diff options
| author | Robert Love <rlove@google.com> | 2008-10-14 10:00:47 -0400 |
|---|---|---|
| committer | Arve Hjønnevåg <arve@android.com> | 2009-04-07 16:43:10 -0700 |
| commit | 1cf25a181bf85c16a030374e6256fb078ba70ba6 (patch) | |
| tree | 07273a608d78896f9307e2670b392dd7bfceb548 /include | |
| parent | 6011858e8f7f8063b2e3e6f730006dbeaec63994 (diff) | |
ashmem for 2.6.27.
Forward port of ashmem to 2.6.27.
Signed-off-by: Robert Love <rlove@google.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/ashmem.h | 48 | ||||
| -rw-r--r-- | include/linux/mm.h | 3 |
2 files changed, 50 insertions, 1 deletions
diff --git a/include/linux/ashmem.h b/include/linux/ashmem.h new file mode 100644 index 000000000000..1976b10ef93e --- /dev/null +++ b/include/linux/ashmem.h @@ -0,0 +1,48 @@ +/* + * include/linux/ashmem.h + * + * Copyright 2008 Google Inc. + * Author: Robert Love + * + * This file is dual licensed. It may be redistributed and/or modified + * under the terms of the Apache 2.0 License OR version 2 of the GNU + * General Public License. + */ + +#ifndef _LINUX_ASHMEM_H +#define _LINUX_ASHMEM_H + +#include <linux/limits.h> +#include <linux/ioctl.h> + +#define ASHMEM_NAME_LEN 256 + +#define ASHMEM_NAME_DEF "dev/ashmem" + +/* Return values from ASHMEM_PIN: Was the mapping purged while unpinned? */ +#define ASHMEM_NOT_PURGED 0 +#define ASHMEM_WAS_PURGED 1 + +/* Return values from ASHMEM_GET_PIN_STATUS: Is the mapping pinned? */ +#define ASHMEM_IS_UNPINNED 0 +#define ASHMEM_IS_PINNED 1 + +struct ashmem_pin { + __u32 offset; /* offset into region, in bytes, page-aligned */ + __u32 len; /* length forward from offset, in bytes, page-aligned */ +}; + +#define __ASHMEMIOC 0x77 + +#define ASHMEM_SET_NAME _IOW(__ASHMEMIOC, 1, char[ASHMEM_NAME_LEN]) +#define ASHMEM_GET_NAME _IOR(__ASHMEMIOC, 2, char[ASHMEM_NAME_LEN]) +#define ASHMEM_SET_SIZE _IOW(__ASHMEMIOC, 3, size_t) +#define ASHMEM_GET_SIZE _IO(__ASHMEMIOC, 4) +#define ASHMEM_SET_PROT_MASK _IOW(__ASHMEMIOC, 5, unsigned long) +#define ASHMEM_GET_PROT_MASK _IO(__ASHMEMIOC, 6) +#define ASHMEM_PIN _IOW(__ASHMEMIOC, 7, struct ashmem_pin) +#define ASHMEM_UNPIN _IOW(__ASHMEMIOC, 8, struct ashmem_pin) +#define ASHMEM_GET_PIN_STATUS _IO(__ASHMEMIOC, 9) +#define ASHMEM_PURGE_ALL_CACHES _IO(__ASHMEMIOC, 10) + +#endif /* _LINUX_ASHMEM_H */ diff --git a/include/linux/mm.h b/include/linux/mm.h index 065cdf8c09fb..32c85d517fc9 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -724,8 +724,9 @@ static inline int shmem_lock(struct file *file, int lock, return 0; } #endif -struct file *shmem_file_setup(char *name, loff_t size, unsigned long flags); +struct file *shmem_file_setup(char *name, loff_t size, unsigned long flags); +void shmem_set_file(struct vm_area_struct *vma, struct file *file); int shmem_zero_setup(struct vm_area_struct *); #ifndef CONFIG_MMU |