From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752705AbdH2LMG (ORCPT ); Tue, 29 Aug 2017 07:12:06 -0400 Received: from terminus.zytor.com ([65.50.211.136]:52621 "EHLO terminus.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751805AbdH2LME (ORCPT ); Tue, 29 Aug 2017 07:12:04 -0400 Date: Tue, 29 Aug 2017 04:07:24 -0700 From: tip-bot for Thomas Gleixner Message-ID: Cc: peterz@infradead.org, rostedt@goodmis.org, mingo@kernel.org, bp@alien8.de, torvalds@linux-foundation.org, luto@kernel.org, tglx@linutronix.de, hpa@zytor.com, linux-kernel@vger.kernel.org Reply-To: linux-kernel@vger.kernel.org, hpa@zytor.com, peterz@infradead.org, bp@alien8.de, mingo@kernel.org, rostedt@goodmis.org, tglx@linutronix.de, luto@kernel.org, torvalds@linux-foundation.org In-Reply-To: <20170828064956.829552757@linutronix.de> References: <20170828064956.829552757@linutronix.de> To: linux-tip-commits@vger.kernel.org Subject: [tip:x86/apic] x86/apic: Use this_cpu_ptr() in local_timer_interrupt() Git-Commit-ID: 3bec6def39e32609e01a68b43476ee1f1c512eaa 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: 3bec6def39e32609e01a68b43476ee1f1c512eaa Gitweb: http://git.kernel.org/tip/3bec6def39e32609e01a68b43476ee1f1c512eaa Author: Thomas Gleixner AuthorDate: Mon, 28 Aug 2017 08:47:24 +0200 Committer: Ingo Molnar CommitDate: Tue, 29 Aug 2017 11:42:24 +0200 x86/apic: Use this_cpu_ptr() in local_timer_interrupt() Accessing the per cpu data via per_cpu(, smp_processor_id()) is pointless. Use this_cpu_ptr() instead. Signed-off-by: Thomas Gleixner Cc: Andy Lutomirski Cc: Borislav Petkov Cc: Linus Torvalds Cc: Peter Zijlstra Cc: Steven Rostedt Link: http://lkml.kernel.org/r/20170828064956.829552757@linutronix.de Signed-off-by: Ingo Molnar --- arch/x86/kernel/apic/apic.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/arch/x86/kernel/apic/apic.c b/arch/x86/kernel/apic/apic.c index 7a57b54..a33fa44 100644 --- a/arch/x86/kernel/apic/apic.c +++ b/arch/x86/kernel/apic/apic.c @@ -988,8 +988,7 @@ void setup_secondary_APIC_clock(void) */ static void local_apic_timer_interrupt(void) { - int cpu = smp_processor_id(); - struct clock_event_device *evt = &per_cpu(lapic_events, cpu); + struct clock_event_device *evt = this_cpu_ptr(&lapic_events); /* * Normally we should not be here till LAPIC has been initialized but @@ -1003,7 +1002,8 @@ static void local_apic_timer_interrupt(void) * spurious. */ if (!evt->event_handler) { - pr_warning("Spurious LAPIC timer interrupt on cpu %d\n", cpu); + pr_warning("Spurious LAPIC timer interrupt on cpu %d\n", + smp_processor_id()); /* Switch it off */ lapic_timer_shutdown(evt); return;