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clocksource: Fix comments on WATCHDOG_THRESHOLD & WATCHDOG_MAX_SKEW

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The WATCHDOG_THRESHOLD macro is no longer used to supply a default value
for ->uncertainty_margin, but WATCHDOG_MAX_SKEW now is.

Therefore, update the comments to reflect this change.

Reported-by: Borislav Petkov <bp@alien8.de>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Borislav Petkov (AMD) <bp@alien8.de>
Link: https://lore.kernel.org/all/20240802154618.4149953-3-paulmck@kernel.org
This commit is contained in:
Paul E. McKenney 2024-08-02 08:46:16 -07:00 committed by Thomas Gleixner
parent 17915131ae
commit f33a5d4bd9
1 changed files with 7 additions and 1 deletions
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8
kernel/time/clocksource.c
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@ -113,7 +113,6 @@ static u64 suspend_start;
/*
* Threshold: 0.0312s, when doubled: 0.0625s.
* Also a default for cs->uncertainty_margin when registering clocks.
*/
#define WATCHDOG_THRESHOLD (NSEC_PER_SEC >> 5)
@ -139,6 +138,13 @@ static u64 suspend_start;
#define MAX_SKEW_USEC (125 * WATCHDOG_INTERVAL / HZ)
#endif
/*
* Default for maximum permissible skew when cs->uncertainty_margin is
* not specified, and the lower bound even when cs->uncertainty_margin
* is specified. This is also the default that is used when registering
* clocks with unspecifed cs->uncertainty_margin, so this macro is used
* even in CONFIG_CLOCKSOURCE_WATCHDOG=n kernels.
*/
#define WATCHDOG_MAX_SKEW (MAX_SKEW_USEC * NSEC_PER_USEC)
#ifdef CONFIG_CLOCKSOURCE_WATCHDOG