[PATCH v4 1/2] sched/clock: interface to allow timestamps early in boot

In Linux printk() can output timestamps next to every line. This is very useful for tracking regressions, and finding places that can be optimized. However, the timestamps are available only later in boot. On smaller machines it is insignificant amount of time, but on larger it can be many

[PATCH v4 1/2] sched/clock: interface to allow timestamps early in boot

In Linux printk() can output timestamps next to every line. This is very useful for tracking regressions, and finding places that can be optimized. However, the timestamps are available only later in boot. On smaller machines it is insignificant amount of time, but on larger it can be many