On Wed, Sep 29, 2021 at 1:01 PM Will McVicker [off-list ref] wrote:

On Tue, Sep 28, 2021 at 8:42 PM John Stultz [off-list ref] wrote:

quoted

On Tue, Sep 28, 2021 at 4:56 PM Will McVicker [off-list ref] wrote:

quoted

This allows modules to access the value of timekeeping_suspended without
giving them write access to the variable.

It's important to cover "the why" not "the what" in these commit
messages, so you might add a note as to what code will be the user of
this (the samsung/clk-pll.c code changed later in this series).

thanks
-john

Thanks John for the tip. I will try to be better at that in the followup.

I have to remind myself regularly as well. :)  Apologies if my quick
reply above seemed curt (as it does to me re-reading it now). Wasn't
my intent.

For this specific patch, I am adding this new API because the Samsung
PLL driver (drivers/clk/samsung/clk-pll.c) currently is using the
variable 'timekeeping_suspended' to detect timeouts before the
clocksource is initialized or timekeeping itself is suspended. My
patch series aims to modularize the Samsung PLL driver. So to keep the
driver's functionality intact, I need to add this additional API.

Sounds good!

Another small/medium suggestion:  Since you're adding a new interface
for non-core users of timekeeping_suspended, it might be good to
switch the other users as well (seems like just
drivers/clk/ti/clkctrl.c and kernel/sched/clock.c), then also remove
the extern in include/linux/timekeeping.h (so there's one consistent
method to access it)?  I know it's a sort of scope creep, so apologies
for asking, but it would make the series more attractive if it's not
leaving something for others to clean up later.

thanks
-john