460 lines
11 KiB
C
460 lines
11 KiB
C
// SPDX-License-Identifier: GPL-2.0
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#include <inttypes.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <unistd.h>
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#include "builtin.h"
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#include "perf.h"
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#include <subcmd/parse-options.h>
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#include "util/trace-event.h"
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#include "util/tool.h"
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#include "util/session.h"
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#include "util/data.h"
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#include "util/mem-events.h"
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#include "util/debug.h"
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#include "util/symbol.h"
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#define MEM_OPERATION_LOAD 0x1
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#define MEM_OPERATION_STORE 0x2
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struct perf_mem {
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struct perf_tool tool;
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char const *input_name;
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bool hide_unresolved;
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bool dump_raw;
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bool force;
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bool phys_addr;
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int operation;
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const char *cpu_list;
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DECLARE_BITMAP(cpu_bitmap, MAX_NR_CPUS);
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};
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static int parse_record_events(const struct option *opt,
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const char *str, int unset __maybe_unused)
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{
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struct perf_mem *mem = *(struct perf_mem **)opt->value;
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int j;
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if (strcmp(str, "list")) {
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if (!perf_mem_events__parse(str)) {
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mem->operation = 0;
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return 0;
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}
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exit(-1);
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}
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for (j = 0; j < PERF_MEM_EVENTS__MAX; j++) {
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struct perf_mem_event *e = &perf_mem_events[j];
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fprintf(stderr, "%-13s%-*s%s\n",
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e->tag,
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verbose > 0 ? 25 : 0,
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verbose > 0 ? perf_mem_events__name(j) : "",
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e->supported ? ": available" : "");
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}
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exit(0);
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}
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static const char * const __usage[] = {
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"perf mem record [<options>] [<command>]",
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"perf mem record [<options>] -- <command> [<options>]",
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NULL
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};
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static const char * const *record_mem_usage = __usage;
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static int __cmd_record(int argc, const char **argv, struct perf_mem *mem)
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{
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int rec_argc, i = 0, j;
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const char **rec_argv;
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int ret;
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bool all_user = false, all_kernel = false;
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struct option options[] = {
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OPT_CALLBACK('e', "event", &mem, "event",
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"event selector. use 'perf mem record -e list' to list available events",
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parse_record_events),
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OPT_UINTEGER(0, "ldlat", &perf_mem_events__loads_ldlat, "mem-loads latency"),
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OPT_INCR('v', "verbose", &verbose,
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"be more verbose (show counter open errors, etc)"),
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OPT_BOOLEAN('U', "all-user", &all_user, "collect only user level data"),
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OPT_BOOLEAN('K', "all-kernel", &all_kernel, "collect only kernel level data"),
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OPT_END()
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};
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argc = parse_options(argc, argv, options, record_mem_usage,
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PARSE_OPT_STOP_AT_NON_OPTION);
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rec_argc = argc + 9; /* max number of arguments */
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rec_argv = calloc(rec_argc + 1, sizeof(char *));
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if (!rec_argv)
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return -1;
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rec_argv[i++] = "record";
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if (mem->operation & MEM_OPERATION_LOAD)
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perf_mem_events[PERF_MEM_EVENTS__LOAD].record = true;
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if (mem->operation & MEM_OPERATION_STORE)
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perf_mem_events[PERF_MEM_EVENTS__STORE].record = true;
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if (perf_mem_events[PERF_MEM_EVENTS__LOAD].record)
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rec_argv[i++] = "-W";
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rec_argv[i++] = "-d";
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if (mem->phys_addr)
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rec_argv[i++] = "--phys-data";
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for (j = 0; j < PERF_MEM_EVENTS__MAX; j++) {
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if (!perf_mem_events[j].record)
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continue;
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if (!perf_mem_events[j].supported) {
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pr_err("failed: event '%s' not supported\n",
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perf_mem_events__name(j));
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free(rec_argv);
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return -1;
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}
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rec_argv[i++] = "-e";
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rec_argv[i++] = perf_mem_events__name(j);
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};
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if (all_user)
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rec_argv[i++] = "--all-user";
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if (all_kernel)
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rec_argv[i++] = "--all-kernel";
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for (j = 0; j < argc; j++, i++)
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rec_argv[i] = argv[j];
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if (verbose > 0) {
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pr_debug("calling: record ");
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while (rec_argv[j]) {
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pr_debug("%s ", rec_argv[j]);
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j++;
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}
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pr_debug("\n");
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}
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ret = cmd_record(i, rec_argv);
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free(rec_argv);
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return ret;
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}
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static int
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dump_raw_samples(struct perf_tool *tool,
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union perf_event *event,
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struct perf_sample *sample,
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struct machine *machine)
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{
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struct perf_mem *mem = container_of(tool, struct perf_mem, tool);
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struct addr_location al;
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const char *fmt;
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if (machine__resolve(machine, &al, sample) < 0) {
