linux-kernel - RE: [PATCH 09/14] x86_64 irq: Begin consolidating per

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Date:	Tue, 27 Feb 2007 13:28:07 -0800
From:	"Lu, Yinghai" <yinghai.lu@....com>
To:	ebiederm@...ssion.com, "Andrew Morton" <akpm@...l.org>
cc:	linux-kernel@...r.kernel.org,
	"Zwane Mwaikambo" <zwane@...radead.org>,
	"Ashok Raj" <ashok.raj@...el.com>, "Ingo Molnar" <mingo@...e.hu>,
	"Natalie Protasevich" <protasnb@...il.com>,
	"Andi Kleen" <ak@...e.de>,
	"Siddha, Suresh B" <suresh.b.siddha@...el.com>,
	"Linus Torvalds" <torvalds@...ux-foundation.org>
Subject: RE: [PATCH 09/14] x86_64 irq: Begin consolidating per_irq data
 in structures.


-----Original Message-----
From: ebiederm@...ssion.com [mailto:ebiederm@...ssion.com] 
Sent: Friday, February 23, 2007 3:33 AM

>+struct irq_cfg {
>+	cpumask_t domain;
>+	u8 vector;
>+};
>+
>+/* irq_cfg is indexed by the sum of all RTEs in all I/O APICs. */
>+struct irq_cfg irq_cfg[NR_IRQS] __read_mostly = {
>+	[0] = { .domain = CPU_MASK_ALL, .vector = FIRST_EXTERNAL_VECTOR
+ 0 },
>+	[1] = { .domain = CPU_MASK_ALL, .vector = FIRST_EXTERNAL_VECTOR
+ 1 },
>+	[2] = { .domain = CPU_MASK_ALL, .vector = FIRST_EXTERNAL_VECTOR
+ 2 },
>+	[3] = { .domain = CPU_MASK_ALL, .vector = FIRST_EXTERNAL_VECTOR
+ 3 },
>+	[4] = { .domain = CPU_MASK_ALL, .vector = FIRST_EXTERNAL_VECTOR
+ 4 },
>+	[5] = { .domain = CPU_MASK_ALL, .vector = FIRST_EXTERNAL_VECTOR
+ 5 },
>+	[6] = { .domain = CPU_MASK_ALL, .vector = FIRST_EXTERNAL_VECTOR
+ 6 },
>+	[7] = { .domain = CPU_MASK_ALL, .vector = FIRST_EXTERNAL_VECTOR
+ 7 },
>+	[8] = { .domain = CPU_MASK_ALL, .vector = FIRST_EXTERNAL_VECTOR
+ 8 },
>+	[9] = { .domain = CPU_MASK_ALL, .vector = FIRST_EXTERNAL_VECTOR
+ 9 },
>+	[10] = { .domain = CPU_MASK_ALL, .vector = FIRST_EXTERNAL_VECTOR
+ 10 },
>+	[11] = { .domain = CPU_MASK_ALL, .vector = FIRST_EXTERNAL_VECTOR
+ 11 },
>+	[12] = { .domain = CPU_MASK_ALL, .vector = FIRST_EXTERNAL_VECTOR
+ 12 },
>+	[13] = { .domain = CPU_MASK_ALL, .vector = FIRST_EXTERNAL_VECTOR
+ 13 },
>+	[14] = { .domain = CPU_MASK_ALL, .vector = FIRST_EXTERNAL_VECTOR
+ 14 },
>+	[15] = { .domain = CPU_MASK_ALL, .vector = FIRST_EXTERNAL_VECTOR
+ 15 },
>+};
>+
> static int assign_irq_vector(int irq, cpumask_t mask, cpumask_t
*result);

Why not use

IRQ0_VECTOR... IRQ15_VECTOR here. 

YH


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