Merge branch 'for-6.10-base-small' into for-linus

arch/arm/configs/collie_defconfig

@@ -3,7 +3,7 @@ CONFIG_LOG_BUF_SHIFT=14
 CONFIG_BLK_DEV_INITRD=y
 # CONFIG_CC_OPTIMIZE_FOR_SIZE is not set
 CONFIG_EXPERT=y
-# CONFIG_BASE_FULL is not set
+CONFIG_BASE_SMALL=y
 # CONFIG_EPOLL is not set
 CONFIG_ARCH_MULTI_V4=y
 # CONFIG_ARCH_MULTI_V7 is not set

arch/arm/configs/keystone_defconfig

@@ -12,7 +12,7 @@ CONFIG_CGROUP_DEVICE=y
 CONFIG_CGROUP_CPUACCT=y
 CONFIG_BLK_DEV_INITRD=y
 # CONFIG_ELF_CORE is not set
-# CONFIG_BASE_FULL is not set
+CONFIG_BASE_SMALL=y
 CONFIG_KALLSYMS_ALL=y
 CONFIG_EXPERT=y
 CONFIG_PROFILING=y

arch/arm/configs/lpc18xx_defconfig

@@ -8,7 +8,7 @@ CONFIG_BLK_DEV_INITRD=y
 # CONFIG_RD_LZ4 is not set
 CONFIG_CC_OPTIMIZE_FOR_SIZE=y
 # CONFIG_UID16 is not set
-# CONFIG_BASE_FULL is not set
+CONFIG_BASE_SMALL=y
 # CONFIG_FUTEX is not set
 # CONFIG_EPOLL is not set
 # CONFIG_SIGNALFD is not set

arch/arm/configs/moxart_defconfig

@@ -6,7 +6,7 @@ CONFIG_IKCONFIG=y
 CONFIG_IKCONFIG_PROC=y
 CONFIG_EXPERT=y
 # CONFIG_ELF_CORE is not set
-# CONFIG_BASE_FULL is not set
+CONFIG_BASE_SMALL=y
 # CONFIG_SIGNALFD is not set
 # CONFIG_TIMERFD is not set
 # CONFIG_EVENTFD is not set

arch/arm/configs/mps2_defconfig

@@ -5,7 +5,7 @@ CONFIG_LOG_BUF_SHIFT=16
 CONFIG_CC_OPTIMIZE_FOR_SIZE=y
 CONFIG_EXPERT=y
 # CONFIG_UID16 is not set
-# CONFIG_BASE_FULL is not set
+CONFIG_BASE_SMALL=y
 # CONFIG_FUTEX is not set
 # CONFIG_EPOLL is not set
 # CONFIG_SIGNALFD is not set

arch/arm/configs/omap1_defconfig

@@ -9,7 +9,7 @@ CONFIG_LOG_BUF_SHIFT=14
 CONFIG_BLK_DEV_INITRD=y
 CONFIG_EXPERT=y
 # CONFIG_ELF_CORE is not set
-# CONFIG_BASE_FULL is not set
+CONFIG_BASE_SMALL=y
 # CONFIG_SHMEM is not set
 # CONFIG_KALLSYMS is not set
 CONFIG_PROFILING=y

arch/arm/configs/stm32_defconfig

@@ -6,7 +6,7 @@ CONFIG_BLK_DEV_INITRD=y
 CONFIG_CC_OPTIMIZE_FOR_SIZE=y
 CONFIG_EXPERT=y
 # CONFIG_UID16 is not set
-# CONFIG_BASE_FULL is not set
+CONFIG_BASE_SMALL=y
 # CONFIG_FUTEX is not set
 # CONFIG_EPOLL is not set
 # CONFIG_SIGNALFD is not set

arch/microblaze/configs/mmu_defconfig

@@ -4,7 +4,7 @@ CONFIG_AUDIT=y
 CONFIG_IKCONFIG=y
 CONFIG_IKCONFIG_PROC=y
 CONFIG_EXPERT=y
-# CONFIG_BASE_FULL is not set
+CONFIG_BASE_SMALL=y
 CONFIG_KALLSYMS_ALL=y
 CONFIG_XILINX_MICROBLAZE0_USE_MSR_INSTR=1
 CONFIG_XILINX_MICROBLAZE0_USE_PCMP_INSTR=1

