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Thomas Gleixner c163e40af9 timekeeping: Always check for negative motion 
clocksource_delta() has two variants. One with a check for negative motion,
which is only selected by x86. This is a historic leftover as this function
was previously used in the time getter hot paths.

Since 135225a363 timekeeping_cycles_to_ns() has unconditional protection
against this as a by-product of the protection against 64bit math overflow.

clocksource_delta() is only used in the clocksource watchdog and in
timekeeping_advance(). The extra conditional there is not hurting anyone.

Remove the config option and unconditionally prevent negative motion of the
readout.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: John Stultz <jstultz@google.com>
Link: https://lore.kernel.org/all/20241031120328.599430157@linutronix.de
2024-11-02 10:14:31 +01:00
..
alpha asm-generic updates for 6.12 2024-09-26 11:54:40 -07:00
arc Kbuild updates for v6.12 2024-09-24 13:02:06 -07:00
arm ARM: smp_twd: Remove clockevents shutdown call on offlining 2024-10-31 10:41:42 +01:00
arm64 x86: 2024-09-28 09:20:14 -07:00
csky mm: make arch_get_unmapped_area() take vm_flags by default 2024-09-09 16:39:13 -07:00
hexagon hexagon: vdso: Fix build failure 2024-09-23 08:17:50 -07:00
loongarch x86: 2024-09-28 09:20:14 -07:00
m68k m68knommu: updates and fixes for v6.12 2024-09-24 10:48:44 -07:00
microblaze microblaze: don't treat zero reserved memory regions as error 2024-08-25 15:26:30 -07:00
mips x86: 2024-09-28 09:20:14 -07:00
nios2 mm: remove legacy install_special_mapping() code 2024-09-01 20:26:13 -07:00
openrisc openrisc: convert to generic syscall table 2024-07-10 14:23:38 +02:00
parisc [tree-wide] finally take no_llseek out 2024-09-27 08:18:43 -07:00
powerpc powerpc/rtas: Use fsleep() to minimize additional sleep duration 2024-10-16 00:36:48 +02:00
riscv timekeeping: Remove CONFIG_DEBUG_TIMEKEEPING 2024-11-02 10:14:31 +01:00
s390 x86: 2024-09-28 09:20:14 -07:00
sh sh updates for v6.12 2024-09-27 10:10:21 -07:00
sparc This includes the following changes related to sparc for v6.12: 2024-09-25 11:21:06 -07:00
um This pull request contains the following changes for UML: 2024-09-27 12:48:48 -07:00
x86 timekeeping: Always check for negative motion 2024-11-02 10:14:31 +01:00
xtensa ALong with the usual shower of singleton patches, notable patch series in 2024-09-21 07:29:05 -07:00
.gitignore
Kconfig Rust changes for v6.12 2024-09-25 10:25:40 -07:00