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