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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164/* SPDX-License-Identifier: GPL-2.0 */#ifndef LINUX_MM_DEBUG_H#define LINUX_MM_DEBUG_H 1
#include <linux/bug.h>#include <linux/stringify.h>
struct page;struct vm_area_struct;struct mm_struct;struct vma_iterator;struct vma_merge_struct;
void dump_page(const struct page *page, const char *reason);void dump_vma(const struct vm_area_struct *vma);void dump_mm(const struct mm_struct *mm);void dump_vmg(const struct vma_merge_struct *vmg, const char *reason);void vma_iter_dump_tree(const struct vma_iterator *vmi);
#ifdef CONFIG_DEBUG_VM#define VM_BUG_ON(cond) BUG_ON(cond)#define VM_BUG_ON_PAGE(cond, page) \ do { \ if (unlikely(cond)) { \ dump_page(page, "VM_BUG_ON_PAGE(" __stringify(cond)")");\ BUG(); \ } \ } while (0)#define VM_BUG_ON_FOLIO(cond, folio) \ do { \ if (unlikely(cond)) { \ dump_page(&folio->page, "VM_BUG_ON_FOLIO(" __stringify(cond)")");\ BUG(); \ } \ } while (0)#define VM_BUG_ON_VMA(cond, vma) \ do { \ if (unlikely(cond)) { \ dump_vma(vma); \ BUG(); \ } \ } while (0)#define VM_BUG_ON_MM(cond, mm) \ do { \ if (unlikely(cond)) { \ dump_mm(mm); \ BUG(); \ } \ } while (0)#define VM_WARN_ON_PAGE(cond, page) ({ \ int __ret_warn = !!(cond); \ \ if (unlikely(__ret_warn)) { \ dump_page(page, "VM_WARN_ON_PAGE(" __stringify(cond)")");\ WARN_ON(1); \ } \ unlikely(__ret_warn); \})#define VM_WARN_ON_ONCE_PAGE(cond, page) ({ \ static bool __section(".data..once") __warned; \ int __ret_warn_once = !!(cond); \ \ if (unlikely(__ret_warn_once && !__warned)) { \ dump_page(page, "VM_WARN_ON_ONCE_PAGE(" __stringify(cond)")");\ __warned = true; \ WARN_ON(1); \ } \ unlikely(__ret_warn_once); \})#define VM_WARN_ON_FOLIO(cond, folio) ({ \ int __ret_warn = !!(cond); \ \ if (unlikely(__ret_warn)) { \ dump_page(&folio->page, "VM_WARN_ON_FOLIO(" __stringify(cond)")");\ WARN_ON(1); \ } \ unlikely(__ret_warn); \})#define VM_WARN_ON_ONCE_FOLIO(cond, folio) ({ \ static bool __section(".data..once") __warned; \ int __ret_warn_once = !!(cond); \ \ if (unlikely(__ret_warn_once && !__warned)) { \ dump_page(&folio->page, "VM_WARN_ON_ONCE_FOLIO(" __stringify(cond)")");\ __warned = true; \ WARN_ON(1); \ } \ unlikely(__ret_warn_once); \})#define VM_WARN_ON_ONCE_MM(cond, mm) ({ \ static bool __section(".data..once") __warned; \ int __ret_warn_once = !!(cond); \ \ if (unlikely(__ret_warn_once && !__warned)) { \ dump_mm(mm); \ __warned = true; \ WARN_ON(1); \ } \ unlikely(__ret_warn_once); \})#define VM_WARN_ON_ONCE_VMA(cond, vma) ({ \ static bool __section(".data..once") __warned; \ int __ret_warn_once = !!(cond); \ \ if (unlikely(__ret_warn_once && !__warned)) { \ dump_vma(vma); \ __warned = true; \ WARN_ON(1); \ } \ unlikely(__ret_warn_once); \})#define VM_WARN_ON_VMG(cond, vmg) ({ \ int __ret_warn = !!(cond); \ \ if (unlikely(__ret_warn)) { \ dump_vmg(vmg, "VM_WARN_ON_VMG(" __stringify(cond)")"); \ WARN_ON(1); \ } \ unlikely(__ret_warn); \})
#define VM_WARN_ON(cond) (void)WARN_ON(cond)#define VM_WARN_ON_ONCE(cond) (void)WARN_ON_ONCE(cond)#define VM_WARN_ONCE(cond, format...) (void)WARN_ONCE(cond, format)#define VM_WARN(cond, format...) (void)WARN(cond, format)#else#define VM_BUG_ON(cond) BUILD_BUG_ON_INVALID(cond)#define VM_BUG_ON_PAGE(cond, page) VM_BUG_ON(cond)#define VM_BUG_ON_FOLIO(cond, folio) VM_BUG_ON(cond)#define VM_BUG_ON_VMA(cond, vma) VM_BUG_ON(cond)#define VM_BUG_ON_MM(cond, mm) VM_BUG_ON(cond)#define VM_WARN_ON(cond) BUILD_BUG_ON_INVALID(cond)#define VM_WARN_ON_ONCE(cond) BUILD_BUG_ON_INVALID(cond)#define VM_WARN_ON_PAGE(cond, page) BUILD_BUG_ON_INVALID(cond)#define VM_WARN_ON_ONCE_PAGE(cond, page) BUILD_BUG_ON_INVALID(cond)#define VM_WARN_ON_FOLIO(cond, folio) BUILD_BUG_ON_INVALID(cond)#define VM_WARN_ON_ONCE_FOLIO(cond, folio) BUILD_BUG_ON_INVALID(cond)#define VM_WARN_ON_ONCE_MM(cond, mm) BUILD_BUG_ON_INVALID(cond)#define VM_WARN_ON_ONCE_VMA(cond, vma) BUILD_BUG_ON_INVALID(cond)#define VM_WARN_ON_VMG(cond, vmg) BUILD_BUG_ON_INVALID(cond)#define VM_WARN_ONCE(cond, format...) BUILD_BUG_ON_INVALID(cond)#define VM_WARN(cond, format...) BUILD_BUG_ON_INVALID(cond)#endif /* CONFIG_DEBUG_VM */
#ifdef CONFIG_DEBUG_VM_IRQSOFF#define VM_WARN_ON_IRQS_ENABLED() WARN_ON_ONCE(!irqs_disabled())#else#define VM_WARN_ON_IRQS_ENABLED() do { } while (0)#endif
#ifdef CONFIG_DEBUG_VIRTUAL#define VIRTUAL_BUG_ON(cond) BUG_ON(cond)#else#define VIRTUAL_BUG_ON(cond) do { } while (0)#endif
#ifdef CONFIG_DEBUG_VM_PGFLAGS#define VM_BUG_ON_PGFLAGS(cond, page) VM_BUG_ON_PAGE(cond, page)#else#define VM_BUG_ON_PGFLAGS(cond, page) BUILD_BUG_ON_INVALID(cond)#endif
#endif