linux-kernel - [tip:irq/core] x86/vector: Create named irq domain

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Date:   Thu, 22 Jun 2017 09:42:52 -0700
From:   tip-bot for Thomas Gleixner <tipbot@...or.com>
To:     linux-tip-commits@...r.kernel.org
Cc:     hch@....de, hpa@...or.com, tglx@...utronix.de, mingo@...nel.org,
        peterz@...radead.org, axboe@...nel.dk, keith.busch@...el.com,
        mpe@...erman.id.au, marc.zyngier@....com,
        linux-kernel@...r.kernel.org
Subject: [tip:irq/core] x86/vector: Create named irq domain

Commit-ID:  9d35f859590efa48be51b8ccded6550e0440e2c7
Gitweb:     http://git.kernel.org/tip/9d35f859590efa48be51b8ccded6550e0440e2c7
Author:     Thomas Gleixner <tglx@...utronix.de>
AuthorDate: Tue, 20 Jun 2017 01:37:06 +0200
Committer:  Thomas Gleixner <tglx@...utronix.de>
CommitDate: Thu, 22 Jun 2017 18:21:08 +0200

x86/vector: Create named irq domain

Use the fwnode to create a named domain so diagnosis works.

Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
Cc: Jens Axboe <axboe@...nel.dk>
Cc: Marc Zyngier <marc.zyngier@....com>
Cc: Michael Ellerman <mpe@...erman.id.au>
Cc: Keith Busch <keith.busch@...el.com>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Christoph Hellwig <hch@....de>
Link: http://lkml.kernel.org/r/20170619235443.673635238@linutronix.de
Signed-off-by: Thomas Gleixner <tglx@...utronix.de>

---
 arch/x86/kernel/apic/vector.c | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/arch/x86/kernel/apic/vector.c b/arch/x86/kernel/apic/vector.c
index 6b21b9e..47c5d01 100644
--- a/arch/x86/kernel/apic/vector.c
+++ b/arch/x86/kernel/apic/vector.c
@@ -429,11 +429,16 @@ static void init_legacy_irqs(void) { }
 
 int __init arch_early_irq_init(void)
 {
+	struct fwnode_handle *fn;
+
 	init_legacy_irqs();
 
-	x86_vector_domain = irq_domain_add_tree(NULL, &x86_vector_domain_ops,
-						NULL);
+	fn = irq_domain_alloc_named_fwnode("VECTOR");
+	BUG_ON(!fn);
+	x86_vector_domain = irq_domain_create_tree(fn, &x86_vector_domain_ops,
+						   NULL);
 	BUG_ON(x86_vector_domain == NULL);
+	irq_domain_free_fwnode(fn);
 	irq_set_default_host(x86_vector_domain);
 
 	arch_init_msi_domain(x86_vector_domain);