linux-kernel - [PATCH V2 3/4] cpufreq: Add Kconfig option to enable/disable have_multiple

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Date:	Mon, 11 Feb 2013 13:20:02 +0530
From:	Viresh Kumar <viresh.kumar@...aro.org>
To:	rjw@...k.pl
Cc:	cpufreq@...r.kernel.org, linux-pm@...r.kernel.org,
	linux-kernel@...r.kernel.org, robin.randhawa@....com,
	Steve.Bannister@....com, Liviu.Dudau@....com,
	charles.garcia-tobin@....com, linaro-dev@...ts.linaro.org,
	francescolavra.fl@...il.com, toddpoynor@...gle.com,
	Viresh Kumar <viresh.kumar@...aro.org>
Subject: [PATCH V2 3/4] cpufreq: Add Kconfig option to enable/disable have_multiple_policies

have_multiple_policies is required by platforms having multiple clock-domains
for cpus, i.e. supporting multiple policies for cpus. This patch adds in a
Kconfig option for enabling execution of this code.

Reported-by: Borislav Petkov <bp@...en8.de>
Signed-off-by: Viresh Kumar <viresh.kumar@...aro.org>
---
 drivers/cpufreq/Kconfig | 3 +++
 include/linux/cpufreq.h | 4 ++++
 2 files changed, 7 insertions(+)

diff --git a/drivers/cpufreq/Kconfig b/drivers/cpufreq/Kconfig
index cbcb21e..e6e6939 100644
--- a/drivers/cpufreq/Kconfig
+++ b/drivers/cpufreq/Kconfig
@@ -23,6 +23,9 @@ config CPU_FREQ_TABLE
 config CPU_FREQ_GOV_COMMON
 	bool
 
+config CPU_FREQ_HAVE_MULTIPLE_POLICIES
+	bool
+
 config CPU_FREQ_STAT
 	tristate "CPU frequency translation statistics"
 	select CPU_FREQ_TABLE
diff --git a/include/linux/cpufreq.h b/include/linux/cpufreq.h
index c5ac9a5..0d84bfa 100644
--- a/include/linux/cpufreq.h
+++ b/include/linux/cpufreq.h
@@ -107,11 +107,13 @@ struct cpufreq_policy {
 	unsigned int		policy; /* see above */
 	struct cpufreq_governor	*governor; /* see below */
 	void			*governor_data;
+#ifdef CONFIG_CPU_FREQ_HAVE_MULTIPLE_POLICIES
 	/* This should be set by init() of platforms having multiple
 	 * clock-domains, i.e.  supporting multiple policies. With this sysfs
 	 * directories of governor would be created in cpu/cpu<num>/cpufreq/
 	 * directory */
 	bool			have_multiple_policies;
+#endif
 
 	struct work_struct	update; /* if update_policy() needs to be
 					 * called, but you're in IRQ context */
@@ -142,9 +144,11 @@ static inline bool policy_is_shared(struct cpufreq_policy *policy)
 static inline struct kobject *
 get_governor_parent_kobj(struct cpufreq_policy *policy)
 {
+#ifdef CONFIG_CPU_FREQ_HAVE_MULTIPLE_POLICIES
 	if (policy->have_multiple_policies)
 		return &policy->kobj;
 	else
+#endif
 		return cpufreq_global_kobject;
 }
 
-- 
1.7.12.rc2.18.g61b472e


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