From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755578AbcFQNFg (ORCPT ); Fri, 17 Jun 2016 09:05:36 -0400 Received: from mail-wm0-f65.google.com ([74.125.82.65]:34827 "EHLO mail-wm0-f65.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753495AbcFQNFf (ORCPT ); Fri, 17 Jun 2016 09:05:35 -0400 From: John Kacur To: Ingo Molnar , Peter Zijlstra Cc: linux-kernel@vger.kernel.org, John Kacur Subject: [PATCH] Documentation: Correct result of echnoing 5 to smp_affinity Date: Fri, 17 Jun 2016 15:05:15 +0200 Message-Id: <1466168715-8410-1-git-send-email-jkacur@redhat.com> X-Mailer: git-send-email 2.4.11 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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 --- 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 e8d00759bfa5..5b61eeae3f6e 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: -- 2.4.11