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| author | David Brownell <david-b@pacbell.net> | 2008-02-14 11:24:02 -0800 |
|---|---|---|
| committer | Haavard Skinnemoen <haavard.skinnemoen@atmel.com> | 2008-04-19 20:40:08 -0400 |
| commit | e723ff666a5da8f7fda4e36ebfeafac2175a5c6e (patch) | |
| tree | 53d2b1a0190795977ddccbda2085598d7ea14e43 /arch/avr32/Kconfig | |
| parent | 7e59128f31e0c57d52e86d57730d4c9281494dda (diff) | |
| download | lwn-e723ff666a5da8f7fda4e36ebfeafac2175a5c6e.tar.gz lwn-e723ff666a5da8f7fda4e36ebfeafac2175a5c6e.zip | |
avr32: Generic clockevents support
This combines three patches from David Brownell:
* avr32: tclib support
* avr32: simplify clocksources
* avr32: Turn count/compare into a oneshot clockevent device
Register both TC blocks (instead of just the first one) so that
the AT32/AT91 tclib code will pick them up (instead of just the
avr32-only PIT-style clocksource).
Rename the first one and its resources appropriately.
More cleanups to the cycle counter clocksource code
- Disable all the weak symbol magic; remove the AVR32-only TCB-based
clocksource code (source and header).
- Mark the __init code properly.
- Don't forget to report IRQF_TIMER.
- Make the system work properly with this clocksource, by preventing
use of the CPU "idle" sleep state in the idle loop when it's used.
Package the avr32 count/compare timekeeping support as a oneshot
clockevent device, so it supports NO_HZ and high res timers.
This means it also supports plugging in other clockevent devices
and clocksources.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
Diffstat (limited to 'arch/avr32/Kconfig')
| -rw-r--r-- | arch/avr32/Kconfig | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/avr32/Kconfig b/arch/avr32/Kconfig index 28e0caf4156c..09ad7995080c 100644 --- a/arch/avr32/Kconfig +++ b/arch/avr32/Kconfig @@ -47,6 +47,9 @@ config RWSEM_GENERIC_SPINLOCK config GENERIC_TIME def_bool y +config GENERIC_CLOCKEVENTS + def_bool y + config RWSEM_XCHGADD_ALGORITHM def_bool n @@ -70,6 +73,8 @@ source "init/Kconfig" menu "System Type and features" +source "kernel/time/Kconfig" + config SUBARCH_AVR32B bool config MMU |