From patchwork Fri Dec 18 14:09:05 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: David Vrabel X-Patchwork-Id: 7884471 Return-Path: X-Original-To: patchwork-xen-devel@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 7640D9F1AF for ; Fri, 18 Dec 2015 14:11:58 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id B721E203ED for ; Fri, 18 Dec 2015 14:11:57 +0000 (UTC) Received: from lists.xen.org (lists.xenproject.org [50.57.142.19]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 8F1222041D for ; Fri, 18 Dec 2015 14:11:51 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=lists.xen.org) by lists.xen.org with esmtp (Exim 4.72) (envelope-from ) id 1a9viw-0006ie-JW; Fri, 18 Dec 2015 14:09:34 +0000 Received: from mail6.bemta4.messagelabs.com ([85.158.143.247]) by lists.xen.org with esmtp (Exim 4.72) (envelope-from ) id 1a9viu-0006hj-TM for xen-devel@lists.xenproject.org; Fri, 18 Dec 2015 14:09:32 +0000 Received: from [85.158.143.35] by server-1.bemta-4.messagelabs.com id 35/20-21571-C9314765; Fri, 18 Dec 2015 14:09:32 +0000 X-Env-Sender: prvs=787c6add4=david.vrabel@citrix.com X-Msg-Ref: server-4.tower-21.messagelabs.com!1450447764!6104014!2 X-Originating-IP: [66.165.176.63] X-SpamReason: No, hits=0.0 required=7.0 tests=sa_preprocessor: VHJ1c3RlZCBJUDogNjYuMTY1LjE3Ni42MyA9PiAzMDYwNDg=\n, received_headers: No Received headers X-StarScan-Received: X-StarScan-Version: 7.35.1; banners=-,-,- X-VirusChecked: Checked Received: (qmail 30748 invoked from network); 18 Dec 2015 14:09:30 -0000 Received: from smtp02.citrix.com (HELO SMTP02.CITRIX.COM) (66.165.176.63) by server-4.tower-21.messagelabs.com with RC4-SHA encrypted SMTP; 18 Dec 2015 14:09:30 -0000 X-IronPort-AV: E=Sophos;i="5.20,446,1444694400"; d="scan'208";a="326265719" From: David Vrabel To: Date: Fri, 18 Dec 2015 14:09:05 +0000 Message-ID: <1450447746-9305-4-git-send-email-david.vrabel@citrix.com> X-Mailer: git-send-email 2.1.4 In-Reply-To: <1450447746-9305-1-git-send-email-david.vrabel@citrix.com> References: <1450447746-9305-1-git-send-email-david.vrabel@citrix.com> MIME-Version: 1.0 X-DLP: MIA2 Cc: Jennifer Herbert , David Vrabel , Jan Beulich , Ian Campbell Subject: [Xen-devel] [PATCHv1 3/4] spinlock: shrink struct lock_debug X-BeenThere: xen-devel@lists.xen.org X-Mailman-Version: 2.1.13 Precedence: list List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xen.org Errors-To: xen-devel-bounces@lists.xen.org X-Spam-Status: No, score=-4.2 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Jennifer Herbert Reduce the size of struct lock_debug so increases in other lock structures don't increase the size of struct domain too much. Signed-off-by: Jennifer Herbert Signed-off-by: David Vrabel --- xen/common/spinlock.c | 2 +- xen/include/xen/spinlock.h | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/xen/common/spinlock.c b/xen/common/spinlock.c index 7f89694..c129a88 100644 --- a/xen/common/spinlock.c +++ b/xen/common/spinlock.c @@ -16,7 +16,7 @@ static atomic_t spin_debug __read_mostly = ATOMIC_INIT(0); static void check_lock(struct lock_debug *debug) { - int irq_safe = !local_irq_is_enabled(); + s16 irq_safe = !local_irq_is_enabled(); if ( unlikely(atomic_read(&spin_debug) <= 0) ) return; diff --git a/xen/include/xen/spinlock.h b/xen/include/xen/spinlock.h index fb0438e..5e54407 100644 --- a/xen/include/xen/spinlock.h +++ b/xen/include/xen/spinlock.h @@ -6,7 +6,7 @@ #ifndef NDEBUG struct lock_debug { - int irq_safe; /* +1: IRQ-safe; 0: not IRQ-safe; -1: don't know yet */ + s16 irq_safe; /* +1: IRQ-safe; 0: not IRQ-safe; -1: don't know yet */ }; #define _LOCK_DEBUG { -1 } void spin_debug_enable(void);