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| author | Benjamin Tissoires <bentiss@kernel.org> | 2024-04-20 12:09:15 +0300 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2024-04-24 05:46:57 +0300 |
| commit | 8e83da9732d91c60fdc651b2486c8e5935eb0ca2 (patch) | |
| tree | 18999a6bd18485265aaa1b5767373890b899118a /kernel/bpf | |
| parent | 01b7b1c5f3cc029bdd2652eba61e953ccd286c0e (diff) | |
| download | linux-8e83da9732d91c60fdc651b2486c8e5935eb0ca2.tar.xz | |
bpf: add bpf_wq_start
again, copy/paste from bpf_timer_start().
Signed-off-by: Benjamin Tissoires <bentiss@kernel.org>
Link: https://lore.kernel.org/r/20240420-bpf_wq-v2-15-6c986a5a741f@kernel.org
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'kernel/bpf')
| -rw-r--r-- | kernel/bpf/helpers.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/kernel/bpf/helpers.c b/kernel/bpf/helpers.c index dd2eaaf77c93..047a21b7e4ba 100644 --- a/kernel/bpf/helpers.c +++ b/kernel/bpf/helpers.c @@ -2711,6 +2711,23 @@ __bpf_kfunc int bpf_wq_init(struct bpf_wq *wq, void *p__map, unsigned int flags) return __bpf_async_init(async, map, flags, BPF_ASYNC_TYPE_WQ); } +__bpf_kfunc int bpf_wq_start(struct bpf_wq *wq, unsigned int flags) +{ + struct bpf_async_kern *async = (struct bpf_async_kern *)wq; + struct bpf_work *w; + + if (in_nmi()) + return -EOPNOTSUPP; + if (flags) + return -EINVAL; + w = READ_ONCE(async->work); + if (!w || !READ_ONCE(w->cb.prog)) + return -EINVAL; + + schedule_work(&w->work); + return 0; +} + __bpf_kfunc int bpf_wq_set_callback_impl(struct bpf_wq *wq, int (callback_fn)(void *map, int *key, struct bpf_wq *wq), unsigned int flags, @@ -2804,6 +2821,7 @@ BTF_ID_FLAGS(func, bpf_dynptr_clone) BTF_ID_FLAGS(func, bpf_modify_return_test_tp) BTF_ID_FLAGS(func, bpf_wq_init) BTF_ID_FLAGS(func, bpf_wq_set_callback_impl) +BTF_ID_FLAGS(func, bpf_wq_start) BTF_KFUNCS_END(common_btf_ids) static const struct btf_kfunc_id_set common_kfunc_set = { |