mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-09-06 10:57:46 +00:00
35de589cb8
The stop/shutdown op should not use decrementer_set_next_event because that sets decrementers_next_tb to now + decrementer_max, which means a decrementer interrupt that occurs after that time will call the clockevent event handler unexpectedly. Set next_tb to ~0 here to prevent any clock event call. Init all clockevents to stopped. Then the decrementer clockevent device always has event_handler set and applicable because we know the clock event device was not stopped. So make this call unconditional to show that it is always called. next_tb need not be set to ~0 before the event handler is called because it will stop the clockevent device if there is no other timer. Finally, the timer broadcast interrupt should not modify next_tb because it is not involved with the local decrementer clockevent on this CPU. This doesn't fix a known bug, just tidies the code. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20220124143930.3923442-3-npiggin@gmail.com |
||
---|---|---|
.. | ||
alpha | ||
arc | ||
arm | ||
arm64 | ||
csky | ||
h8300 | ||
hexagon | ||
ia64 | ||
m68k | ||
microblaze | ||
mips | ||
nds32 | ||
nios2 | ||
openrisc | ||
parisc | ||
powerpc | ||
riscv | ||
s390 | ||
sh | ||
sparc | ||
um | ||
x86 | ||
xtensa | ||
.gitignore | ||
Kconfig |