From owner-svn-src-stable@freebsd.org Thu Oct 13 09:37:22 2016 Return-Path: Delivered-To: svn-src-stable@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 46E58C0E55E; Thu, 13 Oct 2016 09:37:22 +0000 (UTC) (envelope-from royger@FreeBSD.org) Received: from repo.freebsd.org (repo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:0]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 1823E21B; Thu, 13 Oct 2016 09:37:22 +0000 (UTC) (envelope-from royger@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id u9D9bLdX065947; Thu, 13 Oct 2016 09:37:21 GMT (envelope-from royger@FreeBSD.org) Received: (from royger@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id u9D9bL0v065946; Thu, 13 Oct 2016 09:37:21 GMT (envelope-from royger@FreeBSD.org) Message-Id: <201610130937.u9D9bL0v065946@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: royger set sender to royger@FreeBSD.org using -f From: =?UTF-8?Q?Roger_Pau_Monn=c3=a9?= Date: Thu, 13 Oct 2016 09:37:21 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-10@freebsd.org Subject: svn commit: r307213 - stable/10/sys/x86/x86 X-SVN-Group: stable-10 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: svn-src-stable@freebsd.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: SVN commit messages for all the -stable branches of the src tree List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 13 Oct 2016 09:37:22 -0000 Author: royger Date: Thu Oct 13 09:37:21 2016 New Revision: 307213 URL: https://svnweb.freebsd.org/changeset/base/307213 Log: MFC r303491: Revert r291022: x86/intr: allow mutex recursion in intr_remove_handler Sponsored by: Citrix Systems R&D Modified: stable/10/sys/x86/x86/intr_machdep.c Directory Properties: stable/10/ (props changed) Modified: stable/10/sys/x86/x86/intr_machdep.c ============================================================================== --- stable/10/sys/x86/x86/intr_machdep.c Thu Oct 13 09:27:08 2016 (r307212) +++ stable/10/sys/x86/x86/intr_machdep.c Thu Oct 13 09:37:21 2016 (r307213) @@ -197,28 +197,19 @@ int intr_remove_handler(void *cookie) { struct intsrc *isrc; - int error, mtx_owned; + int error; isrc = intr_handler_source(cookie); error = intr_event_remove_handler(cookie); if (error == 0) { - /* - * Recursion is needed here so PICs can remove interrupts - * while resuming. It was previously not possible due to - * intr_resume holding the intr_table_lock and - * intr_remove_handler recursing on it. - */ - mtx_owned = mtx_owned(&intr_table_lock); - if (mtx_owned == 0) - mtx_lock(&intr_table_lock); + mtx_lock(&intr_table_lock); isrc->is_handlers--; if (isrc->is_handlers == 0) { isrc->is_pic->pic_disable_source(isrc, PIC_NO_EOI); isrc->is_pic->pic_disable_intr(isrc); } intrcnt_updatename(isrc); - if (mtx_owned == 0) - mtx_unlock(&intr_table_lock); + mtx_unlock(&intr_table_lock); } return (error); }