u32));
959 for (i = 0; i < tp->nr; i++) {
960 struct hybrid_topology_node *n = &tp->nodes[i];
962 ret = do_write_string(ff, n->pmu_name);
966 ret = do_write_string(ff, n->cpus);
974 hybrid_topology__delete(tp);
978 static int write_dir_format(struct feat_fd *ff,
979 struct evlist *evlist __maybe_unused)
981 struct perf_session *session;
982 struct perf_data *data;
984 session = container_of(ff->ph, struct perf_session, header);
985 data = session->data;
987 if (WARN_ON(!perf_data__is_dir(data)))
990 return do_write(ff, &data->dir.version, sizeof(data->dir.version));
994 * Check whether a CPU is online
997 * 1 -> if CPU is online
998 * 0 -> if CPU is offline
1001 int is_cpu_online(unsigned int cpu)
1007 struct stat statbuf;
1009 snprintf(buf, sizeof(buf),
1010 "/sys/devices/system/cpu/cpu%d", cpu);
1011 if (stat(buf, &statbuf) != 0)
1015 * Check if /sys/devices/system/cpu/cpux/online file
1016 * exists. Some cases cpu0 won't have online file since
1017 * it is not expected to be turned off generally.
1018 * In kernels without CONFIG_HOTPLUG_CPU, this
1021 snprintf(buf, sizeof(buf),
1022 "/sys/devices/system/cpu/cpu%d/online", cpu);
1023 if (stat(buf, &statbuf) != 0)
1027 * Read online file using sysfs__read_str.
1028 * If read or open fails, return -1.
1029 * If read succeeds, return value from file
1030 * which gets stored in "str"
1032 snprintf(buf, sizeof(buf),
1033 "devices/system/cpu/cpu%d/online", cpu);
1035 if (sysfs__read_str(buf, &str, &strlen) < 0)
1044 #ifdef HAVE_LIBBPF_SUPPORT
1045 static int write_bpf_prog_info(struct feat_fd *ff,
1046 struct evlist *evlist __maybe_unused)
1048 struct perf_env *env = &ff->ph->env;
1049 struct rb_root *root;
1050 struct rb_node *next;
1053 down_read(&env->bpf_progs.lock);
1055 ret = do_write(ff, &env->bpf_progs.infos_cnt,
1056 sizeof(env->bpf_progs.infos_cnt));
1060 root = &env->bpf_progs.infos;
1061 next = rb_first(root);
1063 struct bpf_prog_info_node *node;
1066 node = rb_entry(next, struct bpf_prog_info_node, rb_node);
1067 next = rb_next(&node->rb_node);
1068 len = sizeof(struct perf_bpil) +
1069 node->info_linear->data_len;
1071 /* before writing to file, translate address to offset */
1072 bpil_addr_to_offs(node->info_linear);
1073 ret = do_write(ff, node->info_linear, len);
1075 * translate back to address even when do_write() fails,
1076 * so that this function never changes the data.
1078 bpil_offs_to_addr(node->info_linear);
1083 up_read(&env->bpf_progs.lock);
1087 static int write_bpf_btf(struct feat_fd *ff,
1088 struct evlist *evlist __maybe_unused)
1090 struct perf_env *env = &ff->ph->env;
1091 struct rb_root *root;
1092 struct rb_node *next;
1095 down_read(&env->bpf_progs.lock);
1097 ret = do_write(ff, &env->bpf_progs.btfs_cnt,
1098 sizeof(env->bpf_progs.btfs_cnt));
1103 root = &env->bpf_progs.btfs;
1104 next = rb_first(root);
1106 struct btf_node *node;
1108 node = rb_entry(next, struct btf_node, rb_node);
1109 next = rb_next(&node->rb_node);
1110 ret = do_write(ff, &node->id,
1111 sizeof(u32) * 2 + node->data_size);
1116 up_read(&env->bpf_progs.lock);
1119 #endif // HAVE_LIBBPF_SUPPORT
1121 static int cpu_cache_level__sort(const void *a, const void *b)
1123 struct cpu_cache_level *cache_a = (struct cpu_cache_level *)a;
1124 struct cpu_cache_level *cache_b = (struct cpu_cache_level *)b;
1126 return cache_a->level - cache_b->level;
1129 static bool cpu_cache_level__cmp(struct cpu_cache_level *a, struct cpu_cache_level *b)
1131 if (a->level != b->level)
1134 if (a->line_size != b->line_size)
1137 if (a->sets != b->sets)
1140 if (a->ways != b->ways)
1143 if (strcmp(a->type, b->type))
1146 if (strcmp(a->size, b->size))
1149 if (strcmp(a->map, b->map))
1155 static int cpu_cache_level__read(struct cpu_cache_level *cache, u32 cpu, u16 level)
1157 char path[PATH_MAX], file[PATH_MAX];
1161 scnprintf(path, PATH_MAX, "devices/system/cpu/cpu%d/cache/index%d/", cpu, level);
1162 scnprintf(file, PATH_MAX, "%s/%s", sysfs__mountpoint(), path);
1164 if (stat(file, &st))
1167 scnprintf(file, PATH_MAX, "%s/level", path);
1168 if (sysfs__read_int(file, (int *) &cache->level))
1171 scnprintf(file, PATH_MAX, "%s/coherency_line_size", path);
1172 if (sysfs__read_int(file, (int *) &cache->line_size))
1175 scnprintf(file, PATH_MAX, "%s/number_of_sets", path);
1176 if (sysfs__read_int(file, (int *) &cache->sets))
1179 scnprintf(file, PATH_MAX, "%s/ways_of_associativity", path);
1180 if (sysfs__read_int(file, (int *) &cache->ways))
1183 scnprintf(file, PATH_MAX, "%s/type", path);
1184 if (sysfs__read_str(file, &cache->type, &len))
1187 cache->type[len] = 0;
1188 cache->type = strim(cache->type);
1190 scnprintf(file, PATH_MAX, "%s/size", path);
1191 if (sysfs__read_str(file, &cache->size, &len)) {
1192 zfree(&cache->type);
1196 cache->size[len] = 0;
1197 cache->size = strim(cache->size);
1199 scnprintf(file, PATH_MAX, "%s/shared_cpu_list", path);
1200 if (sysfs__read_str(file, &cache->map, &len)) {
1201 zfree(&cache->size);
1202 zfree(&cache->type);
1206 cache->map[len] = 0;
1207 cache->map = strim(cache->map);
1211 static void cpu_cache_level__fprintf(FILE *out, struct cpu_cache_level *c)
1213 fprintf(out, "L%d %-15s %8s [%s]\n", c->level, c->type, c->size, c->map);
1216 #define MAX_CACHE_LVL 4
1218 static int build_caches(struct cpu_cache_level caches[], u32 *cntp)
1224 nr = cpu__max_cpu().cpu;
1226 for (cpu = 0; cpu < nr; cpu++) {
1227 for (level = 0; level < MAX_CACHE_LVL; level++) {
1228 struct cpu_cache_level c;
1231 err = cpu_cache_level__read(&c, cpu, level);
1238 for (i = 0; i < cnt; i++) {
1239 if (cpu_cache_level__cmp(&c, &caches[i]))
1246 cpu_cache_level__free(&c);
1253 static int write_cache(struct feat_fd *ff,
1254 struct evlist *evlist __maybe_unused)
1256 u32 max_caches = cpu__max_cpu().cpu * MAX_CACHE_LVL;
1257 struct cpu_cache_level caches[max_caches];
1258 u32 cnt = 0, i, version = 1;
1261 ret = build_caches(caches, &cnt);
1265 qsort(&caches, cnt, sizeof(struct cpu_cache_level), cpu_cache_level__sort);
1267 ret = do_write(ff, &version, sizeof(u32));
1271 ret = do_write(ff, &cnt, sizeof(u32));
1275 for (i = 0; i < cnt; i++) {
1276 struct cpu_cache_level *c = &caches[i];
1279 ret = do_write(ff, &c->v, sizeof(u32)); \
1290 ret = do_write_string(ff, (const char *) c->v); \
1301 for (i = 0; i < cnt; i++)
1302 cpu_cache_level__free(&caches[i]);
1306 static int write_stat(struct feat_fd *ff __maybe_unused,
1307 struct evlist *evlist __maybe_unused)
1312 static int write_sample_time(struct feat_fd *ff,
1313 struct evlist *evlist)
1317 ret = do_write(ff, &evlist->first_sample_time,
1318 sizeof(evlist->first_sample_time));
1322 return do_write(ff, &evlist->last_sample_time,
1323 sizeof(evlist->last_sample_time));
1327 static int memory_node__read(struct memory_node *n, unsigned long idx)
1329 unsigned int phys, size = 0;
1330 char path[PATH_MAX];
1334 #define for_each_memory(mem, dir) \
1335 while ((ent = readdir(dir))) \
1336 if (strcmp(ent->d_name, ".") && \
1337 strcmp(ent->d_name, "..") && \
1338 sscanf(ent->d_name, "memory%u", &mem) == 1)
1340 scnprintf(path, PATH_MAX,
1341 "%s/devices/system/node/node%lu",
1342 sysfs__mountpoint(), idx);
1344 dir = opendir(path);
1346 pr_warning("failed: can't open memory sysfs data\n");
1350 for_each_memory(phys, dir) {
1351 size = max(phys, size);
1356 n->set = bitmap_zalloc(size);
1367 for_each_memory(phys, dir) {
1368 __set_bit(phys, n->set);
1375 static int memory_node__sort(const void *a, const void *b)
1377 const struct memory_node *na = a;
1378 const struct memory_node *nb = b;
1380 return na->node - nb->node;
1383 static int build_mem_topology(struct memory_node *nodes, u64 size, u64 *cntp)
1385 char path[PATH_MAX];
1391 scnprintf(path, PATH_MAX, "%s/devices/system/node/",
1392 sysfs__mountpoint());
1394 dir = opendir(path);
1396 pr_debug2("%s: couldn't read %s, does this arch have topology information?\n",
1401 while (!ret && (ent = readdir(dir))) {
1405 if (!strcmp(ent->d_name, ".") ||
1406 !strcmp(ent->d_name, ".."))
