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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ASM_GENERIC_BUG_H
#define _ASM_GENERIC_BUG_H

#include <linux/compiler.h>

#define CUT_HERE		"------------[ cut here ]------------\n"

#ifdef CONFIG_GENERIC_BUG
#define BUGFLAG_WARNING		(1 << 0)
#define BUGFLAG_ONCE		(1 << 1)
#define BUGFLAG_DONE		(1 << 2)
#define BUGFLAG_TAINT(taint)	((taint) << 8)
#define BUG_GET_TAINT(bug)	((bug)->flags >> 8)
#endif

#ifndef __ASSEMBLY__
#include <linux/kernel.h>

#ifdef CONFIG_BUG

#ifdef CONFIG_GENERIC_BUG
struct bug_entry {
#ifndef CONFIG_GENERIC_BUG_RELATIVE_POINTERS
	unsigned long	bug_addr;
#else
	signed int	bug_addr_disp;
#endif
#ifdef CONFIG_DEBUG_BUGVERBOSE
#ifndef CONFIG_GENERIC_BUG_RELATIVE_POINTERS
	const char	*file;
#else
	signed int	file_disp;
#endif
	unsigned short	line;
#endif
	unsigned short	flags;
};
#endif	/* CONFIG_GENERIC_BUG */

/*
 * Don't use BUG() or BUG_ON() unless there's really no way out; one
 * example might be detecting data structure corruption in the middle
 * of an operation that can't be backed out of.  If the (sub)system
 * can somehow continue operating, perhaps with reduced functionality,
 * it's probably not BUG-worthy.
 *
 * If you're tempted to BUG(), think again:  is completely giving up
 * really the *only* solution?  There are usually better options, where
 * users don't need to reboot ASAP and can mostly shut down cleanly.
 */
#ifndef HAVE_ARCH_BUG
#define BUG() do { \
	printk("BUG: failure at %s:%d/%s()!\n", __FILE__, __LINE__, __func__); \
	barrier_before_unreachable(); \
	panic("BUG!"); \
} while (0)
#endif

#ifndef HAVE_ARCH_BUG_ON
#define BUG_ON(condition) do { if (unlikely(condition)) BUG(); } while (0)
#endif

#ifdef __WARN_FLAGS
#define __WARN_TAINT(taint)		__WARN_FLAGS(BUGFLAG_TAINT(taint))
#define __WARN_ONCE_TAINT(taint)	__WARN_FLAGS(BUGFLAG_ONCE|BUGFLAG_TAINT(taint))

#define WARN_ON_ONCE(condition) ({				\
	int __ret_warn_on = !!(condition);			\
	if (unlikely(__ret_warn_on))				\
		__WARN_ONCE_TAINT(TAINT_WARN);			\
	unlikely(__ret_warn_on);				\
})
#endif

/*
 * WARN(), WARN_ON(), WARN_ON_ONCE, and so on can be used to report
 * significant issues that need prompt attention if they should ever
 * appear at runtime.  Use the versions with printk format strings
 * to provide better diagnostics.
 */
#ifndef __WARN_TAINT
extern __printf(3, 4)
void warn_slowpath_fmt(const char *file, const int line,
		       const char *fmt, ...);
extern __printf(4, 5)
void warn_slowpath_fmt_taint(const char *file, const int line, unsigned taint,
			     const char *fmt, ...);
extern void warn_slowpath_null(const char *file, const int line);
#define WANT_WARN_ON_SLOWPATH
#define __WARN()		warn_slowpath_null(__FILE__, __LINE__)
#define __WARN_printf(arg...)	warn_slowpath_fmt(__FILE__, __LINE__, arg)
#define __WARN_printf_taint(taint, arg...)				\
	warn_slowpath_fmt_taint(__FILE__, __LINE__, taint, arg)
#else
extern __printf(1, 2) void __warn_printk(const char *fmt, ...);
#define __WARN() do { \
	printk(KERN_WARNING CUT_HERE); __WARN_TAINT(TAINT_WARN); \
} while (0)
#define __WARN_printf(arg...)	__WARN_printf_taint(TAINT_WARN, arg)
#define __WARN_printf_taint(taint, arg...)				\
	do { __warn_printk(arg); __WARN_TAINT(taint); } while (0)
#endif

/* used internally by panic.c */
struct warn_args;
struct pt_regs;

void __warn(const char *file, int line, void *caller, unsigned taint,
	    struct pt_regs *regs, struct warn_args *args);

