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, 6 insertions, 7 deletions

diff --git a/fs/9p/vfs_addr.c b/fs/9p/vfs_addr.c
index 2524e4cbb8ea..0ad61c6a65a5 100644
--- a/fs/9p/vfs_addr.c
+++ b/fs/9p/vfs_addr.c
@@ -56,7 +56,7 @@ static int v9fs_fid_readpage(struct p9_fid *fid, struct page *page)
         struct inode *inode;
 
         inode = page->mapping->host;
-        P9_DPRINTK(P9_DEBUG_VFS, "\n");
+        p9_debug(P9_DEBUG_VFS, "\n");
 
         BUG_ON(!PageLocked(page));
 
@@ -116,14 +116,14 @@ static int v9fs_vfs_readpages(struct file *filp, struct address_space *mapping,
         struct inode *inode;
 
         inode = mapping->host;
-        P9_DPRINTK(P9_DEBUG_VFS, "inode: %p file: %p\n", inode, filp);
+        p9_debug(P9_DEBUG_VFS, "inode: %p file: %p\n", inode, filp);
 
         ret = v9fs_readpages_from_fscache(inode, mapping, pages, &nr_pages);
         if (ret == 0)
                 return ret;
 
         ret = read_cache_pages(mapping, pages, (void *)v9fs_vfs_readpage, filp);
-        P9_DPRINTK(P9_DEBUG_VFS, "  = %d\n", ret);
+        p9_debug(P9_DEBUG_VFS, "  = %d\n", ret);
         return ret;
 }
 
@@ -263,10 +263,9 @@ v9fs_direct_IO(int rw, struct kiocb *iocb, const struct iovec *iov,
          * Now that we do caching with cache mode enabled, We need
          * to support direct IO
          */
-        P9_DPRINTK(P9_DEBUG_VFS, "v9fs_direct_IO: v9fs_direct_IO (%s) "
-                        "off/no(%lld/%lu) EINVAL\n",
-                        iocb->ki_filp->f_path.dentry->d_name.name,
-                        (long long) pos, nr_segs);
+        p9_debug(P9_DEBUG_VFS, "v9fs_direct_IO: v9fs_direct_IO (%s) off/no(%lld/%lu) EINVAL\n",
+                 iocb->ki_filp->f_path.dentry->d_name.name,
+                 (long long)pos, nr_segs);
 
         return -EINVAL;
 }