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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-18 17:39:57 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-18 17:39:57 +0000
commitdc50eab76b709d68175a358d6e23a5a3890764d3 (patch)
treec754d0390db060af0213ff994f0ac310e4cfd6e9 /tools/perf/bench
parentAdding debian version 6.6.15-2. (diff)
downloadlinux-dc50eab76b709d68175a358d6e23a5a3890764d3.tar.xz
linux-dc50eab76b709d68175a358d6e23a5a3890764d3.zip
Merging upstream version 6.7.7.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'tools/perf/bench')
-rw-r--r--tools/perf/bench/sched-messaging.c102
-rw-r--r--tools/perf/bench/sched-pipe.c132
-rw-r--r--tools/perf/bench/uprobe.c1
3 files changed, 193 insertions, 42 deletions
diff --git a/tools/perf/bench/sched-messaging.c b/tools/perf/bench/sched-messaging.c
index fa1f8f9988..93dcd9dba3 100644
--- a/tools/perf/bench/sched-messaging.c
+++ b/tools/perf/bench/sched-messaging.c
@@ -36,6 +36,7 @@ static bool use_pipes = false;
static unsigned int nr_loops = 100;
static bool thread_mode = false;
static unsigned int num_groups = 10;
+static unsigned int total_children = 0;
static struct list_head sender_contexts = LIST_HEAD_INIT(sender_contexts);
static struct list_head receiver_contexts = LIST_HEAD_INIT(receiver_contexts);
@@ -55,6 +56,13 @@ struct receiver_context {
int wakefd;
};
+union messaging_worker {
+ pthread_t thread;
+ pid_t pid;
+};
+
+static union messaging_worker *worker_tab;
+
static void fdpair(int fds[2])
{
if (use_pipes) {
@@ -98,7 +106,7 @@ static void *sender(struct sender_context *ctx)
again:
ret = write(ctx->out_fds[j], data + done,
- sizeof(data)-done);
+ sizeof(data) - done);
if (ret < 0)
err(EXIT_FAILURE, "SENDER: write");
done += ret;
@@ -139,30 +147,12 @@ again:
return NULL;
}
-static pthread_t create_worker(void *ctx, void *(*func)(void *))
+static void create_thread_worker(union messaging_worker *worker,
+ void *ctx, void *(*func)(void *))
{
pthread_attr_t attr;
- pthread_t childid;
int ret;
- if (!thread_mode) {
- /* process mode */
- /* Fork the receiver. */
- switch (fork()) {
- case -1:
- err(EXIT_FAILURE, "fork()");
- break;
- case 0:
- (*func) (ctx);
- exit(0);
- break;
- default:
- break;
- }
-
- return (pthread_t)0;
- }
-
if (pthread_attr_init(&attr) != 0)
err(EXIT_FAILURE, "pthread_attr_init:");
@@ -171,15 +161,37 @@ static pthread_t create_worker(void *ctx, void *(*func)(void *))
err(EXIT_FAILURE, "pthread_attr_setstacksize");
#endif
- ret = pthread_create(&childid, &attr, func, ctx);
+ ret = pthread_create(&worker->thread, &attr, func, ctx);
if (ret != 0)
err(EXIT_FAILURE, "pthread_create failed");
pthread_attr_destroy(&attr);
- return childid;
}
-static void reap_worker(pthread_t id)
+static void create_process_worker(union messaging_worker *worker,
+ void *ctx, void *(*func)(void *))
+{
+ /* Fork the receiver. */
+ worker->pid = fork();
+
+ if (worker->pid == -1) {
+ err(EXIT_FAILURE, "fork()");
+ } else if (worker->pid == 0) {
+ (*func) (ctx);
+ exit(0);
+ }
+}
+
+static void create_worker(union messaging_worker *worker,
+ void *ctx, void *(*func)(void *))
+{
+ if (!thread_mode)
+ return create_process_worker(worker, ctx, func);
+ else
+ return create_thread_worker(worker, ctx, func);
+}
+
+static void reap_worker(union messaging_worker *worker)
{
int proc_status;
void *thread_status;
@@ -190,19 +202,19 @@ static void reap_worker(pthread_t id)
if (!WIFEXITED(proc_status))
exit(1);
} else {
- pthread_join(id, &thread_status);
+ pthread_join(worker->thread, &thread_status);
}
}
/* One group of senders and receivers */
-static unsigned int group(pthread_t *pth,
+static unsigned int group(union messaging_worker *worker,
unsigned int num_fds,
int ready_out,
int wakefd)
{
unsigned int i;
- struct sender_context *snd_ctx = malloc(sizeof(struct sender_context)
- + num_fds * sizeof(int));
+ struct sender_context *snd_ctx = malloc(sizeof(struct sender_context) +
+ num_fds * sizeof(int));
if (!snd_ctx)
err(EXIT_FAILURE, "malloc()");
@@ -226,7 +238,7 @@ static unsigned int group(pthread_t *pth,
ctx->ready_out = ready_out;
ctx->wakefd = wakefd;
- pth[i] = create_worker(ctx, (void *)receiver);
+ create_worker(worker + i, ctx, (void *)receiver);
snd_ctx->out_fds[i] = fds[1];
if (!thread_mode)
@@ -239,7 +251,7 @@ static unsigned int group(pthread_t *pth,
snd_ctx->wakefd = wakefd;
snd_ctx->num_fds = num_fds;
- pth[num_fds+i] = create_worker(snd_ctx, (void *)sender);
+ create_worker(worker + num_fds + i, snd_ctx, (void *)sender);
}
/* Close the fds we have left */
@@ -251,6 +263,17 @@ static unsigned int group(pthread_t *pth,
return num_fds * 2;
}
+static void sig_handler(int sig __maybe_unused)
+{
+ unsigned int i;
+
+ /*
+ * When exit abnormally, kill all forked child processes.
