diff options
| author | Kumar Kartikeya Dwivedi <memxor@gmail.com> | 2026-02-04 16:38:53 -0800 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2026-02-04 18:14:26 -0800 |
| commit | 5000a097f82c7695b7760c5b67c95f0eab4d209b (patch) | |
| tree | 303cdfc5cc1121aed84878e6c6c9b8b4e0ffb286 /kernel | |
| parent | 81502d7f20bf862b706f5174979bed88d3ab82b3 (diff) | |
bpf: Reset prog callback in bpf_async_cancel_and_free()
Replace prog and callback in bpf_async_cb after removing visibility of
bpf_async_cb in bpf_async_cancel_and_free() to increase the chances the
scheduled async callbacks short-circuit execution and exit early, and
not starting a RCU tasks trace section. This improves the overall time
spent in running the wq selftest.
Suggested-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Link: https://lore.kernel.org/r/20260205003853.527571-3-memxor@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/bpf/helpers.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/kernel/bpf/helpers.c b/kernel/bpf/helpers.c index b7aec34540c2..a4f039cee88b 100644 --- a/kernel/bpf/helpers.c +++ b/kernel/bpf/helpers.c @@ -1664,6 +1664,7 @@ static void bpf_async_cancel_and_free(struct bpf_async_kern *async) if (!cb) return; + bpf_async_update_prog_callback(cb, NULL, NULL); /* * No refcount_inc_not_zero(&cb->refcnt) here. Dropping the last * refcnt. Either synchronously or asynchronously in irq_work. |