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Commit 1723b4a3 authored by Atsushi Nemoto's avatar Atsushi Nemoto Committed by Ralf Baechle
Browse files

[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: default avatarAtsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: default avatarRalf Baechle <ralf@linux-mips.org>
parent b97b36bf

arch/mips/Kconfig

+75 −0
Original line number Diff line number Diff line
@@ -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

arch/mips/configs/atlas_defconfig

+9 −0
Original line number Diff line number Diff line
@@ -141,6 +141,15 @@ CONFIG_FLATMEM=y 
CONFIG_FLAT_NODE_MEM_MAP=y

# CONFIG_SPARSEMEM_STATIC is not set

CONFIG_SPLIT_PTLOCK_CPUS=4

# CONFIG_HZ_48 is not set

CONFIG_HZ_100=y

# CONFIG_HZ_128 is not set

# CONFIG_HZ_250 is not set

# CONFIG_HZ_256 is not set

# CONFIG_HZ_1000 is not set

# CONFIG_HZ_1024 is not set

CONFIG_SYS_SUPPORTS_ARBIT_HZ=y

CONFIG_HZ=100

CONFIG_PREEMPT_NONE=y

# CONFIG_PREEMPT_VOLUNTARY is not set

# CONFIG_PREEMPT is not set

arch/mips/configs/bigsur_defconfig

+9 −0
Original line number Diff line number Diff line
@@ -143,6 +143,15 @@ CONFIG_FLATMEM=y 
CONFIG_FLAT_NODE_MEM_MAP=y

# CONFIG_SPARSEMEM_STATIC is not set

CONFIG_SPLIT_PTLOCK_CPUS=4

# CONFIG_HZ_48 is not set

# CONFIG_HZ_100 is not set

# CONFIG_HZ_128 is not set

# CONFIG_HZ_250 is not set

# CONFIG_HZ_256 is not set

CONFIG_HZ_1000=y

# CONFIG_HZ_1024 is not set

CONFIG_SYS_SUPPORTS_ARBIT_HZ=y

CONFIG_HZ=1000

CONFIG_SMP=y

CONFIG_NR_CPUS=4

CONFIG_PREEMPT_NONE=y

arch/mips/configs/capcella_defconfig

+9 −0
Original line number Diff line number Diff line
@@ -130,6 +130,15 @@ CONFIG_FLATMEM=y 
CONFIG_FLAT_NODE_MEM_MAP=y

# CONFIG_SPARSEMEM_STATIC is not set

CONFIG_SPLIT_PTLOCK_CPUS=4

# CONFIG_HZ_48 is not set

# CONFIG_HZ_100 is not set

# CONFIG_HZ_128 is not set

# CONFIG_HZ_250 is not set

# CONFIG_HZ_256 is not set

CONFIG_HZ_1000=y

# CONFIG_HZ_1024 is not set

CONFIG_SYS_SUPPORTS_ARBIT_HZ=y

CONFIG_HZ=1000

CONFIG_PREEMPT_NONE=y

# CONFIG_PREEMPT_VOLUNTARY is not set

# CONFIG_PREEMPT is not set

arch/mips/configs/cobalt_defconfig

+9 −0
Original line number Diff line number Diff line
@@ -127,6 +127,15 @@ CONFIG_FLATMEM=y 
CONFIG_FLAT_NODE_MEM_MAP=y

# CONFIG_SPARSEMEM_STATIC is not set

CONFIG_SPLIT_PTLOCK_CPUS=4

# CONFIG_HZ_48 is not set

# CONFIG_HZ_100 is not set

# CONFIG_HZ_128 is not set

# CONFIG_HZ_250 is not set

# CONFIG_HZ_256 is not set

CONFIG_HZ_1000=y

# CONFIG_HZ_1024 is not set

CONFIG_SYS_SUPPORTS_ARBIT_HZ=y

CONFIG_HZ=1000

CONFIG_PREEMPT_NONE=y

# CONFIG_PREEMPT_VOLUNTARY is not set

# CONFIG_PREEMPT is not set