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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778/* 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)