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fprintf(stderr, "problem processing %d event, skipping it.\n",
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event->header.type);
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return -1;
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}
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if (al.filtered || (mem->hide_unresolved && al.sym == NULL))
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goto out_put;
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if (al.map != NULL)
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al.map->dso->hit = 1;
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if (mem->phys_addr) {
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if (symbol_conf.field_sep) {
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fmt = "%d%s%d%s0x%"PRIx64"%s0x%"PRIx64"%s0x%016"PRIx64
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"%s%"PRIu64"%s0x%"PRIx64"%s%s:%s\n";
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} else {
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fmt = "%5d%s%5d%s0x%016"PRIx64"%s0x016%"PRIx64
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"%s0x%016"PRIx64"%s%5"PRIu64"%s0x%06"PRIx64
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"%s%s:%s\n";
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symbol_conf.field_sep = " ";
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}
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printf(fmt,
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sample->pid,
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symbol_conf.field_sep,
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sample->tid,
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symbol_conf.field_sep,
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sample->ip,
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symbol_conf.field_sep,
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sample->addr,
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symbol_conf.field_sep,
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sample->phys_addr,
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symbol_conf.field_sep,
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sample->weight,
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symbol_conf.field_sep,
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sample->data_src,
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symbol_conf.field_sep,
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al.map ? (al.map->dso ? al.map->dso->long_name : "???") : "???",
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al.sym ? al.sym->name : "???");
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} else {
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if (symbol_conf.field_sep) {
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fmt = "%d%s%d%s0x%"PRIx64"%s0x%"PRIx64"%s%"PRIu64
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"%s0x%"PRIx64"%s%s:%s\n";
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} else {
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fmt = "%5d%s%5d%s0x%016"PRIx64"%s0x016%"PRIx64
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"%s%5"PRIu64"%s0x%06"PRIx64"%s%s:%s\n";
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symbol_conf.field_sep = " ";
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}
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printf(fmt,
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sample->pid,
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symbol_conf.field_sep,
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sample->tid,
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symbol_conf.field_sep,
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sample->ip,
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symbol_conf.field_sep,
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sample->addr,
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symbol_conf.field_sep,
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sample->weight,
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symbol_conf.field_sep,
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sample->data_src,
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symbol_conf.field_sep,
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al.map ? (al.map->dso ? al.map->dso->long_name : "???") : "???",
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al.sym ? al.sym->name : "???");
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}
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out_put:
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addr_location__put(&al);
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return 0;
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}
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static int process_sample_event(struct perf_tool *tool,
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union perf_event *event,
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struct perf_sample *sample,
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struct perf_evsel *evsel __maybe_unused,
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struct machine *machine)
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{
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return dump_raw_samples(tool, event, sample, machine);
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}
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static int report_raw_events(struct perf_mem *mem)
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{
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struct perf_data data = {
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.file = {
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.path = input_name,
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},
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.mode = PERF_DATA_MODE_READ,
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.force = mem->force,
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};
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int ret;
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struct perf_session *session = perf_session__new(&data, false,
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&mem->tool);
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if (session == NULL)
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return -1;
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if (mem->cpu_list) {
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ret = perf_session__cpu_bitmap(session, mem->cpu_list,
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mem->cpu_bitmap);
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if (ret < 0)
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goto out_delete;
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}
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ret = symbol__init(&session->header.env);
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if (ret < 0)
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goto out_delete;
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if (mem->phys_addr)
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printf("# PID, TID, IP, ADDR, PHYS ADDR, LOCAL WEIGHT, DSRC, SYMBOL\n");
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else
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printf("# PID, TID, IP, ADDR, LOCAL WEIGHT, DSRC, SYMBOL\n");
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ret = perf_session__process_events(session);
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out_delete:
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perf_session__delete(session);
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return ret;
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}
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static int report_events(int argc, const char **argv, struct perf_mem *mem)
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{
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const char **rep_argv;
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int ret, i = 0, j, rep_argc;
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if (mem->dump_raw)
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return report_raw_events(mem);
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rep_argc = argc + 3;
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rep_argv = calloc(rep_argc + 1, sizeof(char *));
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if (!rep_argv)
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return -1;
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rep_argv[i++] = "report";
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rep_argv[i++] = "--mem-mode";
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rep_argv[i++] = "-n"; /* display number of samples */
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/*
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* there is no weight (cost) associated with stores, so don't print
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* the column
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*/
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if (!(mem->operation & MEM_OPERATION_LOAD)) {
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if (mem->phys_addr)
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rep_argv[i++] = "--sort=mem,sym,dso,symbol_daddr,"
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"dso_daddr,tlb,locked,phys_daddr";
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else
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rep_argv[i++] = "--sort=mem,sym,dso,symbol_daddr,"
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"dso_daddr,tlb,locked";
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} else if (mem->phys_addr)
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rep_argv[i++] = "--sort=local_weight,mem,sym,dso,symbol_daddr,"
