printk_timed_ratelimit
if (printk_timed_ratelimit(&j, 1000) || rcode != last_rcode) {
if (printk_timed_ratelimit(&j, 500))
if (printk_timed_ratelimit(&j, 500))
if (printk_timed_ratelimit(&j, 500))
if (printk_timed_ratelimit(&abort_warn_time, 60*HZ))
extern bool printk_timed_ratelimit(unsigned long *caller_jiffies,
EXPORT_SYMBOL(printk_timed_ratelimit);