#ifndef WARN_ON
#define WARN_ON(condition) ({						\
	int __ret_warn_on = !!(condition);				\
	if (unlikely(__ret_warn_on))					\
		__WARN();						\
	unlikely(__ret_warn_on);					\
})
#endif

#ifndef WARN
#define WARN(condition, format...) ({					\
	int __ret_warn_on = !!(condition);				\
	if (unlikely(__ret_warn_on))					\
		__WARN_printf(format);					\
	unlikely(__ret_warn_on);					\
})
#endif

#define WARN_TAINT(condition, taint, format...) ({			\
	int __ret_warn_on = !!(condition);				\
	if (unlikely(__ret_warn_on))					\
		__WARN_printf_taint(taint, format);			\
	unlikely(__ret_warn_on);					\
})

#ifndef WARN_ON_ONCE
#define WARN_ON_ONCE(condition)	({				\
	static bool __section(.data.once) __warned;		\
	int __ret_warn_once = !!(condition);			\
								\
	if (unlikely(__ret_warn_once && !__warned)) {		\
		__warned = true;				\
		WARN_ON(1);					\
	}							\
	unlikely(__ret_warn_once);				\
})
#endif

#define WARN_ONCE(condition, format...)	({			\
	static bool __section(.data.once) __warned;		\
	int __ret_warn_once = !!(condition);			\
								\
	if (unlikely(__ret_warn_once && !__warned)) {		\
		__warned = true;				\
		WARN(1, format);				\
	}							\
	unlikely(__ret_warn_once);				\
})

#define WARN_TAINT_ONCE(condition, taint, format...)	({	\
	static bool __section(.data.once) __warned;		\
	int __ret_warn_once = !!(condition);			\
								\
	if (unlikely(__ret_warn_once && !__warned)) {		\
		__warned = true;				\
		WARN_TAINT(1, taint, format);			\
	}							\
	unlikely(__ret_warn_once);				\
})

#else /* !CONFIG_BUG */
#ifndef HAVE_ARCH_BUG
#define BUG() do {} while (1)
#endif

#ifndef HAVE_ARCH_BUG_ON
#define BUG_ON(condition) do { if (condition) BUG(); } while (0)
#endif

#ifndef HAVE_ARCH_WARN_ON
#define WARN_ON(condition) ({						\
	int __ret_warn_on = !!(condition);				\
	unlikely(__ret_warn_on);					\
})
#endif

#ifndef WARN
#define WARN(condition, format...) ({					\
	int __ret_warn_on = !!(condition);				\
	no_printk(format);						\
	unlikely(__ret_warn_on);					\
})
#endif

#define WARN_ON_ONCE(condition) WARN_ON(condition)
#define WARN_ONCE(condition, format...) WARN(condition, format)
#define WARN_TAINT(condition, taint, format...) WARN(condition, format)
#define WARN_TAINT_ONCE(condition, taint, format...) WARN(condition, format)

#endif

/*
 * WARN_ON_SMP() is for cases that the warning is either
 * meaningless for !SMP or may even cause failures.
 * This is usually used for cases that we have
 * WARN_ON(!spin_is_locked(&lock)) checks, as spin_is_locked()
 * returns 0 for uniprocessor settings.
 * It can also be used with values that are only defined
 * on SMP:
 *
 * struct foo {
 *  [...]
 * #ifdef CONFIG_SMP
 *	int bar;
 * #endif
 * };
 *
 * void func(struct foo *zoot)
 * {
 *	WARN_ON_SMP(!zoot->bar);
 *
 * For CONFIG_SMP, WARN_ON_SMP() should act the same as WARN_ON(),
 * and should be a nop and return false for uniprocessor.
 *
 * if (WARN_ON_SMP(x)) returns true only when CONFIG_SMP is set
 * and x is true.
 */
#ifdef CONFIG_SMP
# define WARN_ON_SMP(x)			WARN_ON(x)
#else
/*
 * Use of ({0;}) because WARN_ON_SMP(x) may be used either as
 * a stand alone line statement or as a condition in an if ()
 * statement.
 * A simple "0" would cause gcc to give a "statement has no effect"
 * warning.
 */
# define WARN_ON_SMP(x)			({0;})
#endif

