config: disable stackprotector, cpu power managements

[tiopex]

Reduced kernel size from 7,5mb to 4,8mb

[Apaczer]

Overview of changes:

index 93c844d05..3983c07ee 100644
--- a/config1
+++ b/config2
@@ -284,7 +284,6 @@ CONFIG_ARM_THUMB=y
 CONFIG_NEED_KUSER_HELPERS=y
 CONFIG_KUSER_HELPERS=y
 CONFIG_ARM_L1_CACHE_SHIFT=5
-# CONFIG_DEBUG_ALIGN_RODATA is not set
 # end of System Type
 
 #
@@ -351,42 +350,13 @@ CONFIG_AUTO_ZRELADDR=y
 #
 # CPU Frequency scaling
 #
-CONFIG_CPU_FREQ=y
-# CONFIG_CPU_FREQ_STAT is not set
-CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE=y
-# CONFIG_CPU_FREQ_DEFAULT_GOV_POWERSAVE is not set
-# CONFIG_CPU_FREQ_DEFAULT_GOV_USERSPACE is not set
-# CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND is not set
-# CONFIG_CPU_FREQ_DEFAULT_GOV_CONSERVATIVE is not set
-CONFIG_CPU_FREQ_GOV_PERFORMANCE=y
-# CONFIG_CPU_FREQ_GOV_POWERSAVE is not set
-# CONFIG_CPU_FREQ_GOV_USERSPACE is not set
-# CONFIG_CPU_FREQ_GOV_ONDEMAND is not set
-# CONFIG_CPU_FREQ_GOV_CONSERVATIVE is not set
-
-#
-# CPU frequency scaling drivers
-#
-CONFIG_CPUFREQ_DT=y
-CONFIG_CPUFREQ_DT_PLATDEV=y
-# CONFIG_ARM_ALLWINNER_SUN50I_CPUFREQ_NVMEM is not set
+# CONFIG_CPU_FREQ is not set
 # end of CPU Frequency scaling
 
 #
 # CPU Idle
 #
-CONFIG_CPU_IDLE=y
-CONFIG_CPU_IDLE_MULTIPLE_DRIVERS=y
-CONFIG_CPU_IDLE_GOV_LADDER=y
-CONFIG_CPU_IDLE_GOV_MENU=y
-# CONFIG_CPU_IDLE_GOV_TEO is not set
-CONFIG_DT_IDLE_STATES=y
-
-#
-# ARM CPU Idle Drivers
-#
-CONFIG_ARM_CPUIDLE=y
-# end of ARM CPU Idle Drivers
+# CONFIG_CPU_IDLE is not set
 # end of CPU Idle
 # end of CPU Power Management
 
@@ -405,21 +375,11 @@ CONFIG_FPE_FASTFPE=y
 #
 # Power management options
 #
-CONFIG_SUSPEND=y
-CONFIG_SUSPEND_FREEZER=y
-# CONFIG_SUSPEND_SKIP_SYNC is not set
+# CONFIG_SUSPEND is not set
 # CONFIG_HIBERNATION is not set
-CONFIG_PM_SLEEP=y
-# CONFIG_PM_AUTOSLEEP is not set
-# CONFIG_PM_WAKELOCKS is not set
-CONFIG_PM=y
-# CONFIG_PM_DEBUG is not set
+# CONFIG_PM is not set
 # CONFIG_APM_EMULATION is not set
-CONFIG_PM_CLK=y
-# CONFIG_WQ_POWER_EFFICIENT_DEFAULT is not set
-CONFIG_CPU_PM=y
 CONFIG_ARCH_SUSPEND_POSSIBLE=y
-CONFIG_ARM_CPU_SUSPEND=y
 CONFIG_ARCH_HIBERNATION_POSSIBLE=y
 # end of Power management options
 
