/D/werner/TxMemory/sources/pagemap.h

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/****
 Persistent Transactional Memory v0.3
 Copyright (C) 2010 Werner Van Belle
 http://active.yellowcouch.org/

 This program is free software; you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
 the Free Software Foundation; either version 2 of the License, or
 (at your option) any later version.

 This program is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU General Public License for more details.

 You should have received a copy of the GNU General Public License
 along with this program; if not, write to the Free Software
 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
****/
#ifndef __loaded__pagemap_h__
#define __loaded__pagemap_h__
using namespace std;
#line 1 "pagemap.h++"
#include <stdint.h>
/* Taken from the kernel documentation page-types.c
 * pagemap kernel ABI bits
 */

#define PM_ENTRY_BYTES      sizeof(uint64_t)
#define PM_STATUS_BITS      3
#define PM_STATUS_OFFSET    (64 - PM_STATUS_BITS)
#define PM_STATUS_MASK      (((1LL << PM_STATUS_BITS) - 1) << PM_STATUS_OFFSET)
#define PM_STATUS(nr)       (((nr) << PM_STATUS_OFFSET) & PM_STATUS_MASK)
#define PM_PSHIFT_BITS      6
#define PM_PSHIFT_OFFSET    (PM_STATUS_OFFSET - PM_PSHIFT_BITS)
#define PM_PSHIFT_MASK      (((1LL << PM_PSHIFT_BITS) - 1) << PM_PSHIFT_OFFSET)
#define PM_PSHIFT(x)        (((uint64_t) (x) << PM_PSHIFT_OFFSET) & PM_PSHIFT_MASK)
#define PM_PFRAME_MASK      ((1LL << PM_PSHIFT_OFFSET) - 1)
#define PM_PFRAME(x)        ((x) & PM_PFRAME_MASK)

#define PM_PRESENT          PM_STATUS(4LL)
#define PM_SWAP             PM_STATUS(2LL)


#define KPF_LOCKED              0
#define KPF_ERROR               1
#define KPF_REFERENCED          2
#define KPF_UPTODATE            3
#define KPF_DIRTY               4
#define KPF_LRU                 5
#define KPF_ACTIVE              6
#define KPF_SLAB                7
#define KPF_WRITEBACK           8
#define KPF_RECLAIM             9
#define KPF_BUDDY               10

/* [11-20] new additions in 2.6.31 */
#define KPF_MMAP                11
#define KPF_ANON                12
#define KPF_SWAPCACHE           13
#define KPF_SWAPBACKED          14
#define KPF_COMPOUND_HEAD       15
#define KPF_COMPOUND_TAIL       16
#define KPF_HUGE                17
#define KPF_UNEVICTABLE         18
#define KPF_HWPOISON            19
#define KPF_NOPAGE              20
#define KPF_KSM                 21

/* [32-] kernel hacking assistances */
#define KPF_RESERVED            32
#define KPF_MLOCKED             33
#define KPF_MAPPEDTODISK        34
#define KPF_PRIVATE             35
#define KPF_PRIVATE_2           36
#define KPF_OWNER_PRIVATE       37
#define KPF_ARCH                38
#define KPF_UNCACHED            39

/* [48-] take some arbitrary free slots for expanding overloaded flags
 * not part of kernel API
 */
#define KPF_READAHEAD           48
#define KPF_SLOB_FREE           49
#define KPF_SLUB_FROZEN         50
#define KPF_SLUB_DEBUG          51
#endif // __loaded__pagemap_h__

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