lisa/android_kernel_xiaomi_sm8350
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity
2be508d847
android_kernel_xiaomi_sm8350/arch/cris/Kconfig
Matt Helsley dc52ddc0e6 container freezer: implement freezer cgroup subsystem 
This patch implements a new freezer subsystem in the control groups
framework.  It provides a way to stop and resume execution of all tasks in
a cgroup by writing in the cgroup filesystem.

The freezer subsystem in the container filesystem defines a file named
freezer.state.  Writing "FROZEN" to the state file will freeze all tasks
in the cgroup.  Subsequently writing "RUNNING" will unfreeze the tasks in
the cgroup.  Reading will return the current state.

* Examples of usage :

   # mkdir /containers/freezer
   # mount -t cgroup -ofreezer freezer  /containers
   # mkdir /containers/0
   # echo $some_pid > /containers/0/tasks

to get status of the freezer subsystem :

   # cat /containers/0/freezer.state
   RUNNING

to freeze all tasks in the container :

   # echo FROZEN > /containers/0/freezer.state
   # cat /containers/0/freezer.state
   FREEZING
   # cat /containers/0/freezer.state
   FROZEN

to unfreeze all tasks in the container :

   # echo RUNNING > /containers/0/freezer.state
   # cat /containers/0/freezer.state
   RUNNING

This is the basic mechanism which should do the right thing for user space
task in a simple scenario.

It's important to note that freezing can be incomplete.  In that case we
return EBUSY.  This means that some tasks in the cgroup are busy doing
something that prevents us from completely freezing the cgroup at this
time.  After EBUSY, the cgroup will remain partially frozen -- reflected
by freezer.state reporting "FREEZING" when read.  The state will remain
"FREEZING" until one of these things happens:

	1) Userspace cancels the freezing operation by writing "RUNNING" to
		the freezer.state file
	2) Userspace retries the freezing operation by writing "FROZEN" to
		the freezer.state file (writing "FREEZING" is not legal
		and returns EIO)
	3) The tasks that blocked the cgroup from entering the "FROZEN"
		state disappear from the cgroup's set of tasks.

[akpm@linux-foundation.org: coding-style fixes]
[akpm@linux-foundation.org: export thaw_process]
Signed-off-by: Cedric Le Goater <clg@fr.ibm.com>
Signed-off-by: Matt Helsley <matthltc@us.ibm.com>
Acked-by: Serge E. Hallyn <serue@us.ibm.com>
Tested-by: Matt Helsley <matthltc@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-10-20 08:52:34 -07:00

