gemini: set PREEMPT_NONE as default preemption model

Gemini currently uses the PREEMPT model, which is not aligned with
OpenWrt's default. Switch to PREEMPT_NONE for consistency with OpenWrt's
default configuration. Preemption model selection is now available via
menuconfig for further customization.

Signed-off-by: Thomas Richard <thomas.richard@bootlin.com>
Link: https://github.com/openwrt/openwrt/pull/21413
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>

target/linux/gemini/config-6.12

@@ -40,7 +40,6 @@ CONFIG_CLONE_BACKWARDS=y
 CONFIG_CMA=y
 CONFIG_CMA_ALIGNMENT=8
 CONFIG_CMA_AREAS=7
-# CONFIG_CMA_DEBUG is not set
 # CONFIG_CMA_DEBUGFS is not set
 CONFIG_CMA_SIZE_PERCENTAGE=10
 # CONFIG_CMA_SIZE_SEL_MAX is not set
@@ -53,8 +52,6 @@ CONFIG_COMMON_CLK_GEMINI=y
 CONFIG_COMPACT_UNEVICTABLE_DEFAULT=1
 CONFIG_COMPAT_32BIT_TIME=y
 CONFIG_CONSOLE_TRANSLATIONS=y
-CONFIG_CONTEXT_TRACKING=y
-CONFIG_CONTEXT_TRACKING_IDLE=y
 CONFIG_CONTIG_ALLOC=y
 CONFIG_COREDUMP=y
 CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS=y
@@ -68,22 +65,19 @@ CONFIG_CPU_CP15_MMU=y
 # CONFIG_CPU_DCACHE_WRITETHROUGH is not set
 CONFIG_CPU_FA526=y
 CONFIG_CPU_LITTLE_ENDIAN=y
+CONFIG_CPU_MITIGATIONS=y
 CONFIG_CPU_NO_EFFICIENT_FFS=y
 CONFIG_CPU_PABRT_LEGACY=y
 CONFIG_CPU_THERMAL=y
 CONFIG_CPU_TLB_FA=y
 CONFIG_CPU_USE_DOMAINS=y
-CONFIG_CRASH_CORE=y
 CONFIG_CRC16=y
-# CONFIG_CRC32_SARWATE is not set
-CONFIG_CRC32_SLICEBY8=y
 CONFIG_CRC_CCITT=y
 CONFIG_CRC_ITU_T=y
 CONFIG_CROSS_MEMORY_ATTACH=y
 CONFIG_CRYPTO_CMAC=y
 CONFIG_CRYPTO_CRC32C=y
 CONFIG_CRYPTO_DES=y
-# CONFIG_CRYPTO_DEV_JH7110 is not set
 CONFIG_CRYPTO_DEV_SL3516=y
 # CONFIG_CRYPTO_DEV_SL3516_DEBUG is not set
 CONFIG_CRYPTO_DRBG=y
@@ -96,6 +90,9 @@ CONFIG_CRYPTO_GENIV=y
 CONFIG_CRYPTO_HMAC=y
 CONFIG_CRYPTO_HW=y
 CONFIG_CRYPTO_JITTERENTROPY=y
+CONFIG_CRYPTO_JITTERENTROPY_MEMORY_BLOCKS=64
+CONFIG_CRYPTO_JITTERENTROPY_MEMORY_BLOCKSIZE=32
+CONFIG_CRYPTO_JITTERENTROPY_OSR=1
 CONFIG_CRYPTO_LIB_BLAKE2S_GENERIC=y
 CONFIG_CRYPTO_LIB_DES=y
 CONFIG_CRYPTO_LIB_GF128MUL=y