arch/mips/configs/rs90_defconfig

@@ -9,7 +9,7 @@ CONFIG_LD_DEAD_CODE_DATA_ELIMINATION=y
 # CONFIG_SGETMASK_SYSCALL is not set
 # CONFIG_SYSFS_SYSCALL is not set
 # CONFIG_ELF_CORE is not set
-# CONFIG_BASE_FULL is not set
+CONFIG_BASE_SMALL=y
 # CONFIG_TIMERFD is not set
 # CONFIG_AIO is not set
 # CONFIG_IO_URING is not set

arch/powerpc/configs/adder875_defconfig

@@ -4,7 +4,7 @@ CONFIG_SYSVIPC=y
 CONFIG_LOG_BUF_SHIFT=14
 CONFIG_EXPERT=y
 # CONFIG_ELF_CORE is not set
-# CONFIG_BASE_FULL is not set
+CONFIG_BASE_SMALL=y
 # CONFIG_FUTEX is not set
 # CONFIG_VM_EVENT_COUNTERS is not set
 # CONFIG_BLK_DEV_BSG is not set

arch/powerpc/configs/ep88xc_defconfig

@@ -6,7 +6,7 @@ CONFIG_HIGH_RES_TIMERS=y
 CONFIG_LOG_BUF_SHIFT=14
 CONFIG_EXPERT=y
 # CONFIG_ELF_CORE is not set
-# CONFIG_BASE_FULL is not set
+CONFIG_BASE_SMALL=y
 # CONFIG_FUTEX is not set
 # CONFIG_VM_EVENT_COUNTERS is not set
 # CONFIG_BLK_DEV_BSG is not set

arch/powerpc/configs/mpc866_ads_defconfig

@@ -6,7 +6,7 @@ CONFIG_HIGH_RES_TIMERS=y
 CONFIG_LOG_BUF_SHIFT=14
 CONFIG_EXPERT=y
 # CONFIG_BUG is not set
-# CONFIG_BASE_FULL is not set
+CONFIG_BASE_SMALL=y
 # CONFIG_EPOLL is not set
 # CONFIG_VM_EVENT_COUNTERS is not set
 # CONFIG_BLK_DEV_BSG is not set

arch/powerpc/configs/mpc885_ads_defconfig

@@ -7,7 +7,7 @@ CONFIG_VIRT_CPU_ACCOUNTING_NATIVE=y
 CONFIG_LOG_BUF_SHIFT=14
 CONFIG_EXPERT=y
 # CONFIG_ELF_CORE is not set
-# CONFIG_BASE_FULL is not set
+CONFIG_BASE_SMALL=y
 # CONFIG_FUTEX is not set
 CONFIG_PERF_EVENTS=y
 # CONFIG_VM_EVENT_COUNTERS is not set

arch/powerpc/configs/tqm8xx_defconfig

@@ -6,7 +6,7 @@ CONFIG_HIGH_RES_TIMERS=y
 CONFIG_LOG_BUF_SHIFT=14
 CONFIG_EXPERT=y
 # CONFIG_ELF_CORE is not set
-# CONFIG_BASE_FULL is not set
+CONFIG_BASE_SMALL=y
 # CONFIG_FUTEX is not set
 # CONFIG_VM_EVENT_COUNTERS is not set
 CONFIG_MODULES=y

arch/riscv/configs/nommu_k210_defconfig

@@ -11,7 +11,7 @@ CONFIG_BLK_DEV_INITRD=y
 CONFIG_CC_OPTIMIZE_FOR_SIZE=y
 # CONFIG_SYSFS_SYSCALL is not set
 # CONFIG_FHANDLE is not set
-# CONFIG_BASE_FULL is not set
+CONFIG_BASE_SMALL=y
 # CONFIG_FUTEX is not set
 # CONFIG_EPOLL is not set
 # CONFIG_SIGNALFD is not set

arch/riscv/configs/nommu_k210_sdcard_defconfig

@@ -3,7 +3,7 @@ CONFIG_LOG_BUF_SHIFT=13
 CONFIG_CC_OPTIMIZE_FOR_SIZE=y
 # CONFIG_SYSFS_SYSCALL is not set
 # CONFIG_FHANDLE is not set
-# CONFIG_BASE_FULL is not set
+CONFIG_BASE_SMALL=y
 # CONFIG_FUTEX is not set
 # CONFIG_EPOLL is not set
 # CONFIG_SIGNALFD is not set

arch/riscv/configs/nommu_virt_defconfig

@@ -10,7 +10,7 @@ CONFIG_CC_OPTIMIZE_FOR_SIZE=y
 CONFIG_EXPERT=y
 # CONFIG_SYSFS_SYSCALL is not set
 # CONFIG_FHANDLE is not set
-# CONFIG_BASE_FULL is not set
+CONFIG_BASE_SMALL=y
 # CONFIG_EPOLL is not set
 # CONFIG_SIGNALFD is not set
 # CONFIG_TIMERFD is not set