689 lines
16 KiB
Plaintext
Raw Blame History

#
# For a description of the syntax of this configuration file,
# see the Configure script.
#
mainmenu "Linux/CRIS Kernel Configuration"
config MMU
bool
default y
config ZONE_DMA
bool
default y
config RWSEM_GENERIC_SPINLOCK
bool
default y
config RWSEM_XCHGADD_ALGORITHM
bool
config GENERIC_IOMAP
bool
default y
config ARCH_HAS_ILOG2_U32
bool
default n
config ARCH_HAS_ILOG2_U64
bool
default n
config GENERIC_FIND_NEXT_BIT
bool
default y
config GENERIC_HWEIGHT
bool
default y
config GENERIC_CALIBRATE_DELAY
bool
default y
config NO_IOPORT
def_bool y
config FORCE_MAX_ZONEORDER
int
default 6
config CRIS
bool
default y
select HAVE_IDE
config HZ
int
default 100
source "init/Kconfig"
source "kernel/Kconfig.freezer"
menu "General setup"
source "fs/Kconfig.binfmt"
config GENERIC_HARDIRQS
bool
default y
config ETRAX_CMDLINE
string "Kernel command line"
default "root=/dev/mtdblock3"
help
Pass additional commands to the kernel.
config ETRAX_WATCHDOG
bool "Enable ETRAX watchdog"
help
Enable the built-in watchdog timer support on ETRAX based embedded
network computers.
config ETRAX_WATCHDOG_NICE_DOGGY
bool "Disable watchdog during Oops printouts"
depends on ETRAX_WATCHDOG
help
By enabling this you make sure that the watchdog does not bite while
printing oopses. Recommended for development systems but not for
production releases.
config ETRAX_FAST_TIMER
bool "Enable ETRAX fast timer API"
help
This options enables the API to a fast timer implementation using
timer1 to get sub jiffie resolution timers (primarily one-shot
timers).
This is needed if CONFIG_ETRAX_SERIAL_FAST_TIMER is enabled.
config ETRAX_KMALLOCED_MODULES
bool "Enable module allocation with kmalloc"
help
Enable module allocation with kmalloc instead of vmalloc.
config OOM_REBOOT
bool "Enable reboot at out of memory"
source "kernel/Kconfig.preempt"
source mm/Kconfig
endmenu
menu "Hardware setup"
choice
prompt "Processor type"
default ETRAX100LX
config ETRAX100LX
bool "ETRAX-100LX-v1"
help
Support version 1 of the ETRAX 100LX.
config ETRAX100LX_V2
bool "ETRAX-100LX-v2"
help
Support version 2 of the ETRAX 100LX.
config SVINTO_SIM
bool "ETRAX-100LX-for-xsim-simulator"
help
Support the xsim ETRAX Simulator.
config ETRAXFS
bool "ETRAX-FS-V32"
help
Support CRIS V32.
config CRIS_MACH_ARTPEC3
bool "ARTPEC-3"
help
Support Axis ARTPEC-3.
endchoice
config ETRAX_VCS_SIM
bool "VCS Simulator"
help
Setup hardware to be run in the VCS simulator.
config ETRAX_ARCH_V10
bool
default y if ETRAX100LX || ETRAX100LX_V2
default n if !(ETRAX100LX || ETRAX100LX_V2)
config ETRAX_ARCH_V32
bool
default y if (ETRAXFS || CRIS_MACH_ARTPEC3)
default n if !(ETRAXFS || CRIS_MACH_ARTPEC3)
config ETRAX_DRAM_SIZE
int "DRAM size (dec, in MB)"
default "8"
help
Size of DRAM (decimal in MB) typically 2, 8 or 16.
config ETRAX_VMEM_SIZE
int "Video memory size (dec, in MB)"
depends on ETRAX_ARCH_V32 && !ETRAXFS
default 8 if !ETRAXFS
help
Size of Video accessible memory (decimal, in MB).
config ETRAX_FLASH_BUSWIDTH
int "Buswidth of NOR flash in bytes"
default "2"
help
Width in bytes of the NOR Flash bus (1, 2 or 4). Is usually 2.
config ETRAX_NANDFLASH_BUSWIDTH
int "Buswidth of NAND flash in bytes"
default "1"
help
Width in bytes of the NAND flash (1 or 2).
config ETRAX_FLASH1_SIZE
int "FLASH1 size (dec, in MB. 0 = Unknown)"
default "0"
choice
prompt "Product debug-port"
default ETRAX_DEBUG_PORT0
config ETRAX_DEBUG_PORT0
bool "Serial-0"
help
Choose a serial port for the ETRAX debug console. Default to
port 0.
config ETRAX_DEBUG_PORT1
bool "Serial-1"
help
Use serial port 1 for the console.
config ETRAX_DEBUG_PORT2
bool "Serial-2"
help
Use serial port 2 for the console.
config ETRAX_DEBUG_PORT3
bool "Serial-3"
help
Use serial port 3 for the console.
config ETRAX_DEBUG_PORT_NULL
bool "disabled"
help
Disable serial-port debugging.
endchoice
choice
prompt "Kernel GDB port"
depends on ETRAX_KGDB
default ETRAX_KGDB_PORT0
help
