SUNRPC: display human-readable procedure name in rpc_iostats output

Add fields to the rpc_procinfo struct that allow the display of a
human-readable name for each procedure in the rpc_iostats output.

Also fix it so that the NFSv4 stats are broken up correctly by
sub-procedure number.  NFSv4 uses only two real RPC procedures:
NULL, and COMPOUND.

Test plan:
Mount with NFSv2, NFSv3, and NFSv4, and do "cat /proc/self/mountstats".

Signed-off-by: Chuck Lever <cel@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

1 files changed, 6 insertions, 0 deletions

diff --git a/net/sunrpc/pmap_clnt.c b/net/sunrpc/pmap_clnt.c
index 332cc5d362d5..efa00bd9ff9e 100644
--- a/net/sunrpc/pmap_clnt.c
+++ b/net/sunrpc/pmap_clnt.c
@@ -261,6 +261,8 @@ static struct rpc_procinfo	pmap_procedures[] = {
           .p_decode             = (kxdrproc_t) xdr_decode_bool,
           .p_bufsiz             = 4,
           .p_count              = 1,
+          .p_statidx            = PMAP_SET,
+          .p_name               = "SET",
         },
 [PMAP_UNSET] = {
           .p_proc               = PMAP_UNSET,
@@ -268,6 +270,8 @@ static struct rpc_procinfo	pmap_procedures[] = {
           .p_decode             = (kxdrproc_t) xdr_decode_bool,
           .p_bufsiz             = 4,
           .p_count              = 1,
+          .p_statidx            = PMAP_UNSET,
+          .p_name               = "UNSET",
         },
 [PMAP_GETPORT] = {
           .p_proc               = PMAP_GETPORT,
@@ -275,6 +279,8 @@ static struct rpc_procinfo	pmap_procedures[] = {
           .p_decode             = (kxdrproc_t) xdr_decode_port,
           .p_bufsiz             = 4,
           .p_count              = 1,
+          .p_statidx            = PMAP_GETPORT,
+          .p_name               = "GETPORT",
         },
 };