diff options
Diffstat (limited to '')
-rw-r--r-- | tools/perf/builtin-mem.c | 459 |
1 files changed, 459 insertions, 0 deletions
diff --git a/tools/perf/builtin-mem.c b/tools/perf/builtin-mem.c new file mode 100644 index 000000000..57393e94d --- /dev/null +++ b/tools/perf/builtin-mem.c @@ -0,0 +1,459 @@ +// SPDX-License-Identifier: GPL-2.0 +#include <inttypes.h> +#include <sys/types.h> +#include <sys/stat.h> +#include <unistd.h> +#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" +#include "util/symbol.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; + bool phys_addr; + 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 > 0 ? 25 : 0, + verbose > 0 ? 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_KEEP_UNKNOWN); + + 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"; + + if (mem->phys_addr) + rec_argv[i++] = "--phys-data"; + + 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)); + free(rec_argv); + 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); + 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 (mem->phys_addr) { + if (symbol_conf.field_sep) { + fmt = "%d%s%d%s0x%"PRIx64"%s0x%"PRIx64"%s0x%016"PRIx64 + "%s%"PRIu64"%s0x%"PRIx64"%s%s:%s\n"; + } else { + fmt = "%5d%s%5d%s0x%016"PRIx64"%s0x016%"PRIx64 + "%s0x%016"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->phys_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 : "???"); + } else { + 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 data = { + .file = { + .path = input_name, + }, + .mode = PERF_DATA_MODE_READ, + .force = mem->force, + }; + int ret; + struct perf_session *session = perf_session__new(&data, 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; + + if (mem->phys_addr) + printf("# PID, TID, IP, ADDR, PHYS ADDR, LOCAL WEIGHT, DSRC, SYMBOL\n"); + else + 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)) { + if (mem->phys_addr) + rep_argv[i++] = "--sort=mem,sym,dso,symbol_daddr," + "dso_daddr,tlb,locked,phys_daddr"; + else + rep_argv[i++] = "--sort=mem,sym,dso,symbol_daddr," + "dso_daddr,tlb,locked"; + } else if (mem->phys_addr) + rep_argv[i++] = "--sort=local_weight,mem,sym,dso,symbol_daddr," + "dso_daddr,snoop,tlb,locked,phys_daddr"; + + for (j = 1; j < argc; j++, i++) + rep_argv[i] = argv[j]; + + ret = cmd_report(i, rep_argv); + 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) +{ + 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, + .namespaces = perf_event__process_namespaces, + .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_BOOLEAN('p', "phys-data", &mem.phys_addr, "Record/Report sample physical addresses"), + 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_KEEP_UNKNOWN); + + 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; +} |