On Wed, Sep 29, 2021 at 1:01 PM Will McVicker <willmcvicker@xxxxxxxxxx> wrote: > On Tue, Sep 28, 2021 at 8:42 PM John Stultz <john.stultz@xxxxxxxxxx> wrote: > > On Tue, Sep 28, 2021 at 4:56 PM Will McVicker <willmcvicker@xxxxxxxxxx> wrote: > > > > > > 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
