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-rw-r--r--tools/perf/builtin-record.c81
1 files changed, 55 insertions, 26 deletions
diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
index 711745f56bba..ff77b805de71 100644
--- a/tools/perf/builtin-record.c
+++ b/tools/perf/builtin-record.c
@@ -49,7 +49,6 @@ static int group = 0;
static int realtime_prio = 0;
static bool raw_samples = false;
static bool system_wide = false;
-static int profile_cpu = -1;
static pid_t target_pid = -1;
static pid_t target_tid = -1;
static pid_t *all_tids = NULL;
@@ -61,6 +60,7 @@ static bool call_graph = false;
static bool inherit_stat = false;
static bool no_samples = false;
static bool sample_address = false;
+static bool no_buildid = false;
static long samples = 0;
static u64 bytes_written = 0;
@@ -74,6 +74,7 @@ static int file_new = 1;
static off_t post_processing_offset;
static struct perf_session *session;
+static const char *cpu_list;
struct mmap_data {
int counter;
@@ -268,12 +269,17 @@ static void create_counter(int counter, int cpu)
if (inherit_stat)
attr->inherit_stat = 1;
- if (sample_address)
+ if (sample_address) {
attr->sample_type |= PERF_SAMPLE_ADDR;
+ attr->mmap_data = track;
+ }
if (call_graph)
attr->sample_type |= PERF_SAMPLE_CALLCHAIN;
+ if (system_wide)
+ attr->sample_type |= PERF_SAMPLE_CPU;
+
if (raw_samples) {
attr->sample_type |= PERF_SAMPLE_TIME;
attr->sample_type |= PERF_SAMPLE_RAW;
@@ -300,7 +306,7 @@ try_again:
die("Permission error - are you root?\n"
"\t Consider tweaking"
" /proc/sys/kernel/perf_event_paranoid.\n");
- else if (err == ENODEV && profile_cpu != -1) {
+ else if (err == ENODEV && cpu_list) {
die("No such device - did you specify"
" an out-of-range profile CPU?\n");
}
@@ -433,14 +439,14 @@ static void atexit_header(void)
process_buildids();
perf_header__write(&session->header, output, true);
+ perf_session__delete(session);
+ symbol__exit();
}
}
static void event__synthesize_guest_os(struct machine *machine, void *data)
{
int err;
- char *guest_kallsyms;
- char path[PATH_MAX];
struct perf_session *psession = data;
if (machine__is_host(machine))
@@ -460,13 +466,6 @@ static void event__synthesize_guest_os(struct machine *machine, void *data)
pr_err("Couldn't record guest kernel [%d]'s reference"
" relocation symbol.\n", machine->pid);
- if (machine__is_default_guest(machine))
- guest_kallsyms = (char *) symbol_conf.default_guest_kallsyms;
- else {
- sprintf(path, "%s/proc/kallsyms", machine->root_dir);
- guest_kallsyms = path;
- }
-
/*
* We use _stext for guest kernel because guest kernel's /proc/kallsyms
* have no _text sometimes.
