mirror of
https://github.com/torvalds/linux.git
synced 2026-04-18 06:44:00 -04:00
f96bc0fa92
ops.cpu_acquire/release() are deprecated by commit a3f5d48222
("sched_ext: Allow scx_bpf_reenqueue_local() to be called from
anywhere") in favor of handling CPU preemption via the sched_switch
tracepoint.
In the maximal selftest, replace the cpu_acquire/release stubs with a
minimal sched_switch TP program. Attach all non-struct_ops programs
(including the new TP) via maximal__attach() after disabling auto-attach
for the maximal_ops struct_ops map, which is managed manually in run().
Apply the same fix to reload_loop, which also uses the maximal skeleton.
Signed-off-by: Cheng-Yang Chou <yphbchou0911@gmail.com>
Reviewed-by: Andrea Righi <arighi@nvidia.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
78 lines
1.7 KiB
C
78 lines
1.7 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
/*
|
|
* Copyright (c) 2024 Meta Platforms, Inc. and affiliates.
|
|
* Copyright (c) 2024 David Vernet <dvernet@meta.com>
|
|
*/
|
|
#include <bpf/bpf.h>
|
|
#include <pthread.h>
|
|
#include <scx/common.h>
|
|
#include <sys/wait.h>
|
|
#include <unistd.h>
|
|
#include "maximal.bpf.skel.h"
|
|
#include "scx_test.h"
|
|
|
|
static struct maximal *skel;
|
|
static pthread_t threads[2];
|
|
|
|
bool force_exit = false;
|
|
|
|
static enum scx_test_status setup(void **ctx)
|
|
{
|
|
skel = maximal__open();
|
|
SCX_FAIL_IF(!skel, "Failed to open");
|
|
SCX_ENUM_INIT(skel);
|
|
SCX_FAIL_IF(maximal__load(skel), "Failed to load skel");
|
|
|
|
bpf_map__set_autoattach(skel->maps.maximal_ops, false);
|
|
SCX_FAIL_IF(maximal__attach(skel), "Failed to attach skel");
|
|
|
|
return SCX_TEST_PASS;
|
|
}
|
|
|
|
static void *do_reload_loop(void *arg)
|
|
{
|
|
u32 i;
|
|
|
|
for (i = 0; i < 1024 && !force_exit; i++) {
|
|
struct bpf_link *link;
|
|
|
|
link = bpf_map__attach_struct_ops(skel->maps.maximal_ops);
|
|
if (link)
|
|
bpf_link__destroy(link);
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static enum scx_test_status run(void *ctx)
|
|
{
|
|
int err;
|
|
void *ret;
|
|
|
|
err = pthread_create(&threads[0], NULL, do_reload_loop, NULL);
|
|
SCX_FAIL_IF(err, "Failed to create thread 0");
|
|
|
|
err = pthread_create(&threads[1], NULL, do_reload_loop, NULL);
|
|
SCX_FAIL_IF(err, "Failed to create thread 1");
|
|
|
|
SCX_FAIL_IF(pthread_join(threads[0], &ret), "thread 0 failed");
|
|
SCX_FAIL_IF(pthread_join(threads[1], &ret), "thread 1 failed");
|
|
|
|
return SCX_TEST_PASS;
|
|
}
|
|
|
|
static void cleanup(void *ctx)
|
|
{
|
|
force_exit = true;
|
|
maximal__destroy(skel);
|
|
}
|
|
|
|
struct scx_test reload_loop = {
|
|
.name = "reload_loop",
|
|
.description = "Stress test loading and unloading schedulers repeatedly in a tight loop",
|
|
.setup = setup,
|
|
.run = run,
|
|
.cleanup = cleanup,
|
|
};
|
|
REGISTER_SCX_TEST(&reload_loop)
|