IO SCHEDULERS: add ROW and ZEN
/block/Kconfig.iosched
blob:35be003f25301cf557ed29b0a4f0a7d6e54b65e8 -> blob:3911375b1d0dd692261b62191ba508698445e847
--- block/Kconfig.iosched
+++ block/Kconfig.iosched
@@ -21,16 +21,6 @@ config IOSCHED_DEADLINE
a new point in the service tree and doing a batch of IO from there
in case of expiry.
-config IOSCHED_ROW
- tristate "ROW I/O scheduler"
- ---help---
- The ROW I/O scheduler gives priority to READ requests over the
- WRITE requests when dispatching, without starving WRITE requests.
- Requests are kept in priority queues. Dispatching is done in a RR
- manner when the dispatch quantum for each queue is calculated
- according to queue priority.
- Most suitable for mobile devices.
-
config IOSCHED_CFQ
tristate "CFQ I/O scheduler"
# If BLK_CGROUP is a module, CFQ has to be built as module.
@@ -60,22 +50,6 @@ config IOSCHED_VR
Requests are chosen according to SSTF with a penalty of rev_penalty
for switching head direction.
-config IOSCHED_SIO
- tristate "Simple I/O scheduler"
- default y
- ---help---
- The Simple I/O scheduler is an extremely simple scheduler,
- based on noop and deadline, that relies on deadlines to
- ensure fairness. The algorithm does not do any sorting but
- basic merging, trying to keep a minimum overhead. It is aimed
- mainly for aleatory access devices (eg: flash devices).
-
-config IOSCHED_ZEN
- tristate "Zen I/O scheduler"
- default y
- ---help---
- FCFS, dispatches are back-inserted, deadlines ensure fairness.
- Should work best with devices where there is no travel delay.
choice
prompt "Default I/O scheduler"
default DEFAULT_CFQ
@@ -86,42 +60,24 @@ choice
config DEFAULT_DEADLINE
bool "Deadline" if IOSCHED_DEADLINE=y
- config DEFAULT_ROW
- bool "ROW" if IOSCHED_ROW=y
- help
- The ROW I/O scheduler gives priority to READ requests
- over the WRITE requests when dispatching, without starving
- WRITE requests. Requests are kept in priority queues.
- Dispatching is done in a RR manner when the dispatch quantum
- for each queue is defined according to queue priority.
- Most suitable for mobile devices.
-
config DEFAULT_CFQ
bool "CFQ" if IOSCHED_CFQ=y
- config DEFAULT_SIO
- bool "SIO" if IOSCHED_SIO=y
-
config DEFAULT_VR
bool "V(R)" if IOSCHED_VR=y
config DEFAULT_NOOP
bool "No-op"
-
- config DEFAULT_ZEN
- bool "ZEN" if IOSCHED_ZEN=y
+
endchoice
config DEFAULT_IOSCHED
string
default "deadline" if DEFAULT_DEADLINE
- default "row" if DEFAULT_ROW
default "cfq" if DEFAULT_CFQ
- default "sio" if DEFAULT_SIO
default "vr" if DEFAULT_VR
default "noop" if DEFAULT_NOOP
- default "zen" if DEFAULT_ZEN
-
+
endmenu
endif