[PATCH v3 4/4] sunrpc: remove unused svc_version vs_count field

[Jeff Layton <jlayton@kernel.org>]

Now that svc_seq_show() and the nfsd netlink stats handler both use
the per-netns svc_stat vs_count arrays, the global per-version
vs_count percpu counters are no longer read by anything. Remove the
vs_count field from struct svc_version and all the associated
DEFINE_PER_CPU_ALIGNED arrays and initializers across nfsd, lockd,
and the NFS client callback service.

Assisted-by: Claude:claude-opus-4-6
Signed-off-by: Jeff Layton <jlayton@kernel.org>
---
 fs/lockd/svc4proc.c        | 4 ----
 fs/lockd/svcproc.c         | 7 -------
 fs/nfs/callback_xdr.c      | 6 ------
 fs/nfsd/localio.c          | 3 ---
 fs/nfsd/nfs2acl.c          | 3 ---
 fs/nfsd/nfs3acl.c          | 3 ---
 fs/nfsd/nfs3proc.c         | 3 ---
 fs/nfsd/nfs4proc.c         | 3 ---
 fs/nfsd/nfsproc.c          | 3 ---
 include/linux/sunrpc/svc.h | 1 -
 net/sunrpc/svc.c           | 3 ---
 11 files changed, 39 deletions(-)

diff --git a/fs/lockd/svc4proc.c b/fs/lockd/svc4proc.c
index 78e675470c4b..8910ee9c2c24 100644
--- a/fs/lockd/svc4proc.c
+++ b/fs/lockd/svc4proc.c
@@ -1420,14 +1420,10 @@ union nlm4svc_xdrstore {
 	struct nlm4_shareres_wrapper	shareres;
 };
 
-static DEFINE_PER_CPU_ALIGNED(unsigned long,
-			      nlm4svc_call_counters[ARRAY_SIZE(nlm4svc_procedures)]);
-
 const struct svc_version nlmsvc_version4 = {
 	.vs_vers	= 4,
 	.vs_nproc	= ARRAY_SIZE(nlm4svc_procedures),
 	.vs_proc	= nlm4svc_procedures,
-	.vs_count	= nlm4svc_call_counters,
 	.vs_dispatch	= nlmsvc_dispatch,
 	.vs_xdrsize	= sizeof(union nlm4svc_xdrstore),
 };
diff --git a/fs/lockd/svcproc.c b/fs/lockd/svcproc.c
index 4836887f11ef..8f81d95fc5ff 100644
--- a/fs/lockd/svcproc.c
+++ b/fs/lockd/svcproc.c
@@ -1433,25 +1433,18 @@ union nlmsvc_xdrstore {
  * NLMv1 defines only procedures 1 - 15. Linux lockd also implements
  * procedures 0 (NULL) and 16 (SM_NOTIFY).
  */
-static DEFINE_PER_CPU_ALIGNED(unsigned long, nlm1svc_call_counters[17]);
-
 const struct svc_version nlmsvc_version1 = {
 	.vs_vers	= 1,
 	.vs_nproc	= 17,
 	.vs_proc	= nlmsvc_procedures,
-	.vs_count	= nlm1svc_call_counters,
 	.vs_dispatch	= nlmsvc_dispatch,
 	.vs_xdrsize	= sizeof(union nlmsvc_xdrstore),
 };
 
-static DEFINE_PER_CPU_ALIGNED(unsigned long,
-			      nlm3svc_call_counters[ARRAY_SIZE(nlmsvc_procedures)]);
-
 const struct svc_version nlmsvc_version3 = {
 	.vs_vers	= 3,
 	.vs_nproc	= ARRAY_SIZE(nlmsvc_procedures),
 	.vs_proc	= nlmsvc_procedures,
-	.vs_count	= nlm3svc_call_counters,
 	.vs_dispatch	= nlmsvc_dispatch,
 	.vs_xdrsize	= sizeof(union nlmsvc_xdrstore),
 };
diff --git a/fs/nfs/callback_xdr.c b/fs/nfs/callback_xdr.c
index 4382baddc9ee..eec6040556c9 100644
--- a/fs/nfs/callback_xdr.c
+++ b/fs/nfs/callback_xdr.c
@@ -1090,26 +1090,20 @@ static const struct svc_procedure nfs4_callback_procedures1[] = {
 	}
 };
 
