From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753453AbeENMtv (ORCPT ); Mon, 14 May 2018 08:49:51 -0400 Received: from terminus.zytor.com ([198.137.202.136]:56683 "EHLO terminus.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752846AbeENMtt (ORCPT ); Mon, 14 May 2018 08:49:49 -0400 Date: Mon, 14 May 2018 05:48:52 -0700 From: tip-bot for Frederic Weisbecker Message-ID: Cc: paulus@samba.org, mpe@ellerman.id.au, tglx@linutronix.de, peterz@infradead.org, frederic@kernel.org, dalias@libc.org, linux-kernel@vger.kernel.org, fenghua.yu@intel.com, deller@gmx.de, schwidefsky@de.ibm.com, benh@kernel.crashing.org, davem@davemloft.net, bigeasy@linutronix.de, jejb@parisc-linux.org, mingo@kernel.org, torvalds@linux-foundation.org, ysato@users.sourceforge.jp, heiko.carstens@de.ibm.com, hpa@zytor.com, tony.luck@intel.com Reply-To: frederic@kernel.org, dalias@libc.org, peterz@infradead.org, fenghua.yu@intel.com, linux-kernel@vger.kernel.org, deller@gmx.de, schwidefsky@de.ibm.com, davem@davemloft.net, benh@kernel.crashing.org, paulus@samba.org, mpe@ellerman.id.au, tglx@linutronix.de, heiko.carstens@de.ibm.com, ysato@users.sourceforge.jp, tony.luck@intel.com, hpa@zytor.com, jejb@parisc-linux.org, bigeasy@linutronix.de, mingo@kernel.org, torvalds@linux-foundation.org In-Reply-To: <1525786706-22846-5-git-send-email-frederic@kernel.org> References: <1525786706-22846-5-git-send-email-frederic@kernel.org> To: linux-tip-commits@vger.kernel.org Subject: [tip:irq/core] softirq/core: Turn default irq_cpustat_t to standard per-cpu Git-Commit-ID: 0f6f47bacba514f4e9f61de0d85940dfb41498cc 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: 0f6f47bacba514f4e9f61de0d85940dfb41498cc Gitweb: https://git.kernel.org/tip/0f6f47bacba514f4e9f61de0d85940dfb41498cc Author: Frederic Weisbecker AuthorDate: Tue, 8 May 2018 15:38:19 +0200 Committer: Ingo Molnar CommitDate: Mon, 14 May 2018 11:25:27 +0200 softirq/core: Turn default irq_cpustat_t to standard per-cpu In order to optimize and consolidate softirq mask accesses, let's convert the default irq_cpustat_t implementation to per-CPU standard API. Signed-off-by: Frederic Weisbecker Acked-by: Thomas Gleixner Acked-by: Peter Zijlstra Cc: Benjamin Herrenschmidt Cc: David S. Miller Cc: Fenghua Yu Cc: Heiko Carstens Cc: Helge Deller Cc: James E.J. Bottomley Cc: Linus Torvalds Cc: Martin Schwidefsky Cc: Michael Ellerman Cc: Paul Mackerras Cc: Rich Felker Cc: Sebastian Andrzej Siewior Cc: Tony Luck Cc: Yoshinori Sato Link: http://lkml.kernel.org/r/1525786706-22846-5-git-send-email-frederic@kernel.org Signed-off-by: Ingo Molnar --- include/linux/irq_cpustat.h | 4 ++-- kernel/softirq.c | 4 ++-- 2 files changed, 4 insertions(+), 4 deletions(-) diff --git a/include/linux/irq_cpustat.h b/include/linux/irq_cpustat.h index 4954948d1973..ddea03c7c39d 100644 --- a/include/linux/irq_cpustat.h +++ b/include/linux/irq_cpustat.h @@ -18,8 +18,8 @@ */ #ifndef __ARCH_IRQ_STAT -extern irq_cpustat_t irq_stat[]; /* defined in asm/hardirq.h */ -#define __IRQ_STAT(cpu, member) (irq_stat[cpu].member) +DECLARE_PER_CPU_ALIGNED(irq_cpustat_t, irq_stat); /* defined in asm/hardirq.h */ +#define __IRQ_STAT(cpu, member) (per_cpu(irq_stat.member, cpu)) #endif /* arch independent irq_stat fields */ diff --git a/kernel/softirq.c b/kernel/softirq.c index 177de3640c78..c5fafd792df1 100644 --- a/kernel/softirq.c +++ b/kernel/softirq.c @@ -49,8 +49,8 @@ */ #ifndef __ARCH_IRQ_STAT -irq_cpustat_t irq_stat[NR_CPUS] ____cacheline_aligned; -EXPORT_SYMBOL(irq_stat); +DEFINE_PER_CPU_ALIGNED(irq_cpustat_t, irq_stat); +EXPORT_PER_CPU_SYMBOL(irq_stat); #endif static struct softirq_action softirq_vec[NR_SOFTIRQS] __cacheline_aligned_in_smp;