linux-kernel - [tip:x86/apic] x86, irq: Introduce helpers to access struct irq

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Message-ID: <tip-55a0e2b122c26c7496ea85754bceddc05dba402b@git.kernel.org>
Date:	Fri, 19 Dec 2014 06:07:35 -0800
From:	tip-bot for Jiang Liu <tipbot@...or.com>
To:	linux-tip-commits@...r.kernel.org
Cc:	grant.likely@...aro.org, rjw@...ysocki.net, tglx@...utronix.de,
	tony.luck@...el.com, konrad.wilk@...cle.com,
	jiang.liu@...ux.intel.com, mingo@...nel.org,
	benh@...nel.crashing.org, yinghai@...nel.org, prarit@...hat.com,
	joro@...tes.org, bp@...en8.de, linux-kernel@...r.kernel.org,
	bhelgaas@...gle.com, rdunlap@...radead.org,
	gregkh@...uxfoundation.org, hpa@...or.com
Subject: [tip:x86/apic] x86, irq:
  Introduce helpers to access struct irq_cfg

Commit-ID:  55a0e2b122c26c7496ea85754bceddc05dba402b
Gitweb:     http://git.kernel.org/tip/55a0e2b122c26c7496ea85754bceddc05dba402b
Author:     Jiang Liu <jiang.liu@...ux.intel.com>
AuthorDate: Mon, 27 Oct 2014 16:11:59 +0800
Committer:  Thomas Gleixner <tglx@...utronix.de>
CommitDate: Tue, 16 Dec 2014 14:08:16 +0100

x86, irq: Introduce helpers to access struct irq_cfg

Change irq_cfg() from static to extern, also introduce helper function
irqd_cfg(). Later we can rewrite these two helpers when enabling
hierarchy irqdomain.

Signed-off-by: Jiang Liu <jiang.liu@...ux.intel.com>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>
Cc: Tony Luck <tony.luck@...el.com>
Cc: Joerg Roedel <joro@...tes.org>
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc: Benjamin Herrenschmidt <benh@...nel.crashing.org>
Cc: Rafael J. Wysocki <rjw@...ysocki.net>
Cc: Bjorn Helgaas <bhelgaas@...gle.com>
Cc: Randy Dunlap <rdunlap@...radead.org>
Cc: Yinghai Lu <yinghai@...nel.org>
Cc: Borislav Petkov <bp@...en8.de>
Cc: Prarit Bhargava <prarit@...hat.com>
Cc: Grant Likely <grant.likely@...aro.org>
Link: http://lkml.kernel.org/r/1414397531-28254-9-git-send-email-jiang.liu@linux.intel.com
Signed-off-by: Thomas Gleixner <tglx@...utronix.de>

---
 arch/x86/include/asm/hw_irq.h  | 2 ++
 arch/x86/kernel/apic/io_apic.c | 7 ++++++-
 2 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/arch/x86/include/asm/hw_irq.h b/arch/x86/include/asm/hw_irq.h
index e1acbba..454c9e4 100644
--- a/arch/x86/include/asm/hw_irq.h
+++ b/arch/x86/include/asm/hw_irq.h
@@ -132,6 +132,8 @@ struct irq_cfg {
 	};
 };
 
+extern struct irq_cfg *irq_cfg(unsigned int irq);
+extern struct irq_cfg *irqd_cfg(struct irq_data *irq_data);
 extern void setup_vector_irq(int cpu);
 extern int assign_irq_vector(int, struct irq_cfg *, const struct cpumask *);
 #ifdef CONFIG_SMP
diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c
index ab8ca9327..783468e 100644
--- a/arch/x86/kernel/apic/io_apic.c
+++ b/arch/x86/kernel/apic/io_apic.c
@@ -281,11 +281,16 @@ int __init arch_early_irq_init(void)
 	return 0;
 }
 
-static inline struct irq_cfg *irq_cfg(unsigned int irq)
+struct irq_cfg *irq_cfg(unsigned int irq)
 {
 	return irq_get_chip_data(irq);
 }
 
+struct irq_cfg *irqd_cfg(struct irq_data *irq_data)
+{
+	return irq_data->chip_data;
+}
+
 static struct irq_cfg *alloc_irq_cfg(unsigned int irq, int node)
 {
 	struct irq_cfg *cfg;
--
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