Langwell APB Timer Support
modulename: apb_timer.ko
configname: CONFIG_APB_TIMER
Linux Kernel Configuration
└─>Processor type and features
└─>Langwell APB Timer Support
In linux kernel since version 2.6.34 (release Date: 2010-05-16)
APB timer is the replacement for 8254, HPET on X86 MID platforms.
The APBT provides a stable time base on SMP
systems, unlike the TSC, but it is more expensive to access,
as it is off-chip. APB timers are always running regardless of CPU
C states, they are used as per CPU clockevent device when possible.
The APBT provides a stable time base on SMP
systems, unlike the TSC, but it is more expensive to access,
as it is off-chip. APB timers are always running regardless of CPU
C states, they are used as per CPU clockevent device when possible.
source code:
depends
or CONFIG_SFI || CONFIG_X86_INTEL_MID