#endif /* __ASSEMBLY__ */

#endif

Filemanager

Name Type Size Permission Actions
bitops Folder 0755
4level-fixup.h File 1.07 KB 0644
5level-fixup.h File 1.15 KB 0644
asm-offsets.h File 35 B 0644
asm-prototypes.h File 507 B 0644
atomic-long.h File 7.09 KB 0644
atomic.h File 5.11 KB 0644
atomic64.h File 2.26 KB 0644
audit_change_attr.h File 484 B 0644
audit_dir_write.h File 500 B 0644
audit_read.h File 241 B 0644
audit_signal.h File 36 B 0644
audit_write.h File 461 B 0644
barrier.h File 6.01 KB 0644
bitops.h File 1.09 KB 0644
bitsperlong.h File 592 B 0644
bug.h File 6.6 KB 0644
bugs.h File 267 B 0644
cache.h File 384 B 0644
cacheflush.h File 1.31 KB 0644
checksum.h File 2.27 KB 0644
clkdev.h File 706 B 0644
cmpxchg-local.h File 1.43 KB 0644
cmpxchg.h File 2.23 KB 0644
current.h File 256 B 0644
delay.h File 1.13 KB 0644
device.h File 245 B 0644
div64.h File 7.28 KB 0644
dma-contiguous.h File 238 B 0644
dma.h File 553 B 0644
early_ioremap.h File 1.66 KB 0644
emergency-restart.h File 248 B 0644
exec.h File 697 B 0644
export.h File 2.2 KB 0644
extable.h File 802 B 0644
fb.h File 271 B 0644
fixmap.h File 2.84 KB 0644
ftrace.h File 460 B 0644
futex.h File 2.88 KB 0644
getorder.h File 1.22 KB 0644
gpio.h File 4.45 KB 0644
hardirq.h File 532 B 0644
hugetlb.h File 845 B 0644
hw_irq.h File 270 B 0644
ide_iops.h File 791 B 0644
int-ll64.h File 932 B 0644
io.h File 20.39 KB 0644
ioctl.h File 506 B 0644
iomap.h File 3.16 KB 0644
irq.h File 403 B 0644
irq_regs.h File 980 B 0644
irq_work.h File 194 B 0644
irqflags.h File 1.51 KB 0644
kdebug.h File 182 B 0644
kmap_types.h File 198 B 0644
kprobes.h File 868 B 0644
kvm_para.h File 480 B 0644
linkage.h File 225 B 0644
local.h File 2.23 KB 0644
local64.h File 3.8 KB 0644
mcs_spinlock.h File 260 B 0644
memory_model.h File 2.16 KB 0644
mm-arch-hooks.h File 388 B 0644
mm_hooks.h File 885 B 0644
mmu.h File 449 B 0644
mmu_context.h File 881 B 0644
module.h File 1.09 KB 0644
msi.h File 838 B 0644
page.h File 2.4 KB 0644
param.h File 367 B 0644
parport.h File 604 B 0644
pci.h File 581 B 0644
pci_iomap.h File 1.96 KB 0644
percpu.h File 12.72 KB 0644
pgalloc.h File 342 B 0644
pgtable-nop4d-hack.h File 1.86 KB 0644
pgtable-nop4d.h File 1.64 KB 0644
pgtable-nopmd.h File 1.9 KB 0644
pgtable-nopud.h File 1.97 KB 0644
pgtable.h File 29.5 KB 0644
preempt.h File 1.94 KB 0644
ptrace.h File 1.58 KB 0644
qrwlock.h File 3.78 KB 0644
qrwlock_types.h File 655 B 0644
qspinlock.h File 3.67 KB 0644
qspinlock_types.h File 2.77 KB 0644
resource.h File 1.07 KB 0644
rwsem.h File 3.21 KB 0644
seccomp.h File 1.3 KB 0644
sections.h File 4.8 KB 0644
segment.h File 249 B 0644
serial.h File 345 B 0644
set_memory.h File 362 B 0644
signal.h File 308 B 0644
simd.h File 436 B 0644
sizes.h File 78 B 0644
spinlock.h File 329 B 0644
statfs.h File 169 B 0644
string.h File 281 B 0644
switch_to.h File 992 B 0644
syscall.h File 6.18 KB 0644
syscalls.h File 739 B 0644
termios-base.h File 2.11 KB 0644
termios.h File 2.81 KB 0644
timex.h File 508 B 0644
tlb.h File 9.4 KB 0644
tlbflush.h File 485 B 0644
topology.h File 2.18 KB 0644
trace_clock.h File 391 B 0644
uaccess.h File 5.22 KB 0644
unaligned.h File 1.05 KB 0644
unistd.h File 318 B 0644
user.h File 242 B 0644
vga.h File 587 B 0644
vmlinux.lds.h File 29.17 KB 0644
vtime.h File 52 B 0644
word-at-a-time.h File 2.75 KB 0644
xor.h File 13.63 KB 0644