@@ -561,12 +560,15 @@ static int __cmd_record(int argc, const char **argv)
if (!file_new) {
err = perf_header__read(session, output);
if (err < 0)
- return err;
+ goto out_delete_session;
}
if (have_tracepoints(attrs, nr_counters))
perf_header__set_feat(&session->header, HEADER_TRACE_INFO);
+ /*
+ * perf_session__delete(session) will be called at atexit_header()
+ */
atexit(atexit_header);
if (forks) {
@@ -622,10 +624,15 @@ static int __cmd_record(int argc, const char **argv)
close(child_ready_pipe[0]);
}
- if ((!system_wide && no_inherit) || profile_cpu != -1) {
- open_counters(profile_cpu);
+ nr_cpus = read_cpu_map(cpu_list);
+ if (nr_cpus < 1) {
+ perror("failed to collect number of CPUs\n");
+ return -1;
+ }
+
+ if (!system_wide && no_inherit && !cpu_list) {
+ open_counters(-1);
} else {
- nr_cpus = read_cpu_map();
for (i = 0; i < nr_cpus; i++)
open_counters(cpumap[i]);
}
@@ -704,7 +711,7 @@ static int __cmd_record(int argc, const char **argv)
if (perf_guest)
perf_session__process_machines(session, event__synthesize_guest_os);
- if (!system_wide && profile_cpu == -1)
+ if (!system_wide)
event__synthesize_thread(target_tid, process_synthesized_event,
session);
else
@@ -766,6 +773,10 @@ static int __cmd_record(int argc, const char **argv)
bytes_written / 24);
return 0;
+
+out_delete_session:
+ perf_session__delete(session);
+ return err;
}
static const char * const record_usage[] = {
@@ -794,8 +805,8 @@ static const struct option options[] = {
"system-wide collection from all CPUs"),
OPT_BOOLEAN('A', "append", &append_file,
"append to the output file to do incremental profiling"),
- OPT_INTEGER('C', "profile_cpu", &profile_cpu,
- "CPU to profile on"),
+ OPT_STRING('C', "cpu", &cpu_list, "cpu",
+ "list of cpus to monitor"),
OPT_BOOLEAN('f', "force", &force,
"overwrite existing data file (deprecated)"),
OPT_U64('c', "count", &user_interval, "event period to sample"),
@@ -815,17 +826,19 @@ static const struct option options[] = {
"Sample addresses"),
OPT_BOOLEAN('n', "no-samples", &no_samples,
"don't sample"),
+ OPT_BOOLEAN('N', "no-buildid-cache", &no_buildid,
+ "do not update the buildid cache"),
OPT_END()
};
int cmd_record(int argc, const char **argv, const char *prefix __used)
{
- int i,j;
+ int i, j, err = -ENOMEM;
argc = parse_options(argc, argv, options, record_usage,
PARSE_OPT_STOP_AT_NON_OPTION);
if (!argc && target_pid == -1 && target_tid == -1 &&
- !system_wide && profile_cpu == -1)
+ !system_wide && !cpu_list)
usage_with_options(record_usage, options);
if (force && append_file) {
@@ -839,6 +852,8 @@ int cmd_record(int argc, const char **argv, const char *prefix __used)
}
symbol__init();
+ if (no_buildid)
+ disable_buildid_cache();
if (!nr_counters) {
nr_counters = 1;
@@ -857,7 +872,7 @@ int cmd_record(int argc, const char **argv, const char *prefix __used)
} else {
all_tids=malloc(sizeof(pid_t));
if (!all_tids)
- return -ENOMEM;
+ goto out_symbol_exit;
all_tids[0] = target_tid;
thread_num = 1;
@@ -867,13 +882,13 @@ int cmd_record(int argc, const char **argv, const char *prefix __used)
for (j = 0; j < MAX_COUNTERS; j++) {
fd[i][j] = malloc(sizeof(int)*thread_num);
if (!fd[i][j])
- return -ENOMEM;
+ goto out_free_fd;
}
}
event_array = malloc(
sizeof(struct pollfd)*MAX_NR_CPUS*MAX_COUNTERS*thread_num);
if (!event_array)
- return -ENOMEM;
+ goto out_free_fd;
if (user_interval != ULLONG_MAX)
default_interval = user_interval;
@@ -889,8 +904,22 @@ int cmd_record(int argc, const char **argv, const char *prefix __used)
default_interval = freq;
} else {
fprintf(stderr, "frequency and count are zero, aborting\n");
- exit(EXIT_FAILURE);
+ err = -EINVAL;
+ goto out_free_event_array;
}
- return __cmd_record(argc, argv);
+ err = __cmd_record(argc, argv);
+
+out_free_event_array:
+ free(event_array);
+out_free_fd:
+ for (i = 0; i < MAX_NR_CPUS; i++) {
+ for (j = 0; j < MAX_COUNTERS; j++)
+ free(fd[i][j]);
+ }
+ free(all_tids);
+ all_tids = NULL;
+out_symbol_exit:
+ symbol__exit();
+ return err;
}
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.