Choose a serial port for kernel debugging. NOTE: This port should
not be enabled under Drivers for built-in interfaces (as it has its
own initialization code) and should not be the same as the debug port.
config ETRAX_KGDB_PORT0
bool "Serial-0"
help
Use serial port 0 for kernel debugging.
config ETRAX_KGDB_PORT1
bool "Serial-1"
help
Use serial port 1 for kernel debugging.
config ETRAX_KGDB_PORT2
bool "Serial-2"
help
Use serial port 2 for kernel debugging.
config ETRAX_KGDB_PORT3
bool "Serial-3"
help
Use serial port 3 for kernel debugging.
endchoice
source arch/cris/arch-v10/Kconfig
source arch/cris/arch-v32/Kconfig
endmenu
source "net/Kconfig"
# bring in ETRAX built-in drivers
menu "Drivers for built-in interfaces"
source arch/cris/arch-v10/drivers/Kconfig
source arch/cris/arch-v32/drivers/Kconfig
config ETRAX_AXISFLASHMAP
bool "Axis flash-map support"
select MTD
select MTD_CFI
select MTD_CFI_AMDSTD
select MTD_JEDECPROBE if ETRAX_ARCH_V32
select MTD_CHAR
select MTD_BLOCK
select MTD_PARTITIONS
select MTD_CONCAT
select MTD_COMPLEX_MAPPINGS
help
This option enables MTD mapping of flash devices. Needed to use
flash memories. If unsure, say Y.
config ETRAX_RTC
bool "Real Time Clock support"
depends on ETRAX_I2C
help
Enables drivers for the Real-Time Clock battery-backed chips on
some products. The kernel reads the time when booting, and
the date can be set using ioctl(fd, RTC_SET_TIME, &rt) with rt a
rtc_time struct (see <file:include/asm-cris/rtc.h>) on the /dev/rtc
device. You can check the time with cat /proc/rtc, but
normal time reading should be done using libc function time and
friends.
choice
prompt "RTC chip"
depends on ETRAX_RTC
default ETRAX_PCF8563 if ETRAX_ARCH_V32
default ETRAX_DS1302 if ETRAX_ARCH_V10
config ETRAX_DS1302
depends on ETRAX_ARCH_V10
bool "DS1302"
help
Enables the driver for the DS1302 Real-Time Clock battery-backed
chip on some products.
config ETRAX_PCF8563
bool "PCF8563"
help
Enables the driver for the PCF8563 Real-Time Clock battery-backed
chip on some products.
endchoice
config ETRAX_SYNCHRONOUS_SERIAL
bool "Synchronous serial-port support"
help
Select this to enable the synchronous serial port driver.
config ETRAX_SYNCHRONOUS_SERIAL_PORT0
bool "Synchronous serial port 0 enabled"
depends on ETRAX_SYNCHRONOUS_SERIAL
help
Enabled synchronous serial port 0.
config ETRAX_SYNCHRONOUS_SERIAL0_DMA
bool "Enable DMA on synchronous serial port 0."
depends on ETRAX_SYNCHRONOUS_SERIAL_PORT0
help
A synchronous serial port can run in manual or DMA mode.
Selecting this option will make it run in DMA mode.
config ETRAX_SYNCHRONOUS_SERIAL_PORT1
bool "Synchronous serial port 1 enabled"
depends on ETRAX_SYNCHRONOUS_SERIAL && (ETRAXFS || ETRAX_ARCH_V10)
help
Enabled synchronous serial port 1.
config ETRAX_SYNCHRONOUS_SERIAL1_DMA
bool "Enable DMA on synchronous serial port 1."
depends on ETRAX_SYNCHRONOUS_SERIAL_PORT1
help
A synchronous serial port can run in manual or DMA mode.
Selecting this option will make it run in DMA mode.
choice
prompt "Network LED behavior"
depends on ETRAX_ETHERNET
default ETRAX_NETWORK_LED_ON_WHEN_ACTIVITY
config ETRAX_NETWORK_LED_ON_WHEN_LINK
bool "LED_on_when_link"
help
Selecting LED_on_when_link will light the LED when there is a
connection and will flash off when there is activity.
Selecting LED_on_when_activity will light the LED only when
there is activity.
This setting will also affect the behaviour of other activity LEDs
e.g. Bluetooth.
config ETRAX_NETWORK_LED_ON_WHEN_ACTIVITY
bool "LED_on_when_activity"
help
Selecting LED_on_when_link will light the LED when there is a
connection and will flash off when there is activity.
Selecting LED_on_when_activity will light the LED only when
there is activity.
This setting will also affect the behaviour of other activity LEDs
e.g. Bluetooth.
endchoice
choice
prompt "Ser0 DMA out channel"
depends on ETRAX_SERIAL_PORT0
default ETRAX_SERIAL_PORT0_DMA6_OUT if ETRAX_ARCH_V32
