linux-kernel - [tip:irq/core] irq/Documentation: Correct result of echnoing 5 to smp

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Message-ID: <tip-99e9d958726c04cec3e36902d8583fdd8cb5b1bb@git.kernel.org>
Date:	Sun, 10 Jul 2016 08:00:01 -0700
From:	tip-bot for John Kacur <tipbot@...or.com>
To:	linux-tip-commits@...r.kernel.org
Cc:	torvalds@...ux-foundation.org, hpa@...or.com, mingo@...nel.org,
	jkacur@...hat.com, peterz@...radead.org, tglx@...utronix.de,
	linux-kernel@...r.kernel.org
Subject: [tip:irq/core] irq/Documentation: Correct result of echnoing 5 to
 smp_affinity

Commit-ID:  99e9d958726c04cec3e36902d8583fdd8cb5b1bb
Gitweb:     http://git.kernel.org/tip/99e9d958726c04cec3e36902d8583fdd8cb5b1bb
Author:     John Kacur <jkacur@...hat.com>
AuthorDate: Fri, 17 Jun 2016 15:05:15 +0200
Committer:  Ingo Molnar <mingo@...nel.org>
CommitDate: Sun, 10 Jul 2016 16:55:04 +0200

irq/Documentation: Correct result of echnoing 5 to smp_affinity

This command:

  echo 5 > /proc/irq/10/smp_affinity

means only the first and third (not fourth) CPUs can handle irqs
That is, CPU0 is the first CPU and CPU2 is the third cpu

Signed-off-by: John Kacur <jkacur@...hat.com>
Cc: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Thomas Gleixner <tglx@...utronix.de>
Link: http://lkml.kernel.org/r/1466168715-8410-1-git-send-email-jkacur@redhat.com
Signed-off-by: Ingo Molnar <mingo@...nel.org>
---
 Documentation/filesystems/proc.txt | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Documentation/filesystems/proc.txt b/Documentation/filesystems/proc.txt
index e8d0075..5b61eea 100644
--- a/Documentation/filesystems/proc.txt
+++ b/Documentation/filesystems/proc.txt
@@ -725,7 +725,7 @@ IRQ, you can set it by doing:
   > echo 1 > /proc/irq/10/smp_affinity
 
 This means that only the first CPU will handle the IRQ, but you can also echo
-5 which means that only the first and fourth CPU can handle the IRQ.
+5 which means that only the first and third CPU can handle the IRQ.
 
 The contents of each smp_affinity file is the same by default: