From owner-svn-src-all@FreeBSD.ORG Tue Nov 29 13:07:33 2011 Return-Path: Delivered-To: svn-src-all@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 059031065672; Tue, 29 Nov 2011 13:07:33 +0000 (UTC) (envelope-from kib@FreeBSD.org) Received: from svn.freebsd.org (svn.freebsd.org [IPv6:2001:4f8:fff6::2c]) by mx1.freebsd.org (Postfix) with ESMTP id DF3DB8FC1B; Tue, 29 Nov 2011 13:07:32 +0000 (UTC) Received: from svn.freebsd.org (localhost [127.0.0.1]) by svn.freebsd.org (8.14.4/8.14.4) with ESMTP id pATD7W5g044993; Tue, 29 Nov 2011 13:07:32 GMT (envelope-from kib@svn.freebsd.org) Received: (from kib@localhost) by svn.freebsd.org (8.14.4/8.14.4/Submit) id pATD7WTg044990; Tue, 29 Nov 2011 13:07:32 GMT (envelope-from kib@svn.freebsd.org) Message-Id: <201111291307.pATD7WTg044990@svn.freebsd.org> From: Konstantin Belousov Date: Tue, 29 Nov 2011 13:07:32 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org X-SVN-Group: head MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Cc: Subject: svn commit: r228133 - head/sys/vm X-BeenThere: svn-src-all@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: "SVN commit messages for the entire src tree \(except for " user" and " projects" \)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 29 Nov 2011 13:07:33 -0000 Author: kib Date: Tue Nov 29 13:07:32 2011 New Revision: 228133 URL: http://svn.freebsd.org/changeset/base/228133 Log: Hide the internals of vm_page_lock(9) from the loadable modules. Since the address of vm_page lock mutex depends on the kernel options, it is easy for module to get out of sync with the kernel. No vm_page_lockptr() accessor is provided for modules. It can be added later if needed, unless proper KPI is developed to serve the needs. Reviewed by: attilio, alc MFC after: 3 weeks Modified: head/sys/vm/vm_page.c head/sys/vm/vm_page.h Modified: head/sys/vm/vm_page.c ============================================================================== --- head/sys/vm/vm_page.c Tue Nov 29 12:55:26 2011 (r228132) +++ head/sys/vm/vm_page.c Tue Nov 29 13:07:32 2011 (r228133) @@ -2843,6 +2843,36 @@ vm_page_test_dirty(vm_page_t m) vm_page_dirty(m); } +void +vm_page_lock_KBI(vm_page_t m, const char *file, int line) +{ + + mtx_lock_flags_(vm_page_lockptr(m), 0, file, line); +} + +void +vm_page_unlock_KBI(vm_page_t m, const char *file, int line) +{ + + mtx_unlock_flags_(vm_page_lockptr(m), 0, file, line); +} + +int +vm_page_trylock_KBI(vm_page_t m, const char *file, int line) +{ + + return (mtx_trylock_flags_(vm_page_lockptr(m), 0, file, line)); +} + +#if defined(INVARIANTS) || defined(INVARIANT_SUPPORT) +void +vm_page_lock_assert_KBI(vm_page_t m, int a, const char *file, int line) +{ + + mtx_assert_(vm_page_lockptr(m), a, file, line); +} +#endif + int so_zerocp_fullpage = 0; /* Modified: head/sys/vm/vm_page.h ============================================================================== --- head/sys/vm/vm_page.h Tue Nov 29 12:55:26 2011 (r228132) +++ head/sys/vm/vm_page.h Tue Nov 29 13:07:32 2011 (r228133) @@ -218,11 +218,23 @@ extern struct vpglocks pa_lock[]; #define PA_LOCK_ASSERT(pa, a) mtx_assert(PA_LOCKPTR(pa), (a)) +#ifdef KLD_MODULE +#define vm_page_lock(m) vm_page_lock_KBI((m), LOCK_FILE, LOCK_LINE) +#define vm_page_unlock(m) vm_page_unlock_KBI((m), LOCK_FILE, LOCK_LINE) +#define vm_page_trylock(m) vm_page_trylock_KBI((m), LOCK_FILE, LOCK_LINE) +#if defined(INVARIANTS) +#define vm_page_lock_assert(m, a) \ + vm_page_lock_assert_KBI((m), (a), __FILE__, __LINE__) +#else +#define vm_page_lock_assert(m, a) +#endif +#else /* !KLD_MODULE */ #define vm_page_lockptr(m) (PA_LOCKPTR(VM_PAGE_TO_PHYS((m)))) #define vm_page_lock(m) mtx_lock(vm_page_lockptr((m))) #define vm_page_unlock(m) mtx_unlock(vm_page_lockptr((m))) #define vm_page_trylock(m) mtx_trylock(vm_page_lockptr((m))) #define vm_page_lock_assert(m, a) mtx_assert(vm_page_lockptr((m)), (a)) +#endif #define vm_page_queue_free_mtx vm_page_queue_free_lock.data /* @@ -405,6 +417,13 @@ void vm_page_cowfault (vm_page_t); int vm_page_cowsetup(vm_page_t); void vm_page_cowclear (vm_page_t); +void vm_page_lock_KBI(vm_page_t m, const char *file, int line); +void vm_page_unlock_KBI(vm_page_t m, const char *file, int line); +int vm_page_trylock_KBI(vm_page_t m, const char *file, int line); +#if defined(INVARIANTS) || defined(INVARIANT_SUPPORT) +void vm_page_lock_assert_KBI(vm_page_t m, int a, const char *file, int line); +#endif + #ifdef INVARIANTS void vm_page_object_lock_assert(vm_page_t m); #define VM_PAGE_OBJECT_LOCK_ASSERT(m) vm_page_object_lock_assert(m)