1409 r = sscanf(ent->d_name, "node%u", &idx);
1413 if (WARN_ONCE(cnt >= size,
1414 "failed to write MEM_TOPOLOGY, way too many nodes\n")) {
1419 ret = memory_node__read(&nodes[cnt++], idx);
1426 qsort(nodes, cnt, sizeof(nodes[0]), memory_node__sort);
1431 #define MAX_MEMORY_NODES 2000
1434 * The MEM_TOPOLOGY holds physical memory map for every
1435 * node in system. The format of data is as follows:
1437 * 0 - version | for future changes
1438 * 8 - block_size_bytes | /sys/devices/system/memory/block_size_bytes
1439 * 16 - count | number of nodes
1441 * For each node we store map of physical indexes for
1444 * 32 - node id | node index
1445 * 40 - size | size of bitmap
1446 * 48 - bitmap | bitmap of memory indexes that belongs to node
1448 static int write_mem_topology(struct feat_fd *ff __maybe_unused,
1449 struct evlist *evlist __maybe_unused)
1451 static struct memory_node nodes[MAX_MEMORY_NODES];
1452 u64 bsize, version = 1, i, nr;
1455 ret = sysfs__read_xll("devices/system/memory/block_size_bytes",
1456 (unsigned long long *) &bsize);
1460 ret = build_mem_topology(&nodes[0], MAX_MEMORY_NODES, &nr);
1464 ret = do_write(ff, &version, sizeof(version));
1468 ret = do_write(ff, &bsize, sizeof(bsize));
1472 ret = do_write(ff, &nr, sizeof(nr));
1476 for (i = 0; i < nr; i++) {
1477 struct memory_node *n = &nodes[i];
1480 ret = do_write(ff, &n->v, sizeof(n->v)); \
1489 ret = do_write_bitmap(ff, n->set, n->size);
1498 static int write_compressed(struct feat_fd *ff __maybe_unused,
1499 struct evlist *evlist __maybe_unused)
1503 ret = do_write(ff, &(ff->ph->env.comp_ver), sizeof(ff->ph->env.comp_ver));
1507 ret = do_write(ff, &(ff->ph->env.comp_type), sizeof(ff->ph->env.comp_type));
1511 ret = do_write(ff, &(ff->ph->env.comp_level), sizeof(ff->ph->env.comp_level));
1515 ret = do_write(ff, &(ff->ph->env.comp_ratio), sizeof(ff->ph->env.comp_ratio));
1519 return do_write(ff, &(ff->ph->env.comp_mmap_len), sizeof(ff->ph->env.comp_mmap_len));
1522 static int __write_pmu_caps(struct feat_fd *ff, struct perf_pmu *pmu,
1525 struct perf_pmu_caps *caps = NULL;
1528 ret = do_write(ff, &pmu->nr_caps, sizeof(pmu->nr_caps));
1532 list_for_each_entry(caps, &pmu->caps, list) {
1533 ret = do_write_string(ff, caps->name);
1537 ret = do_write_string(ff, caps->value);
1543 ret = do_write_string(ff, pmu->name);
1551 static int write_cpu_pmu_caps(struct feat_fd *ff,
1552 struct evlist *evlist __maybe_unused)
1554 struct perf_pmu *cpu_pmu = perf_pmu__find("cpu");
1560 ret = perf_pmu__caps_parse(cpu_pmu);
1564 return __write_pmu_caps(ff, cpu_pmu, false);
1567 static int write_pmu_caps(struct feat_fd *ff,
1568 struct evlist *evlist __maybe_unused)
1570 struct perf_pmu *pmu = NULL;
1574 while ((pmu = perf_pmu__scan(pmu))) {
1575 if (!pmu->name || !strcmp(pmu->name, "cpu") ||
1576 perf_pmu__caps_parse(pmu) <= 0)
1581 ret = do_write(ff, &nr_pmu, sizeof(nr_pmu));
1589 * Write hybrid pmu caps first to maintain compatibility with
1593 perf_pmu__for_each_hybrid_pmu(pmu) {
1594 ret = __write_pmu_caps(ff, pmu, true);
1600 while ((pmu = perf_pmu__scan(pmu))) {
1601 if (!pmu->name || !strcmp(pmu->name, "cpu") ||
1602 !pmu->nr_caps || perf_pmu__is_hybrid(pmu->name))
1605 ret = __write_pmu_caps(ff, pmu, true);
1612 static void print_hostname(struct feat_fd *ff, FILE *fp)
1614 fprintf(fp, "# hostname : %s\n", ff->ph->env.hostname);
1617 static void print_osrelease(struct feat_fd *ff, FILE *fp)
1619 fprintf(fp, "# os release : %s\n", ff->ph->env.os_release);
1622 static void print_arch(struct feat_fd *ff, FILE *fp)
1624 fprintf(fp, "# arch : %s\n", ff->ph->env.arch);
1627 static void print_cpudesc(struct feat_fd *ff, FILE *fp)
1629 fprintf(fp, "# cpudesc : %s\n", ff->ph->env.cpu_desc);
1632 static void print_nrcpus(struct feat_fd *ff, FILE *fp)
1634 fprintf(fp, "# nrcpus online : %u\n", ff->ph->env.nr_cpus_online);
1635 fprintf(fp, "# nrcpus avail : %u\n", ff->ph->env.nr_cpus_avail);
1638 static void print_version(struct feat_fd *ff, FILE *fp)
1640 fprintf(fp, "# perf version : %s\n", ff->ph->env.version);
1643 static void print_cmdline(struct feat_fd *ff, FILE *fp)
1647 nr = ff->ph->env.nr_cmdline;
1649 fprintf(fp, "# cmdline : ");
1651 for (i = 0; i < nr; i++) {
1652 char *argv_i = strdup(ff->ph->env.cmdline_argv[i]);
1654 fprintf(fp, "%s ", ff->ph->env.cmdline_argv[i]);
1658 char *quote = strchr(argv_i, '\'');
1662 fprintf(fp, "%s\\\'", argv_i);
1665 fprintf(fp, "%s ", argv_i);
1672 static void print_cpu_topology(struct feat_fd *ff, FILE *fp)
1674 struct perf_header *ph = ff->ph;
1675 int cpu_nr = ph->env.nr_cpus_avail;
1679 nr = ph->env.nr_sibling_cores;
1680 str = ph->env.sibling_cores;
1682 for (i = 0; i < nr; i++) {
1683 fprintf(fp, "# sibling sockets : %s\n", str);
1684 str += strlen(str) + 1;
1687 if (ph->env.nr_sibling_dies) {
1688 nr = ph->env.nr_sibling_dies;
1689 str = ph->env.sibling_dies;
1691 for (i = 0; i < nr; i++) {
1692 fprintf(fp, "# sibling dies : %s\n", str);
1693 str += strlen(str) + 1;
1697 nr = ph->env.nr_sibling_threads;
1698 str = ph->env.sibling_threads;
1700 for (i = 0; i < nr; i++) {
1701 fprintf(fp, "# sibling threads : %s\n", str);
1702 str += strlen(str) + 1;
1705 if (ph->env.nr_sibling_dies) {
1706 if (ph->env.cpu != NULL) {
1707 for (i = 0; i < cpu_nr; i++)
1708 fprintf(fp, "# CPU %d: Core ID %d, "
1709 "Die ID %d, Socket ID %d\n",
1710 i, ph->env.cpu[i].core_id,
1711 ph->env.cpu[i].die_id,
1712 ph->env.cpu[i].socket_id);
1714 fprintf(fp, "# Core ID, Die ID and Socket ID "
1715 "information is not available\n");
1717 if (ph->env.cpu != NULL) {
1718 for (i = 0; i < cpu_nr; i++)
1719 fprintf(fp, "# CPU %d: Core ID %d, "
1721 i, ph->env.cpu[i].core_id,
1722 ph->env.cpu[i].socket_id);
1724 fprintf(fp, "# Core ID and Socket ID "
1725 "information is not available\n");
1729 static void print_clockid(struct feat_fd *ff, FILE *fp)
1731 fprintf(fp, "# clockid frequency: %"PRIu64" MHz\n",
1732 ff->ph->env.clock.clockid_res_ns * 1000);
1735 static void print_clock_data(struct feat_fd *ff, FILE *fp)
1737 struct timespec clockid_ns;
1738 char tstr[64], date[64];
1739 struct timeval tod_ns;
1744 if (!ff->ph->env.clock.enabled) {
1745 fprintf(fp, "# reference time disabled\n");
1749 /* Compute TOD time. */
1750 ref = ff->ph->env.clock.tod_ns;
1751 tod_ns.tv_sec = ref / NSEC_PER_SEC;
1752 ref -= tod_ns.tv_sec * NSEC_PER_SEC;
1753 tod_ns.tv_usec = ref / NSEC_PER_USEC;
1755 /* Compute clockid time. */
1756 ref = ff->ph->env.clock.clockid_ns;
1757 clockid_ns.tv_sec = ref / NSEC_PER_SEC;
1758 ref -= clockid_ns.tv_sec * NSEC_PER_SEC;
1759 clockid_ns.tv_nsec = ref;
1761 clockid = ff->ph->env.clock.clockid;
1763 if (localtime_r(&tod_ns.tv_sec, <ime) == NULL)
1764 snprintf(tstr, sizeof(tstr), "<error>");
1766 strftime(date, sizeof(date), "%F %T", <ime);
1767 scnprintf(tstr, sizeof(tstr), "%s.%06d",
1768 date, (int) tod_ns.tv_usec);
1771 fprintf(fp, "# clockid: %s (%u)\n", clockid_name(clockid), clockid);
1772 fprintf(fp, "# reference time: %s = %ld.%06d (TOD) = %ld.%09ld (%s)\n",
1773 tstr, (long) tod_ns.tv_sec, (int) tod_ns.tv_usec,
1774 (long) clockid_ns.tv_sec, clockid_ns.tv_nsec,
1775 clockid_name(clockid));
1778 static void print_hybrid_topology(struct feat_fd *ff, FILE *fp)
1781 struct hybrid_node *n;
1783 fprintf(fp, "# hybrid cpu system:\n");
1784 for (i = 0; i < ff->ph->env.nr_hybrid_nodes; i++) {
1785 n = &ff->ph->env.hybrid_nodes[i];
1786 fprintf(fp, "# %s cpu list : %s\n", n->pmu_name, n->cpus);
1790 static void print_dir_format(struct feat_fd *ff, FILE *fp)
1792 struct perf_session *session;
1793 struct perf_data *data;
1795 session = container_of(ff->ph, struct perf_session, header);
1796 data = session->data;
1798 fprintf(fp, "# directory data version : %"PRIu64"\n", data->dir.version);
1801 #ifdef HAVE_LIBBPF_SUPPORT
1802 static void print_bpf_prog_info(struct feat_fd *ff, FILE *fp)
1804 struct perf_env *env = &ff->ph->env;
1805 struct rb_root *root;
1806 struct rb_node *next;
1808 down_read(&env->bpf_progs.lock);
1810 root = &env->bpf_progs.infos;
1811 next = rb_first(root);
1814 struct bpf_prog_info_node *node;
1816 node = rb_entry(next, struct bpf_prog_info_node, rb_node);
1817 next = rb_next(&node->rb_node);
1819 bpf_event__print_bpf_prog_info(&node->info_linear->info,
1823 up_read(&env->bpf_progs.lock);
1826 static void print_bpf_btf(struct feat_fd *ff, FILE *fp)
1828 struct perf_env *env = &ff->ph->env;
1829 struct rb_root *root;
1830 struct rb_node *next;
1832 down_read(&env->bpf_progs.lock);
1834 root = &env->bpf_progs.btfs;
1835 next = rb_first(root);
1838 struct btf_node *node;
1840 node = rb_entry(next, struct btf_node, rb_node);
1841 next = rb_next(&node->rb_node);
1842 fprintf(fp, "# btf info of id %u\n", node->id);
1845 up_read(&env->bpf_progs.lock);
1847 #endif // HAVE_LIBBPF_SUPPORT
1849 static void free_event_desc(struct evsel *events)
1851 struct evsel *evsel;
1856 for (evsel = events; evsel->core.attr.size; evsel++) {
1857 zfree(&evsel->name);
1858 zfree(&evsel->core.id);
1864 static bool perf_attr_check(struct perf_event_attr *attr)
1866 if (attr->__reserved_1 || attr->__reserved_2 || attr->__reserved_3) {
1867 pr_warning("Reserved bits are set unexpectedly. "
1868 "Please update perf tool.\n");
1872 if (attr->sample_type & ~(PERF_SAMPLE_MAX-1)) {
1873 pr_warning("Unknown sample type (0x%llx) is detected. "
1874 "Please update perf tool.\n",
1879 if (attr->read_format & ~(PERF_FORMAT_MAX-1)) {
1880 pr_warning("Unknown read format (0x%llx) is detected. "
1881 "Please update perf tool.\n",
1886 if ((attr->sample_type & PERF_SAMPLE_BRANCH_STACK) &&
1887 (attr->branch_sample_type & ~(PERF_SAMPLE_BRANCH_MAX-1))) {
1888 pr_warning("Unknown branch sample type (0x%llx) is detected. "
1889 "Please update perf tool.\n",
1890 attr->branch_sample_type);
1898 static struct evsel *read_event_desc(struct feat_fd *ff)
1900 struct evsel *evsel, *events = NULL;
1903 u32 nre, sz, nr, i, j;
1906 /* number of events */
1907 if (do_read_u32(ff, &nre))
1910 if (do_read_u32(ff, &sz))
1913 /* buffer to hold on file attr struct */
1918 /* the last event terminates with evsel->core.attr.size == 0: */
1919 events = calloc(nre + 1, sizeof(*events));
1923 msz = sizeof(evsel->core.attr);
1927 for (i = 0, evsel = events; i < nre; evsel++, i++) {
1928 evsel->core.idx = i;
1931 * must read entire on-file attr struct to
1932 * sync up with layout.
