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9p: Reduce object size with CONFIG_NET_9P_DEBUG

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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>
This commit is contained in:
Joe Perches
2011-11-28 10:40:46 -08:00
committed by Eric Van Hensbergen
parent a0ea787b02
commit 5d3851530d
20 changed files with 452 additions and 439 deletions
Download Patch File Download Diff File Expand all files Collapse all files
net/9p/mod.c
+29 -2
View File
@@ -24,7 +24,11 @@
*
*/
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <linux/module.h>
#include <linux/errno.h>
#include <linux/sched.h>
#include <linux/moduleparam.h>
#include <net/9p/9p.h>
#include <linux/fs.h>
@@ -39,6 +43,29 @@ unsigned int p9_debug_level = 0; /* feature-rific global debug level */
EXPORT_SYMBOL(p9_debug_level);
module_param_named(debug, p9_debug_level, uint, 0);
MODULE_PARM_DESC(debug, "9P debugging level");
void _p9_debug(enum p9_debug_flags level, const char *func,
const char *fmt, ...)
{
struct va_format vaf;
va_list args;
if ((p9_debug_level & level) != level)
return;
va_start(args, fmt);
vaf.fmt = fmt;
vaf.va = &args;
if (level == P9_DEBUG_9P)
pr_notice("(%8.8d) %pV", task_pid_nr(current), &vaf);
else
pr_notice("-- %s (%d): %pV", func, task_pid_nr(current), &vaf);
va_end(args);
}
EXPORT_SYMBOL(_p9_debug);
#endif
/*
@@ -147,7 +174,7 @@ static int __init init_p9(void)
int ret = 0;
p9_error_init();
printk(KERN_INFO "Installing 9P2000 support\n");
pr_info("Installing 9P2000 support\n");
p9_trans_fd_init();
return ret;
@@ -160,7 +187,7 @@ static int __init init_p9(void)
static void __exit exit_p9(void)
{
printk(KERN_INFO "Unloading 9P2000 support\n");
pr_info("Unloading 9P2000 support\n");
p9_trans_fd_exit();
}