default ETRAX_SERIAL_PORT0_NO_DMA_OUT if ETRAX_ARCH_V10
config ETRAX_SERIAL_PORT0_NO_DMA_OUT
bool "Ser0 uses no DMA for output"
help
Do not use DMA for ser0 output.
config ETRAX_SERIAL_PORT0_DMA6_OUT
bool "Ser0 uses DMA6 for output"
depends on ETRAXFS
help
Enables the DMA6 output channel for ser0 (ttyS0).
If you do not enable DMA, an interrupt for each character will be
used when transmitting data.
Normally you want to use DMA, unless you use the DMA channel for
something else.
config ETRAX_SERIAL_PORT0_DMA0_OUT
bool "Ser0 uses DMA0 for output"
depends on CRIS_MACH_ARTPEC3
help
Enables the DMA0 output channel for ser0 (ttyS0).
If you do not enable DMA, an interrupt for each character will be
used when transmitting data.
Normally you want to use DMA, unless you use the DMA channel for
something else.
endchoice
choice
prompt "Ser0 DMA in channel "
depends on ETRAX_SERIAL_PORT0
default ETRAX_SERIAL_PORT0_NO_DMA_IN if ETRAX_ARCH_V32
default ETRAX_SERIAL_PORT0_DMA7_IN if ETRAX_ARCH_V10
help
What DMA channel to use for ser0.
config ETRAX_SERIAL_PORT0_NO_DMA_IN
bool "Ser0 uses no DMA for input"
help
Do not use DMA for ser0 input.
config ETRAX_SERIAL_PORT0_DMA7_IN
bool "Ser0 uses DMA7 for input"
depends on ETRAXFS
help
Enables the DMA7 input channel for ser0 (ttyS0).
If you do not enable DMA, an interrupt for each character will be
used when receiving data.
Normally you want to use DMA, unless you use the DMA channel for
something else.
config ETRAX_SERIAL_PORT0_DMA1_IN
bool "Ser0 uses DMA1 for input"
depends on CRIS_MACH_ARTPEC3
help
Enables the DMA1 input channel for ser0 (ttyS0).
If you do not enable DMA, an interrupt for each character will be
used when receiveing data.
Normally you want to use DMA, unless you use the DMA channel for
something else.
endchoice
choice
prompt "Ser1 DMA in channel "
depends on ETRAX_SERIAL_PORT1
default ETRAX_SERIAL_PORT1_NO_DMA_IN if ETRAX_ARCH_V32
default ETRAX_SERIAL_PORT1_DMA9_IN if ETRAX_ARCH_V10
help
What DMA channel to use for ser1.
config ETRAX_SERIAL_PORT1_NO_DMA_IN
bool "Ser1 uses no DMA for input"
help
Do not use DMA for ser1 input.
config ETRAX_SERIAL_PORT1_DMA5_IN
bool "Ser1 uses DMA5 for input"
depends on ETRAX_ARCH_V32
help
Enables the DMA5 input channel for ser1 (ttyS1).
If you do not enable DMA, an interrupt for each character will be
used when receiving data.
Normally you want this on, unless you use the DMA channel for
something else.
config ETRAX_SERIAL_PORT1_DMA9_IN
depends on ETRAX_ARCH_V10
bool "Ser1 uses DMA9 for input"
endchoice
choice
prompt "Ser1 DMA out channel"
depends on ETRAX_SERIAL_PORT1
default ETRAX_SERIAL_PORT1_NO_DMA_OUT if ETRAX_ARCH_V32
default ETRAX_SERIAL_PORT1_DMA8_OUT if ETRAX_ARCH_V10
help
What DMA channel to use for ser1.
config ETRAX_SERIAL_PORT1_NO_DMA_OUT
bool "Ser1 uses no DMA for output"
help
Do not use DMA for ser1 output.
config ETRAX_SERIAL_PORT1_DMA8_OUT
depends on ETRAX_ARCH_V10
bool "Ser1 uses DMA8 for output"
config ETRAX_SERIAL_PORT1_DMA4_OUT
depends on ETRAX_ARCH_V32
bool "Ser1 uses DMA4 for output"
help
Enables the DMA4 output channel for ser1 (ttyS1).
If you do not enable DMA, an interrupt for each character will be
used when transmitting data.
Normally you want this on, unless you use the DMA channel for
something else.
endchoice
choice
prompt "Ser2 DMA out channel"
depends on ETRAX_SERIAL_PORT2
default ETRAX_SERIAL_PORT2_NO_DMA_OUT if ETRAX_ARCH_V32
default ETRAX_SERIAL_PORT2_DMA2_OUT if ETRAX_ARCH_V10
config ETRAX_SERIAL_PORT2_NO_DMA_OUT
bool "Ser2 uses no DMA for output"
help
Do not use DMA for ser2 output.
config ETRAX_SERIAL_PORT2_DMA2_OUT
bool "Ser2 uses DMA2 for output"
depends on ETRAXFS || ETRAX_ARCH_V10
help
Enables the DMA2 output channel for ser2 (ttyS2).
If you do not enable DMA, an interrupt for each character will be
used when transmitting data.
Normally you want to use DMA, unless you use the DMA channel for
something else.
config ETRAX_SERIAL_PORT2_DMA6_OUT
bool "Ser2 uses DMA6 for output"
