Allows to test if allocation/free works
Signed-off-by: Benjamin Tissoires bentiss@kernel.org
---
changes in v2: - remove #define CLOCK_MONOTONIC 1 leftover --- tools/testing/selftests/bpf/bpf_experimental.h | 1 + tools/testing/selftests/bpf/prog_tests/wq.c | 22 ++++++++++++++++++++++ tools/testing/selftests/bpf/progs/wq.c | 20 +++++++++++++++++--- 3 files changed, 40 insertions(+), 3 deletions(-)
diff --git a/tools/testing/selftests/bpf/bpf_experimental.h b/tools/testing/selftests/bpf/bpf_experimental.h index b80b39f76034..93c5a6c446b3 100644 --- a/tools/testing/selftests/bpf/bpf_experimental.h +++ b/tools/testing/selftests/bpf/bpf_experimental.h @@ -471,6 +471,7 @@ extern struct cgroup_subsys_state *bpf_iter_css_next(struct bpf_iter_css *it) __ extern void bpf_iter_css_destroy(struct bpf_iter_css *it) __weak __ksym;
extern int bpf_wq_init(struct bpf_wq *wq, void *p__map, unsigned int flags) __weak __ksym; +extern int bpf_wq_start(struct bpf_wq *wq, unsigned int flags) __weak __ksym; extern int bpf_wq_set_callback_impl(struct bpf_wq *wq, int (callback_fn)(void *map, int *key, struct bpf_wq *wq), unsigned int flags__k, void *aux__ign) __ksym; diff --git a/tools/testing/selftests/bpf/prog_tests/wq.c b/tools/testing/selftests/bpf/prog_tests/wq.c index 26ab69796103..8a4a91d944cc 100644 --- a/tools/testing/selftests/bpf/prog_tests/wq.c +++ b/tools/testing/selftests/bpf/prog_tests/wq.c @@ -6,9 +6,31 @@
void serial_test_wq(void) { + struct wq *wq_skel = NULL; + int err, prog_fd; + LIBBPF_OPTS(bpf_test_run_opts, topts);
RUN_TESTS(wq); + + /* re-run the success test to check if the timer was actually executed */ + + wq_skel = wq__open_and_load(); + if (!ASSERT_OK_PTR(wq_skel, "wq_skel_load")) + return; + + err = wq__attach(wq_skel); + if (!ASSERT_OK(err, "wq_attach")) + return; + + prog_fd = bpf_program__fd(wq_skel->progs.test_syscall_array_sleepable); + err = bpf_prog_test_run_opts(prog_fd, &topts); + ASSERT_OK(err, "test_run"); + ASSERT_EQ(topts.retval, 0, "test_run"); + + usleep(50); /* 10 usecs should be enough, but give it extra */ + + ASSERT_EQ(wq_skel->bss->ok_sleepable, (1 << 1), "ok_sleepable"); }
void serial_test_failures_wq(void) diff --git a/tools/testing/selftests/bpf/progs/wq.c b/tools/testing/selftests/bpf/progs/wq.c index f746296d32b1..8011a27a2fbd 100644 --- a/tools/testing/selftests/bpf/progs/wq.c +++ b/tools/testing/selftests/bpf/progs/wq.c @@ -49,12 +49,19 @@ struct { __type(value, struct elem); } lru SEC(".maps");
+__u32 ok; +__u32 ok_sleepable; + static int test_elem_callback(void *map, int *key, int (callback_fn)(void *map, int *key, struct bpf_wq *wq)) { struct elem init = {}, *val; struct bpf_wq *wq;
+ if ((ok & (1 << *key) || + (ok_sleepable & (1 << *key)))) + return -22; + if (map == &lru && bpf_map_update_elem(map, key, &init, 0)) return -1; @@ -70,6 +77,9 @@ static int test_elem_callback(void *map, int *key, if (bpf_wq_set_callback(wq, callback_fn, 0)) return -4;
+ if (bpf_wq_start(wq, 0)) + return -5; + return 0; }
@@ -79,6 +89,10 @@ static int test_hmap_elem_callback(void *map, int *key, struct hmap_elem init = {}, *val; struct bpf_wq *wq;
+ if ((ok & (1 << *key) || + (ok_sleepable & (1 << *key)))) + return -22; + if (bpf_map_update_elem(map, key, &init, 0)) return -1;
@@ -93,12 +107,12 @@ static int test_hmap_elem_callback(void *map, int *key, if (bpf_wq_set_callback(wq, callback_fn, 0)) return -4;
+ if (bpf_wq_start(wq, 0)) + return -5; + return 0; }
-__u32 ok; -__u32 ok_sleepable; - /* callback for non sleepable workqueue */ static int wq_callback(void *map, int *key, struct bpf_wq *work) {