From: Mykyta Yatsenko <mykyta.yatsenko5@gmail.com>
To: bpf@vger.kernel.org, ast@kernel.org, andrii@kernel.org,
daniel@iogearbox.net, kafai@meta.com, kernel-team@meta.com,
memxor@gmail.com, eddyz87@gmail.com
Cc: Mykyta Yatsenko <yatsenko@meta.com>
Subject: [PATCH bpf-next v6 09/10] selftests/bpf: Add stress test for timer async cancel
Date: Tue, 20 Jan 2026 15:59:18 +0000 [thread overview]
Message-ID: <20260120-timer_nolock-v6-9-670ffdd787b4@meta.com> (raw)
In-Reply-To: <20260120-timer_nolock-v6-0-670ffdd787b4@meta.com>
From: Mykyta Yatsenko <yatsenko@meta.com>
Extend BPF timer selftest to run stress test for async cancel.
Signed-off-by: Mykyta Yatsenko <yatsenko@meta.com>
---
tools/testing/selftests/bpf/prog_tests/timer.c | 18 +++++++++++++++++-
tools/testing/selftests/bpf/progs/timer.c | 14 +++++++++++---
2 files changed, 28 insertions(+), 4 deletions(-)
diff --git a/tools/testing/selftests/bpf/prog_tests/timer.c b/tools/testing/selftests/bpf/prog_tests/timer.c
index 4d853d1bd2a71b3d0f1ba0daa7a699945b4457fe..a157a2a699e638c9f21712b1e7194fc4b6382e71 100644
--- a/tools/testing/selftests/bpf/prog_tests/timer.c
+++ b/tools/testing/selftests/bpf/prog_tests/timer.c
@@ -23,13 +23,14 @@ static void *spin_lock_thread(void *arg)
}
-static int timer_stress(struct timer *timer_skel)
+static int timer_stress_runner(struct timer *timer_skel, bool async_cancel)
{
int i, err = 1, prog_fd;
LIBBPF_OPTS(bpf_test_run_opts, topts);
pthread_t thread_id[NUM_THR];
void *ret;
+ timer_skel->bss->async_cancel = async_cancel;
prog_fd = bpf_program__fd(timer_skel->progs.race);
for (i = 0; i < NUM_THR; i++) {
err = pthread_create(&thread_id[i], NULL,
@@ -46,6 +47,16 @@ static int timer_stress(struct timer *timer_skel)
return err;
}
+static int timer_stress(struct timer *timer_skel)
+{
+ return timer_stress_runner(timer_skel, false);
+}
+
+static int timer_stress_async_cancel(struct timer *timer_skel)
+{
+ return timer_stress_runner(timer_skel, true);
+}
+
static int timer(struct timer *timer_skel)
{
int err, prog_fd;
@@ -118,6 +129,11 @@ void serial_test_timer_stress(void)
test_timer(timer_stress);
}
+void serial_test_timer_stress_async_cancel(void)
+{
+ test_timer(timer_stress_async_cancel);
+}
+
void test_timer_interrupt(void)
{
struct timer_interrupt *skel = NULL;
diff --git a/tools/testing/selftests/bpf/progs/timer.c b/tools/testing/selftests/bpf/progs/timer.c
index 4c677c001258a4c05cd570ec52363d49d8eea169..a81413514e4b07ef745f27eade71454234e731e8 100644
--- a/tools/testing/selftests/bpf/progs/timer.c
+++ b/tools/testing/selftests/bpf/progs/timer.c
@@ -1,13 +1,17 @@
// SPDX-License-Identifier: GPL-2.0
/* Copyright (c) 2021 Facebook */
-#include <linux/bpf.h>
-#include <time.h>
+
+#include <vmlinux.h>
#include <stdbool.h>
#include <errno.h>
#include <bpf/bpf_helpers.h>
#include <bpf/bpf_tracing.h>
+#define CLOCK_MONOTONIC 1
+#define CLOCK_BOOTTIME 7
+
char _license[] SEC("license") = "GPL";
+
struct hmap_elem {
int counter;
struct bpf_timer timer;
@@ -63,6 +67,7 @@ __u64 callback_check = 52;
__u64 callback2_check = 52;
__u64 pinned_callback_check;
__s32 pinned_cpu;
+bool async_cancel = 0;
#define ARRAY 1
#define HTAB 2
@@ -419,7 +424,10 @@ int race(void *ctx)
bpf_timer_set_callback(timer, race_timer_callback);
bpf_timer_start(timer, 0, 0);
- bpf_timer_cancel(timer);
+ if (async_cancel)
+ bpf_timer_cancel_async(timer);
+ else
+ bpf_timer_cancel(timer);
return 0;
}
--
2.52.0
next prev parent reply other threads:[~2026-01-20 15:59 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-01-20 15:59 [PATCH bpf-next v6 00/10] bpf: Avoid locks in bpf_timer and bpf_wq Mykyta Yatsenko
2026-01-20 15:59 ` [PATCH bpf-next v6 01/10] bpf: Factor out timer deletion helper Mykyta Yatsenko
2026-01-20 15:59 ` [PATCH bpf-next v6 02/10] bpf: Remove unnecessary arguments from bpf_async_set_callback() Mykyta Yatsenko
2026-01-20 15:59 ` [PATCH bpf-next v6 03/10] bpf: Introduce lock-free bpf_async_update_prog_callback() Mykyta Yatsenko
2026-01-20 15:59 ` [PATCH bpf-next v6 04/10] bpf: Simplify bpf_timer_cancel() Mykyta Yatsenko
2026-01-20 15:59 ` [PATCH bpf-next v6 05/10] bpf: Enable bpf timer and workqueue use in NMI Mykyta Yatsenko
2026-01-20 18:31 ` Andrii Nakryiko
2026-01-20 21:17 ` Mykyta Yatsenko
2026-01-21 0:26 ` Andrii Nakryiko
2026-01-20 15:59 ` [PATCH bpf-next v6 06/10] bpf: Add verifier support for bpf_timer argument in kfuncs Mykyta Yatsenko
2026-01-20 15:59 ` [PATCH bpf-next v6 07/10] bpf: Introduce bpf_timer_cancel_async() kfunc Mykyta Yatsenko
2026-01-20 15:59 ` [PATCH bpf-next v6 08/10] selftests/bpf: Refactor timer selftests Mykyta Yatsenko
2026-01-20 15:59 ` Mykyta Yatsenko [this message]
2026-01-20 15:59 ` [PATCH bpf-next v6 10/10] selftests/bpf: Verify bpf_timer_cancel_async works Mykyta Yatsenko
2026-01-21 2:30 ` [PATCH bpf-next v6 00/10] bpf: Avoid locks in bpf_timer and bpf_wq patchwork-bot+netdevbpf
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