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| author | alc <alc@FreeBSD.org> | 2012-08-09 16:38:17 +0000 |
|---|---|---|
| committer | alc <alc@FreeBSD.org> | 2012-08-09 16:38:17 +0000 |
| commit | 9b3a7015c6d01a571d558b448ba194752db4a276 (patch) | |
| tree | b4917c6d9f8ddebaa31ac915a06dcc32f85dff7c /sys/mips/include/pmap.h | |
| parent | 01c6b906beb3f49fe7d799ffaa172f7b9d686595 (diff) | |
| download | FreeBSD-src-9b3a7015c6d01a571d558b448ba194752db4a276.zip FreeBSD-src-9b3a7015c6d01a571d558b448ba194752db4a276.tar.gz | |
Merge r132141 and r111272 from amd64/i386:
Reduce the size of a PV entry by eliminating pv_ptem. There is no need
to store a pointer to the page table page in the PV entry because it is
easily computed during the walk down the page table.
Eliminate the ptphint from the pmap. Long, long ago, page table pages
belonged to a vm object, and we would look up page table pages based
upon their offset within this vm object. In those days, this hint may
have had tangible benefits.
Tested by: jchandra
Diffstat (limited to 'sys/mips/include/pmap.h')
| -rw-r--r-- | sys/mips/include/pmap.h | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/sys/mips/include/pmap.h b/sys/mips/include/pmap.h index fbe8dd3..e10212b 100644 --- a/sys/mips/include/pmap.h +++ b/sys/mips/include/pmap.h @@ -90,7 +90,6 @@ struct pmap { u_int32_t gen:ASIDGEN_BITS; /* its generation number */ } pm_asid[MAXSMPCPU]; struct pmap_statistics pm_stats; /* pmap statistics */ - struct vm_page *pm_ptphint; /* pmap ptp hint */ struct mtx pm_mtx; }; @@ -126,7 +125,6 @@ typedef struct pv_entry { vm_offset_t pv_va; /* virtual address for mapping */ TAILQ_ENTRY(pv_entry) pv_list; TAILQ_ENTRY(pv_entry) pv_plist; - vm_page_t pv_ptem; /* VM page for pte */ } *pv_entry_t; /* |
