From 907e34a7d01d99d7e10a6090f2bdd247bbc5de9a Mon Sep 17 00:00:00 2001 From: Chuck Lever Date: Mon, 27 Nov 2023 11:33:24 -0500 Subject: svcrdma: Add lockdep class keys for transport locks Two svcrdma-related transport locks can become quite contended. Collate their use and make them easy to find in /proc/lock_stat for better observability. Signed-off-by: Chuck Lever --- net/sunrpc/xprtrdma/svc_rdma_transport.c | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'net/sunrpc') diff --git a/net/sunrpc/xprtrdma/svc_rdma_transport.c b/net/sunrpc/xprtrdma/svc_rdma_transport.c index c046916df007..3826da1c15f3 100644 --- a/net/sunrpc/xprtrdma/svc_rdma_transport.c +++ b/net/sunrpc/xprtrdma/svc_rdma_transport.c @@ -125,6 +125,9 @@ static void qp_event_handler(struct ib_event *event, void *context) static struct svcxprt_rdma *svc_rdma_create_xprt(struct svc_serv *serv, struct net *net, int node) { + static struct lock_class_key svcrdma_rwctx_lock; + static struct lock_class_key svcrdma_sctx_lock; + static struct lock_class_key svcrdma_dto_lock; struct svcxprt_rdma *cma_xprt; cma_xprt = kzalloc_node(sizeof(*cma_xprt), GFP_KERNEL, node); @@ -141,8 +144,11 @@ static struct svcxprt_rdma *svc_rdma_create_xprt(struct svc_serv *serv, spin_lock_init(&cma_xprt->sc_lock); spin_lock_init(&cma_xprt->sc_rq_dto_lock); + lockdep_set_class(&cma_xprt->sc_rq_dto_lock, &svcrdma_dto_lock); spin_lock_init(&cma_xprt->sc_send_lock); + lockdep_set_class(&cma_xprt->sc_send_lock, &svcrdma_sctx_lock); spin_lock_init(&cma_xprt->sc_rw_ctxt_lock); + lockdep_set_class(&cma_xprt->sc_rw_ctxt_lock, &svcrdma_rwctx_lock); /* * Note that this implies that the underlying transport support -- cgit