1934 if (__do_read(ff, buf, sz))
1937 if (ff->ph->needs_swap)
1938 perf_event__attr_swap(buf);
1940 memcpy(&evsel->core.attr, buf, msz);
1942 if (!perf_attr_check(&evsel->core.attr))
1945 if (do_read_u32(ff, &nr))
1948 if (ff->ph->needs_swap)
1949 evsel->needs_swap = true;
1951 evsel->name = do_read_string(ff);
1958 id = calloc(nr, sizeof(*id));
1961 evsel->core.ids = nr;
1962 evsel->core.id = id;
1964 for (j = 0 ; j < nr; j++) {
1965 if (do_read_u64(ff, id))
1974 free_event_desc(events);
1979 static int __desc_attr__fprintf(FILE *fp, const char *name, const char *val,
1980 void *priv __maybe_unused)
1982 return fprintf(fp, ", %s = %s", name, val);
1985 static void print_event_desc(struct feat_fd *ff, FILE *fp)
1987 struct evsel *evsel, *events;
1992 events = ff->events;
1994 events = read_event_desc(ff);
1997 fprintf(fp, "# event desc: not available or unable to read\n");
2001 for (evsel = events; evsel->core.attr.size; evsel++) {
2002 fprintf(fp, "# event : name = %s, ", evsel->name);
2004 if (evsel->core.ids) {
2005 fprintf(fp, ", id = {");
2006 for (j = 0, id = evsel->core.id; j < evsel->core.ids; j++, id++) {
2009 fprintf(fp, " %"PRIu64, *id);
2014 perf_event_attr__fprintf(fp, &evsel->core.attr, __desc_attr__fprintf, NULL);
2019 free_event_desc(events);
2023 static void print_total_mem(struct feat_fd *ff, FILE *fp)
2025 fprintf(fp, "# total memory : %llu kB\n", ff->ph->env.total_mem);
2028 static void print_numa_topology(struct feat_fd *ff, FILE *fp)
2031 struct numa_node *n;
2033 for (i = 0; i < ff->ph->env.nr_numa_nodes; i++) {
2034 n = &ff->ph->env.numa_nodes[i];
2036 fprintf(fp, "# node%u meminfo : total = %"PRIu64" kB,"
2037 " free = %"PRIu64" kB\n",
2038 n->node, n->mem_total, n->mem_free);
2040 fprintf(fp, "# node%u cpu list : ", n->node);
2041 cpu_map__fprintf(n->map, fp);
2045 static void print_cpuid(struct feat_fd *ff, FILE *fp)
2047 fprintf(fp, "# cpuid : %s\n", ff->ph->env.cpuid);
2050 static void print_branch_stack(struct feat_fd *ff __maybe_unused, FILE *fp)
2052 fprintf(fp, "# contains samples with branch stack\n");
2055 static void print_auxtrace(struct feat_fd *ff __maybe_unused, FILE *fp)
2057 fprintf(fp, "# contains AUX area data (e.g. instruction trace)\n");
2060 static void print_stat(struct feat_fd *ff __maybe_unused, FILE *fp)
2062 fprintf(fp, "# contains stat data\n");
2065 static void print_cache(struct feat_fd *ff, FILE *fp __maybe_unused)
2069 fprintf(fp, "# CPU cache info:\n");
2070 for (i = 0; i < ff->ph->env.caches_cnt; i++) {
2072 cpu_cache_level__fprintf(fp, &ff->ph->env.caches[i]);
2076 static void print_compressed(struct feat_fd *ff, FILE *fp)
2078 fprintf(fp, "# compressed : %s, level = %d, ratio = %d\n",
2079 ff->ph->env.comp_type == PERF_COMP_ZSTD ? "Zstd" : "Unknown",
2080 ff->ph->env.comp_level, ff->ph->env.comp_ratio);
2083 static void __print_pmu_caps(FILE *fp, int nr_caps, char **caps, char *pmu_name)
2085 const char *delimiter = "";
2089 fprintf(fp, "# %s pmu capabilities: not available\n", pmu_name);
2093 fprintf(fp, "# %s pmu capabilities: ", pmu_name);
2094 for (i = 0; i < nr_caps; i++) {
2095 fprintf(fp, "%s%s", delimiter, caps[i]);
2102 static void print_cpu_pmu_caps(struct feat_fd *ff, FILE *fp)
2104 __print_pmu_caps(fp, ff->ph->env.nr_cpu_pmu_caps,
2105 ff->ph->env.cpu_pmu_caps, (char *)"cpu");
2108 static void print_pmu_caps(struct feat_fd *ff, FILE *fp)
2110 struct pmu_caps *pmu_caps;
2112 for (int i = 0; i < ff->ph->env.nr_pmus_with_caps; i++) {
2113 pmu_caps = &ff->ph->env.pmu_caps[i];
2114 __print_pmu_caps(fp, pmu_caps->nr_caps, pmu_caps->caps,
2115 pmu_caps->pmu_name);
2119 static void print_pmu_mappings(struct feat_fd *ff, FILE *fp)
2121 const char *delimiter = "# pmu mappings: ";
2126 pmu_num = ff->ph->env.nr_pmu_mappings;
2128 fprintf(fp, "# pmu mappings: not available\n");
2132 str = ff->ph->env.pmu_mappings;
2135 type = strtoul(str, &tmp, 0);
2140 fprintf(fp, "%s%s = %" PRIu32, delimiter, str, type);
2143 str += strlen(str) + 1;
2152 fprintf(fp, "# pmu mappings: unable to read\n");
2155 static void print_group_desc(struct feat_fd *ff, FILE *fp)
2157 struct perf_session *session;
2158 struct evsel *evsel;
2161 session = container_of(ff->ph, struct perf_session, header);
2163 evlist__for_each_entry(session->evlist, evsel) {
2164 if (evsel__is_group_leader(evsel) && evsel->core.nr_members > 1) {
2165 fprintf(fp, "# group: %s{%s", evsel->group_name ?: "", evsel__name(evsel));
2167 nr = evsel->core.nr_members - 1;
2169 fprintf(fp, ",%s", evsel__name(evsel));
2177 static void print_sample_time(struct feat_fd *ff, FILE *fp)
2179 struct perf_session *session;
2183 session = container_of(ff->ph, struct perf_session, header);
2185 timestamp__scnprintf_usec(session->evlist->first_sample_time,
2186 time_buf, sizeof(time_buf));
2187 fprintf(fp, "# time of first sample : %s\n", time_buf);
2189 timestamp__scnprintf_usec(session->evlist->last_sample_time,
2190 time_buf, sizeof(time_buf));
2191 fprintf(fp, "# time of last sample : %s\n", time_buf);
2193 d = (double)(session->evlist->last_sample_time -
2194 session->evlist->first_sample_time) / NSEC_PER_MSEC;
2196 fprintf(fp, "# sample duration : %10.3f ms\n", d);
2199 static void memory_node__fprintf(struct memory_node *n,
2200 unsigned long long bsize, FILE *fp)
2202 char buf_map[100], buf_size[50];
2203 unsigned long long size;
2205 size = bsize * bitmap_weight(n->set, n->size);
2206 unit_number__scnprintf(buf_size, 50, size);
2208 bitmap_scnprintf(n->set, n->size, buf_map, 100);
2209 fprintf(fp, "# %3" PRIu64 " [%s]: %s\n", n->node, buf_size, buf_map);
2212 static void print_mem_topology(struct feat_fd *ff, FILE *fp)
2214 struct memory_node *nodes;
2217 nodes = ff->ph->env.memory_nodes;
2218 nr = ff->ph->env.nr_memory_nodes;
2220 fprintf(fp, "# memory nodes (nr %d, block size 0x%llx):\n",
2221 nr, ff->ph->env.memory_bsize);
2223 for (i = 0; i < nr; i++) {
2224 memory_node__fprintf(&nodes[i], ff->ph->env.memory_bsize, fp);
2228 static int __event_process_build_id(struct perf_record_header_build_id *bev,
2230 struct perf_session *session)
2233 struct machine *machine;
2236 enum dso_space_type dso_space;
2238 machine = perf_session__findnew_machine(session, bev->pid);
2242 cpumode = bev->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
2245 case PERF_RECORD_MISC_KERNEL:
2246 dso_space = DSO_SPACE__KERNEL;
2248 case PERF_RECORD_MISC_GUEST_KERNEL:
2249 dso_space = DSO_SPACE__KERNEL_GUEST;
2251 case PERF_RECORD_MISC_USER:
2252 case PERF_RECORD_MISC_GUEST_USER:
2253 dso_space = DSO_SPACE__USER;
2259 dso = machine__findnew_dso(machine, filename);
2261 char sbuild_id[SBUILD_ID_SIZE];
2262 struct build_id bid;
2263 size_t size = BUILD_ID_SIZE;
2265 if (bev->header.misc & PERF_RECORD_MISC_BUILD_ID_SIZE)
2268 build_id__init(&bid, bev->data, size);
2269 dso__set_build_id(dso, &bid);
2270 dso->header_build_id = 1;
2272 if (dso_space != DSO_SPACE__USER) {
2273 struct kmod_path m = { .name = NULL, };
2275 if (!kmod_path__parse_name(&m, filename) && m.kmod)
2276 dso__set_module_info(dso, &m, machine);
2278 dso->kernel = dso_space;
2282 build_id__sprintf(&dso->bid, sbuild_id);
2283 pr_debug("build id event received for %s: %s [%zu]\n",
2284 dso->long_name, sbuild_id, size);
2293 static int perf_header__read_build_ids_abi_quirk(struct perf_header *header,
2294 int input, u64 offset, u64 size)
2296 struct perf_session *session = container_of(header, struct perf_session, header);
2298 struct perf_event_header header;
2299 u8 build_id[PERF_ALIGN(BUILD_ID_SIZE, sizeof(u64))];
2302 struct perf_record_header_build_id bev;
2303 char filename[PATH_MAX];
2304 u64 limit = offset + size;
2306 while (offset < limit) {
2309 if (readn(input, &old_bev, sizeof(old_bev)) != sizeof(old_bev))
2312 if (header->needs_swap)
2313 perf_event_header__bswap(&old_bev.header);
2315 len = old_bev.header.size - sizeof(old_bev);
2316 if (readn(input, filename, len) != len)
2319 bev.header = old_bev.header;
2322 * As the pid is the missing value, we need to fill
2323 * it properly. The header.misc value give us nice hint.
