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| author | Yi Li <yi.li@analog.com> | 2009-12-28 10:21:49 (GMT) |
|---|---|---|
| committer | Mike Frysinger <vapier@gentoo.org> | 2010-03-09 05:30:48 (GMT) |
| commit | 0d152c27e336b5fd777da7dd3e814617e7305afd (patch) | |
| tree | 2863b1b2f0fe0676a5928b197c8d1d289ab71777 /arch/blackfin/Kconfig | |
| parent | 682f5dc4ed7cdef1f55e40ee505c4346dfa6fa91 (diff) | |
| download | linux-0d152c27e336b5fd777da7dd3e814617e7305afd.tar.xz | |
Blackfin: SMP: make core timers per-cpu clock events for HRT
SMP systems require per-cpu local clock event devices in order to enable
HRT support. One a BF561, we can use local core timer for this purpose.
Originally, there was one global core-timer clock event device set up for
core A.
To accomplish this feat, we need to split the gptimer0/core timer logic
so that each is a standalone clock event. There is no requirement that
we only have one clock event source anyways. Once we have this, we just
define per-cpu clock event devices for each local core timer.
Signed-off-by: Yi Li <yi.li@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Diffstat (limited to 'arch/blackfin/Kconfig')
| -rw-r--r-- | arch/blackfin/Kconfig | 26 |
1 files changed, 13 insertions, 13 deletions
diff --git a/arch/blackfin/Kconfig b/arch/blackfin/Kconfig index b483639..0bd26db 100644 --- a/arch/blackfin/Kconfig +++ b/arch/blackfin/Kconfig @@ -236,7 +236,7 @@ endchoice config SMP depends on BF561 - select GENERIC_CLOCKEVENTS + select TICKSOURCE_CORETMR bool "Symmetric multi-processing support" ---help--- This enables support for systems with more than one CPU, @@ -610,23 +610,23 @@ config GENERIC_CLOCKEVENTS bool "Generic clock events" default y -choice - prompt "Kernel Tick Source" +menu "Clock event device" depends on GENERIC_CLOCKEVENTS - default TICKSOURCE_CORETMR - config TICKSOURCE_GPTMR0 - bool "Gptimer0 (SCLK domain)" + bool "GPTimer0" + depends on !SMP select BFIN_GPTIMERS config TICKSOURCE_CORETMR - bool "Core timer (CCLK domain)" - -endchoice + bool "Core timer" + default y +endmenu -config CYCLES_CLOCKSOURCE - bool "Use 'CYCLES' as a clocksource" +menu "Clock souce" depends on GENERIC_CLOCKEVENTS +config CYCLES_CLOCKSOURCE + bool "CYCLES" + default y depends on !BFIN_SCRATCH_REG_CYCLES depends on !SMP help @@ -637,10 +637,10 @@ config CYCLES_CLOCKSOURCE writing the registers will most likely crash the kernel. config GPTMR0_CLOCKSOURCE - bool "Use GPTimer0 as a clocksource" + bool "GPTimer0" select BFIN_GPTIMERS - depends on GENERIC_CLOCKEVENTS depends on !TICKSOURCE_GPTMR0 +endmenu config ARCH_USES_GETTIMEOFFSET depends on !GENERIC_CLOCKEVENTS |