linux-kernel - [PATCH 13/19] smart: nosmart boot option

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Message-Id: <1409848265-17150-13-git-send-email-klamm@yandex-team.ru>
Date:	Thu,  4 Sep 2014 20:30:59 +0400
From:	klamm@...dex-team.ru
To:	peterz@...radead.org, mingo@...hat.com,
	linux-kernel@...r.kernel.org
Cc:	stfomichev@...dex-team.ru, Roman Gushchin <klamm@...dex-team.ru>
Subject: [PATCH 13/19] smart: nosmart boot option

From: Roman Gushchin <klamm@...dex-team.ru>

This patch introduces nosmart boot option, that is intended to disable
smart globally at boot time.

Signed-off-by: Roman Gushchin <klamm@...dex-team.ru>
---
 kernel/sched/rt.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/kernel/sched/rt.c b/kernel/sched/rt.c
index a3fd83c..ff7751a 100644
--- a/kernel/sched/rt.c
+++ b/kernel/sched/rt.c
@@ -2319,6 +2319,13 @@ static int cpu_with_number(int number, cpumask_t *mask)
 	return -1;
 }
 
+static int __init nosmart_setup(char *str)
+{
+	static_key_slow_dec(&__smart_enabled);
+	return 0;
+}
+early_param("nosmart", nosmart_setup);
+
 void build_smart_topology(void)
 {
 	int cpu;
-- 
1.9.3

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