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| author | kmacy <kmacy@FreeBSD.org> | 2010-04-30 00:46:43 +0000 |
|---|---|---|
| committer | kmacy <kmacy@FreeBSD.org> | 2010-04-30 00:46:43 +0000 |
| commit | 1dc1263413262d13f45f42d89c554d0ddc167ca2 (patch) | |
| tree | 250705d42bcb9b364f4fd2233c38faaadadf7ae0 /sys/i386/include/pmap.h | |
| parent | a43425e8835983e7c93a15a2d6a42fdb292c1676 (diff) | |
| download | FreeBSD-src-1dc1263413262d13f45f42d89c554d0ddc167ca2.zip FreeBSD-src-1dc1263413262d13f45f42d89c554d0ddc167ca2.tar.gz | |
On Alan's advice, rather than do a wholesale conversion on a single
architecture from page queue lock to a hashed array of page locks
(based on a patch by Jeff Roberson), I've implemented page lock
support in the MI code and have only moved vm_page's hold_count
out from under page queue mutex to page lock. This changes
pmap_extract_and_hold on all pmaps.
Supported by: Bitgravity Inc.
Discussed with: alc, jeffr, and kib
Diffstat (limited to 'sys/i386/include/pmap.h')
| -rw-r--r-- | sys/i386/include/pmap.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/sys/i386/include/pmap.h b/sys/i386/include/pmap.h index ae7d79d..f45a9df 100644 --- a/sys/i386/include/pmap.h +++ b/sys/i386/include/pmap.h @@ -420,11 +420,14 @@ struct pmap { u_int pm_active; /* active on cpus */ struct pmap_statistics pm_stats; /* pmap statistics */ LIST_ENTRY(pmap) pm_list; /* List of all pmaps */ + uint32_t pm_gen_count; /* generation count (pmap lock dropped) */ + u_int pm_retries; #ifdef PAE pdpt_entry_t *pm_pdpt; /* KVA of page director pointer table */ #endif vm_page_t pm_root; /* spare page table pages */ + }; typedef struct pmap *pmap_t; |