-static DEFINE_PER_CPU_ALIGNED(unsigned long,
-			      nfs4_callback_count1[ARRAY_SIZE(nfs4_callback_procedures1)]);
 const struct svc_version nfs4_callback_version1 = {
 	.vs_vers = 1,
 	.vs_nproc = ARRAY_SIZE(nfs4_callback_procedures1),
 	.vs_proc = nfs4_callback_procedures1,
-	.vs_count = nfs4_callback_count1,
 	.vs_xdrsize = NFS4_CALLBACK_XDRSIZE,
 	.vs_dispatch = nfs_callback_dispatch,
 	.vs_hidden = true,
 	.vs_need_cong_ctrl = true,
 };
 
-static DEFINE_PER_CPU_ALIGNED(unsigned long,
-			      nfs4_callback_count4[ARRAY_SIZE(nfs4_callback_procedures1)]);
 const struct svc_version nfs4_callback_version4 = {
 	.vs_vers = 4,
 	.vs_nproc = ARRAY_SIZE(nfs4_callback_procedures1),
 	.vs_proc = nfs4_callback_procedures1,
-	.vs_count = nfs4_callback_count4,
 	.vs_xdrsize = NFS4_CALLBACK_XDRSIZE,
 	.vs_dispatch = nfs_callback_dispatch,
 	.vs_hidden = true,
diff --git a/fs/nfsd/localio.c b/fs/nfsd/localio.c
index c3eb0557b3e1..c458c01e9478 100644
--- a/fs/nfsd/localio.c
+++ b/fs/nfsd/localio.c
@@ -210,14 +210,11 @@ static const struct svc_procedure localio_procedures1[] = {
 };
 
 #define LOCALIO_NR_PROCEDURES ARRAY_SIZE(localio_procedures1)
-static DEFINE_PER_CPU_ALIGNED(unsigned long,
-			      localio_count[LOCALIO_NR_PROCEDURES]);
 const struct svc_version localio_version1 = {
 	.vs_vers	= 1,
 	.vs_nproc	= LOCALIO_NR_PROCEDURES,
 	.vs_proc	= localio_procedures1,
 	.vs_dispatch	= nfsd_dispatch,
-	.vs_count	= localio_count,
 	.vs_xdrsize	= XDR_QUADLEN(UUID_SIZE),
 	.vs_hidden	= true,
 };
diff --git a/fs/nfsd/nfs2acl.c b/fs/nfsd/nfs2acl.c
index 827f90194c43..0fd6d9def3b4 100644
--- a/fs/nfsd/nfs2acl.c
+++ b/fs/nfsd/nfs2acl.c
@@ -389,13 +389,10 @@ static const struct svc_procedure nfsd_acl_procedures2[5] = {
 	},
 };
 
-static DEFINE_PER_CPU_ALIGNED(unsigned long,
-			      nfsd_acl_count2[ARRAY_SIZE(nfsd_acl_procedures2)]);
 const struct svc_version nfsd_acl_version2 = {
 	.vs_vers	= 2,
 	.vs_nproc	= ARRAY_SIZE(nfsd_acl_procedures2),
 	.vs_proc	= nfsd_acl_procedures2,
-	.vs_count	= nfsd_acl_count2,
 	.vs_dispatch	= nfsd_dispatch,
 	.vs_xdrsize	= NFS3_SVC_XDRSIZE,
 };
diff --git a/fs/nfsd/nfs3acl.c b/fs/nfsd/nfs3acl.c
index a87f9d7f32be..6b6b289db636 100644
--- a/fs/nfsd/nfs3acl.c
+++ b/fs/nfsd/nfs3acl.c
@@ -278,13 +278,10 @@ static const struct svc_procedure nfsd_acl_procedures3[3] = {
 	},
 };
 
-static DEFINE_PER_CPU_ALIGNED(unsigned long,
-			      nfsd_acl_count3[ARRAY_SIZE(nfsd_acl_procedures3)]);
 const struct svc_version nfsd_acl_version3 = {
 	.vs_vers	= 3,
 	.vs_nproc	= ARRAY_SIZE(nfsd_acl_procedures3),
 	.vs_proc	= nfsd_acl_procedures3,
-	.vs_count	= nfsd_acl_count3,
 	.vs_dispatch	= nfsd_dispatch,
 	.vs_xdrsize	= NFS3_SVC_XDRSIZE,
 };
diff --git a/fs/nfsd/nfs3proc.c b/fs/nfsd/nfs3proc.c
index aeda7a802bdf..2d5ab2178702 100644
--- a/fs/nfsd/nfs3proc.c
+++ b/fs/nfsd/nfs3proc.c
@@ -1068,13 +1068,10 @@ static const struct svc_procedure nfsd_procedures3[22] = {
 	},
 };
 
