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| author | Atsushi Nemoto <anemo@mba.ocn.ne.jp> | 2006-06-20 00:19:13 +0900 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2006-06-19 17:39:27 +0100 |
| commit | 1723b4a34af85447684c9696af83929d2c1e8e6b (patch) | |
| tree | ffd16da24a0a6a661d21d1b1f8ef85f0f3b615d9 /arch/mips/Kconfig | |
| parent | b97b36bfd761d83f714eb1b5d6bce519794fa650 (diff) | |
| download | lwn-1723b4a34af85447684c9696af83929d2c1e8e6b.tar.gz lwn-1723b4a34af85447684c9696af83929d2c1e8e6b.zip | |
[MIPS] Make timer interrupt frequency configurable from kconfig.
Make HZ configurable. DECSTATION can select 128/256/1024 HZ, JAZZ can
only select 100 HZ, others can select 100/128/250/256/1000/1024 HZ if
not explicitly specified). Also remove all mach-xxx/param.h files and
update all defconfigs according to current HZ value.
Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/Kconfig')
| -rw-r--r-- | arch/mips/Kconfig | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig index 50274fcacde0..35e038a974c6 100644 --- a/arch/mips/Kconfig +++ b/arch/mips/Kconfig @@ -168,6 +168,9 @@ config MACH_DECSTATION select SYS_SUPPORTS_32BIT_KERNEL select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL select SYS_SUPPORTS_LITTLE_ENDIAN + select SYS_SUPPORTS_128HZ + select SYS_SUPPORTS_256HZ + select SYS_SUPPORTS_1024HZ help This enables support for DEC's MIPS based workstations. For details see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the @@ -265,6 +268,7 @@ config MACH_JAZZ select SYS_HAS_CPU_R4X00 select SYS_SUPPORTS_32BIT_KERNEL select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL + select SYS_SUPPORTS_100HZ help This a family of machines based on the MIPS R4030 chipset which was used by several vendors to build RISC/os and Windows NT workstations. @@ -1707,6 +1711,77 @@ config NR_CPUS This is purely to save memory - each supported CPU adds approximately eight kilobytes to the kernel image. +# +# Timer Interrupt Frequency Configuration +# + +choice + prompt "Timer frequency" + default HZ_250 + help + Allows the configuration of the timer frequency. + + config HZ_48 + bool "48 HZ" if SYS_SUPPORTS_48HZ + + config HZ_100 + bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ + + config HZ_128 + bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ + + config HZ_250 + bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ + + config HZ_256 + bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ + + config HZ_1000 + bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ + + config HZ_1024 + bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ + +endchoice + +config SYS_SUPPORTS_48HZ + bool + +config SYS_SUPPORTS_100HZ + bool + +config SYS_SUPPORTS_128HZ + bool + +config SYS_SUPPORTS_250HZ + bool + +config SYS_SUPPORTS_256HZ + bool + +config SYS_SUPPORTS_1000HZ + bool + +config SYS_SUPPORTS_1024HZ + bool + +config SYS_SUPPORTS_ARBIT_HZ + bool + default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \ + !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \ + !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \ + !SYS_SUPPORTS_1024HZ + +config HZ + int + default 48 if HZ_48 + default 100 if HZ_100 + default 128 if HZ_128 + default 250 if HZ_250 + default 256 if HZ_256 + default 1000 if HZ_1000 + default 1024 if HZ_1024 + source "kernel/Kconfig.preempt" config RTC_DS1742 |