arch/sh/configs/edosk7705_defconfig

@@ -6,7 +6,7 @@
 # CONFIG_PRINTK is not set
 # CONFIG_BUG is not set
 # CONFIG_ELF_CORE is not set
-# CONFIG_BASE_FULL is not set
+CONFIG_BASE_SMALL=y
 # CONFIG_FUTEX is not set
 # CONFIG_EPOLL is not set
 # CONFIG_SIGNALFD is not set

arch/sh/configs/se7619_defconfig

@@ -4,7 +4,7 @@ CONFIG_LOG_BUF_SHIFT=14
 # CONFIG_KALLSYMS is not set
 # CONFIG_HOTPLUG is not set
 # CONFIG_ELF_CORE is not set
-# CONFIG_BASE_FULL is not set
+CONFIG_BASE_SMALL=y
 # CONFIG_FUTEX is not set
 # CONFIG_EPOLL is not set
 # CONFIG_VM_EVENT_COUNTERS is not set

arch/sh/configs/se7712_defconfig

@@ -7,7 +7,7 @@ CONFIG_LOG_BUF_SHIFT=14
 # CONFIG_CC_OPTIMIZE_FOR_SIZE is not set
 CONFIG_KALLSYMS_ALL=y
 # CONFIG_BUG is not set
-# CONFIG_BASE_FULL is not set
+CONFIG_BASE_SMALL=y
 # CONFIG_SHMEM is not set
 CONFIG_MODULES=y
 # CONFIG_BLK_DEV_BSG is not set

arch/sh/configs/se7721_defconfig

@@ -7,7 +7,7 @@ CONFIG_LOG_BUF_SHIFT=14
 # CONFIG_CC_OPTIMIZE_FOR_SIZE is not set
 CONFIG_KALLSYMS_ALL=y
 # CONFIG_BUG is not set
-# CONFIG_BASE_FULL is not set
+CONFIG_BASE_SMALL=y
 # CONFIG_SHMEM is not set
 CONFIG_MODULES=y
 # CONFIG_BLK_DEV_BSG is not set

arch/sh/configs/shmin_defconfig

@@ -5,7 +5,7 @@ CONFIG_LOG_BUF_SHIFT=14
 # CONFIG_HOTPLUG is not set
 # CONFIG_BUG is not set
 # CONFIG_ELF_CORE is not set
-# CONFIG_BASE_FULL is not set
+CONFIG_BASE_SMALL=y
 # CONFIG_FUTEX is not set
 # CONFIG_EPOLL is not set
 # CONFIG_SHMEM is not set

arch/x86/include/asm/mpspec.h

@@ -16,10 +16,10 @@ extern int pic_mode;
  * Summit or generic (i.e. installer) kernels need lots of bus entries.
  * Maximum 256 PCI busses, plus 1 ISA bus in each of 4 cabinets.
  */
-#if CONFIG_BASE_SMALL == 0
-# define MAX_MP_BUSSES		260
-#else
+#ifdef CONFIG_BASE_SMALL
 # define MAX_MP_BUSSES		32
+#else
+# define MAX_MP_BUSSES		260
 #endif
 
 #define MAX_IRQ_SOURCES		256

drivers/tty/vt/vc_screen.c

@@ -51,7 +51,7 @@
 #include <asm/unaligned.h>
 
 #define HEADER_SIZE	4u
-#define CON_BUF_SIZE (CONFIG_BASE_SMALL ? 256 : PAGE_SIZE)
+#define CON_BUF_SIZE (IS_ENABLED(CONFIG_BASE_SMALL) ? 256 : PAGE_SIZE)
 
 /*
  * Our minor space:

include/linux/threads.h

@@ -25,13 +25,13 @@
 /*
  * This controls the default maximum pid allocated to a process
  */
-#define PID_MAX_DEFAULT (CONFIG_BASE_SMALL ? 0x1000 : 0x8000)
+#define PID_MAX_DEFAULT (IS_ENABLED(CONFIG_BASE_SMALL) ? 0x1000 : 0x8000)
 
