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SUNRPC: Improve observability in svc_tcp_accept() 

The -ENOMEM arm could fire repeatedly if the system runs low on
memory, so remove it.

Don't bother to trace -EAGAIN error events, since those fire after
a listener is created (with no work done) and once again after an
accept has been handled successfully (again, with no work done).

Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
This commit is contained in:
Chuck Lever 2023-05-15 09:32:53 -04:00
parent cce4ee9c78
commit d7900daea0
1 changed files with 2 additions and 7 deletions
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9
net/sunrpc/svcsock.c
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@ -886,13 +886,8 @@ static struct svc_xprt *svc_tcp_accept(struct svc_xprt *xprt)
clear_bit(XPT_CONN, &svsk->sk_xprt.xpt_flags);
err = kernel_accept(sock, &newsock, O_NONBLOCK);
if (err < 0) {
if (err == -ENOMEM)
printk(KERN_WARNING "%s: no more sockets!\n",
serv->sv_name);
else if (err != -EAGAIN)
net_warn_ratelimited("%s: accept failed (err %d)!\n",
serv->sv_name, -err);
trace_svcsock_accept_err(xprt, serv->sv_name, err);
if (err != -EAGAIN)
trace_svcsock_accept_err(xprt, serv->sv_name, err);
return NULL;
}
if (IS_ERR(sock_alloc_file(newsock, O_NONBLOCK, NULL)))