From patchwork Sat Sep 6 00:06:17 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Behan Webster X-Patchwork-Id: 4856581 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork1.web.kernel.org (Postfix) with ESMTP id A29559F314 for ; Sat, 6 Sep 2014 00:09:40 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id C878D20225 for ; Sat, 6 Sep 2014 00:09:39 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 00EBE20211 for ; Sat, 6 Sep 2014 00:09:39 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1XQ3Xu-0000AT-Rx; Sat, 06 Sep 2014 00:08:02 +0000 Received: from mail-pa0-x231.google.com ([2607:f8b0:400e:c03::231]) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1XQ3XG-0007sc-4Y for linux-arm-kernel@lists.infradead.org; Sat, 06 Sep 2014 00:07:23 +0000 Received: by mail-pa0-f49.google.com with SMTP id kq14so22831909pab.8 for ; Fri, 05 Sep 2014 17:07:01 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=converseincode.com; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=w14q2SmPdmm0pmoafdGlZqs0Ec0BOwj5x3Nq8YNY28c=; b=B+fu51/2BowUrJhwfc22saLUZ7tlVl+7Ro3RnPCq/VdpcEeOQQD3WtdpWibUp9n9Me zrXZkej23JfcvIOpnfM3y/ySd91iwWDyVOAX/D9EXuWouy1m0a4IApMaQbSuyP2mPQgW sdddr+AqpvTZpmeNPch5hIRhanM15jKgFXfHs= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=w14q2SmPdmm0pmoafdGlZqs0Ec0BOwj5x3Nq8YNY28c=; b=Z3xwz9l2zUCmnUqyQQRg+ife3WCsIlOpJMmJoCETzitwRUy2611Z+DblYFLUHka3mt xy9V4DJXjM0b0vXicYCc+EhcrNWeahdOJmHAD7+obUrriEQMQVLB5FBU8MoqYdce2PpF renIywVC++TNxIu64GHB1EF+V0Taj2KhG1bTVex21wL/cFH44nfk8n/WZ2uvUT/O5Tw9 Te902JA07jk7uXCX4MvikptQt9Dt20K6SaiRoZZ8tWTkVHbkG1+4QLzyalShuBiYMyrs uFfyWPCd8h+sEREvGL+dOwRxCNk1k2cW580yLLPyd0N9vBeIlKqDUWlqnAADps0Crp3C aCmA== X-Gm-Message-State: ALoCoQlCWMBV2XwPokStrdOGwPxFmWigAQWLfn+mjZgcI07u/3cXaJo04ES6zJ4Yh0KK2NdgDls7 X-Received: by 10.70.43.229 with SMTP id z5mr27146724pdl.150.1409962021244; Fri, 05 Sep 2014 17:07:01 -0700 (PDT) Received: from galdor.websterwood.com (S0106dc9fdb80cffd.gv.shawcable.net. [96.50.97.138]) by mx.google.com with ESMTPSA id yx1sm2867621pab.5.2014.09.05.17.06.58 for (version=TLSv1.2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Fri, 05 Sep 2014 17:07:00 -0700 (PDT) From: behanw@converseincode.com To: a.ryabinin@samsung.com, anurag19aggarwal@gmail.com, charlebm@gmail.com, cl@linux-foundation.org, dave.long@linaro.org, k.khlebnikov@samsung.com, linux@arm.linux.org.uk, linyongting@gmail.com, Nikolay.Borisov@arm.com, tglx@linutronix.de, tj@kernel.org, u.kleine-koenig@pengutronix.de Subject: [PATCH v2 7/7] arm: LLVMLinux: Use global stack register variable for percpu Date: Fri, 5 Sep 2014 17:06:17 -0700 Message-Id: <1409961977-11762-8-git-send-email-behanw@converseincode.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1409961977-11762-1-git-send-email-behanw@converseincode.com> References: <1409961977-11762-1-git-send-email-behanw@converseincode.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20140905_170722_216903_30C223A8 X-CRM114-Status: GOOD ( 10.72 ) X-Spam-Score: -0.8 (/) Cc: rric@kernel.org, will.deacon@arm.com, linux-kernel@vger.kernel.org, rostedt@goodmis.org, rabin@rab.in, Dave.Martin@arm.com, linux-arm-kernel@lists.infradead.org X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-3.5 required=5.0 tests=BAYES_00,DKIM_SIGNED, RCVD_IN_DNSWL_NONE,RP_MATCHES_RCVD,T_DKIM_INVALID,UNPARSEABLE_RELAY autolearn=ham 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: Mark Charlebois Using global current_stack_pointer works on both clang and gcc. current_stack_pointer is an unsigned long and needs to be cast as a pointer to dereference. Signed-off-by: Mark Charlebois --- arch/arm/include/asm/percpu.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/arm/include/asm/percpu.h b/arch/arm/include/asm/percpu.h index 209e650..a89b407 100644 --- a/arch/arm/include/asm/percpu.h +++ b/arch/arm/include/asm/percpu.h @@ -30,14 +30,14 @@ static inline void set_my_cpu_offset(unsigned long off) static inline unsigned long __my_cpu_offset(void) { unsigned long off; - register unsigned long *sp asm ("sp"); /* * Read TPIDRPRW. * We want to allow caching the value, so avoid using volatile and * instead use a fake stack read to hazard against barrier(). */ - asm("mrc p15, 0, %0, c13, c0, 4" : "=r" (off) : "Q" (*sp)); + asm("mrc p15, 0, %0, c13, c0, 4" : "=r" (off) + : "Q" (*(const unsigned long *)current_stack_pointer)); return off; }