// SPDX-License-Identifier: GPL-2.0
#include <inttypes.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include "builtin.h"
#include <subcmd/parse-options.h>
#include "util/auxtrace.h"
#include "util/trace-event.h"
#include "util/tool.h"
#include "util/session.h"
#include "util/data.h"
#include "util/map_symbol.h"
#include "util/mem-events.h"
#include "util/debug.h"
#include "util/dso.h"
#include "util/map.h"
#include "util/symbol.h"
#include "util/pmus.h"
#include "util/sample.h"
#include "util/string2.h"
#include "util/util.h"
#include <linux/err.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;
bool data_page_size;
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;
struct perf_pmu *pmu;
pmu = perf_mem_events_find_pmu();
if (!pmu) {
pr_err("failed: there is no PMU that supports perf mem\n");
exit(-1);
}
if (!strcmp(str, "list")) {
perf_pmu__mem_events_list(pmu);
exit(0);
}
if (perf_pmu__mem_events_parse(pmu, str))
exit(-1);
mem->operation = 0;
return 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;
int start, end;
const char **rec_argv;
int ret;
bool all_user = false, all_kernel = false;
struct perf_mem_event *e;
struct perf_pmu *pmu;
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()
};
pmu = perf_mem_events_find_pmu();
if (!pmu) {
pr_err("failed: no PMU supports the memory events\n");
return -1;
}
if (perf_pmu__mem_events_init(pmu)) {
pr_err("failed: memory events not supported\n");
return -1;
}
argc = parse_options(argc, argv, options, record_mem_usage,
PARSE_OPT_KEEP_UNKNOWN);
/* Max number of arguments multiplied by number of PMUs that can support them. */
rec_argc = argc + 9 * (perf_pmu__mem_events_num_mem_pmus(pmu) + 1);
if (mem->cpu_list)
rec_argc += 2;
rec_argv = calloc(rec_argc + 1, sizeof(char *));
if (!rec_argv)
return -1;
rec_argv[i++] = "record";
e = perf_pmu__mem_events_ptr(pmu, PERF_MEM_EVENTS__LOAD_STORE);
/*
* The load and store operations are required, use the event
* PERF_MEM_EVENTS__LOAD_STORE if it is supported.
*/
if (e->tag &&
(mem->operation & MEM_OPERATION_LOAD) &&
(mem->operation & MEM_OPERATION_STORE)) {
e->record = true;
rec_argv[i++] = "-W";
} else {
if (mem->operation & MEM_OPERATION_LOAD) {
e = perf_pmu__mem_events_ptr(pmu, PERF_MEM_EVENTS__LOAD);
e->record = true;
}
if (mem->operation & MEM_OPERATION_STORE) {
e = perf_pmu__mem_events_ptr(pmu, PERF_MEM_EVENTS__STORE);
e->record = true;
}
}
e = perf_pmu__mem_events_ptr(pmu, PERF_MEM_EVENTS__LOAD);
if (e->record)
rec_argv[i++] = "-W";
rec_argv[i++] = "-d";
if (mem->phys_addr)
rec_argv[i++] = "--phys-data";
if (mem->data_page_size)
rec_argv[i++] = "--data-page-size";
start = i;
ret = perf_mem_events__record_args(rec_argv, &i);
if (ret)
goto out;
end = i;
if (all_user)
rec_argv[i++] = "--all-user";
if (all_kernel)
rec_argv[i++] = "--all-kernel";
if (mem->cpu_list) {
rec_argv[i++] = "-C";
rec_argv[i++] = mem->cpu_list;
}
for (j = 0; j < argc; j++, i++)
rec_argv[i] = argv[j];
if (verbose > 0) {
pr_debug("calling: record ");
for (j = start; j < end; j++)
pr_debug("%s ", rec_argv[j]);
pr_debug("\n");
}
ret = cmd_record(i, rec_argv);
out:
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, *field_sep;
char str[PAGE_SIZE_NAME_LEN];
struct dso *dso = NULL;
addr_location__init(&al);
if (machine__resolve(machine, &al, sample) < 0) {
fprintf(stderr, "problem processing %d event, skipping it.\n",
event->header.type);
addr_location__exit(&al);
return -1;
}
if (al.filtered || (mem->hide_unresolved && al.sym == NULL))
goto out_put;
if (al.map != NULL) {
dso = map__dso(al.map);