-static DEFINE_PER_CPU_ALIGNED(unsigned long,
-			      nfsd_count3[ARRAY_SIZE(nfsd_procedures3)]);
 const struct svc_version nfsd_version3 = {
 	.vs_vers	= 3,
 	.vs_nproc	= ARRAY_SIZE(nfsd_procedures3),
 	.vs_proc	= nfsd_procedures3,
 	.vs_dispatch	= nfsd_dispatch,
-	.vs_count	= nfsd_count3,
 	.vs_xdrsize	= NFS3_SVC_XDRSIZE,
 };
diff --git a/fs/nfsd/nfs4proc.c b/fs/nfsd/nfs4proc.c
index 0c37d7c6d28c..3e9819fa6cee 100644
--- a/fs/nfsd/nfs4proc.c
+++ b/fs/nfsd/nfs4proc.c
@@ -4129,13 +4129,10 @@ static const struct svc_procedure nfsd_procedures4[2] = {
 	},
 };
 
-static DEFINE_PER_CPU_ALIGNED(unsigned long,
-			      nfsd_count4[ARRAY_SIZE(nfsd_procedures4)]);
 const struct svc_version nfsd_version4 = {
 	.vs_vers		= 4,
 	.vs_nproc		= ARRAY_SIZE(nfsd_procedures4),
 	.vs_proc		= nfsd_procedures4,
-	.vs_count		= nfsd_count4,
 	.vs_dispatch		= nfsd_dispatch,
 	.vs_xdrsize		= NFS4_SVC_XDRSIZE,
 	.vs_rpcb_optnl		= true,
diff --git a/fs/nfsd/nfsproc.c b/fs/nfsd/nfsproc.c
index 8873033d1e82..9efd261fae45 100644
--- a/fs/nfsd/nfsproc.c
+++ b/fs/nfsd/nfsproc.c
@@ -838,13 +838,10 @@ static const struct svc_procedure nfsd_procedures2[18] = {
 	},
 };
 
-static DEFINE_PER_CPU_ALIGNED(unsigned long,
-			      nfsd_count2[ARRAY_SIZE(nfsd_procedures2)]);
 const struct svc_version nfsd_version2 = {
 	.vs_vers	= 2,
 	.vs_nproc	= ARRAY_SIZE(nfsd_procedures2),
 	.vs_proc	= nfsd_procedures2,
-	.vs_count	= nfsd_count2,
 	.vs_dispatch	= nfsd_dispatch,
 	.vs_xdrsize	= NFS2_SVC_XDRSIZE,
 };
diff --git a/include/linux/sunrpc/svc.h b/include/linux/sunrpc/svc.h
index 4be6204f6630..db9ee1d3a50b 100644
--- a/include/linux/sunrpc/svc.h
+++ b/include/linux/sunrpc/svc.h
@@ -408,7 +408,6 @@ struct svc_version {
 	u32			vs_vers;	/* version number */
 	u32			vs_nproc;	/* number of procedures */
 	const struct svc_procedure *vs_proc;	/* per-procedure info */
-	unsigned long __percpu	*vs_count;	/* call counts */
 	u32			vs_xdrsize;	/* xdrsize needed for this version */
 
 	/* Don't register with rpcbind */
diff --git a/net/sunrpc/svc.c b/net/sunrpc/svc.c
index 200b57e633dd..61e1c56c3657 100644
--- a/net/sunrpc/svc.c
+++ b/net/sunrpc/svc.c
@@ -1405,9 +1405,6 @@ svc_generic_init_request(struct svc_rqst *rqstp,
 	memset(rqstp->rq_argp, 0, procp->pc_argzero);
 	memset(rqstp->rq_resp, 0, procp->pc_ressize);
 
-	/* Bump per-procedure stats counter */
-	this_cpu_inc(versp->vs_count[rqstp->rq_proc]);
-
 	/* Bump per-net per-procedure stats counter */
 	if (rqstp->rq_server->sv_stats &&
 	    rqstp->rq_server->sv_stats->program == progp &&

-- 
2.54.0