diff options
Diffstat (limited to 'include/linux/iommu-debug-pagealloc.h')
| -rw-r--r-- | include/linux/iommu-debug-pagealloc.h | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/include/linux/iommu-debug-pagealloc.h b/include/linux/iommu-debug-pagealloc.h new file mode 100644 index 000000000000..46c3c1f70150 --- /dev/null +++ b/include/linux/iommu-debug-pagealloc.h @@ -0,0 +1,32 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (C) 2025 - Google Inc + * Author: Mostafa Saleh <smostafa@google.com> + * IOMMU API debug page alloc sanitizer + */ + +#ifndef __LINUX_IOMMU_DEBUG_PAGEALLOC_H +#define __LINUX_IOMMU_DEBUG_PAGEALLOC_H + +#ifdef CONFIG_IOMMU_DEBUG_PAGEALLOC +DECLARE_STATIC_KEY_FALSE(iommu_debug_initialized); + +extern struct page_ext_operations page_iommu_debug_ops; + +void __iommu_debug_check_unmapped(const struct page *page, int numpages); + +static inline void iommu_debug_check_unmapped(const struct page *page, int numpages) +{ + if (static_branch_unlikely(&iommu_debug_initialized)) + __iommu_debug_check_unmapped(page, numpages); +} + +#else +static inline void iommu_debug_check_unmapped(const struct page *page, + int numpages) +{ +} + +#endif /* CONFIG_IOMMU_DEBUG_PAGEALLOC */ + +#endif /* __LINUX_IOMMU_DEBUG_PAGEALLOC_H */ |