2325 bev.pid = HOST_KERNEL_ID;
2326 if (bev.header.misc == PERF_RECORD_MISC_GUEST_USER ||
2327 bev.header.misc == PERF_RECORD_MISC_GUEST_KERNEL)
2328 bev.pid = DEFAULT_GUEST_KERNEL_ID;
2330 memcpy(bev.build_id, old_bev.build_id, sizeof(bev.build_id));
2331 __event_process_build_id(&bev, filename, session);
2333 offset += bev.header.size;
2339 static int perf_header__read_build_ids(struct perf_header *header,
2340 int input, u64 offset, u64 size)
2342 struct perf_session *session = container_of(header, struct perf_session, header);
2343 struct perf_record_header_build_id bev;
2344 char filename[PATH_MAX];
2345 u64 limit = offset + size, orig_offset = offset;
2348 while (offset < limit) {
2351 if (readn(input, &bev, sizeof(bev)) != sizeof(bev))
2354 if (header->needs_swap)
2355 perf_event_header__bswap(&bev.header);
2357 len = bev.header.size - sizeof(bev);
2358 if (readn(input, filename, len) != len)
2361 * The a1645ce1 changeset:
2363 * "perf: 'perf kvm' tool for monitoring guest performance from host"
2365 * Added a field to struct perf_record_header_build_id that broke the file
2368 * Since the kernel build-id is the first entry, process the
2369 * table using the old format if the well known
2370 * '[kernel.kallsyms]' string for the kernel build-id has the
2371 * first 4 characters chopped off (where the pid_t sits).
2373 if (memcmp(filename, "nel.kallsyms]", 13) == 0) {
2374 if (lseek(input, orig_offset, SEEK_SET) == (off_t)-1)
2376 return perf_header__read_build_ids_abi_quirk(header, input, offset, size);
2379 __event_process_build_id(&bev, filename, session);
2381 offset += bev.header.size;
2388 /* Macro for features that simply need to read and store a string. */
2389 #define FEAT_PROCESS_STR_FUN(__feat, __feat_env) \
2390 static int process_##__feat(struct feat_fd *ff, void *data __maybe_unused) \
2392 free(ff->ph->env.__feat_env); \
2393 ff->ph->env.__feat_env = do_read_string(ff); \
2394 return ff->ph->env.__feat_env ? 0 : -ENOMEM; \
2397 FEAT_PROCESS_STR_FUN(hostname, hostname);
2398 FEAT_PROCESS_STR_FUN(osrelease, os_release);
2399 FEAT_PROCESS_STR_FUN(version, version);
2400 FEAT_PROCESS_STR_FUN(arch, arch);
2401 FEAT_PROCESS_STR_FUN(cpudesc, cpu_desc);
2402 FEAT_PROCESS_STR_FUN(cpuid, cpuid);
2404 #ifdef HAVE_LIBTRACEEVENT
2405 static int process_tracing_data(struct feat_fd *ff, void *data)
2407 ssize_t ret = trace_report(ff->fd, data, false);
2409 return ret < 0 ? -1 : 0;
2413 static int process_build_id(struct feat_fd *ff, void *data __maybe_unused)
2415 if (perf_header__read_build_ids(ff->ph, ff->fd, ff->offset, ff->size))
2416 pr_debug("Failed to read buildids, continuing...\n");
2420 static int process_nrcpus(struct feat_fd *ff, void *data __maybe_unused)
2423 u32 nr_cpus_avail, nr_cpus_online;
2425 ret = do_read_u32(ff, &nr_cpus_avail);
2429 ret = do_read_u32(ff, &nr_cpus_online);
2432 ff->ph->env.nr_cpus_avail = (int)nr_cpus_avail;
2433 ff->ph->env.nr_cpus_online = (int)nr_cpus_online;
2437 static int process_total_mem(struct feat_fd *ff, void *data __maybe_unused)
2442 ret = do_read_u64(ff, &total_mem);
2445 ff->ph->env.total_mem = (unsigned long long)total_mem;
2449 static struct evsel *evlist__find_by_index(struct evlist *evlist, int idx)
2451 struct evsel *evsel;
2453 evlist__for_each_entry(evlist, evsel) {
2454 if (evsel->core.idx == idx)
2461 static void evlist__set_event_name(struct evlist *evlist, struct evsel *event)
2463 struct evsel *evsel;
2468 evsel = evlist__find_by_index(evlist, event->core.idx);
2475 evsel->name = strdup(event->name);
2479 process_event_desc(struct feat_fd *ff, void *data __maybe_unused)
2481 struct perf_session *session;
2482 struct evsel *evsel, *events = read_event_desc(ff);
2487 session = container_of(ff->ph, struct perf_session, header);
2489 if (session->data->is_pipe) {
2490 /* Save events for reading later by print_event_desc,
2491 * since they can't be read again in pipe mode. */
2492 ff->events = events;
2495 for (evsel = events; evsel->core.attr.size; evsel++)
2496 evlist__set_event_name(session->evlist, evsel);
2498 if (!session->data->is_pipe)
2499 free_event_desc(events);
2504 static int process_cmdline(struct feat_fd *ff, void *data __maybe_unused)
2506 char *str, *cmdline = NULL, **argv = NULL;
2509 if (do_read_u32(ff, &nr))
2512 ff->ph->env.nr_cmdline = nr;
2514 cmdline = zalloc(ff->size + nr + 1);
2518 argv = zalloc(sizeof(char *) * (nr + 1));
2522 for (i = 0; i < nr; i++) {
2523 str = do_read_string(ff);
2527 argv[i] = cmdline + len;
2528 memcpy(argv[i], str, strlen(str) + 1);
2529 len += strlen(str) + 1;
2532 ff->ph->env.cmdline = cmdline;
2533 ff->ph->env.cmdline_argv = (const char **) argv;
2542 static int process_cpu_topology(struct feat_fd *ff, void *data __maybe_unused)
2547 int cpu_nr = ff->ph->env.nr_cpus_avail;
2549 struct perf_header *ph = ff->ph;
2550 bool do_core_id_test = true;
2552 ph->env.cpu = calloc(cpu_nr, sizeof(*ph->env.cpu));
2556 if (do_read_u32(ff, &nr))
2559 ph->env.nr_sibling_cores = nr;
2560 size += sizeof(u32);
2561 if (strbuf_init(&sb, 128) < 0)
2564 for (i = 0; i < nr; i++) {
2565 str = do_read_string(ff);
2569 /* include a NULL character at the end */
2570 if (strbuf_add(&sb, str, strlen(str) + 1) < 0)
2572 size += string_size(str);
2575 ph->env.sibling_cores = strbuf_detach(&sb, NULL);
2577 if (do_read_u32(ff, &nr))
2580 ph->env.nr_sibling_threads = nr;
2581 size += sizeof(u32);
2583 for (i = 0; i < nr; i++) {
2584 str = do_read_string(ff);
2588 /* include a NULL character at the end */
2589 if (strbuf_add(&sb, str, strlen(str) + 1) < 0)
2591 size += string_size(str);
2594 ph->env.sibling_threads = strbuf_detach(&sb, NULL);
2597 * The header may be from old perf,
2598 * which doesn't include core id and socket id information.
2600 if (ff->size <= size) {
2601 zfree(&ph->env.cpu);
2605 /* On s390 the socket_id number is not related to the numbers of cpus.
2606 * The socket_id number might be higher than the numbers of cpus.
2607 * This depends on the configuration.
2608 * AArch64 is the same.
2610 if (ph->env.arch && (!strncmp(ph->env.arch, "s390", 4)
2611 || !strncmp(ph->env.arch, "aarch64", 7)))
2612 do_core_id_test = false;
2614 for (i = 0; i < (u32)cpu_nr; i++) {
2615 if (do_read_u32(ff, &nr))
2618 ph->env.cpu[i].core_id = nr;
2619 size += sizeof(u32);
2621 if (do_read_u32(ff, &nr))
2624 if (do_core_id_test && nr != (u32)-1 && nr > (u32)cpu_nr) {
2625 pr_debug("socket_id number is too big."
2626 "You may need to upgrade the perf tool.\n");
2630 ph->env.cpu[i].socket_id = nr;
2631 size += sizeof(u32);
2635 * The header may be from old perf,
2636 * which doesn't include die information.