+ */
+ for (i = 0; i < total_children; i++)
+ kill(worker_tab[i].pid, SIGKILL);
+}
+
static const struct option options[] = {
OPT_BOOLEAN('p', "pipe", &use_pipes,
"Use pipe() instead of socketpair()"),
@@ -268,27 +291,30 @@ static const char * const bench_sched_message_usage[] = {
int bench_sched_messaging(int argc, const char **argv)
{
- unsigned int i, total_children;
+ unsigned int i;
struct timeval start, stop, diff;
unsigned int num_fds = 20;
int readyfds[2], wakefds[2];
char dummy;
- pthread_t *pth_tab;
struct sender_context *pos, *n;
argc = parse_options(argc, argv, options,
bench_sched_message_usage, 0);
- pth_tab = malloc(num_fds * 2 * num_groups * sizeof(pthread_t));
- if (!pth_tab)
+ worker_tab = malloc(num_fds * 2 * num_groups * sizeof(union messaging_worker));
+ if (!worker_tab)
err(EXIT_FAILURE, "main:malloc()");
fdpair(readyfds);
fdpair(wakefds);
- total_children = 0;
+ if (!thread_mode) {
+ signal(SIGINT, sig_handler);
+ signal(SIGTERM, sig_handler);
+ }
+
for (i = 0; i < num_groups; i++)
- total_children += group(pth_tab+total_children, num_fds,
+ total_children += group(worker_tab + total_children, num_fds,
readyfds[1], wakefds[0]);
/* Wait for everyone to be ready */
@@ -304,7 +330,7 @@ int bench_sched_messaging(int argc, const char **argv)
/* Reap them all */
for (i = 0; i < total_children; i++)
- reap_worker(pth_tab[i]);
+ reap_worker(worker_tab + i);
gettimeofday(&stop, NULL);
@@ -332,7 +358,7 @@ int bench_sched_messaging(int argc, const char **argv)
break;
}
- free(pth_tab);
+ free(worker_tab);
list_for_each_entry_safe(pos, n, &sender_contexts, list) {
list_del_init(&pos->list);
free(pos);
diff --git a/tools/perf/bench/sched-pipe.c b/tools/perf/bench/sched-pipe.c
index a960e7a93a..3af6d3c55a 100644
--- a/tools/perf/bench/sched-pipe.c
+++ b/tools/perf/bench/sched-pipe.c
@@ -10,7 +10,9 @@
* Ported to perf by Hitoshi Mitake <mitake@dcl.info.waseda.ac.jp>
*/
#include <subcmd/parse-options.h>
+#include <api/fs/fs.h>
#include "bench.h"
+#include "util/cgroup.h"
#include <unistd.h>
#include <stdio.h>
@@ -19,6 +21,7 @@
#include <sys/wait.h>
#include <string.h>
#include <errno.h>
+#include <fcntl.h>
#include <assert.h>
#include <sys/time.h>
#include <sys/types.h>
@@ -31,6 +34,7 @@ struct thread_data {
int nr;
int pipe_read;
int pipe_write;
+ bool cgroup_failed;
pthread_t pthread;
};
@@ -40,9 +44,48 @@ static int loops = LOOPS_DEFAULT;
/* Use processes by default: */
static bool threaded;
+static char *cgrp_names[2];
+static struct cgroup *cgrps[2];
+
+static int parse_two_cgroups(const struct option *opt __maybe_unused,
+ const char *str, int unset __maybe_unused)
+{
+ char *p = strdup(str);
+ char *q;
+ int ret = -1;
+
+ if (p == NULL) {
+ fprintf(stderr, "memory allocation failure\n");
+ return -1;
+ }
+
+ q = strchr(p, ',');
+ if (q == NULL) {
+ fprintf(stderr, "it should have two cgroup names: %s\n", p);
+ goto out;
+ }
+ *q = '\0';
+
+ cgrp_names[0] = strdup(p);
+ cgrp_names[1] = strdup(q + 1);
+
+ if (cgrp_names[0] == NULL || cgrp_names[1] == NULL) {
+ fprintf(stderr, "memory allocation failure\n");
+ goto out;
+ }
+ ret = 0;
+
+out:
+ free(p);
+ return ret;
+}
+
static const struct option options[] = {
OPT_INTEGER('l', "loop", &loops, "Specify number of loops"),
OPT_BOOLEAN('T', "threaded", &threaded, "Specify threads/process based task setup"),
