Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753704Ab0AVJ0z (ORCPT ); Fri, 22 Jan 2010 04:26:55 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753540Ab0AVJ0E (ORCPT ); Fri, 22 Jan 2010 04:26:04 -0500 Received: from sca-es-mail-2.Sun.COM ([192.18.43.133]:46227 "EHLO sca-es-mail-2.sun.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753477Ab0AVJZ5 (ORCPT ); Fri, 22 Jan 2010 04:25:57 -0500 MIME-version: 1.0 Content-transfer-encoding: 7BIT Content-type: TEXT/PLAIN Date: Fri, 22 Jan 2010 01:24:41 -0800 From: Yinghai Lu Subject: [PATCH 32/38] sparseirq: change irq_desc_ptrs to static In-reply-to: <1264152287-13866-1-git-send-email-yinghai@kernel.org> To: Ingo Molnar , Thomas Gleixner , "H. Peter Anvin" , Andrew Morton , Linus Torvalds Cc: Jesse Barnes , Christoph Lameter , linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org, Yinghai Lu Message-id: <1264152287-13866-33-git-send-email-yinghai@kernel.org> X-Mailer: git-send-email 1.6.4.2 References: <1264152287-13866-1-git-send-email-yinghai@kernel.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2656 Lines: 83 add replace_irq_desc() -v2: remove unneeded boundary check in replace_irq_desc Signed-off-by: Yinghai Lu --- kernel/irq/handle.c | 7 ++++++- kernel/irq/internals.h | 6 +----- kernel/irq/numa_migrate.c | 4 ++-- 3 files changed, 9 insertions(+), 8 deletions(-) diff --git a/kernel/irq/handle.c b/kernel/irq/handle.c index 0e823c0..266f798 100644 --- a/kernel/irq/handle.c +++ b/kernel/irq/handle.c @@ -127,7 +127,7 @@ static void init_one_irq_desc(int irq, struct irq_desc *desc, int node) */ DEFINE_RAW_SPINLOCK(sparse_irq_lock); -struct irq_desc **irq_desc_ptrs __read_mostly; +static struct irq_desc **irq_desc_ptrs __read_mostly; static struct irq_desc irq_desc_legacy[NR_IRQS_LEGACY] __cacheline_aligned_in_smp = { [0 ... NR_IRQS_LEGACY-1] = { @@ -192,6 +192,11 @@ struct irq_desc *irq_to_desc(unsigned int irq) return NULL; } +void replace_irq_desc(unsigned int irq, struct irq_desc *desc) +{ + irq_desc_ptrs[irq] = desc; +} + struct irq_desc * __ref irq_to_desc_alloc_node(unsigned int irq, int node) { struct irq_desc *desc; diff --git a/kernel/irq/internals.h b/kernel/irq/internals.h index b2821f0..c63f3bc 100644 --- a/kernel/irq/internals.h +++ b/kernel/irq/internals.h @@ -21,11 +21,7 @@ extern void clear_kstat_irqs(struct irq_desc *desc); extern raw_spinlock_t sparse_irq_lock; #ifdef CONFIG_SPARSE_IRQ -/* irq_desc_ptrs allocated at boot time */ -extern struct irq_desc **irq_desc_ptrs; -#else -/* irq_desc_ptrs is a fixed size array */ -extern struct irq_desc *irq_desc_ptrs[NR_IRQS]; +void replace_irq_desc(unsigned int irq, struct irq_desc *desc); #endif #ifdef CONFIG_PROC_FS diff --git a/kernel/irq/numa_migrate.c b/kernel/irq/numa_migrate.c index 26bac9d..963559d 100644 --- a/kernel/irq/numa_migrate.c +++ b/kernel/irq/numa_migrate.c @@ -70,7 +70,7 @@ static struct irq_desc *__real_move_irq_desc(struct irq_desc *old_desc, raw_spin_lock_irqsave(&sparse_irq_lock, flags); /* We have to check it to avoid races with another CPU */ - desc = irq_desc_ptrs[irq]; + desc = irq_to_desc(irq); if (desc && old_desc != desc) goto out_unlock; @@ -90,7 +90,7 @@ static struct irq_desc *__real_move_irq_desc(struct irq_desc *old_desc, goto out_unlock; } - irq_desc_ptrs[irq] = desc; + replace_irq_desc(irq, desc); raw_spin_unlock_irqrestore(&sparse_irq_lock, flags); /* free the old one */ -- 1.6.4.2 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/