summaryrefslogtreecommitdiff
path: root/io_uring/rsrc.c
diff options
context:
space:
mode:
authorPavel Begunkov <asml.silence@gmail.com>2023-04-04 15:39:54 +0300
committerJens Axboe <axboe@kernel.dk>2023-04-04 18:30:39 +0300
commit9eae8655f9cd2eeed99fb7a0d2bb22816c17e497 (patch)
tree9839eb9739e972da6b62d363843f1fa95e48ea4b /io_uring/rsrc.c
parent36b9818a5a84cb7c977fb723babca1c8d74f288f (diff)
downloadlinux-9eae8655f9cd2eeed99fb7a0d2bb22816c17e497.tar.xz
io_uring/rsrc: cache struct io_rsrc_node
Add allocation cache for struct io_rsrc_node, it's always allocated and put under ->uring_lock, so it doesn't need any extra synchronisation around caches. Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> Link: https://lore.kernel.org/r/252a9d9ef9654e6467af30fdc02f57c0118fb76e.1680576071.git.asml.silence@gmail.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'io_uring/rsrc.c')
-rw-r--r--io_uring/rsrc.c23
1 files changed, 15 insertions, 8 deletions
diff --git a/io_uring/rsrc.c b/io_uring/rsrc.c
index 0f4e245dee1b..345631091d80 100644
--- a/io_uring/rsrc.c
+++ b/io_uring/rsrc.c
@@ -164,7 +164,7 @@ static void __io_rsrc_put_work(struct io_rsrc_node *ref_node)
kfree(prsrc);
}
- io_rsrc_node_destroy(ref_node);
+ io_rsrc_node_destroy(rsrc_data->ctx, ref_node);
if (atomic_dec_and_test(&rsrc_data->refs))
complete(&rsrc_data->done);
}
@@ -175,9 +175,10 @@ void io_wait_rsrc_data(struct io_rsrc_data *data)
wait_for_completion(&data->done);
}
-void io_rsrc_node_destroy(struct io_rsrc_node *ref_node)
+void io_rsrc_node_destroy(struct io_ring_ctx *ctx, struct io_rsrc_node *node)
{
- kfree(ref_node);
+ if (!io_alloc_cache_put(&ctx->rsrc_node_cache, &node->cache))
+ kfree(node);
}
void io_rsrc_node_ref_zero(struct io_rsrc_node *node)
@@ -198,13 +199,19 @@ void io_rsrc_node_ref_zero(struct io_rsrc_node *node)
}
}
-static struct io_rsrc_node *io_rsrc_node_alloc(void)
+static struct io_rsrc_node *io_rsrc_node_alloc(struct io_ring_ctx *ctx)
{
struct io_rsrc_node *ref_node;
+ struct io_cache_entry *entry;
- ref_node = kzalloc(sizeof(*ref_node), GFP_KERNEL);
- if (!ref_node)
- return NULL;
+ entry = io_alloc_cache_get(&ctx->rsrc_node_cache);
+ if (entry) {
+ ref_node = container_of(entry, struct io_rsrc_node, cache);
+ } else {
+ ref_node = kzalloc(sizeof(*ref_node), GFP_KERNEL);
+ if (!ref_node)
+ return NULL;
+ }
ref_node->refs = 1;
INIT_LIST_HEAD(&ref_node->node);
@@ -243,7 +250,7 @@ int io_rsrc_node_switch_start(struct io_ring_ctx *ctx)
{
if (ctx->rsrc_backup_node)
return 0;
- ctx->rsrc_backup_node = io_rsrc_node_alloc();
+ ctx->rsrc_backup_node = io_rsrc_node_alloc(ctx);
return ctx->rsrc_backup_node ? 0 : -ENOMEM;
}