diff options
| author | Jens Axboe <axboe@kernel.dk> | 2026-01-17 08:27:23 -0700 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2026-01-27 11:10:46 -0700 |
| commit | e7c30675a7fb79d94400987865a3bd620458ca1a (patch) | |
| tree | 59e7c274e821fc3f683702d96ed07bf73de96140 /io_uring/bpf_filter.h | |
| parent | 8768770cf5d76d177fa2200e6957a372e61e06b5 (diff) | |
io_uring/bpf_filter: cache lookup table in ctx->bpf_filters
Currently a few pointer dereferences need to be made to both check if
BPF filters are installed, and then also to retrieve the actual filter
for the opcode. Cache the table in ctx->bpf_filters to avoid that.
Add a bit of debug info on ring exit to show if we ever got this wrong.
Small risk of that given that the table is currently only updated in one
spot, but once task forking is enabled, that will add one more spot.
Reviewed-by: Christian Brauner <brauner@kernel.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'io_uring/bpf_filter.h')
| -rw-r--r-- | io_uring/bpf_filter.h | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/io_uring/bpf_filter.h b/io_uring/bpf_filter.h index 27eae9705473..9f3cdb92eb16 100644 --- a/io_uring/bpf_filter.h +++ b/io_uring/bpf_filter.h @@ -6,18 +6,18 @@ #ifdef CONFIG_IO_URING_BPF -int __io_uring_run_bpf_filters(struct io_restriction *res, struct io_kiocb *req); +int __io_uring_run_bpf_filters(struct io_bpf_filter __rcu **filters, struct io_kiocb *req); int io_register_bpf_filter(struct io_restriction *res, struct io_uring_bpf __user *arg); void io_put_bpf_filters(struct io_restriction *res); -static inline int io_uring_run_bpf_filters(struct io_restriction *res, +static inline int io_uring_run_bpf_filters(struct io_bpf_filter __rcu **filters, struct io_kiocb *req) { - if (res->bpf_filters) - return __io_uring_run_bpf_filters(res, req); + if (filters) + return __io_uring_run_bpf_filters(filters, req); return 0; } @@ -29,7 +29,7 @@ static inline int io_register_bpf_filter(struct io_restriction *res, { return -EINVAL; } -static inline int io_uring_run_bpf_filters(struct io_restriction *res, +static inline int io_uring_run_bpf_filters(struct io_bpf_filter __rcu **filters, struct io_kiocb *req) { return 0; |