#include "builtin.h" #include "perf.h" #include <subcmd/parse-options.h> #include "util/trace-event.h" #include "util/tool.h" #include "util/session.h" #include "util/data.h" #include "util/mem-events.h" #include "util/debug.h" #define MEM_OPERATION_LOAD 0x1 #define MEM_OPERATION_STORE 0x2 struct perf_mem { struct perf_tool tool; char const *input_name; bool hide_unresolved; bool dump_raw; bool force; int operation; const char *cpu_list; DECLARE_BITMAP(cpu_bitmap, MAX_NR_CPUS); }; static int parse_record_events(const struct option *opt, const char *str, int unset __maybe_unused) { struct perf_mem *mem = *(struct perf_mem **)opt->value; int j; if (strcmp(str, "list")) { if (!perf_mem_events__parse(str)) { mem->operation = 0; return 0; } exit(-1); } for (j = 0; j < PERF_MEM_EVENTS__MAX; j++) { struct perf_mem_event *e = &perf_mem_events[j]; fprintf(stderr, "%-13s%-*s%s\n", e->tag, verbose ? 25 : 0, verbose ? perf_mem_events__name(j) : "", e->supported ? ": available" : ""); } exit(0); } static const char * const __usage[] = { "perf mem record [<options>] [<command>]", "perf mem record [<options>] -- <command> [<options>]", NULL }; static const char * const *record_mem_usage = __usage; static int __cmd_record(int argc, const char **argv, struct perf_mem *mem) { int rec_argc, i = 0, j; const char **rec_argv; int ret; bool all_user = false, all_kernel = false; struct option options[] = { OPT_CALLBACK('e', "event", &mem, "event", "event selector. use 'perf mem record -e list' to list available events", parse_record_events), OPT_UINTEGER(0, "ldlat", &perf_mem_events__loads_ldlat, "mem-loads latency"), OPT_INCR('v', "verbose", &verbose, "be more verbose (show counter open errors, etc)"), OPT_BOOLEAN('U', "all-user", &all_user, "collect only user level data"), OPT_BOOLEAN('K', "all-kernel", &all_kernel, "collect only kernel level data"), OPT_END() }; argc = parse_options(argc, argv, options, record_mem_usage, PARSE_OPT_STOP_AT_NON_OPTION); rec_argc = argc + 9; /* max number of arguments */ rec_argv = calloc(rec_argc + 1, sizeof(char *)); if (!rec_argv) return -1; rec_argv[i++] = "record"; if (mem->operation & MEM_OPERATION_LOAD) perf_mem_events[PERF_MEM_EVENTS__LOAD].record = true; if (mem->operation & MEM_OPERATION_STORE) perf_mem_events[PERF_MEM_EVENTS__STORE].record = true; if (perf_mem_events[PERF_MEM_EVENTS__LOAD].record) rec_argv[i++] = "-W"; rec_argv[i++] = "-d"; for (j = 0; j < PERF_MEM_EVENTS__MAX; j++) { if (!perf_mem_events[j].record) continue; if (!perf_mem_events[j].supported) { pr_err("failed: event '%s' not supported\n", perf_mem_events__name(j)); return -1; } rec_argv[i++] = "-e"; rec_argv[i++] = perf_mem_events__name(j); }; if (all_user) rec_argv[i++] = "--all-user"; if (all_kernel) rec_argv[i++] = "--all-kernel"; for (j = 0; j < argc; j++, i++) rec_argv[i] = argv[j]; if (verbose > 0) { pr_debug("calling: record "); while (rec_argv[j]) { pr_debug("%s ", rec_argv[j]); j++; } pr_debug("\n"); } ret = cmd_record(i, rec_argv, NULL); free(rec_argv); return ret; } static int dump_raw_samples(struct perf_tool *tool, union perf_event *event, struct perf_sample *sample, struct machine *machine) { struct perf_mem *mem = container_of(tool, struct perf_mem, tool); struct addr_location al; const char *fmt; if (machine__resolve(machine, &al, sample) < 0) { fprintf(stderr, "problem processing %d event, skipping it.\n", event->header.type); return -1; } if (al.filtered || (mem->hide_unresolved && al.sym == NULL)) goto out_put; if (al.map != NULL) al.map->dso->hit = 1; if (symbol_conf.field_sep) { fmt = "%d%s%d%s0x%"PRIx64"%s0x%"PRIx64"%s%"PRIu64 "%s0x%"PRIx64"%s%s:%s\n"; } else { fmt = "%5d%s%5d%s0x%016"PRIx64"%s0x016%"PRIx64 "%s%5"PRIu64"%s0x%06"PRIx64"%s%s:%s\n"; symbol_conf.field_sep = " "; } printf(fmt, sample->pid, symbol_conf.field_sep, sample->tid, symbol_conf.field_sep, sample->ip, symbol_conf.field_sep, sample->addr, symbol_conf.field_sep, sample->weight, symbol_conf.field_sep, sample->data_src, symbol_conf.field_sep, al.map ? (al.map->dso ? al.map->dso->long_name : "???") : "???", al.sym ? al.sym->name : "???"); out_put: addr_location__put(&al); return 0; } static int process_sample_event(struct perf_tool *tool, union perf_event *event, struct perf_sample *sample, struct perf_evsel *evsel __maybe_unused, struct machine *machine) { return dump_raw_samples(tool, event, sample, machine); } static