depends on CRIS_MACH_ARTPEC3
help
Enables the DMA6 output channel for ser2 (ttyS2).
If you do not enable DMA, an interrupt for each character will be
used when transmitting data.
Normally you want to use DMA, unless you use the DMA channel for
something else.
endchoice
choice
prompt "Ser2 DMA in channel"
depends on ETRAX_SERIAL_PORT2
default ETRAX_SERIAL_PORT2_NO_DMA_IN if ETRAX_ARCH_V32
default ETRAX_SERIAL_PORT2_DMA3_IN if ETRAX_ARCH_V10
help
What DMA channel to use for ser2.
config ETRAX_SERIAL_PORT2_NO_DMA_IN
bool "Ser2 uses no DMA for input"
help
Do not use DMA for ser2 input.
config ETRAX_SERIAL_PORT2_DMA3_IN
bool "Ser2 uses DMA3 for input"
depends on ETRAXFS || ETRAX_ARCH_V10
help
Enables the DMA3 input channel for ser2 (ttyS2).
If you do not enable DMA, an interrupt for each character will be
used when receiving data.
Normally you want to use DMA, unless you use the DMA channel for
something else.
config ETRAX_SERIAL_PORT2_DMA7_IN
bool "Ser2 uses DMA7 for input"
depends on CRIS_MACH_ARTPEC3
help
Enables the DMA7 input channel for ser2 (ttyS2).
If you do not enable DMA, an interrupt for each character will be
used when receiveing data.
Normally you want to use DMA, unless you use the DMA channel for
something else.
endchoice
choice
prompt "Ser3 DMA in channel"
depends on ETRAX_SERIAL_PORT3
default ETRAX_SERIAL_PORT3_NO_DMA_IN if ETRAX_ARCH_V32
default ETRAX_SERIAL_PORT3_DMA5_IN if ETRAX_ARCH_V10
help
What DMA channel to use for ser3.
config ETRAX_SERIAL_PORT3_NO_DMA_IN
bool "Ser3 uses no DMA for input"
help
Do not use DMA for ser3 input.
config ETRAX_SERIAL_PORT3_DMA5_IN
depends on ETRAX_ARCH_V10
bool "DMA 5"
config ETRAX_SERIAL_PORT3_DMA9_IN
bool "Ser3 uses DMA9 for input"
depends on ETRAXFS
help
Enables the DMA9 input channel for ser3 (ttyS3).
If you do not enable DMA, an interrupt for each character will be
used when receiving data.
Normally you want to use DMA, unless you use the DMA channel for
something else.
config ETRAX_SERIAL_PORT3_DMA3_IN
bool "Ser3 uses DMA3 for input"
depends on CRIS_MACH_ARTPEC3
help
Enables the DMA3 input channel for ser3 (ttyS3).
If you do not enable DMA, an interrupt for each character will be
used when receiveing data.
Normally you want to use DMA, unless you use the DMA channel for
something else.
endchoice
choice
prompt "Ser3 DMA out channel"
depends on ETRAX_SERIAL_PORT3
default ETRAX_SERIAL_PORT3_NO_DMA_OUT if ETRAX_ARCH_V32
default ETRAX_SERIAL_PORT3_DMA4_OUT if ETRAX_ARCH_V10
config ETRAX_SERIAL_PORT3_NO_DMA_OUT
bool "Ser3 uses no DMA for output"
help
Do not use DMA for ser3 output.
config ETRAX_SERIAL_PORT3_DMA4_OUT
depends on ETRAX_ARCH_V10
bool "DMA 4"
config ETRAX_SERIAL_PORT3_DMA8_OUT
bool "Ser3 uses DMA8 for output"
depends on ETRAXFS
help
Enables the DMA8 output channel for ser3 (ttyS3).
If you do not enable DMA, an interrupt for each character will be
used when transmitting data.
Normally you want to use DMA, unless you use the DMA channel for
something else.
config ETRAX_SERIAL_PORT3_DMA2_OUT
bool "Ser3 uses DMA2 for output"
depends on CRIS_MACH_ARTPEC3
help
Enables the DMA2 output channel for ser3 (ttyS3).
If you do not enable DMA, an interrupt for each character will be
used when transmitting data.
Normally you want to use DMA, unless you use the DMA channel for
something else.
endchoice
endmenu
source "drivers/base/Kconfig"
# standard linux drivers
source "drivers/mtd/Kconfig"
source "drivers/parport/Kconfig"
source "drivers/pnp/Kconfig"
source "drivers/block/Kconfig"
source "drivers/ide/Kconfig"
source "drivers/net/Kconfig"
source "drivers/i2c/Kconfig"
source "drivers/rtc/Kconfig"
#
# input before char - char/joystick depends on it. As does USB.
#
source "drivers/input/Kconfig"
source "drivers/char/Kconfig"
source "fs/Kconfig"
source "drivers/usb/Kconfig"
source "arch/cris/Kconfig.debug"
source "security/Kconfig"
source "crypto/Kconfig"
source "lib/Kconfig"
Reference in New Issue View Git Blame Copy Permalink