9p: Reduce object size with CONFIG_NET_9P_DEBUG

Reduce object size by deduplicating formats.

Use vsprintf extension %pV.
Rename P9_DPRINTK uses to p9_debug, align arguments.
Add function for _p9_debug and macro to add __func__.
Add missing "\n"s to p9_debug uses.
Remove embedded function names as p9_debug adds it.
Remove P9_EPRINTK macro and convert use to pr_<level>.
Add and use pr_fmt and pr_<level>.

$ size fs/9p/built-in.o*
   text	   data	    bss	    dec	    hex	filename
  62133	    984	  16000	  79117	  1350d	fs/9p/built-in.o.new
  67342	    984	  16928	  85254	  14d06	fs/9p/built-in.o.old
$ size net/9p/built-in.o*
   text	   data	    bss	    dec	    hex	filename
  88792	   4148	  22024	 114964	  1c114	net/9p/built-in.o.new
  94072	   4148	  23232	 121452	  1da6c	net/9p/built-in.o.old

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>

1 files changed, 4 insertions, 4 deletions

diff --git a/net/9p/protocol.c b/net/9p/protocol.c
index 55e10a96c902..9ee48cb30179 100644
--- a/net/9p/protocol.c
+++ b/net/9p/protocol.c
@@ -534,7 +534,7 @@ int p9stat_read(struct p9_client *clnt, char *buf, int len, struct p9_wstat *st)
 
         ret = p9pdu_readf(&fake_pdu, clnt->proto_version, "S", st);
         if (ret) {
-                P9_DPRINTK(P9_DEBUG_9P, "<<< p9stat_read failed: %d\n", ret);
+                p9_debug(P9_DEBUG_9P, "<<< p9stat_read failed: %d\n", ret);
                 trace_9p_protocol_dump(clnt, &fake_pdu);
         }
 
@@ -558,8 +558,8 @@ int p9pdu_finalize(struct p9_client *clnt, struct p9_fcall *pdu)
         pdu->size = size;
 
         trace_9p_protocol_dump(clnt, pdu);
-        P9_DPRINTK(P9_DEBUG_9P, ">>> size=%d type: %d tag: %d\n", pdu->size,
-                                                        pdu->id, pdu->tag);
+        p9_debug(P9_DEBUG_9P, ">>> size=%d type: %d tag: %d\n",
+                 pdu->size, pdu->id, pdu->tag);
 
         return err;
 }
@@ -585,7 +585,7 @@ int p9dirent_read(struct p9_client *clnt, char *buf, int len,
         ret = p9pdu_readf(&fake_pdu, clnt->proto_version, "Qqbs", &dirent->qid,
                           &dirent->d_off, &dirent->d_type, &nameptr);
         if (ret) {
-                P9_DPRINTK(P9_DEBUG_9P, "<<< p9dirent_read failed: %d\n", ret);
+                p9_debug(P9_DEBUG_9P, "<<< p9dirent_read failed: %d\n", ret);
                 trace_9p_protocol_dump(clnt, &fake_pdu);
                 goto out;
         }