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SubjectRe: [RFC] printk: add relative printk timing support
On Thu, May 17, 2012 at 5:02 PM, Sasha Levin <> wrote:
> This patch adds support for relative timestamps in printk output.

>  static size_t print_prefix(const struct log *msg, bool syslog, char *buf)

> +       } else if (printk_time == 2 || printk_time == 3) {
> +               static unsigned long long last_print;

We can have multiple concurrent users of the relative time calculation, right?

I guess the last_print needs to be localized to every possible user
and concurrent instance: syslog(dmesg), syslog(/proc/kmsg), console
output, to not race against each other?

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