 /*
  * A maximum of 4 million PIDs should be enough for a while.
  * [NOTE: PID/TIDs are limited to 2^30 ~= 1 billion, see FUTEX_TID_MASK.]
  */
-#define PID_MAX_LIMIT (CONFIG_BASE_SMALL ? PAGE_SIZE * 8 : \
+#define PID_MAX_LIMIT (IS_ENABLED(CONFIG_BASE_SMALL) ? PAGE_SIZE * 8 : \
 	(sizeof(long) > 4 ? 4 * 1024 * 1024 : PID_MAX_DEFAULT))
 
 /*

include/linux/udp.h

@@ -24,7 +24,7 @@ static inline struct udphdr *udp_hdr(const struct sk_buff *skb)
 }
 
 #define UDP_HTABLE_SIZE_MIN_PERNET	128
-#define UDP_HTABLE_SIZE_MIN		(CONFIG_BASE_SMALL ? 128 : 256)
+#define UDP_HTABLE_SIZE_MIN		(IS_ENABLED(CONFIG_BASE_SMALL) ? 128 : 256)
 #define UDP_HTABLE_SIZE_MAX		65536
 
 static inline u32 udp_hashfn(const struct net *net, u32 num, u32 mask)

include/linux/xarray.h

@@ -1141,7 +1141,7 @@ static inline void xa_release(struct xarray *xa, unsigned long index)
  * doubled the number of slots per node, we'd get only 3 nodes per 4kB page.
  */
 #ifndef XA_CHUNK_SHIFT
-#define XA_CHUNK_SHIFT		(CONFIG_BASE_SMALL ? 4 : 6)
+#define XA_CHUNK_SHIFT		(IS_ENABLED(CONFIG_BASE_SMALL) ? 4 : 6)
 #endif
 #define XA_CHUNK_SIZE		(1UL << XA_CHUNK_SHIFT)
 #define XA_CHUNK_MASK		(XA_CHUNK_SIZE - 1)

init/Kconfig

@@ -743,8 +743,8 @@ config LOG_CPU_MAX_BUF_SHIFT
 	int "CPU kernel log buffer size contribution (13 => 8 KB, 17 => 128KB)"
 	depends on SMP
 	range 0 21
-	default 12 if !BASE_SMALL
 	default 0 if BASE_SMALL
+	default 12
 	depends on PRINTK
 	help
 	  This option allows to increase the default ring buffer size
@@ -1585,11 +1585,10 @@ config PCSPKR_PLATFORM
 	  This option allows to disable the internal PC-Speaker
 	  support, saving some memory.
 
-config BASE_FULL
-	default y
-	bool "Enable full-sized data structures for core" if EXPERT
+config BASE_SMALL
+	bool "Enable smaller-sized data structures for core" if EXPERT
 	help
-	  Disabling this option reduces the size of miscellaneous core
+	  Enabling this option reduces the size of miscellaneous core
 	  kernel data structures. This saves memory on small machines,
 	  but may reduce performance.
 
@@ -1944,11 +1943,6 @@ config RT_MUTEXES
 	bool
 	default y if PREEMPT_RT
 
-config BASE_SMALL
-	int
-	default 0 if BASE_FULL
-	default 1 if !BASE_FULL
-
 config MODULE_SIG_FORMAT
 	def_bool n
 	select SYSTEM_DATA_VERIFICATION

kernel/futex/core.c

@@ -1150,7 +1150,7 @@ static int __init futex_init(void)
 	unsigned int futex_shift;
 	unsigned long i;
 
-#if CONFIG_BASE_SMALL
+#ifdef CONFIG_BASE_SMALL
 	futex_hashsize = 16;
 #else
 	futex_hashsize = roundup_pow_of_two(256 * num_possible_cpus());

kernel/user.c

@@ -88,7 +88,7 @@ EXPORT_SYMBOL_GPL(init_user_ns);
  * when changing user ID's (ie setuid() and friends).
  */
 
-#define UIDHASH_BITS	(CONFIG_BASE_SMALL ? 3 : 7)
+#define UIDHASH_BITS	(IS_ENABLED(CONFIG_BASE_SMALL) ? 3 : 7)
 #define UIDHASH_SZ	(1 << UIDHASH_BITS)
 #define UIDHASH_MASK		(UIDHASH_SZ - 1)
 #define __uidhashfn(uid)	(((uid >> UIDHASH_BITS) + uid) & UIDHASH_MASK)

tools/testing/selftests/wireguard/qemu/kernel.config

@@ -41,7 +41,6 @@ CONFIG_KALLSYMS=y
 CONFIG_BUG=y
 CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE=y
 CONFIG_JUMP_LABEL=y
-CONFIG_BASE_FULL=y
 CONFIG_FUTEX=y
 CONFIG_SHMEM=y
 CONFIG_SLUB=y