2638 if (ff->size <= size)
2641 if (do_read_u32(ff, &nr))
2644 ph->env.nr_sibling_dies = nr;
2645 size += sizeof(u32);
2647 for (i = 0; i < nr; i++) {
2648 str = do_read_string(ff);
2652 /* include a NULL character at the end */
2653 if (strbuf_add(&sb, str, strlen(str) + 1) < 0)
2655 size += string_size(str);
2658 ph->env.sibling_dies = strbuf_detach(&sb, NULL);
2660 for (i = 0; i < (u32)cpu_nr; i++) {
2661 if (do_read_u32(ff, &nr))
2664 ph->env.cpu[i].die_id = nr;
2670 strbuf_release(&sb);
2672 zfree(&ph->env.cpu);
2676 static int process_numa_topology(struct feat_fd *ff, void *data __maybe_unused)
2678 struct numa_node *nodes, *n;
2683 if (do_read_u32(ff, &nr))
2686 nodes = zalloc(sizeof(*nodes) * nr);
2690 for (i = 0; i < nr; i++) {
2694 if (do_read_u32(ff, &n->node))
2697 if (do_read_u64(ff, &n->mem_total))
2700 if (do_read_u64(ff, &n->mem_free))
2703 str = do_read_string(ff);
2707 n->map = perf_cpu_map__new(str);
2713 ff->ph->env.nr_numa_nodes = nr;
2714 ff->ph->env.numa_nodes = nodes;
2722 static int process_pmu_mappings(struct feat_fd *ff, void *data __maybe_unused)
2729 if (do_read_u32(ff, &pmu_num))
2733 pr_debug("pmu mappings not available\n");
2737 ff->ph->env.nr_pmu_mappings = pmu_num;
2738 if (strbuf_init(&sb, 128) < 0)
2742 if (do_read_u32(ff, &type))
2745 name = do_read_string(ff);
2749 if (strbuf_addf(&sb, "%u:%s", type, name) < 0)
2751 /* include a NULL character at the end */
2752 if (strbuf_add(&sb, "", 1) < 0)
2755 if (!strcmp(name, "msr"))
2756 ff->ph->env.msr_pmu_type = type;
2761 ff->ph->env.pmu_mappings = strbuf_detach(&sb, NULL);
2765 strbuf_release(&sb);
2769 static int process_group_desc(struct feat_fd *ff, void *data __maybe_unused)
2772 u32 i, nr, nr_groups;
2773 struct perf_session *session;
2774 struct evsel *evsel, *leader = NULL;
2781 if (do_read_u32(ff, &nr_groups))
2784 ff->ph->env.nr_groups = nr_groups;
2786 pr_debug("group desc not available\n");
2790 desc = calloc(nr_groups, sizeof(*desc));
2794 for (i = 0; i < nr_groups; i++) {
2795 desc[i].name = do_read_string(ff);
2799 if (do_read_u32(ff, &desc[i].leader_idx))
2802 if (do_read_u32(ff, &desc[i].nr_members))
2807 * Rebuild group relationship based on the group_desc
2809 session = container_of(ff->ph, struct perf_session, header);
2810 session->evlist->core.nr_groups = nr_groups;
2813 evlist__for_each_entry(session->evlist, evsel) {
2814 if (evsel->core.idx == (int) desc[i].leader_idx) {
2815 evsel__set_leader(evsel, evsel);
2816 /* {anon_group} is a dummy name */
2817 if (strcmp(desc[i].name, "{anon_group}")) {
2818 evsel->group_name = desc[i].name;
2819 desc[i].name = NULL;
2821 evsel->core.nr_members = desc[i].nr_members;
2823 if (i >= nr_groups || nr > 0) {
2824 pr_debug("invalid group desc\n");
2829 nr = evsel->core.nr_members - 1;
2832 /* This is a group member */
2833 evsel__set_leader(evsel, leader);
2839 if (i != nr_groups || nr != 0) {
2840 pr_debug("invalid group desc\n");
2846 for (i = 0; i < nr_groups; i++)
2847 zfree(&desc[i].name);
2853 static int process_auxtrace(struct feat_fd *ff, void *data __maybe_unused)
2855 struct perf_session *session;
2858 session = container_of(ff->ph, struct perf_session, header);
2860 err = auxtrace_index__process(ff->fd, ff->size, session,
2861 ff->ph->needs_swap);
2863 pr_err("Failed to process auxtrace index\n");
2867 static int process_cache(struct feat_fd *ff, void *data __maybe_unused)
2869 struct cpu_cache_level *caches;
2870 u32 cnt, i, version;
2872 if (do_read_u32(ff, &version))
2878 if (do_read_u32(ff, &cnt))
2881 caches = zalloc(sizeof(*caches) * cnt);
2885 for (i = 0; i < cnt; i++) {
2886 struct cpu_cache_level c;
2889 if (do_read_u32(ff, &c.v))\
2890 goto out_free_caches; \
2899 c.v = do_read_string(ff); \
2901 goto out_free_caches;
2911 ff->ph->env.caches = caches;
2912 ff->ph->env.caches_cnt = cnt;
2919 static int process_sample_time(struct feat_fd *ff, void *data __maybe_unused)
2921 struct perf_session *session;
2922 u64 first_sample_time, last_sample_time;
2925 session = container_of(ff->ph, struct perf_session, header);
2927 ret = do_read_u64(ff, &first_sample_time);
2931 ret = do_read_u64(ff, &last_sample_time);
2935 session->evlist->first_sample_time = first_sample_time;
2936 session->evlist->last_sample_time = last_sample_time;
2940 static int process_mem_topology(struct feat_fd *ff,
2941 void *data __maybe_unused)
2943 struct memory_node *nodes;
2944 u64 version, i, nr, bsize;
2947 if (do_read_u64(ff, &version))
2953 if (do_read_u64(ff, &bsize))
2956 if (do_read_u64(ff, &nr))
2959 nodes = zalloc(sizeof(*nodes) * nr);
2963 for (i = 0; i < nr; i++) {
2964 struct memory_node n;
2967 if (do_read_u64(ff, &n.v)) \
2975 if (do_read_bitmap(ff, &n.set, &n.size))
2981 ff->ph->env.memory_bsize = bsize;
2982 ff->ph->env.memory_nodes = nodes;
2983 ff->ph->env.nr_memory_nodes = nr;
2992 static int process_clockid(struct feat_fd *ff,
2993 void *data __maybe_unused)
2995 if (do_read_u64(ff, &ff->ph->env.clock.clockid_res_ns))
3001 static int process_clock_data(struct feat_fd *ff,
3002 void *_data __maybe_unused)
3008 if (do_read_u32(ff, &data32))
3015 if (do_read_u32(ff, &data32))
3018 ff->ph->env.clock.clockid = data32;
3021 if (do_read_u64(ff, &data64))
3024 ff->ph->env.clock.tod_ns = data64;
3026 /* clockid ref time */
3027 if (do_read_u64(ff, &data64))
3030 ff->ph->env.clock.clockid_ns = data64;
3031 ff->ph->env.clock.enabled = true;
3035 static int process_hybrid_topology(struct feat_fd *ff,
3036 void *data __maybe_unused)
3038 struct hybrid_node *nodes, *n;
3042 if (do_read_u32(ff, &nr))
3045 nodes = zalloc(sizeof(*nodes) * nr);
3049 for (i = 0; i < nr; i++) {
3052 n->pmu_name = do_read_string(ff);
3056 n->cpus = do_read_string(ff);
3061 ff->ph->env.nr_hybrid_nodes = nr;
3062 ff->ph->env.hybrid_nodes = nodes;
3066 for (i = 0; i < nr; i++) {
3067 free(nodes[i].pmu_name);
3068 free(nodes[i].cpus);
3075 static int process_dir_format(struct feat_fd *ff,
3076 void *_data __maybe_unused)
3078 struct perf_session *session;
3079 struct perf_data *data;
3081 session = container_of(ff->ph, struct perf_session, header);
3082 data = session->data;
3084 if (WARN_ON(!perf_data__is_dir(data)))
3087 return do_read_u64(ff, &data->dir.version);
3090 #ifdef HAVE_LIBBPF_SUPPORT
3091 static int process_bpf_prog_info(struct feat_fd *ff, void *data __maybe_unused)
3093 struct bpf_prog_info_node *info_node;
3094 struct perf_env *env = &ff->ph->env;
3095 struct perf_bpil *info_linear;
3099 if (ff->ph->needs_swap) {
3100 pr_warning("interpreting bpf_prog_info from systems with endianness is not yet supported\n");
3104 if (do_read_u32(ff, &count))
3107 down_write(&env->bpf_progs.lock);
3109 for (i = 0; i < count; ++i) {
3110 u32 info_len, data_len;
3114 if (do_read_u32(ff, &info_len))
3116 if (do_read_u32(ff, &data_len))
3119 if (info_len > sizeof(struct bpf_prog_info)) {
3120 pr_warning("detected invalid bpf_prog_info\n");
3124 info_linear = malloc(sizeof(struct perf_bpil) +
3128 info_linear->info_len = sizeof(struct bpf_prog_info);
3129 info_linear->data_len = data_len;
3130 if (do_read_u64(ff, (u64 *)(&info_linear->arrays)))
3132 if (__do_read(ff, &info_linear->info, info_len))
3134 if (info_len < sizeof(struct bpf_prog_info))
3135 memset(((void *)(&info_linear->info)) + info_len, 0,
3136 sizeof(struct bpf_prog_info) - info_len);
3138 if (__do_read(ff, info_linear->data, data_len))
3141 info_node = malloc(sizeof(struct bpf_prog_info_node));
3145 /* after reading from file, translate offset to address */
3146 bpil_offs_to_addr(info_linear);
3147 info_node->info_linear = info_linear;
3148 perf_env__insert_bpf_prog_info(env, info_node);
3151 up_write(&env->bpf_progs.lock);
3156 up_write(&env->bpf_progs.lock);
3160 static int process_bpf_btf(struct feat_fd *ff, void *data __maybe_unused)
3162 struct perf_env *env = &ff->ph->env;
3163 struct btf_node *node = NULL;
3167 if (ff->ph->needs_swap) {
3168 pr_warning("interpreting btf from systems with endianness is not yet supported\n");
3172 if (do_read_u32(ff, &count))
3175 down_write(&env->bpf_progs.lock);
3177 for (i = 0; i < count; ++i) {
3180 if (do_read_u32(ff, &id))
3182 if (do_read_u32(ff, &data_size))
3185 node = malloc(sizeof(struct btf_node) + data_size);
3190 node->data_size = data_size;
3192 if (__do_read(ff, node->data, data_size))
3195 perf_env__insert_btf(env, node);
3201 up_write(&env->bpf_progs.lock);
3205 #endif // HAVE_LIBBPF_SUPPORT
3207 static int process_compressed(struct feat_fd *ff,
3208 void *data __maybe_unused)
3210 if (do_read_u32(ff, &(ff->ph->env.comp_ver)))
3213 if (do_read_u32(ff, &(ff->ph->env.comp_type)))
3216 if (do_read_u32(ff, &(ff->ph->env.comp_level)))
3219 if (do_read_u32(ff, &(ff->ph->env.comp_ratio)))
3222 if (do_read_u32(ff, &(ff->ph->env.comp_mmap_len)))
3228 static int __process_pmu_caps(struct feat_fd *ff, int *nr_caps,
