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Diffstat (limited to 'tools/perf/builtin-record.c')
-rw-r--r--tools/perf/builtin-record.c112
1 files changed, 68 insertions, 44 deletions
diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
index 89a5ddcd1de..a5a050af8e7 100644
--- a/tools/perf/builtin-record.c
+++ b/tools/perf/builtin-record.c
@@ -15,6 +15,9 @@
#include "util/string.h"
#include "util/header.h"
+#include "util/event.h"
+#include "util/debug.h"
+#include "util/trace-event.h"
#include <unistd.h>
#include <sched.h>
@@ -42,10 +45,11 @@ static int inherit = 1;
static int force = 0;
static int append_file = 0;
static int call_graph = 0;
-static int verbose = 0;
static int inherit_stat = 0;
static int no_samples = 0;
static int sample_address = 0;
+static int multiplex = 0;
+static int multiplex_fd = -1;
static long samples;
static struct timeval last_read;
@@ -62,24 +66,6 @@ static int file_new = 1;
struct perf_header *header;
-struct mmap_event {
- struct perf_event_header header;
- u32 pid;
- u32 tid;
- u64 start;
- u64 len;
- u64 pgoff;
- char filename[PATH_MAX];
-};
-
-struct comm_event {
- struct perf_event_header header;
- u32 pid;
- u32 tid;
- char comm[16];
-};
-
-
struct mmap_data {
int counter;
void *base;
@@ -91,7 +77,7 @@ static struct mmap_data mmap_array[MAX_NR_CPUS][MAX_COUNTERS];
static unsigned long mmap_read_head(struct mmap_data *md)
{
- struct perf_counter_mmap_page *pc = md->base;
+ struct perf_event_mmap_page *pc = md->base;
long head;
head = pc->data_head;
@@ -102,7 +88,7 @@ static unsigned long mmap_read_head(struct mmap_data *md)
static void mmap_write_tail(struct mmap_data *md, unsigned long tail)
{
- struct perf_counter_mmap_page *pc = md->base;
+ struct perf_event_mmap_page *pc = md->base;
/*
* ensure all reads are done before we write the tail out.
@@ -247,7 +233,7 @@ static pid_t pid_synthesize_comm_event(pid_t pid, int full)
}
}
- comm_ev.header.type = PERF_EVENT_COMM;
+ comm_ev.header.type = PERF_RECORD_COMM;
size = ALIGN(size, sizeof(u64));
comm_ev.header.size = sizeof(comm_ev) - (sizeof(comm_ev.comm) - size);
@@ -302,7 +288,7 @@ static void pid_synthesize_mmap_samples(pid_t pid, pid_t tgid)
while (1) {
char bf[BUFSIZ], *pbf = bf;
struct mmap_event mmap_ev = {
- .header = { .type = PERF_EVENT_MMAP },
+ .header = { .type = PERF_RECORD_MMAP },
};
int n;
size_t size;
@@ -369,7 +355,7 @@ static void synthesize_all(void)
static int group_fd;
-static struct perf_header_attr *get_header_attr(struct perf_counter_attr *a, int nr)
+static struct perf_header_attr *get_header_attr(struct perf_event_attr *a, int nr)
{
struct perf_header_attr *h_attr;
@@ -385,7 +371,7 @@ static struct perf_header_attr *get_header_attr(struct perf_counter_attr *a, int
static void create_counter(int counter, int cpu, pid_t pid)
{
- struct perf_counter_attr *attr = attrs + counter;
+ struct perf_event_attr *attr = attrs + counter;
struct perf_header_attr *h_attr;
int track = !counter; /* only the first counter needs these */
struct {
@@ -419,8 +405,11 @@ static void create_counter(int counter, int cpu, pid_t pid)
if (call_graph)
attr->sample_type |= PERF_SAMPLE_CALLCHAIN;
- if (raw_samples)
+ if (raw_samples) {
+ attr->sample_type |= PERF_SAMPLE_TIME;
attr->sample_type |= PERF_SAMPLE_RAW;
+ attr->sample_type |= PERF_SAMPLE_CPU;
+ }
attr->mmap = track;
attr->comm = track;
@@ -428,7 +417,7 @@ static void create_counter(int counter, int cpu, pid_t pid)
attr->disabled = 1;
try_again:
- fd[nr_cpu][counter] = sys_perf_counter_open(attr, pid, cpu, group_fd, 0);
+ fd[nr_cpu][counter] = sys_perf_event_open(attr, pid, cpu, group_fd, 0);
