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-rw-r--r--io_uring/io-wq.c9
-rw-r--r--io_uring/io-wq.h2
-rw-r--r--io_uring/io_uring.c29
-rw-r--r--io_uring/sqpoll.c15
-rw-r--r--io_uring/sqpoll.h1
5 files changed, 41 insertions, 15 deletions
diff --git a/io_uring/io-wq.c b/io_uring/io-wq.c
index 2da0b1ba6a56..62f345587df5 100644
--- a/io_uring/io-wq.c
+++ b/io_uring/io-wq.c
@@ -1306,13 +1306,16 @@ static int io_wq_cpu_offline(unsigned int cpu, struct hlist_node *node)
return __io_wq_cpu_online(wq, cpu, false);
}
-int io_wq_cpu_affinity(struct io_wq *wq, cpumask_var_t mask)
+int io_wq_cpu_affinity(struct io_uring_task *tctx, cpumask_var_t mask)
{
+ if (!tctx || !tctx->io_wq)
+ return -EINVAL;
+
rcu_read_lock();
if (mask)
- cpumask_copy(wq->cpu_mask, mask);
+ cpumask_copy(tctx->io_wq->cpu_mask, mask);
else
- cpumask_copy(wq->cpu_mask, cpu_possible_mask);
+ cpumask_copy(tctx->io_wq->cpu_mask, cpu_possible_mask);
rcu_read_unlock();
return 0;
diff --git a/io_uring/io-wq.h b/io_uring/io-wq.h
index 31228426d192..06d9ca90c577 100644
--- a/io_uring/io-wq.h
+++ b/io_uring/io-wq.h
@@ -50,7 +50,7 @@ void io_wq_put_and_exit(struct io_wq *wq);
void io_wq_enqueue(struct io_wq *wq, struct io_wq_work *work);
void io_wq_hash_work(struct io_wq_work *work, void *val);
-int io_wq_cpu_affinity(struct io_wq *wq, cpumask_var_t mask);
+int io_wq_cpu_affinity(struct io_uring_task *tctx, cpumask_var_t mask);
int io_wq_max_workers(struct io_wq *wq, int *new_count);
static inline bool io_wq_is_hashed(struct io_wq_work *work)
diff --git a/io_uring/io_uring.c b/io_uring/io_uring.c
index e189158ebbdd..e1a23f4993d3 100644
--- a/io_uring/io_uring.c
+++ b/io_uring/io_uring.c
@@ -4183,16 +4183,28 @@ static int io_register_enable_rings(struct io_ring_ctx *ctx)
return 0;
}
+static __cold int __io_register_iowq_aff(struct io_ring_ctx *ctx,
+ cpumask_var_t new_mask)
+{
+ int ret;
+
+ if (!(ctx->flags & IORING_SETUP_SQPOLL)) {
+ ret = io_wq_cpu_affinity(current->io_uring, new_mask);
+ } else {
+ mutex_unlock(&ctx->uring_lock);
+ ret = io_sqpoll_wq_cpu_affinity(ctx, new_mask);
+ mutex_lock(&ctx->uring_lock);
+ }
+
+ return ret;
+}
+
static __cold int io_register_iowq_aff(struct io_ring_ctx *ctx,
void __user *arg, unsigned len)
{
- struct io_uring_task *tctx = current->io_uring;
cpumask_var_t new_mask;
int ret;
- if (!tctx || !tctx->io_wq)
- return -EINVAL;
-
if (!alloc_cpumask_var(&new_mask, GFP_KERNEL))
return -ENOMEM;
@@ -4213,19 +4225,14 @@ static __cold int io_register_iowq_aff(struct io_ring_ctx *ctx,
return -EFAULT;
}
- ret = io_wq_cpu_affinity(tctx->io_wq, new_mask);
+ ret = __io_register_iowq_aff(ctx, new_mask);
free_cpumask_var(new_mask);
return ret;
}
static __cold int io_unregister_iowq_aff(struct io_ring_ctx *ctx)
{
- struct io_uring_task *tctx = current->io_uring;
-
- if (!tctx || !tctx->io_wq)
- return -EINVAL;
-
- return io_wq_cpu_affinity(tctx->io_wq, NULL);
+ return __io_register_iowq_aff(ctx, NULL);
}
static __cold int io_register_iowq_max_workers(struct io_ring_ctx *ctx,
diff --git a/io_uring/sqpoll.c b/io_uring/sqpoll.c
index 5e329e3cd470..ee2d2c687fda 100644
--- a/io_uring/sqpoll.c
+++ b/io_uring/sqpoll.c
@@ -421,3 +421,18 @@ err:
io_sq_thread_finish(ctx);
return ret;
}
+
+__cold int io_sqpoll_wq_cpu_affinity(struct io_ring_ctx *ctx,
+ cpumask_var_t mask)
+{
+ struct io_sq_data *sqd = ctx->sq_data;
+ int ret = -EINVAL;
+
+ if (sqd) {
+ io_sq_thread_park(sqd);
+ ret = io_wq_cpu_affinity(sqd->thread->io_uring, mask);
+ io_sq_thread_unpark(sqd);
+ }
+
+ return ret;
+}
diff --git a/io_uring/sqpoll.h b/io_uring/sqpoll.h
index e1b8d508d22d..8df37e8c9149 100644
--- a/io_uring/sqpoll.h
+++ b/io_uring/sqpoll.h
@@ -27,3 +27,4 @@ void io_sq_thread_park(struct io_sq_data *sqd);
void io_sq_thread_unpark(struct io_sq_data *sqd);
void io_put_sq_data(struct io_sq_data *sqd);
void io_sqpoll_wait_sq(struct io_ring_ctx *ctx);
+int io_sqpoll_wq_cpu_affinity(struct io_ring_ctx *ctx, cpumask_var_t mask);