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Commit 6070b5de authored by Satyam Sharma's avatar Satyam Sharma Committed by Dave Jones
Browse files

[CPUFREQ] implement !CONFIG_CPU_FREQ stub for cpufreq_unregister_notifier() 



Callsites such as arch/powerpc/oprofile/op_model_cell.c are having to
open-code #ifdef CONFIG_CPU_FREQ only to be able to get at the full definition
of cpufreq_unregister_notifier(), because no empty stub is available for the
!CONFIG_CPU_FREQ case.  Let's provide one, to be able to remove such #ifdef's
from the rest of the kernel tree -- those will come in a subsequent patch.

Signed-off-by: default avatarSatyam Sharma <satyam@infradead.org>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarDave Jones <davej@redhat.com>
parent dd184a01

include/linux/cpufreq.h

+15 −3
Original line number Diff line number Diff line
@@ -32,12 +32,24 @@ 
 *                     CPUFREQ NOTIFIER INTERFACE                    *

 *********************************************************************/



int cpufreq_register_notifier(struct notifier_block *nb, unsigned int list);

int cpufreq_unregister_notifier(struct notifier_block *nb, unsigned int list);



#define CPUFREQ_TRANSITION_NOTIFIER	(0)

#define CPUFREQ_POLICY_NOTIFIER		(1)



#ifdef CONFIG_CPU_FREQ

int cpufreq_register_notifier(struct notifier_block *nb, unsigned int list);

int cpufreq_unregister_notifier(struct notifier_block *nb, unsigned int list);

#else		/* CONFIG_CPU_FREQ */

static inline int cpufreq_register_notifier(struct notifier_block *nb,

						unsigned int list)

{

	return 0;

}

static inline int cpufreq_unregister_notifier(struct notifier_block *nb,

						unsigned int list)

{

	return 0;

}

#endif		/* CONFIG_CPU_FREQ */



/* if (cpufreq_driver->target) exists, the ->governor decides what frequency

 * within the limits is used. If (cpufreq_driver->setpolicy> exists, these