diff options
| author | Peter Wemm <peter@FreeBSD.org> | 2002-07-04 19:53:24 +0000 |
|---|---|---|
| committer | Peter Wemm <peter@FreeBSD.org> | 2002-07-04 19:53:24 +0000 |
| commit | 3a7ef7918c61f68cab51a58f5c957f04e2e5cd44 (patch) | |
| tree | dbf06341b5e86146c853b243189bc4cd2c8d28ba /sys | |
| parent | ae3155af28a57bf584fd4565ac060615b05bde59 (diff) | |
| download | src-3a7ef7918c61f68cab51a58f5c957f04e2e5cd44.tar.gz src-3a7ef7918c61f68cab51a58f5c957f04e2e5cd44.zip | |
Diff reduction (microoptimization) with another WIP. Move the frame
calculation in get_ptbase() to a little later on.
Notes
Notes:
svn path=/head/; revision=99415
Diffstat (limited to 'sys')
| -rw-r--r-- | sys/amd64/amd64/pmap.c | 7 | ||||
| -rw-r--r-- | sys/i386/i386/pmap.c | 7 |
2 files changed, 10 insertions, 4 deletions
diff --git a/sys/amd64/amd64/pmap.c b/sys/amd64/amd64/pmap.c index 5a46bd3c81dd..7b673e68b5c3 100644 --- a/sys/amd64/amd64/pmap.c +++ b/sys/amd64/amd64/pmap.c @@ -600,10 +600,13 @@ static pt_entry_t * get_ptbase(pmap) pmap_t pmap; { - pd_entry_t frame = pmap->pm_pdir[PTDPTDI] & PG_FRAME; + pd_entry_t frame; /* are we current address space or kernel? */ - if (pmap == kernel_pmap || frame == (PTDpde & PG_FRAME)) + if (pmap == kernel_pmap) + return PTmap; + frame = pmap->pm_pdir[PTDPTDI] & PG_FRAME; + if (frame == (PTDpde & PG_FRAME)) return PTmap; /* otherwise, we are alternate address space */ if (frame != (APTDpde & PG_FRAME)) { diff --git a/sys/i386/i386/pmap.c b/sys/i386/i386/pmap.c index 5a46bd3c81dd..7b673e68b5c3 100644 --- a/sys/i386/i386/pmap.c +++ b/sys/i386/i386/pmap.c @@ -600,10 +600,13 @@ static pt_entry_t * get_ptbase(pmap) pmap_t pmap; { - pd_entry_t frame = pmap->pm_pdir[PTDPTDI] & PG_FRAME; + pd_entry_t frame; /* are we current address space or kernel? */ - if (pmap == kernel_pmap || frame == (PTDpde & PG_FRAME)) + if (pmap == kernel_pmap) + return PTmap; + frame = pmap->pm_pdir[PTDPTDI] & PG_FRAME; + if (frame == (PTDpde & PG_FRAME)) return PTmap; /* otherwise, we are alternate address space */ if (frame != (APTDpde & PG_FRAME)) { |