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svcrdma: Add a utility workqueue to svcrdma 

To handle work in the background, set up an UNBOUND workqueue for
svcrdma. Subsequent patches will make use of it.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
This commit is contained in:
Chuck Lever 2023-11-21 11:40:26 -05:00
parent 877118c667
commit 9c7e1a0658
3 changed files with 26 additions and 8 deletions
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1
include/linux/sunrpc/svc_rdma.h
View File

@ -65,6 +65,7 @@ extern unsigned int svcrdma_ord;
extern unsigned int svcrdma_max_requests;
extern unsigned int svcrdma_max_bc_requests;
extern unsigned int svcrdma_max_req_size;
extern struct workqueue_struct *svcrdma_wq;
extern struct percpu_counter svcrdma_stat_read;
extern struct percpu_counter svcrdma_stat_recv;

32
net/sunrpc/xprtrdma/svc_rdma.c
View File

@ -256,28 +256,44 @@ out_err:
return rc;
}
struct workqueue_struct *svcrdma_wq;
void svc_rdma_cleanup(void)
{
dprintk("SVCRDMA Module Removed, deregister RPC RDMA transport\n");
svc_unreg_xprt_class(&svc_rdma_class);
svc_rdma_proc_cleanup();
if (svcrdma_wq) {
struct workqueue_struct *wq = svcrdma_wq;
svcrdma_wq = NULL;
destroy_workqueue(wq);
}
dprintk("SVCRDMA Module Removed, deregister RPC RDMA transport\n");
}
int svc_rdma_init(void)
{
struct workqueue_struct *wq;
int rc;
wq = alloc_workqueue("svcrdma", WQ_UNBOUND, 0);
if (!wq)
return -ENOMEM;
rc = svc_rdma_proc_init();
if (rc) {
destroy_workqueue(wq);
return rc;
}
svcrdma_wq = wq;
svc_reg_xprt_class(&svc_rdma_class);
dprintk("SVCRDMA Module Init, register RPC RDMA transport\n");
dprintk("\tsvcrdma_ord : %d\n", svcrdma_ord);
dprintk("\tmax_requests : %u\n", svcrdma_max_requests);
dprintk("\tmax_bc_requests : %u\n", svcrdma_max_bc_requests);
dprintk("\tmax_inline : %d\n", svcrdma_max_req_size);
rc = svc_rdma_proc_init();
if (rc)
return rc;
/* Register RDMA with the SVC transport switch */
svc_reg_xprt_class(&svc_rdma_class);
return 0;
}

1
net/sunrpc/xprtrdma/svc_rdma_transport.c
View File

@ -547,6 +547,7 @@ static void __svc_rdma_free(struct work_struct *work)
/* This blocks until the Completion Queues are empty */
if (rdma->sc_qp && !IS_ERR(rdma->sc_qp))
ib_drain_qp(rdma->sc_qp);
flush_workqueue(svcrdma_wq);
svc_rdma_flush_recv_queues(rdma);