diff options
Diffstat (limited to 'sys/mips/include/pmap.h')
| -rw-r--r-- | sys/mips/include/pmap.h | 26 |
1 files changed, 21 insertions, 5 deletions
diff --git a/sys/mips/include/pmap.h b/sys/mips/include/pmap.h index e10212b..e75ccb7 100644 --- a/sys/mips/include/pmap.h +++ b/sys/mips/include/pmap.h @@ -66,9 +66,9 @@ * Pmap stuff */ struct pv_entry; +struct pv_chunk; struct md_page { - int pv_list_count; int pv_flags; TAILQ_HEAD(, pv_entry) pv_list; }; @@ -82,8 +82,7 @@ struct md_page { struct pmap { pd_entry_t *pm_segtab; /* KVA of segment table */ - TAILQ_HEAD(, pv_entry) pm_pvlist; /* list of mappings in - * pmap */ + TAILQ_HEAD(, pv_chunk) pm_pvchunk; /* list of mappings in pmap */ cpuset_t pm_active; /* active on cpus */ struct { u_int32_t asid:ASID_BITS; /* TLB address space tag */ @@ -121,13 +120,30 @@ extern struct pmap kernel_pmap_store; * mappings of that page. An entry is a pv_entry_t, the list is pv_table. */ typedef struct pv_entry { - pmap_t pv_pmap; /* pmap where mapping lies */ vm_offset_t pv_va; /* virtual address for mapping */ TAILQ_ENTRY(pv_entry) pv_list; - TAILQ_ENTRY(pv_entry) pv_plist; } *pv_entry_t; /* + * pv_entries are allocated in chunks per-process. This avoids the + * need to track per-pmap assignments. + */ +#ifdef __mips_n64 +#define _NPCM 3 +#define _NPCPV 168 +#else +#define _NPCM 11 +#define _NPCPV 336 +#endif +struct pv_chunk { + pmap_t pc_pmap; + TAILQ_ENTRY(pv_chunk) pc_list; + u_long pc_map[_NPCM]; /* bitmap; 1 = free */ + TAILQ_ENTRY(pv_chunk) pc_lru; + struct pv_entry pc_pventry[_NPCPV]; +}; + +/* * physmem_desc[] is a superset of phys_avail[] and describes all the * memory present in the system. * |
