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

On 10/16/19 7:11 PM, Eugeniu Rosca wrote:

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.

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

I don't need that though, I really only need to know how long the code spent between two points in code.