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>
diff --git a/net/9p/mod.c b/net/9p/mod.c
index 2664d12..6ab36ae 100644
--- a/net/9p/mod.c
+++ b/net/9p/mod.c
@@ -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 @@
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 @@
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 void __exit exit_p9(void)
{
- printk(KERN_INFO "Unloading 9P2000 support\n");
+ pr_info("Unloading 9P2000 support\n");
p9_trans_fd_exit();
}