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printk: fix some comments

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Fix a few comments that don't accurately describe their corresponding
code.  It also fixes some minor typographical errors.

Signed-off-by: Alex Elder <elder@linaro.org>
Reviewed-by: Petr Mladek <pmladek@suse.cz>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Borislav Petkov <bp@suse.de>
Cc: Jan Kara <jack@suse.cz>
Cc: John Stultz <john.stultz@linaro.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Alex Elder 2014-08-06 16:09:03 -07:00 committed by Linus Torvalds
parent 42a9dc0b3d
commit 0b90fec3b9
1 changed files with 12 additions and 11 deletions
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23
kernel/printk/printk.c
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@ -113,9 +113,9 @@ static int __down_trylock_console_sem(unsigned long ip)
* This is used for debugging the mess that is the VT code by
* keeping track if we have the console semaphore held. It's
* definitely not the perfect debug tool (we don't know if _WE_
* hold it are racing, but it helps tracking those weird code
* path in the console code where we end up in places I want
* locked without the console sempahore held
* hold it and are racing, but it helps tracking those weird code
* paths in the console code where we end up in places I want
* locked without the console sempahore held).
*/
static int console_locked, console_suspended;
@ -146,8 +146,8 @@ static int console_may_schedule;
* the overall length of the record.
*
* The heads to the first and last entry in the buffer, as well as the
* sequence numbers of these both entries are maintained when messages
* are stored..
* sequence numbers of these entries are maintained when messages are
* stored.
*
* If the heads indicate available messages, the length in the header
* tells the start next message. A length == 0 for the next message
@ -345,7 +345,7 @@ static int log_make_free_space(u32 msg_size)
while (log_first_seq < log_next_seq) {
if (logbuf_has_space(msg_size, false))
return 0;
/* drop old messages until we have enough continuous space */
/* drop old messages until we have enough contiguous space */
log_first_idx = log_next(log_first_idx);
log_first_seq++;
}
@ -1517,7 +1517,7 @@ static struct cont {
struct task_struct *owner; /* task of first print*/
u64 ts_nsec; /* time of first print */
u8 level; /* log level of first message */
u8 facility; /* log level of first message */
u8 facility; /* log facility of first message */
enum log_flags flags; /* prefix, newline flags */
bool flushed:1; /* buffer sealed and committed */
} cont;
@ -1922,11 +1922,12 @@ static int __add_preferred_console(char *name, int idx, char *options,
return 0;
}
/*
* Set up a list of consoles. Called from init/main.c
* Set up a console. Called via do_early_param() in init/main.c
* for each "console=" parameter in the boot command line.
*/
static int __init console_setup(char *str)
{
char buf[sizeof(console_cmdline[0].name) + 4]; /* 4 for index */
char buf[sizeof(console_cmdline[0].name) + 4]; /* 4 for "ttyS" */
char *s, *options, *brl_options = NULL;
int idx;
@ -2086,8 +2087,8 @@ EXPORT_SYMBOL(console_lock);
/**
* console_trylock - try to lock the console system for exclusive use.
*
* Tried to acquire a lock which guarantees that the caller has
* exclusive access to the console system and the console_drivers list.
* Try to acquire a lock which guarantees that the caller has exclusive
* access to the console system and the console_drivers list.
*
* returns 1 on success, and 0 on failure to acquire the lock.
*/