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linux-headers: add linux/mman.h.

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Update it to 4.20-rc1

Signed-off-by: Zhang Yi <yi.z.zhang@linux.intel.com>
Message-Id: <f9346f1816b940a4231524a84d57a2cac8466ccc.1549555521.git.yi.z.zhang@linux.intel.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
This commit is contained in:
Zhang Yi 2019-02-08 18:11:00 +08:00 • committed by Eduardo Habkost
parent 0289881fb6
commit 8cf108c5d1
10 changed files with 359 additions and 0 deletions
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36
linux-headers/asm-generic/hugetlb_encode.h Normal file
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#ifndef _ASM_GENERIC_HUGETLB_ENCODE_H_
#define _ASM_GENERIC_HUGETLB_ENCODE_H_
/*
* Several system calls take a flag to request "hugetlb" huge pages.
* Without further specification, these system calls will use the
* system's default huge page size. If a system supports multiple
* huge page sizes, the desired huge page size can be specified in
* bits [26:31] of the flag arguments. The value in these 6 bits
* will encode the log2 of the huge page size.
*
* The following definitions are associated with this huge page size
* encoding in flag arguments. System call specific header files
* that use this encoding should include this file. They can then
* provide definitions based on these with their own specific prefix.
* for example:
* #define MAP_HUGE_SHIFT HUGETLB_FLAG_ENCODE_SHIFT
*/
#define HUGETLB_FLAG_ENCODE_SHIFT 26
#define HUGETLB_FLAG_ENCODE_MASK 0x3f
#define HUGETLB_FLAG_ENCODE_64KB (16 << HUGETLB_FLAG_ENCODE_SHIFT)
#define HUGETLB_FLAG_ENCODE_512KB (19 << HUGETLB_FLAG_ENCODE_SHIFT)
#define HUGETLB_FLAG_ENCODE_1MB (20 << HUGETLB_FLAG_ENCODE_SHIFT)
#define HUGETLB_FLAG_ENCODE_2MB (21 << HUGETLB_FLAG_ENCODE_SHIFT)
#define HUGETLB_FLAG_ENCODE_8MB (23 << HUGETLB_FLAG_ENCODE_SHIFT)
#define HUGETLB_FLAG_ENCODE_16MB (24 << HUGETLB_FLAG_ENCODE_SHIFT)
#define HUGETLB_FLAG_ENCODE_32MB (25 << HUGETLB_FLAG_ENCODE_SHIFT)
#define HUGETLB_FLAG_ENCODE_256MB (28 << HUGETLB_FLAG_ENCODE_SHIFT)
#define HUGETLB_FLAG_ENCODE_512MB (29 << HUGETLB_FLAG_ENCODE_SHIFT)
#define HUGETLB_FLAG_ENCODE_1GB (30 << HUGETLB_FLAG_ENCODE_SHIFT)
#define HUGETLB_FLAG_ENCODE_2GB (31 << HUGETLB_FLAG_ENCODE_SHIFT)
#define HUGETLB_FLAG_ENCODE_16GB (34 << HUGETLB_FLAG_ENCODE_SHIFT)
#endif /* _ASM_GENERIC_HUGETLB_ENCODE_H_ */