if (dso)
dso__set_hit(dso);
}
field_sep = symbol_conf.field_sep;
if (field_sep) {
fmt = "%d%s%d%s0x%"PRIx64"%s0x%"PRIx64"%s";
} else {
fmt = "%5d%s%5d%s0x%016"PRIx64"%s0x016%"PRIx64"%s";
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);
if (mem->phys_addr) {
printf("0x%016"PRIx64"%s",
sample->phys_addr,
symbol_conf.field_sep);
}
if (mem->data_page_size) {
printf("%s%s",
get_page_size_name(sample->data_page_size, str),
symbol_conf.field_sep);
}
if (field_sep)
fmt = "%"PRIu64"%s0x%"PRIx64"%s%s:%s\n";
else
fmt = "%5"PRIu64"%s0x%06"PRIx64"%s%s:%s\n";
printf(fmt,
sample->weight,
symbol_conf.field_sep,
sample->data_src,
symbol_conf.field_sep,
dso ? dso__long_name(dso) : "???",
al.sym ? al.sym->name : "???");
out_put:
addr_location__exit(&al);
return 0;
}
static int process_sample_event(struct perf_tool *tool,
union perf_event *event,
struct perf_sample *sample,
struct 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 itrace_synth_opts itrace_synth_opts = {
.set = true,
.mem = true, /* Only enable memory event */
.default_no_sample = true,
};
struct perf_data data = {
.path = input_name,
.mode = PERF_DATA_MODE_READ,
.force = mem->force,
};
int ret;
struct perf_session *session = perf_session__new(&data, &mem->tool);
if (IS_ERR(session))
return PTR_ERR(session);
session->itrace_synth_opts = &itrace_synth_opts;
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, ");
if (mem->phys_addr)
printf("PHYS ADDR, ");
if (mem->data_page_size)
printf("DATA PAGE SIZE, ");
printf("LOCAL WEIGHT, DSRC, SYMBOL\n");
ret = perf_session__process_events(session);
out_delete:
perf_session__delete(session);
return ret;
}
static char *get_sort_order(struct perf_mem *mem)
{
bool has_extra_options = (mem->phys_addr | mem->data_page_size) ? true : false;
char sort[128];
/*
* there is no weight (cost) associated with stores, so don't print
* the column
*/
if (!(mem->operation & MEM_OPERATION_LOAD)) {
strcpy(sort, "--sort=mem,sym,dso,symbol_daddr,"
"dso_daddr,tlb,locked");
} else if (has_extra_options) {
strcpy(sort, "--sort=local_weight,mem,sym,dso,symbol_daddr,"
"dso_daddr,snoop,tlb,locked,blocked");
} else
return NULL;
if (mem->phys_addr)
strcat(sort, ",phys_daddr");
if (mem->data_page_size)
strcat(sort, ",data_page_size");
return strdup(sort);
}
static int report_events(int argc, const char **argv, struct perf_mem *mem)
{
const char **rep_argv;
int ret, i = 0, j, rep_argc;
char *new_sort_order;
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 */
new_sort_order = get_sort_order(mem);
if (new_sort_order)
rep_argv[i++] = new_sort_order;
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,
.attr = perf_event__process_attr,
.build_id = perf_event__process_build_id,
.namespaces = perf_event__process_namespaces,
.auxtrace_info = perf_event__process_auxtrace_info,
.auxtrace = perf_event__process_auxtrace,
.auxtrace_error = perf_event__process_auxtrace_error,
.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_BOOLEAN(0, "data-page-size", &mem.data_page_size, "Record/Report sample data address page size"),
OPT_END()
};
const char *const mem_subcommands[] = { "record", "report", NULL };
const char *mem_usage[] = {
NULL,
NULL
};
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 (strlen(argv[0]) > 2 && strstarts("record", argv[0]))
return __cmd_record(argc, argv, &mem);
else if (strlen(argv[0]) > 2 && strstarts("report", argv[0]))
return report_events(argc, argv, &mem);
else
usage_with_options(mem_usage, mem_options);
return 0;
}
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