3229 char ***caps, unsigned int *max_branches)
3231 char *name, *value, *ptr;
3237 if (do_read_u32(ff, &nr_pmu_caps))
3243 *caps = zalloc(sizeof(char *) * nr_pmu_caps);
3247 for (i = 0; i < nr_pmu_caps; i++) {
3248 name = do_read_string(ff);
3252 value = do_read_string(ff);
3256 if (asprintf(&ptr, "%s=%s", name, value) < 0)
3261 if (!strcmp(name, "branches"))
3262 *max_branches = atoi(value);
3267 *nr_caps = nr_pmu_caps;
3276 free((*caps)[i - 1]);
3283 static int process_cpu_pmu_caps(struct feat_fd *ff,
3284 void *data __maybe_unused)
3286 int ret = __process_pmu_caps(ff, &ff->ph->env.nr_cpu_pmu_caps,
3287 &ff->ph->env.cpu_pmu_caps,
3288 &ff->ph->env.max_branches);
3290 if (!ret && !ff->ph->env.cpu_pmu_caps)
3291 pr_debug("cpu pmu capabilities not available\n");
3295 static int process_pmu_caps(struct feat_fd *ff, void *data __maybe_unused)
3297 struct pmu_caps *pmu_caps;
3302 if (do_read_u32(ff, &nr_pmu))
3306 pr_debug("pmu capabilities not available\n");
3310 pmu_caps = zalloc(sizeof(*pmu_caps) * nr_pmu);
3314 for (i = 0; i < nr_pmu; i++) {
3315 ret = __process_pmu_caps(ff, &pmu_caps[i].nr_caps,
3317 &pmu_caps[i].max_branches);
3321 pmu_caps[i].pmu_name = do_read_string(ff);
3322 if (!pmu_caps[i].pmu_name) {
3326 if (!pmu_caps[i].nr_caps) {
3327 pr_debug("%s pmu capabilities not available\n",
3328 pmu_caps[i].pmu_name);
3332 ff->ph->env.nr_pmus_with_caps = nr_pmu;
3333 ff->ph->env.pmu_caps = pmu_caps;
3337 for (i = 0; i < nr_pmu; i++) {
3338 for (j = 0; j < pmu_caps[i].nr_caps; j++)
3339 free(pmu_caps[i].caps[j]);
3340 free(pmu_caps[i].caps);
3341 free(pmu_caps[i].pmu_name);
3348 #define FEAT_OPR(n, func, __full_only) \
3350 .name = __stringify(n), \
3351 .write = write_##func, \
3352 .print = print_##func, \
3353 .full_only = __full_only, \
3354 .process = process_##func, \
3355 .synthesize = true \
3358 #define FEAT_OPN(n, func, __full_only) \
3360 .name = __stringify(n), \
3361 .write = write_##func, \
3362 .print = print_##func, \
3363 .full_only = __full_only, \
3364 .process = process_##func \
3367 /* feature_ops not implemented: */
3368 #define print_tracing_data NULL
3369 #define print_build_id NULL
3371 #define process_branch_stack NULL
3372 #define process_stat NULL
3374 // Only used in util/synthetic-events.c
3375 const struct perf_header_feature_ops feat_ops[HEADER_LAST_FEATURE];
3377 const struct perf_header_feature_ops feat_ops[HEADER_LAST_FEATURE] = {
3378 #ifdef HAVE_LIBTRACEEVENT
3379 FEAT_OPN(TRACING_DATA, tracing_data, false),
3381 FEAT_OPN(BUILD_ID, build_id, false),
3382 FEAT_OPR(HOSTNAME, hostname, false),
3383 FEAT_OPR(OSRELEASE, osrelease, false),
3384 FEAT_OPR(VERSION, version, false),
3385 FEAT_OPR(ARCH, arch, false),
3386 FEAT_OPR(NRCPUS, nrcpus, false),
3387 FEAT_OPR(CPUDESC, cpudesc, false),
3388 FEAT_OPR(CPUID, cpuid, false),
3389 FEAT_OPR(TOTAL_MEM, total_mem, false),
3390 FEAT_OPR(EVENT_DESC, event_desc, false),
3391 FEAT_OPR(CMDLINE, cmdline, false),
3392 FEAT_OPR(CPU_TOPOLOGY, cpu_topology, true),
3393 FEAT_OPR(NUMA_TOPOLOGY, numa_topology, true),
3394 FEAT_OPN(BRANCH_STACK, branch_stack, false),
3395 FEAT_OPR(PMU_MAPPINGS, pmu_mappings, false),
3396 FEAT_OPR(GROUP_DESC, group_desc, false),
3397 FEAT_OPN(AUXTRACE, auxtrace, false),
3398 FEAT_OPN(STAT, stat, false),
3399 FEAT_OPN(CACHE, cache, true),
3400 FEAT_OPR(SAMPLE_TIME, sample_time, false),
3401 FEAT_OPR(MEM_TOPOLOGY, mem_topology, true),
3402 FEAT_OPR(CLOCKID, clockid, false),
3403 FEAT_OPN(DIR_FORMAT, dir_format, false),
3404 #ifdef HAVE_LIBBPF_SUPPORT
3405 FEAT_OPR(BPF_PROG_INFO, bpf_prog_info, false),
3406 FEAT_OPR(BPF_BTF, bpf_btf, false),
3408 FEAT_OPR(COMPRESSED, compressed, false),
3409 FEAT_OPR(CPU_PMU_CAPS, cpu_pmu_caps, false),
3410 FEAT_OPR(CLOCK_DATA, clock_data, false),
3411 FEAT_OPN(HYBRID_TOPOLOGY, hybrid_topology, true),
3412 FEAT_OPR(PMU_CAPS, pmu_caps, false),
3415 struct header_print_data {
3417 bool full; /* extended list of headers */
3420 static int perf_file_section__fprintf_info(struct perf_file_section *section,
3421 struct perf_header *ph,
3422 int feat, int fd, void *data)
3424 struct header_print_data *hd = data;
3427 if (lseek(fd, section->offset, SEEK_SET) == (off_t)-1) {
3428 pr_debug("Failed to lseek to %" PRIu64 " offset for feature "
3429 "%d, continuing...\n", section->offset, feat);
3432 if (feat >= HEADER_LAST_FEATURE) {
3433 pr_warning("unknown feature %d\n", feat);
3436 if (!feat_ops[feat].print)
3439 ff = (struct feat_fd) {
3444 if (!feat_ops[feat].full_only || hd->full)
3445 feat_ops[feat].print(&ff, hd->fp);
3447 fprintf(hd->fp, "# %s info available, use -I to display\n",
3448 feat_ops[feat].name);
3453 int perf_header__fprintf_info(struct perf_session *session, FILE *fp, bool full)
3455 struct header_print_data hd;
3456 struct perf_header *header = &session->header;
3457 int fd = perf_data__fd(session->data);
3465 ret = fstat(fd, &st);
3469 stctime = st.st_mtime;
3470 fprintf(fp, "# captured on : %s", ctime(&stctime));
3472 fprintf(fp, "# header version : %u\n", header->version);
3473 fprintf(fp, "# data offset : %" PRIu64 "\n", header->data_offset);
3474 fprintf(fp, "# data size : %" PRIu64 "\n", header->data_size);
3475 fprintf(fp, "# feat offset : %" PRIu64 "\n", header->feat_offset);
3477 perf_header__process_sections(header, fd, &hd,
3478 perf_file_section__fprintf_info);
3480 if (session->data->is_pipe)
3483 fprintf(fp, "# missing features: ");
3484 for_each_clear_bit(bit, header->adds_features, HEADER_LAST_FEATURE) {
3486 fprintf(fp, "%s ", feat_ops[bit].name);
3494 struct feat_writer fw;
3498 static int feat_writer_cb(struct feat_writer *fw, void *buf, size_t sz)
3500 struct header_fw *h = container_of(fw, struct header_fw, fw);
3502 return do_write(h->ff, buf, sz);
3505 static int do_write_feat(struct feat_fd *ff, int type,
3506 struct perf_file_section **p,
3507 struct evlist *evlist,
3508 struct feat_copier *fc)
3513 if (perf_header__has_feat(ff->ph, type)) {
3514 if (!feat_ops[type].write)
3517 if (WARN(ff->buf, "Error: calling %s in pipe-mode.\n", __func__))
3520 (*p)->offset = lseek(ff->fd, 0, SEEK_CUR);
3523 * Hook to let perf inject copy features sections from the input
3526 if (fc && fc->copy) {
3527 struct header_fw h = {
3528 .fw.write = feat_writer_cb,
3532 /* ->copy() returns 0 if the feature was not copied */
3533 err = fc->copy(fc, type, &h.fw);
3538 err = feat_ops[type].write(ff, evlist);
3540 pr_debug("failed to write feature %s\n", feat_ops[type].name);
3542 /* undo anything written */
3543 lseek(ff->fd, (*p)->offset, SEEK_SET);
3547 (*p)->size = lseek(ff->fd, 0, SEEK_CUR) - (*p)->offset;
3553 static int perf_header__adds_write(struct perf_header *header,
3554 struct evlist *evlist, int fd,
3555 struct feat_copier *fc)
3559 struct perf_file_section *feat_sec, *p;
3565 ff = (struct feat_fd){
3570 nr_sections = bitmap_weight(header->adds_features, HEADER_FEAT_BITS);
3574 feat_sec = p = calloc(nr_sections, sizeof(*feat_sec));
3575 if (feat_sec == NULL)
3578 sec_size = sizeof(*feat_sec) * nr_sections;
3580 sec_start = header->feat_offset;
3581 lseek(fd, sec_start + sec_size, SEEK_SET);
3583 for_each_set_bit(feat, header->adds_features, HEADER_FEAT_BITS) {
3584 if (do_write_feat(&ff, feat, &p, evlist, fc))
3585 perf_header__clear_feat(header, feat);
3588 lseek(fd, sec_start, SEEK_SET);
3590 * may write more than needed due to dropped feature, but
3591 * this is okay, reader will skip the missing entries
3593 err = do_write(&ff, feat_sec, sec_size);
3595 pr_debug("failed to write feature section\n");
3600 int perf_header__write_pipe(int fd)
3602 struct perf_pipe_file_header f_header;
3606 ff = (struct feat_fd){ .fd = fd };
3608 f_header = (struct perf_pipe_file_header){
3609 .magic = PERF_MAGIC,
3610 .size = sizeof(f_header),
3613 err = do_write(&ff, &f_header, sizeof(f_header));
3615 pr_debug("failed to write perf pipe header\n");
3622 static int perf_session__do_write_header(struct perf_session *session,
3623 struct evlist *evlist,
3624 int fd, bool at_exit,
3625 struct feat_copier *fc)
3627 struct perf_file_header f_header;
3628 struct perf_file_attr f_attr;
3629 struct perf_header *header = &session->header;
3630 struct evsel *evsel;
3635 ff = (struct feat_fd){ .fd = fd};
3636 lseek(fd, sizeof(f_header), SEEK_SET);
3638 evlist__for_each_entry(session->evlist, evsel) {
3639 evsel->id_offset = lseek(fd, 0, SEEK_CUR);
3640 err = do_write(&ff, evsel->core.id, evsel->core.ids * sizeof(u64));
3642 pr_debug("failed to write perf header\n");
3647 attr_offset = lseek(ff.fd, 0, SEEK_CUR);
3649 evlist__for_each_entry(evlist, evsel) {
3650 if (evsel->core.attr.size < sizeof(evsel->core.attr)) {
3652 * We are likely in "perf inject" and have read
3653 * from an older file. Update attr size so that
3654 * reader gets the right offset to the ids.
