Date: Thu, 29 Apr 2010 22:42:19 +0000 (UTC) From: Kip Macy <kmacy@FreeBSD.org> To: src-committers@freebsd.org, svn-src-user@freebsd.org Subject: svn commit: r207398 - user/kmacy/head_page_lock_incr/sys/ia64/ia64 Message-ID: <201004292242.o3TMgJeV080532@svn.freebsd.org>
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Author: kmacy Date: Thu Apr 29 22:42:18 2010 New Revision: 207398 URL: http://svn.freebsd.org/changeset/base/207398 Log: add page lock hold support to ia64 Modified: user/kmacy/head_page_lock_incr/sys/ia64/ia64/pmap.c Modified: user/kmacy/head_page_lock_incr/sys/ia64/ia64/pmap.c ============================================================================== --- user/kmacy/head_page_lock_incr/sys/ia64/ia64/pmap.c Thu Apr 29 22:40:12 2010 (r207397) +++ user/kmacy/head_page_lock_incr/sys/ia64/ia64/pmap.c Thu Apr 29 22:42:18 2010 (r207398) @@ -1028,18 +1028,22 @@ pmap_extract_and_hold(pmap_t pmap, vm_of struct ia64_lpte *pte; pmap_t oldpmap; vm_page_t m; + vm_paddr_t pa; + pa = 0; m = NULL; - vm_page_lock_queues(); PMAP_LOCK(pmap); oldpmap = pmap_switch(pmap); +retry: pte = pmap_find_vhpt(va); if (pte != NULL && pmap_present(pte) && (pmap_prot(pte) & prot) == prot) { m = PHYS_TO_VM_PAGE(pmap_ppn(pte)); + if (vm_page_pa_tryrelock(pmap, pmap_ppn(pte), &pa)) + goto retry; vm_page_hold(m); } - vm_page_unlock_queues(); + PA_UNLOCK_COND(pa); pmap_switch(oldpmap); PMAP_UNLOCK(pmap); return (m);
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