if (fd[nr_cpu][counter] < 0) {
int err = errno;
@@ -455,7 +444,7 @@ try_again:
printf("\n");
error("perfcounter syscall returned with %d (%s)\n",
fd[nr_cpu][counter], strerror(err));
- die("No CONFIG_PERF_COUNTERS=y kernel support configured?\n");
+ die("No CONFIG_PERF_EVENTS=y kernel support configured?\n");
exit(-1);
}
@@ -483,22 +472,31 @@ try_again:
*/
if (group && group_fd == -1)
group_fd = fd[nr_cpu][counter];
+ if (multiplex && multiplex_fd == -1)
+ multiplex_fd = fd[nr_cpu][counter];
- event_array[nr_poll].fd = fd[nr_cpu][counter];
- event_array[nr_poll].events = POLLIN;
- nr_poll++;
-
- mmap_array[nr_cpu][counter].counter = counter;
- mmap_array[nr_cpu][counter].prev = 0;
- mmap_array[nr_cpu][counter].mask = mmap_pages*page_size - 1;
- mmap_array[nr_cpu][counter].base = mmap(NULL, (mmap_pages+1)*page_size,
- PROT_READ|PROT_WRITE, MAP_SHARED, fd[nr_cpu][counter], 0);
- if (mmap_array[nr_cpu][counter].base == MAP_FAILED) {
- error("failed to mmap with %d (%s)\n", errno, strerror(errno));
- exit(-1);
+ if (multiplex && fd[nr_cpu][counter] != multiplex_fd) {
+ int ret;
+
+ ret = ioctl(fd[nr_cpu][counter], PERF_EVENT_IOC_SET_OUTPUT, multiplex_fd);
+ assert(ret != -1);
+ } else {
+ event_array[nr_poll].fd = fd[nr_cpu][counter];
+ event_array[nr_poll].events = POLLIN;
+ nr_poll++;
+
+ mmap_array[nr_cpu][counter].counter = counter;
+ mmap_array[nr_cpu][counter].prev = 0;
+ mmap_array[nr_cpu][counter].mask = mmap_pages*page_size - 1;
+ mmap_array[nr_cpu][counter].base = mmap(NULL, (mmap_pages+1)*page_size,
+ PROT_READ|PROT_WRITE, MAP_SHARED, fd[nr_cpu][counter], 0);
+ if (mmap_array[nr_cpu][counter].base == MAP_FAILED) {
+ error("failed to mmap with %d (%s)\n", errno, strerror(errno));
+ exit(-1);
+ }
}
- ioctl(fd[nr_cpu][counter], PERF_COUNTER_IOC_ENABLE);
+ ioctl(fd[nr_cpu][counter], PERF_EVENT_IOC_ENABLE);
}
static void open_counters(int cpu, pid_t pid)
@@ -526,6 +524,7 @@ static int __cmd_record(int argc, const char **argv)
pid_t pid = 0;
int flags;
int ret;
+ unsigned long waking = 0;
page_size = sysconf(_SC_PAGE_SIZE);
nr_cpus = sysconf(_SC_NPROCESSORS_ONLN);
@@ -563,6 +562,17 @@ static int __cmd_record(int argc, const char **argv)
else
header = perf_header__new();
+
+ if (raw_samples) {
+ read_tracing_data(attrs, nr_counters);
+ } else {
+ for (i = 0; i < nr_counters; i++) {
+ if (attrs[i].sample_type & PERF_SAMPLE_RAW) {
+ read_tracing_data(attrs, nr_counters);
+ break;
+ }
+ }
+ }
atexit(atexit_header);
if (!system_wide) {
@@ -616,17 +626,29 @@ static int __cmd_record(int argc, const char **argv)
int hits = samples;
for (i = 0; i < nr_cpu; i++) {
- for (counter = 0; counter < nr_counters; counter++)
- mmap_read(&mmap_array[i][counter]);
+ for (counter = 0; counter < nr_counters; counter++) {
+ if (mmap_array[i][counter].base)
+ mmap_read(&mmap_array[i][counter]);
+ }
}
if (hits == samples) {
if (done)
break;
- ret = poll(event_array, nr_poll, 100);
+ ret = poll(event_array, nr_poll, -1);
+ waking++;
+ }
+
+ if (done) {
+ for (i = 0; i < nr_cpu; i++) {
+ for (counter = 0; counter < nr_counters; counter++)
+ ioctl(fd[i][counter], PERF_EVENT_IOC_DISABLE);
+ }
}
}
+ fprintf(stderr, "[ perf record: Woken up %ld times to write data ]\n", waking);
+
/*
* Approximate RIP event size: 24 bytes.
*/
@@ -683,6 +705,8 @@ static const struct option options[] = {
"Sample addresses"),
OPT_BOOLEAN('n', "no-samples", &no_samples,
"don't sample"),
+ OPT_BOOLEAN('M', "multiplex", &multiplex,
+ "multiplex counter output in a single channel"),
OPT_END()
};
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-29 00:11:38 +0000