diff options
Diffstat (limited to 'drivers/staging/zcache/ramster/ramster.h')
| -rw-r--r-- | drivers/staging/zcache/ramster/ramster.h | 161 |
1 files changed, 0 insertions, 161 deletions
diff --git a/drivers/staging/zcache/ramster/ramster.h b/drivers/staging/zcache/ramster/ramster.h deleted file mode 100644 index 6d41a7a772e3..000000000000 --- a/drivers/staging/zcache/ramster/ramster.h +++ /dev/null @@ -1,161 +0,0 @@ -/* - * ramster.h - * - * Peer-to-peer transcendent memory - * - * Copyright (c) 2009-2012, Dan Magenheimer, Oracle Corp. - */ - -#ifndef _RAMSTER_RAMSTER_H_ -#define _RAMSTER_RAMSTER_H_ - -#include "../tmem.h" - -enum ramster_remotify_op { - RAMSTER_REMOTIFY_FLUSH_PAGE, - RAMSTER_REMOTIFY_FLUSH_OBJ, -}; - -struct ramster_remotify_hdr { - enum ramster_remotify_op op; - struct list_head list; -}; - -struct flushlist_node { - struct ramster_remotify_hdr rem_op; - struct tmem_xhandle xh; -}; - -struct ramster_preload { - struct flushlist_node *flnode; -}; - -union remotify_list_node { - struct ramster_remotify_hdr rem_op; - struct { - struct ramster_remotify_hdr rem_op; - struct tmem_handle th; - } zbud_hdr; - struct flushlist_node flist; -}; - -/* - * format of remote pampd: - * bit 0 is reserved for zbud (in-page buddy selection) - * bit 1 == intransit - * bit 2 == is_remote... if this bit is set, then - * bit 3-10 == remotenode - * bit 11-23 == size - * bit 24-31 == cksum - */ -#define FAKE_PAMPD_INTRANSIT_BITS 1 -#define FAKE_PAMPD_ISREMOTE_BITS 1 -#define FAKE_PAMPD_REMOTENODE_BITS 8 -#define FAKE_PAMPD_REMOTESIZE_BITS 13 -#define FAKE_PAMPD_CHECKSUM_BITS 8 - -#define FAKE_PAMPD_INTRANSIT_SHIFT 1 -#define FAKE_PAMPD_ISREMOTE_SHIFT (FAKE_PAMPD_INTRANSIT_SHIFT + \ - FAKE_PAMPD_INTRANSIT_BITS) -#define FAKE_PAMPD_REMOTENODE_SHIFT (FAKE_PAMPD_ISREMOTE_SHIFT + \ - FAKE_PAMPD_ISREMOTE_BITS) -#define FAKE_PAMPD_REMOTESIZE_SHIFT (FAKE_PAMPD_REMOTENODE_SHIFT + \ - FAKE_PAMPD_REMOTENODE_BITS) -#define FAKE_PAMPD_CHECKSUM_SHIFT (FAKE_PAMPD_REMOTESIZE_SHIFT + \ - FAKE_PAMPD_REMOTESIZE_BITS) - -#define FAKE_PAMPD_MASK(x) ((1UL << (x)) - 1) - -static inline void *pampd_make_remote(int remotenode, size_t size, - unsigned char cksum) -{ - unsigned long fake_pampd = 0; - fake_pampd |= 1UL << FAKE_PAMPD_ISREMOTE_SHIFT; - fake_pampd |= ((unsigned long)remotenode & - FAKE_PAMPD_MASK(FAKE_PAMPD_REMOTENODE_BITS)) << - FAKE_PAMPD_REMOTENODE_SHIFT; - fake_pampd |= ((unsigned long)size & - FAKE_PAMPD_MASK(FAKE_PAMPD_REMOTESIZE_BITS)) << - FAKE_PAMPD_REMOTESIZE_SHIFT; - fake_pampd |= ((unsigned long)cksum & - FAKE_PAMPD_MASK(FAKE_PAMPD_CHECKSUM_BITS)) << - FAKE_PAMPD_CHECKSUM_SHIFT; - return (void *)fake_pampd; -} - -static inline unsigned int pampd_remote_node(void *pampd) -{ - unsigned long fake_pampd = (unsigned long)pampd; - return (fake_pampd >> FAKE_PAMPD_REMOTENODE_SHIFT) & - FAKE_PAMPD_MASK(FAKE_PAMPD_REMOTENODE_BITS); -} - -static inline unsigned int pampd_remote_size(void *pampd) -{ - unsigned long fake_pampd = (unsigned long)pampd; - return (fake_pampd >> FAKE_PAMPD_REMOTESIZE_SHIFT) & - FAKE_PAMPD_MASK(FAKE_PAMPD_REMOTESIZE_BITS); -} - -static inline unsigned char pampd_remote_cksum(void *pampd) -{ - unsigned long fake_pampd = (unsigned long)pampd; - return (fake_pampd >> FAKE_PAMPD_CHECKSUM_SHIFT) & - FAKE_PAMPD_MASK(FAKE_PAMPD_CHECKSUM_BITS); -} - -static inline bool pampd_is_remote(void *pampd) -{ - unsigned long fake_pampd = (unsigned long)pampd; - return (fake_pampd >> FAKE_PAMPD_ISREMOTE_SHIFT) & - FAKE_PAMPD_MASK(FAKE_PAMPD_ISREMOTE_BITS); -} - -static inline bool pampd_is_intransit(void *pampd) -{ - unsigned long fake_pampd = (unsigned long)pampd; - return (fake_pampd >> FAKE_PAMPD_INTRANSIT_SHIFT) & - FAKE_PAMPD_MASK(FAKE_PAMPD_INTRANSIT_BITS); -} - -/* note that it is a BUG for intransit to be set without isremote also set */ -static inline void *pampd_mark_intransit(void *pampd) -{ - unsigned long fake_pampd = (unsigned long)pampd; - - fake_pampd |= 1UL << FAKE_PAMPD_ISREMOTE_SHIFT; - fake_pampd |= 1UL << FAKE_PAMPD_INTRANSIT_SHIFT; - return (void *)fake_pampd; -} - -static inline void *pampd_mask_intransit_and_remote(void *marked_pampd) -{ - unsigned long pampd = (unsigned long)marked_pampd; - - pampd &= ~(1UL << FAKE_PAMPD_INTRANSIT_SHIFT); - pampd &= ~(1UL << FAKE_PAMPD_ISREMOTE_SHIFT); - return (void *)pampd; -} - -extern int r2net_remote_async_get(struct tmem_xhandle *, - bool, int, size_t, uint8_t, void *extra); -extern int r2net_remote_put(struct tmem_xhandle *, char *, size_t, - bool, int *); -extern int r2net_remote_flush(struct tmem_xhandle *, int); -extern int r2net_remote_flush_object(struct tmem_xhandle *, int); -extern int r2net_register_handlers(void); -extern int r2net_remote_target_node_set(int); - -extern int ramster_remotify_pageframe(bool); -extern void ramster_init(bool, bool, bool, bool); -extern void ramster_register_pamops(struct tmem_pamops *); -extern int ramster_localify(int, struct tmem_oid *oidp, uint32_t, char *, - unsigned int, void *); -extern void *ramster_pampd_free(void *, struct tmem_pool *, struct tmem_oid *, - uint32_t, bool); -extern void ramster_count_foreign_pages(bool, int); -extern int ramster_do_preload_flnode(struct tmem_pool *); -extern void ramster_cpu_up(int); -extern void ramster_cpu_down(int); - -#endif /* _RAMSTER_RAMSTER_H */ |