Re: [U-Boot] [PATCH] lib: time: Add microsecond timer

On Tue, Oct 15, 2019 at 10:43:41PM +0200, Marek Vasut wrote:

Add get_timer_us(), which is useful e.g. when we need higher precision timestamps.

Signed-off-by: Marek Vasut marek.vasut+renesas@gmail.com Cc: Tom Rini trini@konsulko.com Cc: Simon Glass sjg@chromium.org

FWIW, I agree with Simon that bootstage [1] can be an awesome tool for profiling and boot time measurements. With a bit of instrumentation and host-side scripting, it allows to produce accurate bootcharts like [2].

[1] https://patchwork.ozlabs.org/patch/1177393/#2281091 [2] https://i.ibb.co/mG6Xc1p/2019-10-16-190251.png