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"dso_daddr,snoop,tlb,locked,phys_daddr";
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for (j = 1; j < argc; j++, i++)
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rep_argv[i] = argv[j];
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ret = cmd_report(i, rep_argv);
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free(rep_argv);
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return ret;
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}
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struct mem_mode {
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const char *name;
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int mode;
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};
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#define MEM_OPT(n, m) \
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{ .name = n, .mode = (m) }
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#define MEM_END { .name = NULL }
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static const struct mem_mode mem_modes[]={
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MEM_OPT("load", MEM_OPERATION_LOAD),
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MEM_OPT("store", MEM_OPERATION_STORE),
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MEM_END
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};
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static int
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parse_mem_ops(const struct option *opt, const char *str, int unset)
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{
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int *mode = (int *)opt->value;
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const struct mem_mode *m;
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char *s, *os = NULL, *p;
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int ret = -1;
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if (unset)
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return 0;
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/* str may be NULL in case no arg is passed to -t */
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if (str) {
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/* because str is read-only */
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s = os = strdup(str);
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if (!s)
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return -1;
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/* reset mode */
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*mode = 0;
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for (;;) {
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p = strchr(s, ',');
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if (p)
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*p = '\0';
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for (m = mem_modes; m->name; m++) {
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if (!strcasecmp(s, m->name))
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break;
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}
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if (!m->name) {
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fprintf(stderr, "unknown sampling op %s,"
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" check man page\n", s);
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goto error;
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}
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*mode |= m->mode;
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if (!p)
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break;
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s = p + 1;
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}
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}
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ret = 0;
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if (*mode == 0)
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*mode = MEM_OPERATION_LOAD;
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error:
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free(os);
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return ret;
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}
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int cmd_mem(int argc, const char **argv)
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{
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struct stat st;
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struct perf_mem mem = {
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.tool = {
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.sample = process_sample_event,
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.mmap = perf_event__process_mmap,
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.mmap2 = perf_event__process_mmap2,
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.comm = perf_event__process_comm,
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.lost = perf_event__process_lost,
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.fork = perf_event__process_fork,
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.build_id = perf_event__process_build_id,
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.namespaces = perf_event__process_namespaces,
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.ordered_events = true,
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},
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.input_name = "perf.data",
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/*
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* default to both load an store sampling
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*/
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.operation = MEM_OPERATION_LOAD | MEM_OPERATION_STORE,
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};
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const struct option mem_options[] = {
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OPT_CALLBACK('t', "type", &mem.operation,
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"type", "memory operations(load,store) Default load,store",
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parse_mem_ops),
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OPT_BOOLEAN('D', "dump-raw-samples", &mem.dump_raw,
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"dump raw samples in ASCII"),
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OPT_BOOLEAN('U', "hide-unresolved", &mem.hide_unresolved,
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"Only display entries resolved to a symbol"),
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OPT_STRING('i', "input", &input_name, "file",
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"input file name"),
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OPT_STRING('C', "cpu", &mem.cpu_list, "cpu",
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"list of cpus to profile"),
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OPT_STRING_NOEMPTY('x', "field-separator", &symbol_conf.field_sep,
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"separator",
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"separator for columns, no spaces will be added"
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" between columns '.' is reserved."),
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OPT_BOOLEAN('f', "force", &mem.force, "don't complain, do it"),
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OPT_BOOLEAN('p', "phys-data", &mem.phys_addr, "Record/Report sample physical addresses"),
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OPT_END()
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};
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const char *const mem_subcommands[] = { "record", "report", NULL };
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const char *mem_usage[] = {
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NULL,
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NULL
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};
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if (perf_mem_events__init()) {
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pr_err("failed: memory events not supported\n");
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return -1;
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}
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argc = parse_options_subcommand(argc, argv, mem_options, mem_subcommands,
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mem_usage, PARSE_OPT_STOP_AT_NON_OPTION);
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if (!argc || !(strncmp(argv[0], "rec", 3) || mem.operation))
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usage_with_options(mem_usage, mem_options);
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if (!mem.input_name || !strlen(mem.input_name)) {
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if (!fstat(STDIN_FILENO, &st) && S_ISFIFO(st.st_mode))
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mem.input_name = "-";
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else
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mem.input_name = "perf.data";
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}
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if (!strncmp(argv[0], "rec", 3))
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return __cmd_record(argc, argv, &mem);
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else if (!strncmp(argv[0], "rep", 3))
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return report_events(argc, argv, &mem);
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else
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usage_with_options(mem_usage, mem_options);
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return 0;
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}
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