Date: Sun, 18 Mar 2012 13:22:42 +0000 (UTC) From: Nathan Whitehorn <nwhitehorn@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r233117 - head/sys/powerpc/aim Message-ID: <201203181322.q2IDMg9W020835@svn.freebsd.org>
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Author: nwhitehorn Date: Sun Mar 18 13:22:42 2012 New Revision: 233117 URL: http://svn.freebsd.org/changeset/base/233117 Log: Remove acquisition of VM page queues lock from pmap_protect(). Any actual manipulation of the pvo_vlink and pvo_olink entries is already protected by the table lock, so most remaining instances of the acquisition of the page queues lock can likely be replaced with the table lock, or removed if the table lock is already held. Reviewed by: alc Modified: head/sys/powerpc/aim/mmu_oea64.c Modified: head/sys/powerpc/aim/mmu_oea64.c ============================================================================== --- head/sys/powerpc/aim/mmu_oea64.c Sun Mar 18 13:02:56 2012 (r233116) +++ head/sys/powerpc/aim/mmu_oea64.c Sun Mar 18 13:22:42 2012 (r233117) @@ -1965,7 +1965,6 @@ moea64_protect(mmu_t mmu, pmap_t pm, vm_ return; } - vm_page_lock_queues(); PMAP_LOCK(pm); if ((eva - sva)/PAGE_SIZE < pm->pm_stats.resident_count) { for (; sva < eva; sva += PAGE_SIZE) { @@ -1980,7 +1979,6 @@ moea64_protect(mmu_t mmu, pmap_t pm, vm_ moea64_pvo_protect(mmu, pm, pvo, prot); } } - vm_page_unlock_queues(); PMAP_UNLOCK(pm); }
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