diff options
| author | Hao Xu <howeyxu@tencent.com> | 2022-06-16 11:22:02 +0200 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2022-07-25 02:39:13 +0200 |
| commit | 38513c464d3d45b4088c82f6e42d9cdbc5ee57e6 (patch) | |
| tree | defce3565cffbddce9dda6a8466298939015584c /io_uring/io_uring.c | |
| parent | io_uring: poll: remove unnecessary req->ref set (diff) | |
| download | linux-38513c464d3d45b4088c82f6e42d9cdbc5ee57e6.tar.xz linux-38513c464d3d45b4088c82f6e42d9cdbc5ee57e6.zip | |
io_uring: switch cancel_hash to use per entry spinlock
Add a new io_hash_bucket structure so that each bucket in cancel_hash
has separate spinlock. Use per entry lock for cancel_hash, this removes
some completion lock invocation and remove contension between different
cancel_hash entries.
Signed-off-by: Hao Xu <howeyxu@tencent.com>
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/05d1e135b0c8bce9d1441e6346776589e5783e26.1655371007.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'io_uring/io_uring.c')
| -rw-r--r-- | io_uring/io_uring.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/io_uring/io_uring.c b/io_uring/io_uring.c index 957a5bc1b528..ac6946e3f174 100644 --- a/io_uring/io_uring.c +++ b/io_uring/io_uring.c @@ -89,6 +89,7 @@ #include "fdinfo.h" #include "kbuf.h" #include "rsrc.h" +#include "cancel.h" #include "timeout.h" #include "poll.h" @@ -260,11 +261,13 @@ static __cold struct io_ring_ctx *io_ring_ctx_alloc(struct io_uring_params *p) if (hash_bits <= 0) hash_bits = 1; ctx->cancel_hash_bits = hash_bits; - ctx->cancel_hash = kmalloc((1U << hash_bits) * sizeof(struct hlist_head), - GFP_KERNEL); + ctx->cancel_hash = + kmalloc((1U << hash_bits) * sizeof(struct io_hash_bucket), + GFP_KERNEL); if (!ctx->cancel_hash) goto err; - __hash_init(ctx->cancel_hash, 1U << hash_bits); + + init_hash_table(ctx->cancel_hash, 1U << hash_bits); ctx->dummy_ubuf = kzalloc(sizeof(*ctx->dummy_ubuf), GFP_KERNEL); if (!ctx->dummy_ubuf) |