3656 evsel->core.attr.size = sizeof(evsel->core.attr);
3658 f_attr = (struct perf_file_attr){
3659 .attr = evsel->core.attr,
3661 .offset = evsel->id_offset,
3662 .size = evsel->core.ids * sizeof(u64),
3665 err = do_write(&ff, &f_attr, sizeof(f_attr));
3667 pr_debug("failed to write perf header attribute\n");
3672 if (!header->data_offset)
3673 header->data_offset = lseek(fd, 0, SEEK_CUR);
3674 header->feat_offset = header->data_offset + header->data_size;
3677 err = perf_header__adds_write(header, evlist, fd, fc);
3682 f_header = (struct perf_file_header){
3683 .magic = PERF_MAGIC,
3684 .size = sizeof(f_header),
3685 .attr_size = sizeof(f_attr),
3687 .offset = attr_offset,
3688 .size = evlist->core.nr_entries * sizeof(f_attr),
3691 .offset = header->data_offset,
3692 .size = header->data_size,
3694 /* event_types is ignored, store zeros */
3697 memcpy(&f_header.adds_features, &header->adds_features, sizeof(header->adds_features));
3699 lseek(fd, 0, SEEK_SET);
3700 err = do_write(&ff, &f_header, sizeof(f_header));
3702 pr_debug("failed to write perf header\n");
3705 lseek(fd, header->data_offset + header->data_size, SEEK_SET);
3710 int perf_session__write_header(struct perf_session *session,
3711 struct evlist *evlist,
3712 int fd, bool at_exit)
3714 return perf_session__do_write_header(session, evlist, fd, at_exit, NULL);
3717 size_t perf_session__data_offset(const struct evlist *evlist)
3719 struct evsel *evsel;
3722 data_offset = sizeof(struct perf_file_header);
3723 evlist__for_each_entry(evlist, evsel) {
3724 data_offset += evsel->core.ids * sizeof(u64);
3726 data_offset += evlist->core.nr_entries * sizeof(struct perf_file_attr);
3731 int perf_session__inject_header(struct perf_session *session,
3732 struct evlist *evlist,
3734 struct feat_copier *fc)
3736 return perf_session__do_write_header(session, evlist, fd, true, fc);
3739 static int perf_header__getbuffer64(struct perf_header *header,
3740 int fd, void *buf, size_t size)
3742 if (readn(fd, buf, size) <= 0)
3745 if (header->needs_swap)
3746 mem_bswap_64(buf, size);
3751 int perf_header__process_sections(struct perf_header *header, int fd,
3753 int (*process)(struct perf_file_section *section,
3754 struct perf_header *ph,
3755 int feat, int fd, void *data))
3757 struct perf_file_section *feat_sec, *sec;
3763 nr_sections = bitmap_weight(header->adds_features, HEADER_FEAT_BITS);
3767 feat_sec = sec = calloc(nr_sections, sizeof(*feat_sec));
3771 sec_size = sizeof(*feat_sec) * nr_sections;
3773 lseek(fd, header->feat_offset, SEEK_SET);
3775 err = perf_header__getbuffer64(header, fd, feat_sec, sec_size);
3779 for_each_set_bit(feat, header->adds_features, HEADER_LAST_FEATURE) {
3780 err = process(sec++, header, feat, fd, data);
3790 static const int attr_file_abi_sizes[] = {
3791 [0] = PERF_ATTR_SIZE_VER0,
3792 [1] = PERF_ATTR_SIZE_VER1,
3793 [2] = PERF_ATTR_SIZE_VER2,
3794 [3] = PERF_ATTR_SIZE_VER3,
3795 [4] = PERF_ATTR_SIZE_VER4,
3800 * In the legacy file format, the magic number is not used to encode endianness.
3801 * hdr_sz was used to encode endianness. But given that hdr_sz can vary based
3802 * on ABI revisions, we need to try all combinations for all endianness to
3803 * detect the endianness.
3805 static int try_all_file_abis(uint64_t hdr_sz, struct perf_header *ph)
3807 uint64_t ref_size, attr_size;
3810 for (i = 0 ; attr_file_abi_sizes[i]; i++) {
3811 ref_size = attr_file_abi_sizes[i]
3812 + sizeof(struct perf_file_section);
3813 if (hdr_sz != ref_size) {
3814 attr_size = bswap_64(hdr_sz);
3815 if (attr_size != ref_size)
3818 ph->needs_swap = true;
3820 pr_debug("ABI%d perf.data file detected, need_swap=%d\n",
3825 /* could not determine endianness */
3829 #define PERF_PIPE_HDR_VER0 16
3831 static const size_t attr_pipe_abi_sizes[] = {
3832 [0] = PERF_PIPE_HDR_VER0,
3837 * In the legacy pipe format, there is an implicit assumption that endianness
3838 * between host recording the samples, and host parsing the samples is the
3839 * same. This is not always the case given that the pipe output may always be
3840 * redirected into a file and analyzed on a different machine with possibly a
3841 * different endianness and perf_event ABI revisions in the perf tool itself.
3843 static int try_all_pipe_abis(uint64_t hdr_sz, struct perf_header *ph)
3848 for (i = 0 ; attr_pipe_abi_sizes[i]; i++) {
3849 if (hdr_sz != attr_pipe_abi_sizes[i]) {
3850 attr_size = bswap_64(hdr_sz);
3851 if (attr_size != hdr_sz)
3854 ph->needs_swap = true;
3856 pr_debug("Pipe ABI%d perf.data file detected\n", i);
3862 bool is_perf_magic(u64 magic)
3864 if (!memcmp(&magic, __perf_magic1, sizeof(magic))
3865 || magic == __perf_magic2
3866 || magic == __perf_magic2_sw)
3872 static int check_magic_endian(u64 magic, uint64_t hdr_sz,
3873 bool is_pipe, struct perf_header *ph)
3877 /* check for legacy format */
3878 ret = memcmp(&magic, __perf_magic1, sizeof(magic));
3880 ph->version = PERF_HEADER_VERSION_1;
3881 pr_debug("legacy perf.data format\n");
3883 return try_all_pipe_abis(hdr_sz, ph);
3885 return try_all_file_abis(hdr_sz, ph);
3888 * the new magic number serves two purposes:
3889 * - unique number to identify actual perf.data files
3890 * - encode endianness of file
3892 ph->version = PERF_HEADER_VERSION_2;
3894 /* check magic number with one endianness */
3895 if (magic == __perf_magic2)
3898 /* check magic number with opposite endianness */
3899 if (magic != __perf_magic2_sw)
3902 ph->needs_swap = true;
3907 int perf_file_header__read(struct perf_file_header *header,
3908 struct perf_header *ph, int fd)
3912 lseek(fd, 0, SEEK_SET);
3914 ret = readn(fd, header, sizeof(*header));
3918 if (check_magic_endian(header->magic,
3919 header->attr_size, false, ph) < 0) {
3920 pr_debug("magic/endian check failed\n");
3924 if (ph->needs_swap) {
3925 mem_bswap_64(header, offsetof(struct perf_file_header,
3929 if (header->size != sizeof(*header)) {
3930 /* Support the previous format */
3931 if (header->size == offsetof(typeof(*header), adds_features))
3932 bitmap_zero(header->adds_features, HEADER_FEAT_BITS);
3935 } else if (ph->needs_swap) {
3937 * feature bitmap is declared as an array of unsigned longs --
3938 * not good since its size can differ between the host that
3939 * generated the data file and the host analyzing the file.
3941 * We need to handle endianness, but we don't know the size of
3942 * the unsigned long where the file was generated. Take a best
3943 * guess at determining it: try 64-bit swap first (ie., file
3944 * created on a 64-bit host), and check if the hostname feature
3945 * bit is set (this feature bit is forced on as of fbe96f2).
3946 * If the bit is not, undo the 64-bit swap and try a 32-bit
3947 * swap. If the hostname bit is still not set (e.g., older data
3948 * file), punt and fallback to the original behavior --
3949 * clearing all feature bits and setting buildid.
3951 mem_bswap_64(&header->adds_features,
3952 BITS_TO_U64(HEADER_FEAT_BITS));
3954 if (!test_bit(HEADER_HOSTNAME, header->adds_features)) {
3956 mem_bswap_64(&header->adds_features,
3957 BITS_TO_U64(HEADER_FEAT_BITS));
3960 mem_bswap_32(&header->adds_features,
3961 BITS_TO_U32(HEADER_FEAT_BITS));
3964 if (!test_bit(HEADER_HOSTNAME, header->adds_features)) {
3965 bitmap_zero(header->adds_features, HEADER_FEAT_BITS);
3966 __set_bit(HEADER_BUILD_ID, header->adds_features);
3970 memcpy(&ph->adds_features, &header->adds_features,
3971 sizeof(ph->adds_features));
3973 ph->data_offset = header->data.offset;
3974 ph->data_size = header->data.size;
3975 ph->feat_offset = header->data.offset + header->data.size;
3979 static int perf_file_section__process(struct perf_file_section *section,
3980 struct perf_header *ph,
3981 int feat, int fd, void *data)
3983 struct feat_fd fdd = {
3986 .size = section->size,
3987 .offset = section->offset,
3990 if (lseek(fd, section->offset, SEEK_SET) == (off_t)-1) {
3991 pr_debug("Failed to lseek to %" PRIu64 " offset for feature "
3992 "%d, continuing...\n", section->offset, feat);
3996 if (feat >= HEADER_LAST_FEATURE) {
3997 pr_debug("unknown feature %d, continuing...\n", feat);
4001 if (!feat_ops[feat].process)
4004 return feat_ops[feat].process(&fdd, data);
4007 static int perf_file_header__read_pipe(struct perf_pipe_file_header *header,
4008 struct perf_header *ph,
4009 struct perf_data* data,
4010 bool repipe, int repipe_fd)
4012 struct feat_fd ff = {
4018 ret = perf_data__read(data, header, sizeof(*header));
4022 if (check_magic_endian(header->magic, header->size, true, ph) < 0) {
4023 pr_debug("endian/magic failed\n");
4028 header->size = bswap_64(header->size);
4030 if (repipe && do_write(&ff, header, sizeof(*header)) < 0)
4036 static int perf_header__read_pipe(struct perf_session *session, int repipe_fd)
4038 struct perf_header *header = &session->header;
4039 struct perf_pipe_file_header f_header;
4041 if (perf_file_header__read_pipe(&f_header, header, session->data,
4042 session->repipe, repipe_fd) < 0) {
4043 pr_debug("incompatible file format\n");
4047 return f_header.size == sizeof(f_header) ? 0 : -1;
4050 static int read_attr(int fd, struct perf_header *ph,
4051 struct perf_file_attr *f_attr)
4053 struct perf_event_attr *attr = &f_attr->attr;
4055 size_t our_sz = sizeof(f_attr->attr);
4058 memset(f_attr, 0, sizeof(*f_attr));
4060 /* read minimal guaranteed structure */
4061 ret = readn(fd, attr, PERF_ATTR_SIZE_VER0);
4063 pr_debug("cannot read %d bytes of header attr\n",
4064 PERF_ATTR_SIZE_VER0);
4068 /* on file perf_event_attr size */
4076 sz = PERF_ATTR_SIZE_VER0;
4077 } else if (sz > our_sz) {
4078 pr_debug("file uses a more recent and unsupported ABI"
4079 " (%zu bytes extra)\n", sz - our_sz);
4082 /* what we have not yet read and that we know about */
4083 left = sz - PERF_ATTR_SIZE_VER0;
4086 ptr += PERF_ATTR_SIZE_VER0;
4088 ret = readn(fd, ptr, left);
4090 /* read perf_file_section, ids are read in caller */
4091 ret = readn(fd, &f_attr->ids, sizeof(f_attr->ids));
4093 return ret <= 0 ? -1 : 0;
4096 #ifdef HAVE_LIBTRACEEVENT
4097 static int evsel__prepare_tracepoint_event(struct evsel *evsel, struct tep_handle *pevent)
4099 struct tep_event *event;
4102 /* already prepared */
4103 if (evsel->tp_format)
4106 if (pevent == NULL) {
4107 pr_debug("broken or missing trace data\n");
4111 event = tep_find_event(pevent, evsel->core.attr.config);
4112 if (event == NULL) {
4113 pr_debug("cannot find event format for %d\n", (int)evsel->core.attr.config);
4118 snprintf(bf, sizeof(bf), "%s:%s", event->system, event->name);
4119 evsel->name = strdup(bf);
4120 if (evsel->name == NULL)
4124 evsel->tp_format = event;
4128 static int evlist__prepare_tracepoint_events(struct evlist *evlist, struct tep_handle *pevent)
4132 evlist__for_each_entry(evlist, pos) {
4133 if (pos->core.attr.type == PERF_TYPE_TRACEPOINT &&
4134 evsel__prepare_tracepoint_event(pos, pevent))
4142 int perf_session__read_header(struct perf_session *session, int repipe_fd)
4144 struct perf_data *data = session->data;
4145 struct perf_header *header = &session->header;
4146 struct perf_file_header f_header;
4147 struct perf_file_attr f_attr;
4149 int nr_attrs, nr_ids, i, j, err;
4150 int fd = perf_data__fd(data);
4152 session->evlist = evlist__new();
4153 if (session->evlist == NULL)
4156 session->evlist->env = &header->env;
4157 session->machines.host.env = &header->env;
4160 * We can read 'pipe' data event from regular file,
4161 * check for the pipe header regardless of source.
