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Update printk.c #96

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Update printk.c #96

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9280b98
Update printk.c
invicnaper May 28, 2014
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invicnaper May 29, 2014
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invicnaper May 30, 2014
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Update printk.c
invicnaper May 30, 2014
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invicnaper Jun 1, 2014
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invicnaper Jun 1, 2014
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invicnaper Jun 1, 2014
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invicnaper Jun 5, 2014
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41 changes: 40 additions & 1 deletion kernel/printk/printk.c
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Original file line number Diff line number Diff line change
Expand Up @@ -2457,7 +2457,46 @@ static void wake_up_klogd_work_func(struct irq_work *irq_work)
if (pending & PRINTK_PENDING_WAKEUP)
wake_up_interruptible(&log_wait);
}

int type_printk(int type, const char *fmt, ...)
{
unsigned long flags;
va_list args;
char *buf;
const char *all_fmt;
int r;
ocal_irq_save(flags);
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ocal_irq_save(flags); --> should be "local_irq_save(flags);"?
Is it a spelling wrong?

buf = __get_cpu_var(printk_sched_buf);
switch(type){
case 0:
/* normal type , we will print an output like the one that printk print */
va_start(args, fmt);
r = vsnprintf(buf, PRINTK_BUF_SIZE, fmt, args);
break;
case 1:
/* error type , we we will print the fmt and adding [error] */
sprintf(all_fmt, "[Error] : %s", fmt);
va_start(args, all_fmt)
r = vsnprintf(buf, PRINTK_BUF_SIZE, all_fmt, args);
break;
case 2:
/* Action type , we we will print the fmt and adding [action] */
sprintf(all_fmt, "[Action] : %s", fmt);
va_start(args, all_fmt)
r = vsnprintf(buf, PRINTK_BUF_SIZE, all_fmt, args);
break;
default:
/* no type , printing normaly */
va_start(args, fmt);
r = vsnprintf(buf, PRINTK_BUF_SIZE, fmt, args);
break;
}
va_end(args);
__this_cpu_or(printk_pending, PRINTK_PENDING_SCHED);
irq_work_queue(&__get_cpu_var(wake_up_klogd_work));
local_irq_restore(flags);
return r;
}
EXPORT_SYMBOL(type_printk);
static DEFINE_PER_CPU(struct irq_work, wake_up_klogd_work) = {
.func = wake_up_klogd_work_func,
.flags = IRQ_WORK_LAZY,
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