diff options
| author | Paul E. McKenney <paulmck@kernel.org> | 2024-08-02 08:46:16 -0700 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2024-08-02 18:37:13 +0200 |
| commit | f33a5d4bd9c2e545857b2cf7481eb721bcab867c (patch) | |
| tree | c71601dabd877364dc4b866183b2ef944b8cb985 /kernel/time | |
| parent | 17915131ae4660658aa779f89e9f444319861561 (diff) | |
clocksource: Fix comments on WATCHDOG_THRESHOLD & WATCHDOG_MAX_SKEW
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
Diffstat (limited to 'kernel/time')
| -rw-r--r-- | kernel/time/clocksource.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/kernel/time/clocksource.c b/kernel/time/clocksource.c index 581cdbb53844..ee0ad5e4d517 100644 --- a/kernel/time/clocksource.c +++ b/kernel/time/clocksource.c @@ -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 |