TWxSoftware/twx-linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

svcrdma: Add lockdep class keys for transport locks

Browse Source 
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 <chuck.lever@oracle.com>
This commit is contained in:
Chuck Lever 2023-11-27 11:33:24 -05:00
parent bfb81535c2
commit 907e34a7d0
1 changed files with 6 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
net/sunrpc/xprtrdma/svc_rdma_transport.c
View File

@ -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