"sys_clock_hw_cycles_per_tick" for hpet timer?

[zephyrbot]

Reported by Sharron LIU:

I'm doing some testing on unified kernel, where "sys_clock_hw_cycles_per_tick" is not defined in the "include/kernel.h". Thus I tried to compute this value by doing:
#define CYCLES_PER_TICK (CONFIG_SYS_CLOCK_HW_CYCLES_PER_SEC/
CONFIG_SYS_CLOCK_TICKS_PER_SEC)
This comes out "250000", but the "sys_clock_hw_cycles_per_tick" used in qemu_x86 is actually "1000000". Is this as expected?

I noticed in the default configure of qemu_x86
CONFIG_SYS_CLOCK_HW_CYCLES_PER_SEC=25000000
CONFIG_SYS_CLOCK_TICKS_PER_SEC=100
and I would expect "sys_clock_hw_cycles_per_tick = 250000".

(Imported from Jira ZEP-1071)

[zephyrbot]

by Benjamin Walsh:

The value in the kconfig option is overridden at runtime by the HPET, since it queries its hardware to get the real value.

[zephyrbot]

by Sharron LIU:

It's clear. Agree to close.

[zephyrbot]

by Mark Linkmeyer:

Fixing incorrect priority