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kernel: only optimized for size if small_flash

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Add a new config option to allow to select the default compile
optimization level for the kernel.

Select the optimization for size by default if the small_flash feature is
set. Otherwise "Optimize for performance" is set.

Add the small_flash feature flag to all (sub)targets which had the
optimization for size in their default kernel config.

Remove CC_OPTIMIZE_FOR_* symbols from all kernel configs to apply the new
setting.

Exceptions to the above are:

  - lantiq, where the optimization for size is only required for the
    xway_legacy subtarget but was set for the whole target
  - mediatek, ramips/mt7620 & ramips/mt76x8 where boards should have
    plenty of space and an optimization for size doesn't make much sense
  - rb532, which has 128MByte flash

Signed-off-by: Mathias Kresin <dev@kresin.me>
This commit is contained in:
Mathias Kresin
2018-07-09 20:48:56 +02:00
parent 621fa91a82
commit cf7154db07
29 changed files with 30 additions and 40 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
target/linux/ramips/mt7620/config-4.14
View File

@@ -22,8 +22,6 @@ CONFIG_ARCH_USE_QUEUED_SPINLOCKS=y
CONFIG_ARCH_WANT_IPC_PARSE_VERSION=y
CONFIG_AT803X_PHY=y
CONFIG_BLK_MQ_PCI=y
# CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE is not set
CONFIG_CC_OPTIMIZE_FOR_SIZE=y
CONFIG_CEVT_R4K=y
CONFIG_CEVT_SYSTICK_QUIRK=y
CONFIG_CLKDEV_LOOKUP=y

2
target/linux/ramips/mt76x8/config-4.14
View File

@@ -22,8 +22,6 @@ CONFIG_ARCH_USE_QUEUED_SPINLOCKS=y
CONFIG_ARCH_WANT_IPC_PARSE_VERSION=y
CONFIG_AT803X_PHY=y
CONFIG_BLK_MQ_PCI=y
# CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE is not set
CONFIG_CC_OPTIMIZE_FOR_SIZE=y
CONFIG_CEVT_R4K=y
CONFIG_CEVT_SYSTICK_QUIRK=y
CONFIG_CLKDEV_LOOKUP=y

2
target/linux/ramips/rt288x/config-4.14
View File

@@ -21,8 +21,6 @@ CONFIG_ARCH_USE_QUEUED_RWLOCKS=y
CONFIG_ARCH_USE_QUEUED_SPINLOCKS=y
CONFIG_ARCH_WANT_IPC_PARSE_VERSION=y
CONFIG_BLK_MQ_PCI=y
# CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE is not set
CONFIG_CC_OPTIMIZE_FOR_SIZE=y
CONFIG_CEVT_R4K=y
# CONFIG_CEVT_SYSTICK_QUIRK is not set
CONFIG_CLKDEV_LOOKUP=y

1
target/linux/ramips/rt288x/target.mk
View File

@@ -4,6 +4,7 @@
SUBTARGET:=rt288x
BOARDNAME:=RT288x based boards
FEATURES+=small_flash
CPU_TYPE:=24kc
DEFAULT_PACKAGES += kmod-rt2800-soc wpad-mini

2
target/linux/ramips/rt305x/config-4.14
View File

@@ -12,8 +12,6 @@ CONFIG_ARCH_SUPPORTS_UPROBES=y
CONFIG_ARCH_SUSPEND_POSSIBLE=y
CONFIG_ARCH_USE_BUILTIN_BSWAP=y
CONFIG_ARCH_WANT_IPC_PARSE_VERSION=y
# CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE is not set
CONFIG_CC_OPTIMIZE_FOR_SIZE=y
CONFIG_CEVT_R4K=y
CONFIG_CEVT_SYSTICK_QUIRK=y
CONFIG_CLKDEV_LOOKUP=y

2
target/linux/ramips/rt305x/target.mk
View File

@@ -4,7 +4,7 @@
SUBTARGET:=rt305x
BOARDNAME:=RT3x5x/RT5350 based boards
FEATURES+=usb ramdisk
FEATURES+=usb ramdisk small_flash
CPU_TYPE:=24kc
DEFAULT_PACKAGES += kmod-rt2800-soc wpad-mini

2
target/linux/ramips/rt3883/config-4.14
View File

@@ -22,8 +22,6 @@ CONFIG_ARCH_USE_QUEUED_RWLOCKS=y
CONFIG_ARCH_USE_QUEUED_SPINLOCKS=y
CONFIG_ARCH_WANT_IPC_PARSE_VERSION=y
CONFIG_BLK_MQ_PCI=y
# CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE is not set
CONFIG_CC_OPTIMIZE_FOR_SIZE=y
CONFIG_CEVT_R4K=y
# CONFIG_CEVT_SYSTICK_QUIRK is not set
CONFIG_CLKDEV_LOOKUP=y

2
target/linux/ramips/rt3883/target.mk
View File

@@ -4,7 +4,7 @@
SUBTARGET:=rt3883
BOARDNAME:=RT3662/RT3883 based boards
FEATURES+=usb pci
FEATURES+=usb pci small_flash
CPU_TYPE:=74kc
DEFAULT_PACKAGES += kmod-rt2800-pci kmod-rt2800-soc wpad-mini