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| author | Thomas Gleixner <tglx@linutronix.de> | 2024-10-31 13:04:07 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-12-14 20:04:16 +0100 |
| commit | 7b7a9175c63bac41b07a314f052f0716c728f31f (patch) | |
| tree | 8b641adce395d15bdbe594091cf3fa0bf2e7ec28 /lib | |
| parent | a8c03c6dc1bd9433e4f3db17c30cbc560b4b6625 (diff) | |
| download | linux-7b7a9175c63bac41b07a314f052f0716c728f31f.tar.gz linux-7b7a9175c63bac41b07a314f052f0716c728f31f.tar.bz2 linux-7b7a9175c63bac41b07a314f052f0716c728f31f.zip | |
timekeeping: Remove CONFIG_DEBUG_TIMEKEEPING
commit d44d26987bb3df6d76556827097fc9ce17565cb8 upstream.
Since 135225a363ae timekeeping_cycles_to_ns() handles large offsets which
would lead to 64bit multiplication overflows correctly. It's also protected
against negative motion of the clocksource unconditionally, which was
exclusive to x86 before.
timekeeping_advance() handles large offsets already correctly.
That means the value of CONFIG_DEBUG_TIMEKEEPING which analyzed these cases
is very close to zero. Remove all of it.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: John Stultz <jstultz@google.com>
Link: https://lore.kernel.org/all/20241031120328.536010148@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/Kconfig.debug | 13 |
1 files changed, 0 insertions, 13 deletions
diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug index 7312ae7c3cc5..3f9c238bb58e 100644 --- a/lib/Kconfig.debug +++ b/lib/Kconfig.debug @@ -1328,19 +1328,6 @@ config SCHEDSTATS endmenu -config DEBUG_TIMEKEEPING - bool "Enable extra timekeeping sanity checking" - help - This option will enable additional timekeeping sanity checks - which may be helpful when diagnosing issues where timekeeping - problems are suspected. - - This may include checks in the timekeeping hotpaths, so this - option may have a (very small) performance impact to some - workloads. - - If unsure, say N. - config DEBUG_PREEMPT bool "Debug preemptible kernel" depends on DEBUG_KERNEL && PREEMPTION && TRACE_IRQFLAGS_SUPPORT |