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Diffstat (limited to 'kernel/printk.c')
-rw-r--r--kernel/printk.c78
1 files changed, 42 insertions, 36 deletions
diff --git a/kernel/printk.c b/kernel/printk.c
index 4b8f0f9230a..3cb9708209b 100644
--- a/kernel/printk.c
+++ b/kernel/printk.c
@@ -10,7 +10,7 @@
* elsewhere, in preparation for a serial line console (someday).
* Ted Ts'o, 2/11/93.
* Modified for sysctl support, 1/8/97, Chris Horn.
- * Fixed SMP synchronization, 08/08/99, Manfred Spraul
+ * Fixed SMP synchronization, 08/08/99, Manfred Spraul
* manfreds@colorfullife.com
* Rewrote bits to get rid of console_lock
* 01Mar01 Andrew Morton <andrewm@uow.edu.au>
@@ -148,7 +148,7 @@ static int __init console_setup(char *str)
if (!strcmp(str, "ttyb"))
strcpy(name, "ttyS1");
#endif
- for(s = name; *s; s++)
+ for (s = name; *s; s++)
if ((*s >= '0' && *s <= '9') || *s == ',')
break;
idx = simple_strtoul(s, NULL, 10);
@@ -169,11 +169,11 @@ static int __init log_buf_len_setup(char *str)
size = roundup_pow_of_two(size);
if (size > log_buf_len) {
unsigned long start, dest_idx, offset;
- char * new_log_buf;
+ char *new_log_buf;
new_log_buf = alloc_bootmem(size);
if (!new_log_buf) {
- printk("log_buf_len: allocation failed\n");
+ printk(KERN_WARNING "log_buf_len: allocation failed\n");
goto out;
}
@@ -193,10 +193,9 @@ static int __init log_buf_len_setup(char *str)
log_end -= offset;
spin_unlock_irqrestore(&logbuf_lock, flags);
- printk("log_buf_len: %d\n", log_buf_len);
+ printk(KERN_NOTICE "log_buf_len: %d\n", log_buf_len);
}
out:
-
return 1;
}
@@ -217,7 +216,7 @@ __setup("log_buf_len=", log_buf_len_setup);
* 9 -- Return number of unread characters in the log buffer
* 10 -- Return size of the log buffer
*/
-int do_syslog(int type, char __user * buf, int len)
+int do_syslog(int type, char __user *buf, int len)
{
unsigned long i, j, limit, count;
int do_clear = 0;
@@ -244,7 +243,8 @@ int do_syslog(int type, char __user * buf, int len)
error = -EFAULT;
goto out;
}
- error = wait_event_interruptible(log_wait, (log_start - log_end));
+ error = wait_event_interruptible(log_wait,
+ (log_start - log_end));
if (error)
goto out;
i = 0;
@@ -264,7 +264,7 @@ int do_syslog(int type, char __user * buf, int len)
error = i;
break;
case 4: /* Read/clear last kernel messages */
- do_clear = 1;
+ do_clear = 1;
/* FALL THRU */
case 3: /* Read last kernel messages */
error = -EINVAL;
@@ -288,11 +288,11 @@ int do_syslog(int type, char __user * buf, int len)
limit = log_end;
/*
* __put_user() could sleep, and while we sleep
- * printk() could overwrite the messages
+ * printk() could overwrite the messages
* we try to copy to user space. Therefore
* the messages are copied in reverse. <manfreds>
*/
- for(i = 0; i < count && !error; i++) {
+ for (i = 0; i < count && !error; i++) {
j = limit-1-i;
if (j + log_buf_len < log_end)
break;
@@ -306,10 +306,10 @@ int do_syslog(int type, char __user * buf, int len)
if (error)
break;
error = i;
- if(i != count) {
+ if (i != count) {
int offset = count-error;
/* buffer overflow during copy, correct user buffer. */
- for(i=0;i<error;i++) {
+ for (i = 0; i < error; i++) {
if (__get_user(c,&buf[i+offset]) ||
__put_user(c,&buf[i])) {
error = -EFAULT;
@@ -351,7 +351,7 @@ out:
return error;
}
-asmlinkage long sys_syslog(int type, char __user * buf, int len)
+asmlinkage long sys_syslog(int type, char __user *buf, int len)
{
return do_syslog(type, buf, len);
}
@@ -404,21 +404,19 @@ static void call_console_drivers(unsigned long start, unsigned long end)
cur_index = start;
start_print = start;
while (cur_index != end) {
- if ( msg_level < 0 &&
- ((end - cur_index) > 2) &&
- LOG_BUF(cur_index + 0) == '<' &&
- LOG_BUF(cur_index + 1) >= '0' &&
- LOG_BUF(cur_index + 1) <= '7' &&
- LOG_BUF(cur_index + 2) == '>')
- {
+ if (msg_level < 0 && ((end - cur_index) > 2) &&
+ LOG_BUF(cur_index + 0) == '<' &&
+ LOG_BUF(cur_index + 1) >= '0' &&
+ LOG_BUF(cur_index + 1) <= '7' &&
+ LOG_BUF(cur_index + 2) == '>') {
msg_level = LOG_BUF(cur_index + 1) - '0';
cur_index += 3;
start_print = cur_index;
}
while (cur_index != end) {
char c = LOG_BUF(cur_index);
- cur_index++;
+ cur_index++;
if (c == '\n') {
if (msg_level < 0) {
/*
@@ -461,7 +459,7 @@ static void zap_locks(void)
static unsigned long oops_timestamp;
if (time_after_eq(jiffies, oops_timestamp) &&
- !time_after(jiffies, oops_timestamp + 30*HZ))
+ !time_after(jiffies, oops_timestamp + 30 * HZ))
return;
oops_timestamp = jiffies;
@@ -495,7 +493,7 @@ __attribute__((weak)) unsigned long long printk_clock(void)
/*
* This is printk. It can be called from any context. We want it to work.