4163 err = perf_header__read_pipe(session, repipe_fd);
4164 if (!err || perf_data__is_pipe(data)) {
4165 data->is_pipe = true;
4169 if (perf_file_header__read(&f_header, header, fd) < 0)
4172 if (header->needs_swap && data->in_place_update) {
4173 pr_err("In-place update not supported when byte-swapping is required\n");
4178 * Sanity check that perf.data was written cleanly; data size is
4179 * initialized to 0 and updated only if the on_exit function is run.
4180 * If data size is still 0 then the file contains only partial
4181 * information. Just warn user and process it as much as it can.
4183 if (f_header.data.size == 0) {
4184 pr_warning("WARNING: The %s file's data size field is 0 which is unexpected.\n"
4185 "Was the 'perf record' command properly terminated?\n",
4189 if (f_header.attr_size == 0) {
4190 pr_err("ERROR: The %s file's attr size field is 0 which is unexpected.\n"
4191 "Was the 'perf record' command properly terminated?\n",
4196 nr_attrs = f_header.attrs.size / f_header.attr_size;
4197 lseek(fd, f_header.attrs.offset, SEEK_SET);
4199 for (i = 0; i < nr_attrs; i++) {
4200 struct evsel *evsel;
4203 if (read_attr(fd, header, &f_attr) < 0)
4206 if (header->needs_swap) {
4207 f_attr.ids.size = bswap_64(f_attr.ids.size);
4208 f_attr.ids.offset = bswap_64(f_attr.ids.offset);
4209 perf_event__attr_swap(&f_attr.attr);
4212 tmp = lseek(fd, 0, SEEK_CUR);
4213 evsel = evsel__new(&f_attr.attr);
4216 goto out_delete_evlist;
4218 evsel->needs_swap = header->needs_swap;
4220 * Do it before so that if perf_evsel__alloc_id fails, this
4221 * entry gets purged too at evlist__delete().
4223 evlist__add(session->evlist, evsel);
4225 nr_ids = f_attr.ids.size / sizeof(u64);
4227 * We don't have the cpu and thread maps on the header, so
4228 * for allocating the perf_sample_id table we fake 1 cpu and
4229 * hattr->ids threads.
4231 if (perf_evsel__alloc_id(&evsel->core, 1, nr_ids))
4232 goto out_delete_evlist;
4234 lseek(fd, f_attr.ids.offset, SEEK_SET);
4236 for (j = 0; j < nr_ids; j++) {
4237 if (perf_header__getbuffer64(header, fd, &f_id, sizeof(f_id)))
4240 perf_evlist__id_add(&session->evlist->core, &evsel->core, 0, j, f_id);
4243 lseek(fd, tmp, SEEK_SET);
4246 #ifdef HAVE_LIBTRACEEVENT
4247 perf_header__process_sections(header, fd, &session->tevent,
4248 perf_file_section__process);
4250 if (evlist__prepare_tracepoint_events(session->evlist, session->tevent.pevent))
4251 goto out_delete_evlist;
4253 perf_header__process_sections(header, fd, NULL, perf_file_section__process);
4261 evlist__delete(session->evlist);
4262 session->evlist = NULL;
4266 int perf_event__process_feature(struct perf_session *session,
4267 union perf_event *event)
4269 struct perf_tool *tool = session->tool;
4270 struct feat_fd ff = { .fd = 0 };
4271 struct perf_record_header_feature *fe = (struct perf_record_header_feature *)event;
4272 int type = fe->header.type;
4273 u64 feat = fe->feat_id;
4276 if (type < 0 || type >= PERF_RECORD_HEADER_MAX) {
4277 pr_warning("invalid record type %d in pipe-mode\n", type);
4280 if (feat == HEADER_RESERVED || feat >= HEADER_LAST_FEATURE) {
4281 pr_warning("invalid record type %d in pipe-mode\n", type);
4285 if (!feat_ops[feat].process)
4288 ff.buf = (void *)fe->data;
4289 ff.size = event->header.size - sizeof(*fe);
4290 ff.ph = &session->header;
4292 if (feat_ops[feat].process(&ff, NULL)) {
4297 if (!feat_ops[feat].print || !tool->show_feat_hdr)
4300 if (!feat_ops[feat].full_only ||
4301 tool->show_feat_hdr >= SHOW_FEAT_HEADER_FULL_INFO) {
4302 feat_ops[feat].print(&ff, stdout);
4304 fprintf(stdout, "# %s info available, use -I to display\n",
4305 feat_ops[feat].name);
4308 free_event_desc(ff.events);
4312 size_t perf_event__fprintf_event_update(union perf_event *event, FILE *fp)
4314 struct perf_record_event_update *ev = &event->event_update;
4315 struct perf_cpu_map *map;
4318 ret = fprintf(fp, "\n... id: %" PRI_lu64 "\n", ev->id);
4321 case PERF_EVENT_UPDATE__SCALE:
4322 ret += fprintf(fp, "... scale: %f\n", ev->scale.scale);
4324 case PERF_EVENT_UPDATE__UNIT:
4325 ret += fprintf(fp, "... unit: %s\n", ev->unit);
4327 case PERF_EVENT_UPDATE__NAME:
4328 ret += fprintf(fp, "... name: %s\n", ev->name);
4330 case PERF_EVENT_UPDATE__CPUS:
4331 ret += fprintf(fp, "... ");
4333 map = cpu_map__new_data(&ev->cpus.cpus);
4335 ret += cpu_map__fprintf(map, fp);
4337 ret += fprintf(fp, "failed to get cpus\n");
4340 ret += fprintf(fp, "... unknown type\n");
4347 int perf_event__process_attr(struct perf_tool *tool __maybe_unused,
4348 union perf_event *event,
4349 struct evlist **pevlist)
4352 struct evsel *evsel;
4353 struct evlist *evlist = *pevlist;
4355 if (evlist == NULL) {
4356 *pevlist = evlist = evlist__new();
4361 evsel = evsel__new(&event->attr.attr);
4365 evlist__add(evlist, evsel);
4367 ids = event->header.size;
4368 ids -= (void *)&event->attr.id - (void *)event;
4369 n_ids = ids / sizeof(u64);
4371 * We don't have the cpu and thread maps on the header, so
4372 * for allocating the perf_sample_id table we fake 1 cpu and
4373 * hattr->ids threads.
4375 if (perf_evsel__alloc_id(&evsel->core, 1, n_ids))
4378 for (i = 0; i < n_ids; i++) {
4379 perf_evlist__id_add(&evlist->core, &evsel->core, 0, i, event->attr.id[i]);
4385 int perf_event__process_event_update(struct perf_tool *tool __maybe_unused,
4386 union perf_event *event,
4387 struct evlist **pevlist)
4389 struct perf_record_event_update *ev = &event->event_update;
4390 struct evlist *evlist;
4391 struct evsel *evsel;
4392 struct perf_cpu_map *map;
4395 perf_event__fprintf_event_update(event, stdout);
4397 if (!pevlist || *pevlist == NULL)
4402 evsel = evlist__id2evsel(evlist, ev->id);
4407 case PERF_EVENT_UPDATE__UNIT:
4408 free((char *)evsel->unit);
4409 evsel->unit = strdup(ev->unit);
4411 case PERF_EVENT_UPDATE__NAME:
4413 evsel->name = strdup(ev->name);
4415 case PERF_EVENT_UPDATE__SCALE:
4416 evsel->scale = ev->scale.scale;
4418 case PERF_EVENT_UPDATE__CPUS:
4419 map = cpu_map__new_data(&ev->cpus.cpus);
4421 perf_cpu_map__put(evsel->core.own_cpus);
4422 evsel->core.own_cpus = map;
4424 pr_err("failed to get event_update cpus\n");
4432 #ifdef HAVE_LIBTRACEEVENT
4433 int perf_event__process_tracing_data(struct perf_session *session,
4434 union perf_event *event)
4436 ssize_t size_read, padding, size = event->tracing_data.size;
4437 int fd = perf_data__fd(session->data);
4441 * The pipe fd is already in proper place and in any case
4442 * we can't move it, and we'd screw the case where we read
4443 * 'pipe' data from regular file. The trace_report reads
4444 * data from 'fd' so we need to set it directly behind the
4445 * event, where the tracing data starts.
4447 if (!perf_data__is_pipe(session->data)) {
4448 off_t offset = lseek(fd, 0, SEEK_CUR);
4450 /* setup for reading amidst mmap */
4451 lseek(fd, offset + sizeof(struct perf_record_header_tracing_data),
4455 size_read = trace_report(fd, &session->tevent,
4457 padding = PERF_ALIGN(size_read, sizeof(u64)) - size_read;
4459 if (readn(fd, buf, padding) < 0) {
4460 pr_err("%s: reading input file", __func__);
4463 if (session->repipe) {
4464 int retw = write(STDOUT_FILENO, buf, padding);
4465 if (retw <= 0 || retw != padding) {
4466 pr_err("%s: repiping tracing data padding", __func__);
4471 if (size_read + padding != size) {
4472 pr_err("%s: tracing data size mismatch", __func__);
4476 evlist__prepare_tracepoint_events(session->evlist, session->tevent.pevent);
4478 return size_read + padding;
4482 int perf_event__process_build_id(struct perf_session *session,
4483 union perf_event *event)
4485 __event_process_build_id(&event->build_id,
4486 event->build_id.filename,