From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751615AbdIMVey (ORCPT ); Wed, 13 Sep 2017 17:34:54 -0400 Received: from Galois.linutronix.de ([146.0.238.70]:40005 "EHLO Galois.linutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751512AbdIMVep (ORCPT ); Wed, 13 Sep 2017 17:34:45 -0400 Message-Id: <20170913213152.512937505@linutronix.de> User-Agent: quilt/0.63-1 Date: Wed, 13 Sep 2017 23:29:06 +0200 From: Thomas Gleixner To: LKML Cc: Ingo Molnar , Peter Anvin , Marc Zyngier , Peter Zijlstra , Borislav Petkov , Chen Yu , Rui Zhang , "Rafael J. Wysocki" , Len Brown , Dan Williams , Christoph Hellwig , Paolo Bonzini , Joerg Roedel , Boris Ostrovsky , Juergen Gross , Tony Luck , "K. Y. Srinivasan" , Alok Kataria , Steven Rostedt , Arjan van de Ven Subject: [patch 04/52] irqdomain/debugfs: Provide domain specific debug callback References: <20170913212902.530704676@linutronix.de> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-15 Content-Disposition: inline; filename=irqdomain-debugfs--Provide-domain-specific-debug-callback.patch Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Some interrupt domains like the X86 vector domain has special requirements for debugging, like showing the vector usage on the CPUs. Add a callback to the irqdomain ops which can be filled in by domains which require it and add conditional invocations to the irqdomain and the per irq debug files. Signed-off-by: Thomas Gleixner --- include/linux/irqdomain.h | 6 +++++- kernel/irq/debugfs.c | 2 ++ kernel/irq/irqdomain.c | 2 ++ 3 files changed, 9 insertions(+), 1 deletion(-) Index: b/include/linux/irqdomain.h =================================================================== --- a/include/linux/irqdomain.h +++ b/include/linux/irqdomain.h @@ -40,6 +40,7 @@ struct of_device_id; struct irq_chip; struct irq_data; struct cpumask; +struct seq_file; /* Number of irqs reserved for a legacy isa controller */ #define NUM_ISA_INTERRUPTS 16 @@ -104,7 +105,6 @@ struct irq_domain_ops { int (*xlate)(struct irq_domain *d, struct device_node *node, const u32 *intspec, unsigned int intsize, unsigned long *out_hwirq, unsigned int *out_type); - #ifdef CONFIG_IRQ_DOMAIN_HIERARCHY /* extended V2 interfaces to support hierarchy irq_domains */ int (*alloc)(struct irq_domain *d, unsigned int virq, @@ -116,6 +116,10 @@ struct irq_domain_ops { int (*translate)(struct irq_domain *d, struct irq_fwspec *fwspec, unsigned long *out_hwirq, unsigned int *out_type); #endif +#ifdef CONFIG_GENERIC_IRQ_DEBUGFS + void (*debug_show)(struct seq_file *m, struct irq_domain *d, + struct irq_data *irqd, int ind); +#endif }; extern struct irq_domain_ops irq_generic_chip_ops; Index: b/kernel/irq/debugfs.c =================================================================== --- a/kernel/irq/debugfs.c +++ b/kernel/irq/debugfs.c @@ -81,6 +81,8 @@ irq_debug_show_data(struct seq_file *m, data->domain ? data->domain->name : ""); seq_printf(m, "%*shwirq: 0x%lx\n", ind + 1, "", data->hwirq); irq_debug_show_chip(m, data, ind + 1); + if (data->domain && data->domain->ops && data->domain->ops->debug_show) + data->domain->ops->debug_show(m, NULL, data, ind + 1); #ifdef CONFIG_IRQ_DOMAIN_HIERARCHY if (!data->parent_data) return; Index: b/kernel/irq/irqdomain.c =================================================================== --- a/kernel/irq/irqdomain.c +++ b/kernel/irq/irqdomain.c @@ -1810,6 +1810,8 @@ irq_domain_debug_show_one(struct seq_fil d->revmap_size + d->revmap_direct_max_irq); seq_printf(m, "%*smapped: %u\n", ind + 1, "", d->mapcount); seq_printf(m, "%*sflags: 0x%08x\n", ind +1 , "", d->flags); + if (d->ops && d->ops->debug_show) + d->ops->debug_show(m, d, NULL, ind + 1); #ifdef CONFIG_IRQ_DOMAIN_HIERARCHY if (!d->parent) return;