@@ -130,8 +127,9 @@ CONFIG_DMATEST=y
 CONFIG_DMA_CMA=y
 CONFIG_DMA_ENGINE=y
 CONFIG_DMA_ENGINE_RAID=y
+CONFIG_DMA_NEED_SYNC=y
 CONFIG_DMA_OF=y
-CONFIG_DMA_OPS=y
+CONFIG_DMA_OPS_HELPERS=y
 CONFIG_DMA_SHARED_BUFFER=y
 CONFIG_DMA_VIRTUAL_CHANNELS=y
 CONFIG_DRM=y
@@ -160,12 +158,12 @@ CONFIG_FB=y
 CONFIG_FB_CORE=y
 CONFIG_FB_DEFERRED_IO=y
 CONFIG_FB_DMAMEM_HELPERS=y
-CONFIG_FB_IOMEM_FOPS=y
+CONFIG_FB_DMAMEM_HELPERS_DEFERRED=y
+CONFIG_FB_SYSMEM_FOPS=y
 CONFIG_FB_SYSMEM_HELPERS=y
 CONFIG_FB_SYSMEM_HELPERS_DEFERRED=y
 CONFIG_FB_SYS_COPYAREA=y
 CONFIG_FB_SYS_FILLRECT=y
-CONFIG_FB_SYS_FOPS=y
 CONFIG_FB_SYS_IMAGEBLIT=y
 CONFIG_FHANDLE=y
 CONFIG_FIXED_PHY=y
@@ -173,6 +171,7 @@ CONFIG_FIX_EARLYCON_MEM=y
 CONFIG_FONT_8x16=y
 CONFIG_FONT_8x8=y
 CONFIG_FONT_SUPPORT=y
+CONFIG_FORCE_NR_CPUS=y
 CONFIG_FRAMEBUFFER_CONSOLE=y
 CONFIG_FRAMEBUFFER_CONSOLE_DETECT_PRIMARY=y
 # CONFIG_FRAMEBUFFER_CONSOLE_ROTATION is not set
@@ -185,13 +184,13 @@ CONFIG_FWNODE_MDIO=y
 CONFIG_FW_LOADER_PAGED_BUF=y
 CONFIG_FW_LOADER_SYSFS=y
 # CONFIG_FW_LOADER_USER_HELPER_FALLBACK is not set
-CONFIG_GCC_ASM_GOTO_OUTPUT_WORKAROUND=y
 CONFIG_GEMINI_ETHERNET=y
 CONFIG_GENERIC_ALLOCATOR=y
 CONFIG_GENERIC_ATOMIC64=y
 CONFIG_GENERIC_BUG=y
 CONFIG_GENERIC_CLOCKEVENTS=y
 CONFIG_GENERIC_CPU_AUTOPROBE=y
+CONFIG_GENERIC_CPU_DEVICES=y
 CONFIG_GENERIC_EARLY_IOREMAP=y
 CONFIG_GENERIC_IDLE_POLL_SETUP=y
 CONFIG_GENERIC_IRQ_MULTI_HANDLER=y
@@ -209,7 +208,6 @@ CONFIG_GPIOLIB_IRQCHIP=y
 CONFIG_GPIO_CDEV=y
 CONFIG_GPIO_FTGPIO010=y
 CONFIG_GPIO_GENERIC=y
-CONFIG_GRO_CELLS=y
 CONFIG_HARDIRQS_SW_RESEND=y
 CONFIG_HAS_DMA=y
 CONFIG_HAS_IOMEM=y
@@ -219,13 +217,11 @@ CONFIG_HDMI=y
 CONFIG_HIGHMEM=y
 CONFIG_HIGHPTE=y
 CONFIG_HWMON=y
-CONFIG_HW_CONSOLE=y
 CONFIG_HW_RANDOM=y
 CONFIG_HZ_FIXED=0
 CONFIG_I2C=y
 CONFIG_I2C_ALGOBIT=y
 CONFIG_I2C_BOARDINFO=y
-CONFIG_I2C_COMPAT=y
 CONFIG_I2C_GPIO=y
 CONFIG_I2C_HELPER_AUTO=y
 CONFIG_INITRAMFS_SOURCE=""
@@ -285,8 +281,7 @@ CONFIG_NAMESPACES=y
 CONFIG_NEED_DMA_MAP_STATE=y
 CONFIG_NEED_KUSER_HELPERS=y
 CONFIG_NEED_PER_CPU_KM=y
-CONFIG_NEED_SRCU_NMI_SAFE=y