@@ -454,10 +414,9 @@ CONFIG_HAVE_PERF_USER_STACK_DUMP=y
 CONFIG_HAVE_ARCH_JUMP_LABEL=y
 CONFIG_ARCH_WANT_IPC_PARSE_VERSION=y
 CONFIG_HAVE_ARCH_SECCOMP=y
-CONFIG_SECCOMP=y
+# CONFIG_SECCOMP is not set
 CONFIG_HAVE_STACKPROTECTOR=y
-CONFIG_STACKPROTECTOR=y
-CONFIG_STACKPROTECTOR_STRONG=y
+# CONFIG_STACKPROTECTOR is not set
 CONFIG_LTO_NONE=y
 CONFIG_HAVE_CONTEXT_TRACKING=y
 CONFIG_HAVE_VIRT_CPU_ACCOUNTING_GEN=y
@@ -475,9 +434,9 @@ CONFIG_OLD_SIGACTION=y
 CONFIG_COMPAT_32BIT_TIME=y
 CONFIG_ARCH_OPTIONAL_KERNEL_RWX=y
 CONFIG_ARCH_HAS_STRICT_KERNEL_RWX=y
-CONFIG_STRICT_KERNEL_RWX=y
+# CONFIG_STRICT_KERNEL_RWX is not set
 CONFIG_ARCH_HAS_STRICT_MODULE_RWX=y
-CONFIG_STRICT_MODULE_RWX=y
+# CONFIG_STRICT_MODULE_RWX is not set
 CONFIG_ARCH_HAS_PHYS_TO_DMA=y
 CONFIG_ARCH_WANT_LD_ORPHAN_WARN=y
 CONFIG_HAVE_ARCH_PFN_VALID=y
@@ -524,8 +483,6 @@ CONFIG_MSDOS_PARTITION=y
 CONFIG_EFI_PARTITION=y
 # end of Partition Types
 
-CONFIG_BLK_PM=y
-
 #
 # IO Schedulers
 #
@@ -541,7 +498,6 @@ CONFIG_INLINE_WRITE_UNLOCK=y
 CONFIG_INLINE_WRITE_UNLOCK_IRQ=y
 CONFIG_ARCH_SUPPORTS_ATOMIC_RMW=y
 CONFIG_ARCH_HAS_NON_OVERLAPPING_ADDRESS_SPACE=y
-CONFIG_FREEZER=y
 
 #
 # Executable file formats
@@ -715,7 +671,6 @@ CONFIG_FW_LOADER=y
 CONFIG_EXTRA_FIRMWARE=""
 # CONFIG_FW_LOADER_USER_HELPER is not set
 # CONFIG_FW_LOADER_COMPRESS is not set
-CONFIG_FW_CACHE=y
 # end of Firmware loader
 
 CONFIG_ALLOW_DEV_COREDUMP=y
@@ -1051,7 +1006,6 @@ CONFIG_TTY=y
 CONFIG_VT=y
 CONFIG_CONSOLE_TRANSLATIONS=y
 CONFIG_VT_CONSOLE=y
-CONFIG_VT_CONSOLE_SLEEP=y
 CONFIG_HW_CONSOLE=y
 CONFIG_VT_HW_CONSOLE_BINDING=y
 CONFIG_UNIX98_PTYS=y
@@ -1638,10 +1592,8 @@ CONFIG_USB=y
 CONFIG_USB_DEFAULT_PERSIST=y
 # CONFIG_USB_FEW_INIT_RETRIES is not set
 CONFIG_USB_DYNAMIC_MINORS=y
-CONFIG_USB_OTG=y
 # CONFIG_USB_OTG_PRODUCTLIST is not set
 # CONFIG_USB_OTG_DISABLE_EXTERNAL_HUB is not set
-# CONFIG_USB_OTG_FSM is not set
 CONFIG_USB_AUTOSUSPEND_DELAY=2
 # CONFIG_USB_MON is not set
 
@@ -1965,7 +1917,6 @@ CONFIG_SUN4I_TIMER=y
 # NXP/Freescale QorIQ SoC drivers
 #
 # CONFIG_QUICC_ENGINE is not set
-# CONFIG_FSL_RCPM is not set
 # end of NXP/Freescale QorIQ SoC drivers
 
 #
@@ -2575,7 +2526,6 @@ CONFIG_DEBUG_MISC=y
 # CONFIG_DEBUG_PAGEALLOC is not set
 # CONFIG_PAGE_OWNER is not set
 # CONFIG_PAGE_POISONING is not set
-# CONFIG_DEBUG_RODATA_TEST is not set
 # CONFIG_DEBUG_WX is not set
 # CONFIG_DEBUG_OBJECTS is not set
 CONFIG_HAVE_DEBUG_KMEMLEAK=y

[Apaczer]

good findings