From: Frederic Weisbecker <frederic@kernel.org> To: Ingo Molnar <mingo@kernel.org> Cc: LKML <linux-kernel@vger.kernel.org>, Frederic Weisbecker <frederic@kernel.org>, Sebastian Andrzej Siewior <bigeasy@linutronix.de>, Tony Luck <tony.luck@intel.com>, Peter Zijlstra <peterz@infradead.org>, "David S . Miller" <davem@davemloft.net>, Yoshinori Sato <ysato@users.sourceforge.jp>, Michael Ellerman <mpe@ellerman.id.au>, Helge Deller <deller@gmx.de>, Benjamin Herrenschmidt <benh@kernel.crashing.org>, Paul Mackerras <paulus@samba.org>, Thomas Gleixner <tglx@linutronix.de>, Martin Schwidefsky <schwidefsky@de.ibm.com>, Rich Felker <dalias@libc.org>, Fenghua Yu <fenghua.yu@intel.com>, Heiko Carstens <heiko.carstens@de.ibm.com>, "James E . J . Bottomley" <jejb@parisc-linux.org> Subject: [PATCH 04/11] softirq: Turn default irq_cpustat_t to standard per-cpu Date: Tue, 8 May 2018 15:38:19 +0200 [thread overview] Message-ID: <1525786706-22846-5-git-send-email-frederic@kernel.org> (raw) In-Reply-To: <1525786706-22846-1-git-send-email-frederic@kernel.org> 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 <frederic@kernel.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ingo Molnar <mingo@kernel.org> Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Cc: David S. Miller <davem@davemloft.net> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: James E.J. Bottomley <jejb@parisc-linux.org> Cc: Helge Deller <deller@gmx.de> Cc: Tony Luck <tony.luck@intel.com> Cc: Fenghua Yu <fenghua.yu@intel.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Cc: Rich Felker <dalias@libc.org> --- 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 4954948..ddea03c 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 177de36..c5fafd7 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; -- 2.7.4
next prev parent reply other threads:[~2018-05-08 13:38 UTC|newest] Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top 2018-05-08 13:38 [GIT PULL] Frederic Weisbecker 2018-05-08 13:38 ` [PATCH 01/11] ia64: Convert local_softirq_pending() to per-cpu ops Frederic Weisbecker 2018-05-14 12:47 ` [tip:irq/core] softirq/ia64: " tip-bot for Frederic Weisbecker 2018-05-08 13:38 ` [PATCH 02/11] sparc: Convert local_softirq_pending() to use per-cpu op Frederic Weisbecker 2018-05-14 12:47 ` [tip:irq/core] softirq/sparc: " tip-bot for Frederic Weisbecker 2018-05-08 13:38 ` [PATCH 03/11] sh: Use nmi_count() on /proc/interrupts print out Frederic Weisbecker 2018-05-14 12:48 ` [tip:irq/core] softirq/sh: " tip-bot for Frederic Weisbecker 2018-05-08 13:38 ` Frederic Weisbecker [this message] 2018-05-14 12:48 ` [tip:irq/core] softirq/core: Turn default irq_cpustat_t to standard per-cpu tip-bot for Frederic Weisbecker 2018-05-08 13:38 ` [PATCH 05/11] softirq: Consolidate default local_softirq_pending() implementations Frederic Weisbecker 2018-05-14 12:49 ` [tip:irq/core] softirq/core: " tip-bot for Frederic Weisbecker 2018-05-08 13:38 ` [PATCH 06/11] ia64: Switch to generic local_softirq_pending() implementation Frederic Weisbecker 2018-05-14 12:49 ` [tip:irq/core] softirq/ia64: " tip-bot for Frederic Weisbecker 2018-05-08 13:38 ` [PATCH 07/11] parisc: " Frederic Weisbecker 2018-05-14 12:50 ` [tip:irq/core] softirq/parisc: " tip-bot for Frederic Weisbecker 2018-05-08 13:38 ` [PATCH 08/11] powerpc: " Frederic Weisbecker 2018-05-14 12:50 ` [tip:irq/core] softirq/powerpc: " tip-bot for Frederic Weisbecker 2018-05-08 13:38 ` [PATCH 09/11] sparc: " Frederic Weisbecker 2018-05-14 12:51 ` [tip:irq/core] softirq/sparc: " tip-bot for Frederic Weisbecker 2018-05-08 13:38 ` [PATCH 10/11] x86: " Frederic Weisbecker 2018-05-14 12:51 ` [tip:irq/core] softirq/x86: " tip-bot for Frederic Weisbecker 2018-05-08 13:38 ` [PATCH 11/11] softirq/s390: Move default mutators of overwritten softirq mask to s390 Frederic Weisbecker 2018-05-14 12:52 ` [tip:irq/core] " tip-bot for Frederic Weisbecker 2018-05-08 13:46 ` [GIT PULL] softirq: Consolidate and optimize softirq mask v4 Frederic Weisbecker
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