[SQUASH] Drop anxiety and iosched_switcher

This reverts the following commits:
88c09ba sweet_defconfig: enable anxiety and switch to it on screen off
b365957 iosched_switcher: Modding Switcher To Switch To Anxiety!
2b4f2e1 block: I/O scheduler driver mod. delay setting noop when screen goes off.
97063db iosched_switcher: Remove unneeded code in change_elevator()
e8fdaef iosched_switcher: Ensure the previous elevator name is always present
2dc7556 iosched_switcher: Allow multiple block devices to be used
c665579 block: Add driver to change the I/O scheduler when the screen turns off
99b0ac8 anxiety-iosched: Nornalize intendentation style
fa31001 anxiety-iosched: Inform elevator about dispatched requests
d8ce583 anxiety-iosched: Handle forced queue drainage
021a255 anxiety-iosched: Separate batching process out of dispatch
5402717 anxiety-iosched: Hint about NULL request unlikelyhood
f36f670 anxiety-iosched: Clarify sync ratio documentation
1775d93 anxiety-iosched: Update GPL license header to SPDX
a0eb362 anxiety-iosched: Update next list entry usage
cb346a7 anxiety-iosched: Standardize loop iterator data type
bcebde7 anxiety-iosched: Rewrite Kconfig help section
fd2042b anxiety-iosched: Refactor read/write terminology
2590791 anxiety-iosched: Inline private dispatch function
64c274b anxiety-iosched: Create function for dispatch availability
f34bede anxiety-iosched: Perform direct read request batching
7acd5c0 anxiety-iosched: Add low-level dispatch function
2d6491e anxiety-iosched: Update elevator function usage
697323b anxiety-iosched: Raise read ratio slightly
bb50f54 anxiety-iosched: Abide by 80 character line width standard
4bbdba7 anxiety-iosched: Refactor selection functionality
285b43d anxiety-iosched: Fix improper starvation logic
239dd96 block: anxiety: Clean up queue data variable initialization
496238c block: anxiety: Use built-in former / latter handlers
1566275 block: anxiety: Add logic for sync block requests
02f9835 block: Introduce Anxiety I/O Scheduler

Causes more trouble then benefits.

Signed-off-by: Yahya Wessam <yahyawessam2002@gmail.com>

Author: vbajs

arch/arm64/configs/sweet_defconfig

@@ -383,11 +383,8 @@ CONFIG_IOSCHED_NOOP=y
 CONFIG_IOSCHED_DEADLINE=y
 CONFIG_IOSCHED_CFQ=y
 CONFIG_CFQ_GROUP_IOSCHED=y
-CONFIG_IOSCHED_ANXIETY=y
-CONFIG_IOSCHED_SWITCHER=y
 # CONFIG_DEFAULT_DEADLINE is not set
 CONFIG_DEFAULT_CFQ=y
-# CONFIG_DEFAULT_ANXIETY is not set
 # CONFIG_DEFAULT_NOOP is not set
 CONFIG_DEFAULT_IOSCHED="cfq"
 CONFIG_MQ_IOSCHED_DEADLINE=y

block/Kconfig.iosched

@@ -40,30 +40,6 @@ config CFQ_GROUP_IOSCHED
 	---help---
 	  Enable group IO scheduling in CFQ.
 
-config IOSCHED_ANXIETY
-	tristate "Anxiety I/O Scheduler"
-	default y
-	---help---
-	  Anxiety is a low-latency I/O scheduler designed for use in
-	  embedded devices with flash storage. It attempts to provide
-	  unfair request bias, batching synchronous requests together
-	  at the expense of delaying asyncrhonous requests. By
-	  definition, synchronous requests are essentially "holding up"
-	  the current processes until they are dispatched. By biasing
-	  and batching synchronous requests, process initialization is
-	  expedited.
-
-config IOSCHED_SWITCHER
-	bool "Use Anxiety while the screen is off"
-	depends on IOSCHED_ANXIETY
-	---help---
-	  This enables a driver that switches the I/O scheduler for a single
-	  block device to Noop when the screen turns off, and back to its
-	  original I/O scheduler after a delay when the screen is turned back
-	  on. It requires being manually initialized from a different driver
-	  in order to grab the request_queue pointer that should have its I/O
-	  scheduler switched to Noop when the screen turns off.
-
 choice
 
 	prompt "Default I/O scheduler"
@@ -78,17 +54,13 @@ choice
 	config DEFAULT_CFQ
 		bool "CFQ" if IOSCHED_CFQ=y
 
-	config DEFAULT_ANXIETY
-		bool "Anxiety" if IOSCHED_ANXIETY=y
-
 	config DEFAULT_NOOP
 		bool "No-op"
 
 endchoice
 
 config DEFAULT_IOSCHED
 	string
-	default "anxiety" if DEFAULT_ANXIETY
 	default "deadline" if DEFAULT_DEADLINE
 	default "cfq" if DEFAULT_CFQ
 	default "noop" if DEFAULT_NOOP

block/Makefile

@@ -20,13 +20,11 @@ obj-$(CONFIG_BLK_DEV_THROTTLING)	+= blk-throttle.o
 obj-$(CONFIG_IOSCHED_NOOP)	+= noop-iosched.o
 obj-$(CONFIG_IOSCHED_DEADLINE)	+= deadline-iosched.o
 obj-$(CONFIG_IOSCHED_CFQ)	+= cfq-iosched.o
-obj-$(CONFIG_IOSCHED_ANXIETY)	+= anxiety-iosched.o
 obj-$(CONFIG_MQ_IOSCHED_DEADLINE)	+= mq-deadline.o
 obj-$(CONFIG_MQ_IOSCHED_KYBER)	+= kyber-iosched.o
 bfq-y				:= bfq-iosched.o bfq-wf2q.o bfq-cgroup.o
 obj-$(CONFIG_IOSCHED_BFQ)	+= bfq.o
 
-obj-$(CONFIG_IOSCHED_SWITCHER) += iosched_switcher.o
 obj-$(CONFIG_BLOCK_COMPAT)	+= compat_ioctl.o
 obj-$(CONFIG_BLK_CMDLINE_PARSER)	+= cmdline-parser.o
 obj-$(CONFIG_BLK_DEV_INTEGRITY) += bio-integrity.o blk-integrity.o t10-pi.o
@@ -39,4 +37,4 @@ obj-$(CONFIG_BLK_DEBUG_FS)	+= blk-mq-debugfs.o
 obj-$(CONFIG_BLK_SED_OPAL)	+= sed-opal.o
 obj-$(CONFIG_BLK_INLINE_ENCRYPTION)	+= keyslot-manager.o bio-crypt-ctx.o \
 					   blk-crypto.o
-obj-$(CONFIG_BLK_INLINE_ENCRYPTION_FALLBACK)	+= blk-crypto-fallback.o
+obj-$(CONFIG_BLK_INLINE_ENCRYPTION_FALLBACK)	+= blk-crypto-fallback.o