Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751556AbbFCDqP (ORCPT ); Tue, 2 Jun 2015 23:46:15 -0400 Received: from mga11.intel.com ([192.55.52.93]:52906 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752046AbbFCDqD (ORCPT ); Tue, 2 Jun 2015 23:46:03 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.13,544,1427785200"; d="scan'208";a="739877357" From: Jiang Liu To: Thomas Gleixner , Bjorn Helgaas , Benjamin Herrenschmidt , Ingo Molnar , "H. Peter Anvin" , Randy Dunlap , Yinghai Lu , Borislav Petkov , x86@kernel.org, Jiang Liu , Jason Cooper , Kevin Cernekee , Arnd Bergmann Cc: Konrad Rzeszutek Wilk , Tony Luck , linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org, linux-acpi@vger.kernel.org Subject: [Patch v3 31/36] genirq: Move field 'affinity' from struct irq_data into struct irq_common_data Date: Wed, 3 Jun 2015 11:47:50 +0800 Message-Id: <1433303281-27688-1-git-send-email-jiang.liu@linux.intel.com> X-Mailer: git-send-email 1.7.10.4 In-Reply-To: <1433145945-789-32-git-send-email-jiang.liu@linux.intel.com> References: <1433145945-789-32-git-send-email-jiang.liu@linux.intel.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 7080 Lines: 199 Irq affinity mask is per-irq instead of per irqchip, so move it into struct irq_common_data. Signed-off-by: Jiang Liu --- Hi Thomas, This version changes the patch to correctly support bisecting. Thanks! Gerry --- arch/x86/kernel/apic/vector.c | 4 +--- include/linux/irq.h | 12 ++++++------ kernel/irq/irqdesc.c | 9 +++++---- kernel/irq/manage.c | 12 ++++++------ kernel/irq/proc.c | 2 +- 5 files changed, 19 insertions(+), 20 deletions(-) diff --git a/arch/x86/kernel/apic/vector.c b/arch/x86/kernel/apic/vector.c index 7ad911ea4f56..dfa3a5f5b3d3 100644 --- a/arch/x86/kernel/apic/vector.c +++ b/arch/x86/kernel/apic/vector.c @@ -494,10 +494,8 @@ static int apic_set_affinity(struct irq_data *irq_data, err = assign_irq_vector(irq, data, dest); if (err) { - struct irq_data *top = irq_get_irq_data(irq); - if (assign_irq_vector(irq, data, - irq_data_get_affinity_mask(top))) + irq_data_get_affinity_mask(irq_data))) pr_err("Failed to recover vector for irq %d\n", irq); return err; } diff --git a/include/linux/irq.h b/include/linux/irq.h index 91fbf10bdae0..9d01cd8ca8a2 100644 --- a/include/linux/irq.h +++ b/include/linux/irq.h @@ -110,8 +110,8 @@ enum { /* * Return value for chip->irq_set_affinity() * - * IRQ_SET_MASK_OK - OK, core updates irq_data.affinity - * IRQ_SET_MASK_NOCPY - OK, chip did update irq_data.affinity + * IRQ_SET_MASK_OK - OK, core updates irq_common_data.affinity + * IRQ_SET_MASK_NOCPY - OK, chip did update irq_common_data.affinity * IRQ_SET_MASK_OK_DONE - Same as IRQ_SET_MASK_OK for core. Special code to * support stacked irqchips, which indicates skipping * all descendent irqchips. @@ -131,6 +131,7 @@ struct irq_domain; * Use accessor functions to deal with it * @node: node index useful for balancing * @handler_data: per-IRQ data for the irq_chip methods + * @affinity: IRQ affinity on SMP */ struct irq_common_data { unsigned int state_use_accessors; @@ -138,6 +139,7 @@ struct irq_common_data { unsigned int node; #endif void *handler_data; + cpumask_var_t affinity; }; /** @@ -154,7 +156,6 @@ struct irq_common_data { * @chip_data: platform-specific per-chip private data for the chip * methods, to allow shared chip implementations * @msi_desc: MSI descriptor - * @affinity: IRQ affinity on SMP * * The fields here need to overlay the ones in irq_desc until we * cleaned up the direct references and switched everything over to @@ -172,7 +173,6 @@ struct irq_data { #endif void *chip_data; struct msi_desc *msi_desc; - cpumask_var_t affinity; }; /* @@ -660,12 +660,12 @@ static inline struct cpumask *irq_get_affinity_mask(int irq) { struct irq_data *d = irq_get_irq_data(irq); - return d ? d->affinity : NULL; + return d ? d->common->affinity : NULL; } static inline struct cpumask *irq_data_get_affinity_mask(struct irq_data *d) { - return d->affinity; + return d->common->affinity; } unsigned int arch_dynirq_lower_bound(unsigned int from); diff --git a/kernel/irq/irqdesc.c b/kernel/irq/irqdesc.c index 7f881792ad5f..2c39a203f78b 100644 --- a/kernel/irq/irqdesc.c +++ b/kernel/irq/irqdesc.c @@ -38,12 +38,13 @@ static void __init init_irq_default_affinity(void) #ifdef CONFIG_SMP static int alloc_masks(struct irq_desc *desc, gfp_t gfp, int node) { - if (!zalloc_cpumask_var_node(&desc->irq_data.affinity, gfp, node)) + if (!zalloc_cpumask_var_node(&desc->irq_common_data.affinity, + gfp, node)) return -ENOMEM; #ifdef CONFIG_GENERIC_PENDING_IRQ if (!zalloc_cpumask_var_node(&desc->pending_mask, gfp, node)) { - free_cpumask_var(desc->irq_data.affinity); + free_cpumask_var(desc->irq_common_data.affinity); return -ENOMEM; } #endif @@ -52,7 +53,7 @@ static int alloc_masks(struct irq_desc *desc, gfp_t gfp, int node) static void desc_smp_init(struct irq_desc *desc, int node) { - cpumask_copy(desc->irq_data.affinity, irq_default_affinity); + cpumask_copy(desc->irq_common_data.affinity, irq_default_affinity); #ifdef CONFIG_GENERIC_PENDING_IRQ cpumask_clear(desc->pending_mask); #endif @@ -124,7 +125,7 @@ static void free_masks(struct irq_desc *desc) #ifdef CONFIG_GENERIC_PENDING_IRQ free_cpumask_var(desc->pending_mask); #endif - free_cpumask_var(desc->irq_data.affinity); + free_cpumask_var(desc->irq_common_data.affinity); } #else static inline void free_masks(struct irq_desc *desc) { } diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c index f9744853b656..e7688140bfb6 100644 --- a/kernel/irq/manage.c +++ b/kernel/irq/manage.c @@ -190,7 +190,7 @@ int irq_do_set_affinity(struct irq_data *data, const struct cpumask *mask, switch (ret) { case IRQ_SET_MASK_OK: case IRQ_SET_MASK_OK_DONE: - cpumask_copy(data->affinity, mask); + cpumask_copy(desc->irq_common_data.affinity, mask); case IRQ_SET_MASK_OK_NOCOPY: irq_set_thread_affinity(desc); ret = 0; @@ -302,7 +302,7 @@ static void irq_affinity_notify(struct work_struct *work) if (irq_move_pending(&desc->irq_data)) irq_get_pending(cpumask, desc); else - cpumask_copy(cpumask, desc->irq_data.affinity); + cpumask_copy(cpumask, desc->irq_common_data.affinity); raw_spin_unlock_irqrestore(&desc->lock, flags); notify->notify(notify, cpumask); @@ -374,9 +374,9 @@ setup_affinity(unsigned int irq, struct irq_desc *desc, struct cpumask *mask) * one of the targets is online. */ if (irqd_has_set(&desc->irq_data, IRQD_AFFINITY_SET)) { - if (cpumask_intersects(desc->irq_data.affinity, + if (cpumask_intersects(desc->irq_common_data.affinity, cpu_online_mask)) - set = desc->irq_data.affinity; + set = desc->irq_common_data.affinity; else irqd_clear(&desc->irq_data, IRQD_AFFINITY_SET); } @@ -827,8 +827,8 @@ irq_thread_check_affinity(struct irq_desc *desc, struct irqaction *action) * This code is triggered unconditionally. Check the affinity * mask pointer. For CPU_MASK_OFFSTACK=n this is optimized out. */ - if (desc->irq_data.affinity) - cpumask_copy(mask, desc->irq_data.affinity); + if (desc->irq_common_data.affinity) + cpumask_copy(mask, desc->irq_common_data.affinity); else valid = false; raw_spin_unlock_irq(&desc->lock); diff --git a/kernel/irq/proc.c b/kernel/irq/proc.c index 0e97c142ce40..e3a8c9577ba6 100644 --- a/kernel/irq/proc.c +++ b/kernel/irq/proc.c @@ -39,7 +39,7 @@ static struct proc_dir_entry *root_irq_dir; static int show_irq_affinity(int type, struct seq_file *m, void *v) { struct irq_desc *desc = irq_to_desc((long)m->private); - const struct cpumask *mask = desc->irq_data.affinity; + const struct cpumask *mask = desc->irq_common_data.affinity; #ifdef CONFIG_GENERIC_PENDING_IRQ if (irqd_is_setaffinity_pending(&desc->irq_data)) -- 1.7.10.4 -- 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/