Re: [PATCH v2] ACPI: Replace msleep() with usleep_range() in acpi_os_sleep().

[Len Brown]

On Wed, Nov 20, 2024 at 2:42 PM Rafael J. Wysocki <rafael@xxxxxxxxxx> wrote:

> I generally think that if you are sleeping relatively long, you may as
> well sacrifice some precision for avoiding system stress so to speak,
> so I've been considering something like flat 50 us for sleeps between
> 1 and 5 ms and then 1% of the sleep duration for longer sleeps.

What is the maximum rate of acpi_os_sleep() invocations?

Assuming the reasoning for user-space timer-slack is sound @ fixed 50 usec,
what logic supports acpi_os_sleep paying more timer slack delay than user space?

What measurements can demonstrate the benefit of this proposed additional delay?