31c9afa6db
Very similar to VM_BUG_ON_PAGE and VM_BUG_ON_VMA, dump struct_mm when the bug is hit. [akpm@linux-foundation.org: coding-style fixes] [mhocko@suse.cz: fix build] [mhocko@suse.cz: fix build some more] [akpm@linux-foundation.org: do strange things to avoid doing strange things for the comma separators] Signed-off-by: Sasha Levin <sasha.levin@oracle.com> Cc: Dave Jones <davej@redhat.com> Signed-off-by: Michal Hocko <mhocko@suse.cz> Cc: Valdis Kletnieks <Valdis.Kletnieks@vt.edu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
58 lines
1.6 KiB
C
58 lines
1.6 KiB
C
#ifndef LINUX_MM_DEBUG_H
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#define LINUX_MM_DEBUG_H 1
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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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extern void dump_page(struct page *page, const char *reason);
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extern void dump_page_badflags(struct page *page, const char *reason,
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unsigned long badflags);
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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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#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_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(cond) WARN_ON(cond)
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#define VM_WARN_ON_ONCE(cond) WARN_ON_ONCE(cond)
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#define VM_WARN_ONCE(cond, format...) WARN_ONCE(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_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_ONCE(cond, format...) BUILD_BUG_ON_INVALID(cond)
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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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#endif
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