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printk: add and use LOGLEVEL_<level> defines for KERN_<LEVEL> equivalents 

Use #defines instead of magic values.

Signed-off-by: Joe Perches <joe@perches.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Jason Baron <jbaron@akamai.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Joe Perches 2014-12-10 15:50:15 -08:00 committed by Linus Torvalds
parent f80e696854
commit a39d4a857d
4 changed files with 29 additions and 18 deletions
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2
drivers/usb/storage/debug.c
View File

@ -188,7 +188,7 @@ int usb_stor_dbg(const struct us_data *us, const char *fmt, ...)
va_start(args, fmt);
r = dev_vprintk_emit(7, &us->pusb_dev->dev, fmt, args);
r = dev_vprintk_emit(LOGLEVEL_DEBUG, &us->pusb_dev->dev, fmt, args);
va_end(args);

13
include/linux/kern_levels.h
View File

@ -22,4 +22,17 @@
*/
#define KERN_CONT ""
/* integer equivalents of KERN_<LEVEL> */
#define LOGLEVEL_SCHED -2 /* Deferred messages from sched code
* are set to this special level */
#define LOGLEVEL_DEFAULT -1 /* default (or last) loglevel */
#define LOGLEVEL_EMERG 0 /* system is unusable */
#define LOGLEVEL_ALERT 1 /* action must be taken immediately */
#define LOGLEVEL_CRIT 2 /* critical conditions */
#define LOGLEVEL_ERR 3 /* error conditions */
#define LOGLEVEL_WARNING 4 /* warning conditions */
#define LOGLEVEL_NOTICE 5 /* normal but significant condition */
#define LOGLEVEL_INFO 6 /* informational */
#define LOGLEVEL_DEBUG 7 /* debug-level messages */
#endif

28
kernel/printk/printk.c
View File

@ -62,9 +62,6 @@ int console_printk[4] = {
CONSOLE_LOGLEVEL_DEFAULT, /* default_console_loglevel */
};
/* Deferred messaged from sched code are marked by this special level */
#define SCHED_MESSAGE_LOGLEVEL -2
/*
* Low level drivers may need that to know if they can schedule in
* their unblank() callback or not. So let's export it.
@ -1259,7 +1256,7 @@ static int syslog_print_all(char __user *buf, int size, bool clear)
int do_syslog(int type, char __user *buf, int len, bool from_file)
{
bool clear = false;
static int saved_console_loglevel = -1;
static int saved_console_loglevel = LOGLEVEL_DEFAULT;
int error;
error = check_syslog_permissions(type, from_file);
@ -1316,15 +1313,15 @@ int do_syslog(int type, char __user *buf, int len, bool from_file)
break;
/* Disable logging to console */
case SYSLOG_ACTION_CONSOLE_OFF:
if (saved_console_loglevel == -1)
if (saved_console_loglevel == LOGLEVEL_DEFAULT)
saved_console_loglevel = console_loglevel;
console_loglevel = minimum_console_loglevel;
break;
/* Enable logging to console */
case SYSLOG_ACTION_CONSOLE_ON:
if (saved_console_loglevel != -1) {
if (saved_console_loglevel != LOGLEVEL_DEFAULT) {
console_loglevel = saved_console_loglevel;
saved_console_loglevel = -1;
saved_console_loglevel = LOGLEVEL_DEFAULT;
}
break;
/* Set level of messages printed to console */
@ -1336,7 +1333,7 @@ int do_syslog(int type, char __user *buf, int len, bool from_file)
len = minimum_console_loglevel;
console_loglevel = len;
/* Implicitly re-enable logging to console */
saved_console_loglevel = -1;
saved_console_loglevel = LOGLEVEL_DEFAULT;
error = 0;
break;
/* Number of chars in the log buffer */
@ -1629,8 +1626,8 @@ asmlinkage int vprintk_emit(int facility, int level,
/* cpu currently holding logbuf_lock in this function */
static volatile unsigned int logbuf_cpu = UINT_MAX;
if (level == SCHED_MESSAGE_LOGLEVEL) {
level = -1;
if (level == LOGLEVEL_SCHED) {
level = LOGLEVEL_DEFAULT;
in_sched = true;
}
@ -1695,8 +1692,9 @@ asmlinkage int vprintk_emit(int facility, int level,
const char *end_of_header = printk_skip_level(text);
switch (kern_level) {
case '0' ... '7':
if (level == -1)
if (level == LOGLEVEL_DEFAULT)
level = kern_level - '0';
/* fallthrough */
case 'd': /* KERN_DEFAULT */
lflags |= LOG_PREFIX;
}
@ -1710,7 +1708,7 @@ asmlinkage int vprintk_emit(int facility, int level,
}
}
if (level == -1)
if (level == LOGLEVEL_DEFAULT)
level = default_message_loglevel;
if (dict)
@ -1788,7 +1786,7 @@ EXPORT_SYMBOL(vprintk_emit);
asmlinkage int vprintk(const char *fmt, va_list args)
{
return vprintk_emit(0, -1, NULL, 0, fmt, args);
return vprintk_emit(0, LOGLEVEL_DEFAULT, NULL, 0, fmt, args);
}
EXPORT_SYMBOL(vprintk);
@ -1842,7 +1840,7 @@ asmlinkage __visible int printk(const char *fmt, ...)
}
#endif
va_start(args, fmt);
r = vprintk_emit(0, -1, NULL, 0, fmt, args);
r = vprintk_emit(0, LOGLEVEL_DEFAULT, NULL, 0, fmt, args);
va_end(args);
return r;
@ -2631,7 +2629,7 @@ int printk_deferred(const char *fmt, ...)
preempt_disable();
va_start(args, fmt);
r = vprintk_emit(0, SCHED_MESSAGE_LOGLEVEL, NULL, 0, fmt, args);
r = vprintk_emit(0, LOGLEVEL_SCHED, NULL, 0, fmt, args);
va_end(args);
__this_cpu_or(printk_pending, PRINTK_PENDING_OUTPUT);

4
lib/dynamic_debug.c
View File

@ -576,7 +576,7 @@ void __dynamic_dev_dbg(struct _ddebug *descriptor,
} else {
char buf[PREFIX_SIZE];
dev_printk_emit(7, dev, "%s%s %s: %pV",
dev_printk_emit(LOGLEVEL_DEBUG, dev, "%s%s %s: %pV",
dynamic_emit_prefix(descriptor, buf),
dev_driver_string(dev), dev_name(dev),
&vaf);
@ -605,7 +605,7 @@ void __dynamic_netdev_dbg(struct _ddebug *descriptor,
if (dev && dev->dev.parent) {
char buf[PREFIX_SIZE];
dev_printk_emit(7, dev->dev.parent,
dev_printk_emit(LOGLEVEL_DEBUG, dev->dev.parent,
"%s%s %s %s%s: %pV",
dynamic_emit_prefix(descriptor, buf),
dev_driver_string(dev->dev.parent),