printk: Change type of CONFIG_BASE_SMALL to bool

CONFIG_BASE_SMALL is currently a type int but is only used as a boolean.

So, change its type to bool and adapt all usages:
CONFIG_BASE_SMALL == 0 becomes !IS_ENABLED(CONFIG_BASE_SMALL) and
CONFIG_BASE_SMALL != 0 becomes  IS_ENABLED(CONFIG_BASE_SMALL).

Reviewed-by: Petr Mladek <pmladek@suse.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Masahiro Yamada <masahiroy@kernel.org>
Signed-off-by: Yoann Congal <yoann.congal@smile.fr>
Link: https://lore.kernel.org/r/20240505080343.1471198-3-yoann.congal@smile.fr
Signed-off-by: Petr Mladek <pmladek@suse.com>

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

@@ -743,7 +743,7 @@ 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 0 if BASE_SMALL != 0
+	default 0 if BASE_SMALL
 	default 12
 	depends on PRINTK
 	help
@@ -1945,9 +1945,7 @@ config RT_MUTEXES
 	default y if PREEMPT_RT
 
 config BASE_SMALL
-	int
-	default 0 if BASE_FULL
-	default 1 if !BASE_FULL
+	def_bool !BASE_FULL
 
 config MODULE_SIG_FORMAT
 	def_bool n

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)