From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756846Ab0JYP7P (ORCPT ); Mon, 25 Oct 2010 11:59:15 -0400 Received: from 74-93-104-97-Washington.hfc.comcastbusiness.net ([74.93.104.97]:35110 "EHLO sunset.davemloft.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756768Ab0JYP7O (ORCPT ); Mon, 25 Oct 2010 11:59:14 -0400 Date: Mon, 25 Oct 2010 08:59:37 -0700 (PDT) Message-Id: <20101025.085937.226775583.davem@davemloft.net> To: namhyung@gmail.com Cc: sparclinux@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 2/3] sparc32: remove CONFIG_HAVE_PERF_EVENTS option From: David Miller In-Reply-To: <1288021958-3130-2-git-send-email-namhyung@gmail.com> References: <1288021958-3130-1-git-send-email-namhyung@gmail.com> <1288021958-3130-2-git-send-email-namhyung@gmail.com> X-Mailer: Mew version 6.3 on Emacs 23.1 / Mule 6.0 (HANACHIRUSATO) Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Namhyung Kim Date: Tue, 26 Oct 2010 00:52:37 +0900 > Remove HAVE_PERF_EVENTS and PERF_USE_VMALLOC under config > SPARC because they're under SPARC64 too. Supporting > perf_event needs atomic64 operations but AFAIK sparc32 > doesn't provide them, CMIIW. ;-) Also removes redundant > HAVE_IRQ_WORK line. > > Signed-off-by: Namhyung Kim The generic non-hw perf event stuff builds fine on sparc32, please don't remove this unless you have a legitimate build failure to report and fix. Even if sparc32 doesn't provide atomic64_t support, it very easily could do so using include/asm-generic/atomic64.h which implements them using spinlocks.