- *
+ *
* We try to grab the console_sem. If we succeed, it's easy - we log the output and
* call the console drivers. If we fail to get the semaphore we place the output
* into the log buffer and return. The current holder of the console_sem will
@@ -639,13 +637,19 @@ EXPORT_SYMBOL(vprintk);
#else
-asmlinkage long sys_syslog(int type, char __user * buf, int len)
+asmlinkage long sys_syslog(int type, char __user *buf, int len)
{
return 0;
}
-int do_syslog(int type, char __user * buf, int len) { return 0; }
-static void call_console_drivers(unsigned long start, unsigned long end) {}
+int do_syslog(int type, char __user *buf, int len)
+{
+ return 0;
+}
+
+static void call_console_drivers(unsigned long start, unsigned long end)
+{
+}
#endif
@@ -851,9 +855,9 @@ EXPORT_SYMBOL(console_start);
* print any messages that were printed by the kernel before the
* console driver was initialized.
*/
-void register_console(struct console * console)
+void register_console(struct console *console)
{
- int i;
+ int i;
unsigned long flags;
if (preferred_console < 0)
@@ -878,7 +882,8 @@ void register_console(struct console * console)
* See if this console matches one we selected on
* the command line.
*/
- for(i = 0; i < MAX_CMDLINECONSOLES && console_cmdline[i].name[0]; i++) {
+ for (i = 0; i < MAX_CMDLINECONSOLES && console_cmdline[i].name[0];
+ i++) {
if (strcmp(console_cmdline[i].name, console->name) != 0)
continue;
if (console->index >= 0 &&
@@ -933,9 +938,9 @@ void register_console(struct console * console)
}
EXPORT_SYMBOL(register_console);
-int unregister_console(struct console * console)
+int unregister_console(struct console *console)
{
- struct console *a,*b;
+ struct console *a, *b;
int res = 1;
acquire_console_sem();
@@ -949,10 +954,10 @@ int unregister_console(struct console * console)
b->next = a->next;
res = 0;
break;
- }
+ }
}
}
-
+
/* If last console is removed, we re-enable picking the first
* one that gets registered. Without that, pmac early boot console
* would prevent fbcon from taking over.
@@ -994,7 +999,7 @@ void tty_write_message(struct tty_struct *tty, char *msg)
int __printk_ratelimit(int ratelimit_jiffies, int ratelimit_burst)
{
static DEFINE_SPINLOCK(ratelimit_lock);
- static unsigned long toks = 10*5*HZ;
+ static unsigned long toks = 10 * 5 * HZ;
static unsigned long last_msg;
static int missed;
unsigned long flags;
@@ -1007,6 +1012,7 @@ int __printk_ratelimit(int ratelimit_jiffies, int ratelimit_burst)
toks = ratelimit_burst * ratelimit_jiffies;
if (toks >= ratelimit_jiffies) {
int lost = missed;
+
missed = 0;
toks -= ratelimit_jiffies;
spin_unlock_irqrestore(&ratelimit_lock, flags);
@@ -1021,7 +1027,7 @@ int __printk_ratelimit(int ratelimit_jiffies, int ratelimit_burst)
EXPORT_SYMBOL(__printk_ratelimit);
/* minimum time in jiffies between messages */
-int printk_ratelimit_jiffies = 5*HZ;
+int printk_ratelimit_jiffies = 5 * HZ;
/* number of messages we send before ratelimiting */
int printk_ratelimit_burst = 10;
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-04 03:30:19 +0000