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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
| commit | 5d1646d90e1f2cceb9f0828f4b28318cd0ec7744 (patch) | |
| tree | a94efe259b9009378be6d90eb30d2b019d95c194 /mm/cma.h | |
| parent | Initial commit. (diff) | |
| download | linux-5d1646d90e1f2cceb9f0828f4b28318cd0ec7744.tar.xz linux-5d1646d90e1f2cceb9f0828f4b28318cd0ec7744.zip | |
Adding upstream version 5.10.209.upstream/5.10.209upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'mm/cma.h')
| -rw-r--r-- | mm/cma.h | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/mm/cma.h b/mm/cma.h new file mode 100644 index 000000000..42ae082cb --- /dev/null +++ b/mm/cma.h @@ -0,0 +1,29 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef __MM_CMA_H__ +#define __MM_CMA_H__ + +#include <linux/debugfs.h> + +struct cma { + unsigned long base_pfn; + unsigned long count; + unsigned long *bitmap; + unsigned int order_per_bit; /* Order of pages represented by one bit */ + struct mutex lock; +#ifdef CONFIG_CMA_DEBUGFS + struct hlist_head mem_head; + spinlock_t mem_head_lock; + struct debugfs_u32_array dfs_bitmap; +#endif + char name[CMA_MAX_NAME]; +}; + +extern struct cma cma_areas[MAX_CMA_AREAS]; +extern unsigned cma_area_count; + +static inline unsigned long cma_bitmap_maxno(struct cma *cma) +{ + return cma->count >> cma->order_per_bit; +} + +#endif |