From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757313AbcEEJuV (ORCPT ); Thu, 5 May 2016 05:50:21 -0400 Received: from terminus.zytor.com ([198.137.202.10]:44850 "EHLO terminus.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756401AbcEEJuS (ORCPT ); Thu, 5 May 2016 05:50:18 -0400 Date: Thu, 5 May 2016 02:49:10 -0700 From: tip-bot for Alexander Shishkin Message-ID: Cc: acme@redhat.com, mathieu.poirier@linaro.org, peterz@infradead.org, jolsa@redhat.com, eranian@google.com, acme@infradead.org, linux-kernel@vger.kernel.org, vincent.weaver@maine.edu, hpa@zytor.com, tglx@linutronix.de, bp@alien8.de, alexander.shishkin@linux.intel.com, torvalds@linux-foundation.org, mingo@kernel.org Reply-To: tglx@linutronix.de, hpa@zytor.com, vincent.weaver@maine.edu, alexander.shishkin@linux.intel.com, bp@alien8.de, torvalds@linux-foundation.org, mingo@kernel.org, peterz@infradead.org, acme@redhat.com, mathieu.poirier@linaro.org, jolsa@redhat.com, acme@infradead.org, linux-kernel@vger.kernel.org, eranian@google.com In-Reply-To: <1461857746-31346-2-git-send-email-alexander.shishkin@linux.intel.com> References: <1461857746-31346-2-git-send-email-alexander.shishkin@linux.intel.com> To: linux-tip-commits@vger.kernel.org Subject: [tip:perf/core] perf/x86/intel/pt: Convert ACCESS_ONCE()s Git-Commit-ID: 1b6de5917172967acd8db4d222df4225d23a8a60 X-Mailer: tip-git-log-daemon Robot-ID: Robot-Unsubscribe: Contact to get blacklisted from these emails MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain; charset=UTF-8 Content-Disposition: inline Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Commit-ID: 1b6de5917172967acd8db4d222df4225d23a8a60 Gitweb: http://git.kernel.org/tip/1b6de5917172967acd8db4d222df4225d23a8a60 Author: Alexander Shishkin AuthorDate: Thu, 28 Apr 2016 18:35:44 +0300 Committer: Ingo Molnar CommitDate: Thu, 5 May 2016 10:16:29 +0200 perf/x86/intel/pt: Convert ACCESS_ONCE()s This patch converts remaining ACCESS_ONCE() instances into READ_ONCE() and WRITE_ONCE() as appropriate. Signed-off-by: Alexander Shishkin Signed-off-by: Peter Zijlstra (Intel) Cc: Arnaldo Carvalho de Melo Cc: Arnaldo Carvalho de Melo Cc: Borislav Petkov Cc: Jiri Olsa Cc: Linus Torvalds Cc: Mathieu Poirier Cc: Peter Zijlstra Cc: Stephane Eranian Cc: Thomas Gleixner Cc: Vince Weaver Cc: vince@deater.net Link: http://lkml.kernel.org/r/1461857746-31346-2-git-send-email-alexander.shishkin@linux.intel.com Signed-off-by: Ingo Molnar --- arch/x86/events/intel/pt.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/arch/x86/events/intel/pt.c b/arch/x86/events/intel/pt.c index c3a359c..54fa238 100644 --- a/arch/x86/events/intel/pt.c +++ b/arch/x86/events/intel/pt.c @@ -1135,7 +1135,7 @@ void intel_pt_interrupt(void) * after PT has been disabled by pt_event_stop(). Make sure we don't * do anything (particularly, re-enable) for this event here. */ - if (!ACCESS_ONCE(pt->handle_nmi)) + if (!READ_ONCE(pt->handle_nmi)) return; /* @@ -1237,7 +1237,7 @@ static void pt_event_start(struct perf_event *event, int mode) goto fail_end_stop; } - ACCESS_ONCE(pt->handle_nmi) = 1; + WRITE_ONCE(pt->handle_nmi, 1); hwc->state = 0; pt_config_buffer(buf->cur->table, buf->cur_idx, @@ -1260,7 +1260,7 @@ static void pt_event_stop(struct perf_event *event, int mode) * Protect against the PMI racing with disabling wrmsr, * see comment in intel_pt_interrupt(). */ - ACCESS_ONCE(pt->handle_nmi) = 0; + WRITE_ONCE(pt->handle_nmi, 0); pt_config_stop(event);