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

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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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28
kernel/printk/printk.c
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@@ -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);