diff options
| author | Artur Grabowski <art@cvs.openbsd.org> | 2007-04-13 18:57:50 +0000 |
|---|---|---|
| committer | Artur Grabowski <art@cvs.openbsd.org> | 2007-04-13 18:57:50 +0000 |
| commit | 8dcbe71580f80a022d075e6454486bc9d964c765 (patch) | |
| tree | a758a75bd2f6e39d8ea45545b501abbee0430ef1 /sys/arch/sparc64 | |
| parent | 977eb8538189c8e232f80c85b5a0416ec6cd3670 (diff) | |
While splitting flags and pqflags might have been a good idea in theory
to separate locking, on most modern machines this is not enough
since operations on short types touch other short types that share the
same word in memory.
Merge pg_flags and pqflags again and now use atomic operations to change
the flags. Also bump wire_count to an int and pg_version might go
int as well, just for alignment.
tested by many, many. ok miod@
Diffstat (limited to 'sys/arch/sparc64')
| -rw-r--r-- | sys/arch/sparc64/sparc64/pmap.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/sys/arch/sparc64/sparc64/pmap.c b/sys/arch/sparc64/sparc64/pmap.c index c7239cc19e3..90804715e5b 100644 --- a/sys/arch/sparc64/sparc64/pmap.c +++ b/sys/arch/sparc64/sparc64/pmap.c @@ -1,4 +1,4 @@ -/* $OpenBSD: pmap.c,v 1.36 2007/04/05 20:08:30 claudio Exp $ */ +/* $OpenBSD: pmap.c,v 1.37 2007/04/13 18:57:49 art Exp $ */ /* $NetBSD: pmap.c,v 1.107 2001/08/31 16:47:41 eeh Exp $ */ #undef NO_VCACHE /* Don't forget the locked TLB in dostart */ /* @@ -3679,7 +3679,7 @@ vm_page_alloc1() struct vm_page *pg = uvm_pagealloc(NULL, 0, NULL, UVM_PGA_USERESERVE); if (pg) { pg->wire_count = 1; /* no mappings yet */ - pg->pg_flags &= ~PG_BUSY; /* never busy */ + atomic_clearbits_int(&pg->pg_flags, PG_BUSY); } return pg; } @@ -3702,7 +3702,7 @@ vm_page_free1(mem) Debugger(); return; } - mem->pg_flags |= PG_BUSY; + atomic_setbits_int(&mem->pg_flags, PG_BUSY); mem->wire_count = 0; uvm_pagefree(mem); } |