+ OPT_CALLBACK('G', "cgroups", NULL, "SEND,RECV",
+ "Put sender and receivers in given cgroups",
+ parse_two_cgroups),
OPT_END()
};
@@ -51,12 +94,89 @@ static const char * const bench_sched_pipe_usage[] = {
NULL
};
+static int enter_cgroup(int nr)
+{
+ char buf[32];
+ int fd, len, ret;
+ int saved_errno;
+ struct cgroup *cgrp;
+ pid_t pid;
+
+ if (cgrp_names[nr] == NULL)
+ return 0;
+
+ if (cgrps[nr] == NULL) {
+ cgrps[nr] = cgroup__new(cgrp_names[nr], /*do_open=*/true);
+ if (cgrps[nr] == NULL)
+ goto err;
+ }
+ cgrp = cgrps[nr];
+
+ if (threaded)
+ pid = syscall(__NR_gettid);
+ else
+ pid = getpid();
+
+ snprintf(buf, sizeof(buf), "%d\n", pid);
+ len = strlen(buf);
+
+ /* try cgroup v2 interface first */
+ if (threaded)
+ fd = openat(cgrp->fd, "cgroup.threads", O_WRONLY);
+ else
+ fd = openat(cgrp->fd, "cgroup.procs", O_WRONLY);
+
+ /* try cgroup v1 if failed */
+ if (fd < 0 && errno == ENOENT)
+ fd = openat(cgrp->fd, "tasks", O_WRONLY);
+
+ if (fd < 0)
+ goto err;
+
+ ret = write(fd, buf, len);
+ close(fd);
+
+ if (ret != len) {
+ printf("Cannot enter to cgroup: %s\n", cgrp->name);
+ return -1;
+ }
+ return 0;
+
+err:
+ saved_errno = errno;
+ printf("Failed to open cgroup file in %s\n", cgrp_names[nr]);
+
+ if (saved_errno == ENOENT) {
+ char mnt[PATH_MAX];
+
+ if (cgroupfs_find_mountpoint(mnt, sizeof(mnt), "perf_event") == 0)
+ printf(" Hint: create the cgroup first, like 'mkdir %s/%s'\n",
+ mnt, cgrp_names[nr]);
+ } else if (saved_errno == EACCES && geteuid() > 0) {
+ printf(" Hint: try to run as root\n");
+ }
+
+ return -1;
+}
+
+static void exit_cgroup(int nr)
+{
+ cgroup__put(cgrps[nr]);
+ free(cgrp_names[nr]);
+}
+
static void *worker_thread(void *__tdata)
{
struct thread_data *td = __tdata;
int m = 0, i;
int ret;
+ ret = enter_cgroup(td->nr);
+ if (ret < 0) {
+ td->cgroup_failed = true;
+ return NULL;
+ }
+
for (i = 0; i < loops; i++) {
if (!td->nr) {
ret = read(td->pipe_read, &m, sizeof(int));
@@ -76,7 +196,8 @@ static void *worker_thread(void *__tdata)
int bench_sched_pipe(int argc, const char **argv)
{
- struct thread_data threads[2], *td;
+ struct thread_data threads[2] = {};
+ struct thread_data *td;
int pipe_1[2], pipe_2[2];
struct timeval start, stop, diff;
unsigned long long result_usec = 0;
@@ -112,9 +233,7 @@ int bench_sched_pipe(int argc, const char **argv)
}
}
-
if (threaded) {
-
for (t = 0; t < nr_threads; t++) {
td = threads + t;
@@ -128,7 +247,6 @@ int bench_sched_pipe(int argc, const char **argv)
ret = pthread_join(td->pthread, NULL);
BUG_ON(ret);
}
-
} else {
pid = fork();
assert(pid >= 0);
@@ -147,6 +265,12 @@ int bench_sched_pipe(int argc, const char **argv)
gettimeofday(&stop, NULL);
timersub(&stop, &start, &diff);
+ exit_cgroup(0);
+ exit_cgroup(1);
+
+ if (threads[0].cgroup_failed || threads[1].cgroup_failed)
+ return 0;
+
switch (bench_format) {
case BENCH_FORMAT_DEFAULT:
printf("# Executed %d pipe operations between two %s\n\n",
diff --git a/tools/perf/bench/uprobe.c b/tools/perf/bench/uprobe.c
index 914c0817fe..5c71fdc419 100644
--- a/tools/perf/bench/uprobe.c
+++ b/tools/perf/bench/uprobe.c
@@ -89,6 +89,7 @@ static int bench_uprobe__setup_bpf_skel(enum bench_uprobe bench)
return err;
cleanup:
bench_uprobe_bpf__destroy(skel);
+ skel = NULL;
return err;
}