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SUNRPC: Move initialization of rq_stime

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Micro-optimization: Call ktime_get() only when ->xpo_recvfrom() has
given us a full RPC message to process. rq_stime isn't used
otherwise, so this avoids pointless work.

Reviewed-by: Jeff Layton <jlayton@kernel.org>
Acked-by: Tom Talpey <tom@talpey.com>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
This commit is contained in:
Chuck Lever 2023-06-12 10:13:33 -04:00
parent 5581cf8efc
commit f8335a212a
1 changed files with 2 additions and 1 deletions
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3
net/sunrpc/svc_xprt.c
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@ -849,7 +849,6 @@ static int svc_handle_xprt(struct svc_rqst *rqstp, struct svc_xprt *xprt)
len = svc_deferred_recv(rqstp);
else
len = xprt->xpt_ops->xpo_recvfrom(rqstp);
rqstp->rq_stime = ktime_get();
rqstp->rq_reserved = serv->sv_max_mesg;
atomic_add(rqstp->rq_reserved, &xprt->xpt_reserved);
} else
@ -892,6 +891,7 @@ int svc_recv(struct svc_rqst *rqstp, long timeout)
err = -EAGAIN;
if (len <= 0)
goto out_release;
trace_svc_xdr_recvfrom(&rqstp->rq_arg);
clear_bit(XPT_OLD, &xprt->xpt_flags);
@ -900,6 +900,7 @@ int svc_recv(struct svc_rqst *rqstp, long timeout)
if (serv->sv_stats)
serv->sv_stats->netcnt++;
rqstp->rq_stime = ktime_get();
return len;
out_release:
rqstp->rq_res.len = 0;