-CONFIG_NET_DEVLINK=y
+CONFIG_NET_DEVMEM=y
 CONFIG_NET_EGRESS=y
 CONFIG_NET_INGRESS=y
 CONFIG_NET_NS=y
@@ -311,7 +306,6 @@ CONFIG_PAGE_OFFSET=0xC0000000
 CONFIG_PAGE_POOL=y
 CONFIG_PAGE_SIZE_LESS_THAN_256KB=y
 CONFIG_PAGE_SIZE_LESS_THAN_64KB=y
-CONFIG_PAHOLE_HAS_LANG_EXCLUDE=y
 # CONFIG_PANIC_ON_OOPS is not set
 CONFIG_PANIC_ON_OOPS_VALUE=0
 CONFIG_PANIC_TIMEOUT=0
@@ -329,7 +323,6 @@ CONFIG_PERF_USE_VMALLOC=y
 CONFIG_PGTABLE_LEVELS=2
 CONFIG_PHYLIB=y
 CONFIG_PHYLIB_LEDS=y
-CONFIG_PHYLINK=y
 CONFIG_PID_NS=y
 CONFIG_PINCTRL=y
 CONFIG_PINCTRL_GEMINI=y
@@ -339,12 +332,6 @@ CONFIG_PM_CLK=y
 CONFIG_POWER_RESET=y
 CONFIG_POWER_RESET_GEMINI_POWEROFF=y
 CONFIG_POWER_RESET_SYSCON=y
-CONFIG_PREEMPT=y
-CONFIG_PREEMPTION=y
-CONFIG_PREEMPT_BUILD=y
-CONFIG_PREEMPT_COUNT=y
-# CONFIG_PREEMPT_NONE is not set
-CONFIG_PREEMPT_RCU=y
 CONFIG_PROC_PAGE_MONITOR=y
 CONFIG_PTP_1588_CLOCK_OPTIONAL=y
 CONFIG_RANDSTRUCT_NONE=y
@@ -401,7 +388,6 @@ CONFIG_SPI=y
 CONFIG_SPI_BITBANG=y
 CONFIG_SPI_GPIO=y
 CONFIG_SPI_MASTER=y
-CONFIG_SPLIT_PTLOCK_CPUS=999999
 CONFIG_STACKDEPOT=y
 CONFIG_STACKTRACE=y
 # CONFIG_STRIP_ASM_SYMS is not set
@@ -419,10 +405,8 @@ CONFIG_THREAD_INFO_IN_TASK=y
 CONFIG_TICK_CPU_ACCOUNTING=y
 CONFIG_TIMER_OF=y
 CONFIG_TIMER_PROBE=y
-CONFIG_TREE_RCU=y
-CONFIG_TREE_SRCU=y
+CONFIG_TINY_SRCU=y
 CONFIG_UNCOMPRESS_INCLUDE="debug/uncompress.h"
-CONFIG_UNINLINE_SPIN_UNLOCK=y
 CONFIG_UNWINDER_ARM=y
 CONFIG_USB_COMMON=y
 # CONFIG_USB_FOTG210 is not set
@@ -435,8 +419,7 @@ CONFIG_USE_OF=y
 CONFIG_UTS_NS=y
 CONFIG_VGA_ARB=y
 CONFIG_VGA_ARB_MAX_GPUS=16
-CONFIG_VIDEO_CMDLINE=y
-CONFIG_VIDEO_NOMODESET=y
+CONFIG_VIDEO=y
 CONFIG_VM_EVENT_COUNTERS=y
 CONFIG_VT=y
 CONFIG_VT_CONSOLE=y
@@ -444,10 +427,11 @@ CONFIG_VT_HW_CONSOLE_BINDING=y
 CONFIG_WATCHDOG_CORE=y
 # CONFIG_WQ_POWER_EFFICIENT_DEFAULT is not set
 CONFIG_XZ_DEC_ARM=y
+CONFIG_XZ_DEC_ARM64=y
 CONFIG_XZ_DEC_ARMTHUMB=y
 CONFIG_XZ_DEC_BCJ=y
-CONFIG_XZ_DEC_IA64=y
 CONFIG_XZ_DEC_POWERPC=y
+CONFIG_XZ_DEC_RISCV=y
 CONFIG_XZ_DEC_SPARC=y
 CONFIG_XZ_DEC_X86=y
 CONFIG_ZBOOT_ROM_BSS=0