linux-kernel - [PATCH v2 4/4] x86, mwaitt: add documents of delay option

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Message-ID: <1433819621-15093-5-git-send-email-ray.huang@amd.com>
Date:	Tue, 9 Jun 2015 11:13:41 +0800
From:	Huang Rui <ray.huang@....com>
To:	Borislav Petkov <bp@...e.de>,
	Andy Lutomirski <luto@...capital.net>,
	Thomas Gleixner <tglx@...utronix.de>,
	Peter Zijlstra <peterz@...radead.org>,
	"Rafael J. Wysocki" <rjw@...ysocki.net>,
	Len Brown <lenb@...nel.org>,
	"John Stultz" <john.stultz@...aro.org>,
	Frédéric Weisbecker <fweisbec@...il.com>
CC:	<linux-kernel@...r.kernel.org>, <x86@...nel.org>,
	Fengguang Wu <fengguang.wu@...el.com>,
	Aaron Lu <aaron.lu@...el.com>,
	Suravee Suthikulanit <suravee.suthikulpanit@....com>,
	Tony Li <tony.li@....com>, Ken Xue <ken.xue@....com>,
	Huang Rui <ray.huang@....com>
Subject: [PATCH v2 4/4] x86, mwaitt: add documents of delay option

This patch adds a description in the kerenel parameters documentation
for "delay=" method. The default case is TSC delay.

Signed-off-by: Huang Rui <ray.huang@....com>
---
 Documentation/kernel-parameters.txt |    7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index 89ebe00..deca146 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -867,6 +867,13 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
 			Defaults to the default architecture's huge page size
 			if not specified.
 
+	delay=		[X86]
+			Format: { "tsc", "loop", "mwaitx" }
+			tsc	use tsc delay method
+			loop	use loop delay method
+			mwaitx	use mwaitx delay method
+			default: tsc.
+
 	dhash_entries=	[KNL]
 			Set number of hash buckets for dentry cache.
 
-- 
1.7.9.5

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