int report_raw_events(struct perf_mem *mem) { struct perf_data_file file = { .path = input_name, .mode = PERF_DATA_MODE_READ, .force = mem->force, }; int ret; struct perf_session *session = perf_session__new(&file, false, &mem->tool); if (session == NULL) return -1; if (mem->cpu_list) { ret = perf_session__cpu_bitmap(session, mem->cpu_list, mem->cpu_bitmap); if (ret < 0) goto out_delete; } ret = symbol__init(&session->header.env); if (ret < 0) goto out_delete; printf("# PID, TID, IP, ADDR, LOCAL WEIGHT, DSRC, SYMBOL\n"); ret = perf_session__process_events(session); out_delete: perf_session__delete(session); return ret; } static int report_events(int argc, const char **argv, struct perf_mem *mem) { const char **rep_argv; int ret, i = 0, j, rep_argc; if (mem->dump_raw) return report_raw_events(mem); rep_argc = argc + 3; rep_argv = calloc(rep_argc + 1, sizeof(char *)); if (!rep_argv) return -1; rep_argv[i++] = "report"; rep_argv[i++] = "--mem-mode"; rep_argv[i++] = "-n"; /* display number of samples */ /* * there is no weight (cost) associated with stores, so don't print * the column */ if (!(mem->operation & MEM_OPERATION_LOAD)) rep_argv[i++] = "--sort=mem,sym,dso,symbol_daddr," "dso_daddr,tlb,locked"; for (j = 1; j < argc; j++, i++) rep_argv[i] = argv[j]; ret = cmd_report(i, rep_argv, NULL); free(rep_argv); return ret; } struct mem_mode { const char *name; int mode; }; #define MEM_OPT(n, m) \ { .name = n, .mode = (m) } #define MEM_END { .name = NULL } static const struct mem_mode mem_modes[]={ MEM_OPT("load", MEM_OPERATION_LOAD), MEM_OPT("store", MEM_OPERATION_STORE), MEM_END }; static int parse_mem_ops(const struct option *opt, const char *str, int unset) { int *mode = (int *)opt->value; const struct mem_mode *m; char *s, *os = NULL, *p; int ret = -1; if (unset) return 0; /* str may be NULL in case no arg is passed to -t */ if (str) { /* because str is read-only */ s = os = strdup(str); if (!s) return -1; /* reset mode */ *mode = 0; for (;;) { p = strchr(s, ','); if (p) *p = '\0'; for (m = mem_modes; m->name; m++) { if (!strcasecmp(s, m->name)) break; } if (!m->name) { fprintf(stderr, "unknown sampling op %s," " check man page\n", s); goto error; } *mode |= m->mode; if (!p) break; s = p + 1; } } ret = 0; if (*mode == 0) *mode = MEM_OPERATION_LOAD; error: free(os); return ret; } int cmd_mem(int argc, const char **argv, const char *prefix __maybe_unused) { struct stat st; struct perf_mem mem = { .tool = { .sample = process_sample_event, .mmap = perf_event__process_mmap, .mmap2 = perf_event__process_mmap2, .comm = perf_event__process_comm, .lost = perf_event__process_lost, .fork = perf_event__process_fork, .build_id = perf_event__process_build_id, .ordered_events = true, }, .input_name = "perf.data", /* * default to both load an store sampling */ .operation = MEM_OPERATION_LOAD | MEM_OPERATION_STORE, }; const struct option mem_options[] = { OPT_CALLBACK('t', "type", &mem.operation, "type", "memory operations(load,store) Default load,store", parse_mem_ops), OPT_BOOLEAN('D', "dump-raw-samples", &mem.dump_raw, "dump raw samples in ASCII"), OPT_BOOLEAN('U', "hide-unresolved", &mem.hide_unresolved, "Only display entries resolved to a symbol"), OPT_STRING('i', "input", &input_name, "file", "input file name"), OPT_STRING('C', "cpu", &mem.cpu_list, "cpu", "list of cpus to profile"), OPT_STRING_NOEMPTY('x', "field-separator", &symbol_conf.field_sep, "separator", "separator for columns, no spaces will be added" " between columns '.' is reserved."), OPT_BOOLEAN('f', "force", &mem.force, "don't complain, do it"), OPT_END() }; const char *const mem_subcommands[] = { "record", "report", NULL }; const char *mem_usage[] = { NULL, NULL }; if (perf_mem_events__init()) { pr_err("failed: memory events not supported\n"); return -1; } argc = parse_options_subcommand(argc, argv, mem_options, mem_subcommands, mem_usage, PARSE_OPT_STOP_AT_NON_OPTION); if (!argc || !(strncmp(argv[0], "rec", 3) || mem.operation)) usage_with_options(mem_usage, mem_options); if (!mem.input_name || !strlen(mem.input_name)) { if (!fstat(STDIN_FILENO, &st) && S_ISFIFO(st.st_mode)) mem.input_name = "-"; else mem.input_name = "perf.data"; } if (!strncmp(argv[0], "rec", 3)) return __cmd_record(argc, argv, &mem); else if (!strncmp(argv[0], "rep", 3)) return report_events(argc, argv, &mem); else usage_with_options(mem_usage, mem_options); return 0; }