Messages in this thread | | | From | Thomas Gleixner <> | Subject | Re: [GIT PULL clocksource] Clocksource watchdog commits for v5.15 | Date | Thu, 12 Aug 2021 15:46:42 +0200 |
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On Wed, Aug 11 2021 at 17:01, Paul E. McKenney wrote: > This pull request contains a single change that prevents clocksource > watchdog testing on systems with HZ < 100, thus preventing the integer > underflow that can occur on leisurely HZed systems. This has been > posted to LKML: > > https://lore.kernel.org/lkml/20210721212755.GA2066078@paulmck-ThinkPad-P17-Gen-1/
So with HZ < 100 .mult overflows, but why not simply adjusting the mult, shift value to be
.mult = TICK_NSEC, .shift = 0,
which is effectively the same as
.mult = TICK_NSEC << 8, .shift = 8,
Hmm?
Thanks,
tglx
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