forked from mirrors/linux
b3a3203309
Now that __dump_page() takes a const argument, we can make dump_page() take a const struct page too. Link: https://lkml.kernel.org/r/20240227192337.757313-6-willy@infradead.org Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Reviewed-by: David Hildenbrand <david@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
129 lines
3.9 KiB
C
129 lines
3.9 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef LINUX_MM_DEBUG_H
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#define LINUX_MM_DEBUG_H 1
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#include <linux/bug.h>
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#include <linux/stringify.h>
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struct page;
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struct vm_area_struct;
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struct mm_struct;
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struct vma_iterator;
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void dump_page(const struct page *page, const char *reason);
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void dump_vma(const struct vm_area_struct *vma);
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void dump_mm(const struct mm_struct *mm);
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void vma_iter_dump_tree(const struct vma_iterator *vmi);
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#ifdef CONFIG_DEBUG_VM
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#define VM_BUG_ON(cond) BUG_ON(cond)
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#define VM_BUG_ON_PAGE(cond, page) \
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do { \
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if (unlikely(cond)) { \
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dump_page(page, "VM_BUG_ON_PAGE(" __stringify(cond)")");\
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BUG(); \
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} \
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} while (0)
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#define VM_BUG_ON_FOLIO(cond, folio) \
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do { \
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if (unlikely(cond)) { \
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dump_page(&folio->page, "VM_BUG_ON_FOLIO(" __stringify(cond)")");\
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BUG(); \
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} \
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} while (0)
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#define VM_BUG_ON_VMA(cond, vma) \
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do { \
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if (unlikely(cond)) { \
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dump_vma(vma); \
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BUG(); \
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} \
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} while (0)
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#define VM_BUG_ON_MM(cond, mm) \
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do { \
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if (unlikely(cond)) { \
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dump_mm(mm); \
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BUG(); \
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} \
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} while (0)
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#define VM_WARN_ON_ONCE_PAGE(cond, page) ({ \
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static bool __section(".data.once") __warned; \
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int __ret_warn_once = !!(cond); \
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\
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if (unlikely(__ret_warn_once && !__warned)) { \
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dump_page(page, "VM_WARN_ON_ONCE_PAGE(" __stringify(cond)")");\
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__warned = true; \
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WARN_ON(1); \
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} \
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unlikely(__ret_warn_once); \
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})
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#define VM_WARN_ON_FOLIO(cond, folio) ({ \
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int __ret_warn = !!(cond); \
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\
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if (unlikely(__ret_warn)) { \
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dump_page(&folio->page, "VM_WARN_ON_FOLIO(" __stringify(cond)")");\
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WARN_ON(1); \
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} \
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unlikely(__ret_warn); \
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})
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#define VM_WARN_ON_ONCE_FOLIO(cond, folio) ({ \
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static bool __section(".data.once") __warned; \
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int __ret_warn_once = !!(cond); \
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\
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if (unlikely(__ret_warn_once && !__warned)) { \
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dump_page(&folio->page, "VM_WARN_ON_ONCE_FOLIO(" __stringify(cond)")");\
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__warned = true; \
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WARN_ON(1); \
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} \
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unlikely(__ret_warn_once); \
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})
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#define VM_WARN_ON_ONCE_MM(cond, mm) ({ \
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static bool __section(".data.once") __warned; \
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int __ret_warn_once = !!(cond); \
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\
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if (unlikely(__ret_warn_once && !__warned)) { \
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dump_mm(mm); \
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__warned = true; \
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WARN_ON(1); \
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} \
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unlikely(__ret_warn_once); \
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})
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#define VM_WARN_ON(cond) (void)WARN_ON(cond)
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#define VM_WARN_ON_ONCE(cond) (void)WARN_ON_ONCE(cond)
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#define VM_WARN_ONCE(cond, format...) (void)WARN_ONCE(cond, format)
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#define VM_WARN(cond, format...) (void)WARN(cond, format)
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#else
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#define VM_BUG_ON(cond) BUILD_BUG_ON_INVALID(cond)
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#define VM_BUG_ON_PAGE(cond, page) VM_BUG_ON(cond)
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#define VM_BUG_ON_FOLIO(cond, folio) VM_BUG_ON(cond)
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#define VM_BUG_ON_VMA(cond, vma) VM_BUG_ON(cond)
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#define VM_BUG_ON_MM(cond, mm) VM_BUG_ON(cond)
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#define VM_WARN_ON(cond) BUILD_BUG_ON_INVALID(cond)
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#define VM_WARN_ON_ONCE(cond) BUILD_BUG_ON_INVALID(cond)
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#define VM_WARN_ON_ONCE_PAGE(cond, page) BUILD_BUG_ON_INVALID(cond)
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#define VM_WARN_ON_FOLIO(cond, folio) BUILD_BUG_ON_INVALID(cond)
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#define VM_WARN_ON_ONCE_FOLIO(cond, folio) BUILD_BUG_ON_INVALID(cond)
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#define VM_WARN_ON_ONCE_MM(cond, mm) BUILD_BUG_ON_INVALID(cond)
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#define VM_WARN_ONCE(cond, format...) BUILD_BUG_ON_INVALID(cond)
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#define VM_WARN(cond, format...) BUILD_BUG_ON_INVALID(cond)
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#endif
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#ifdef CONFIG_DEBUG_VM_IRQSOFF
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#define VM_WARN_ON_IRQS_ENABLED() WARN_ON_ONCE(!irqs_disabled())
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#else
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#define VM_WARN_ON_IRQS_ENABLED() do { } while (0)
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#endif
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#ifdef CONFIG_DEBUG_VIRTUAL
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#define VIRTUAL_BUG_ON(cond) BUG_ON(cond)
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#else
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#define VIRTUAL_BUG_ON(cond) do { } while (0)
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#endif
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#ifdef CONFIG_DEBUG_VM_PGFLAGS
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#define VM_BUG_ON_PGFLAGS(cond, page) VM_BUG_ON_PAGE(cond, page)
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#else
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#define VM_BUG_ON_PGFLAGS(cond, page) BUILD_BUG_ON_INVALID(cond)
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#endif
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#endif
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