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-rw-r--r--tools/perf/builtin-record.c73
1 files changed, 50 insertions, 23 deletions
diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
index 80dc5b790e47..6ab58cc99d53 100644
--- a/tools/perf/builtin-record.c
+++ b/tools/perf/builtin-record.c
@@ -30,8 +30,6 @@
#include <sched.h>
#include <sys/mman.h>
-#define FD(e, x, y) (*(int *)xyarray__entry(e->fd, x, y))
-
enum write_mode_t {
WRITE_FORCE,
WRITE_APPEND
@@ -47,7 +45,7 @@ static int freq = 1000;
static int output;
static int pipe_output = 0;
static const char *output_name = NULL;
-static int group = 0;
+static bool group = false;
static int realtime_prio = 0;
static bool nodelay = false;
static bool raw_samples = false;
@@ -75,6 +73,7 @@ static off_t post_processing_offset;
static struct perf_session *session;
static const char *cpu_list;
+static const char *progname;
static void advance_output(size_t size)
{
@@ -139,17 +138,29 @@ static void mmap_read(struct perf_mmap *md)
static volatile int done = 0;
static volatile int signr = -1;
+static volatile int child_finished = 0;
static void sig_handler(int sig)
{
+ if (sig == SIGCHLD)
+ child_finished = 1;
+
done = 1;
signr = sig;
}
static void sig_atexit(void)
{
- if (child_pid > 0)
- kill(child_pid, SIGTERM);
+ int status;
+
+ if (child_pid > 0) {
+ if (!child_finished)
+ kill(child_pid, SIGTERM);
+
+ wait(&status);
+ if (WIFSIGNALED(status))
+ psignal(WTERMSIG(status), progname);
+ }
if (signr == -1 || signr == SIGUSR1)
return;
@@ -163,6 +174,7 @@ static void config_attr(struct perf_evsel *evsel, struct perf_evlist *evlist)
struct perf_event_attr *attr = &evsel->attr;
int track = !evsel->idx; /* only the first counter needs these */
+ attr->disabled = 1;
attr->inherit = !no_inherit;
attr->read_format = PERF_FORMAT_TOTAL_TIME_ENABLED |
PERF_FORMAT_TOTAL_TIME_RUNNING |
@@ -250,13 +262,16 @@ static bool perf_evlist__equal(struct perf_evlist *evlist,
static void open_counters(struct perf_evlist *evlist)
{
- struct perf_evsel *pos;
+ struct perf_evsel *pos, *first;
if (evlist->cpus->map[0] < 0)
no_inherit = true;
+ first = list_entry(evlist->entries.next, struct perf_evsel, node);
+
list_for_each_entry(pos, &evlist->entries, node) {
struct perf_event_attr *attr = &pos->attr;
+ struct xyarray *group_fd = NULL;
/*
* Check if parse_single_tracepoint_event has already asked for
* PERF_SAMPLE_TIME.
@@ -271,15 +286,19 @@ static void open_counters(struct perf_evlist *evlist)
*/
bool time_needed = attr->sample_type & PERF_SAMPLE_TIME;
+ if (group && pos != first)
+ group_fd = first->fd;
+
config_attr(pos, evlist);
retry_sample_id:
attr->sample_id_all = sample_id_all_avail ? 1 : 0;
try_again:
- if (perf_evsel__open(pos, evlist->cpus, evlist->threads, group) < 0) {
+ if (perf_evsel__open(pos, evlist->cpus, evlist->threads, group,
+ group_fd) < 0) {
int err = errno;
if (err == EPERM || err == EACCES) {
- ui__warning_paranoid();
+ ui__error_paranoid();
exit(EXIT_FAILURE);
} else if (err == ENODEV && cpu_list) {
die("No such device - did you specify"
@@ -438,7 +457,6 @@ static void mmap_read_all(void)
static int __cmd_record(int argc, const char **argv)
{
- int i;
struct stat st;
int flags;
int err;
@@ -448,6 +466,8 @@ static int __cmd_record(int argc, const char **argv)
char buf;
struct machine *machine;
+ progname = argv[0];
+
page_size = sysconf(_SC_PAGE_SIZE);
atexit(sig_atexit);
@@ -516,6 +536,19 @@ static int __cmd_record(int argc, const char **argv)
if (have_tracepoints(&evsel_list->entries))
perf_header__set_feat(&session->header, HEADER_TRACE_INFO);
+ perf_header__set_feat(&session->header, HEADER_HOSTNAME);
+ perf_header__set_feat(&session->header, HEADER_OSRELEASE);
+ perf_header__set_feat(&session->header, HEADER_ARCH);
+ perf_header__set_feat(&session->header, HEADER_CPUDESC);
+ perf_header__set_feat(&session->header, HEADER_NRCPUS);
+ perf_header__set_feat(&session->header, HEADER_EVENT_DESC);
+ perf_header__set_feat(&session->header, HEADER_CMDLINE);
+ perf_header__set_feat(&session->header, HEADER_VERSION);
+ perf_header__set_feat(&session->header, HEADER_CPU_TOPOLOGY);
+ perf_header__set_feat(&session->header, HEADER_TOTAL_MEM);
+ perf_header__set_feat(&session->header, HEADER_NUMA_TOPOLOGY);
+ perf_header__set_feat(&session->header, HEADER_CPUID);
+
/* 512 kiB: default amount of unprivileged mlocked memory */
if (mmap_pages == UINT_MAX)
mmap_pages = (512 * 1024) / page_size;
@@ -674,6 +707,8 @@ static int __cmd_record(int argc, const char **argv)
}
}
+ perf_evlist__enable(evsel_list);
+
/*
* Let the child rip
*/
@@ -682,7 +717,6 @@ static int __cmd_record(int argc, const char **argv)
for (;;) {
int hits = samples;
- int thread;
mmap_read_all();
@@ -693,19 +727,8 @@ static int __cmd_record(int argc, const char **argv)
waking++;
}
- if (done) {
- for (i = 0; i < evsel_list->cpus->nr; i++) {
- struct perf_evsel *pos;
-
- list_for_each_entry(pos, &evsel_list->entries, node) {
- for (thread = 0;
- thread < evsel_list->threads->nr;
- thread++)
- ioctl(FD(pos, i, thread),
- PERF_EVENT_IOC_DISABLE);
- }
- }
- }
+ if (done)
+ perf_evlist__disable(evsel_list);
}
if (quiet || signr == SIGUSR1)
@@ -768,6 +791,8 @@ const struct option record_options[] = {
"child tasks do not inherit counters"),
OPT_UINTEGER('F', "freq", &user_freq, "profile at this frequency"),
OPT_UINTEGER('m', "mmap-pages", &mmap_pages, "number of mmap data pages"),
+ OPT_BOOLEAN(0, "group", &group,
+ "put the counters into a counter group"),
OPT_BOOLEAN('g', "call-graph", &call_graph,
"do call-graph (stack chain/backtrace) recording"),
OPT_INCR('v', "verbose", &verbose,
@@ -795,6 +820,8 @@ int cmd_record(int argc, const char **argv, const char *prefix __used)
int err = -ENOMEM;
struct perf_evsel *pos;
+ perf_header__set_cmdline(argc, argv);
+
evsel_list = perf_evlist__new(NULL, NULL);
if (evsel_list == NULL)
return -ENOMEM;
generated by cgit v1.2.3 (git 2.46.0) at 2025-04-25 23:40:03 +0000