On 07/12/2015 11:47 PM, Joe Perches wrote:
> On Sun, 2015-07-12 at 22:49 -0400, Peter Hurley wrote:
>> Introduce tty_debug() macro to output uniform debug information for
>> tty core debug messages (function name and tty name).
> []
>> diff --git a/drivers/tty/tty_io.c b/drivers/tty/tty_io.c
> []
>> @@ -768,7 +768,7 @@ static void do_tty_hangup(struct work_struct *work)
>> void tty_hangup(struct tty_struct *tty)
>> {
>> #ifdef TTY_DEBUG_HANGUP
>> - printk(KERN_DEBUG "%s hangup...\n", tty_name(tty));
>> + tty_debug(tty, "\n");
>
> Why drop the "hangup..." ?
tty_debug() prints the function name; in this case, tty_hangup().
>> diff --git a/include/linux/tty.h b/include/linux/tty.h
> []
>> +#define tty_debug(tty, f, args...) \
>> + do { \
>> + printk(KERN_DEBUG "%s: %s: " f, __func__, \
>> + tty_name(tty), ##args); \
>> + } while (0)
>
> Single statement macros don't need do {} while (0)
Ah, yep. Old hold-over from when tty_name() needed a temp buffer.
> #define fmt, ...
> using fmt, ##__VA_ARGS__
>
> is more common.
Ok.
Regards,
Peter Hurley
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