Commit a62f68f5 authored by Rafael J. Wysocki's avatar Rafael J. Wysocki
Browse files

cpufreq: Introduce cpufreq_driver_test_flags() 



Add a helper function to test the flags of the cpufreq driver in use
againt a given flags mask.

In particular, this will be needed to test the
CPUFREQ_NEED_UPDATE_LIMITS cpufreq driver flag in the schedutil
governor.

Signed-off-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
parent 00d43947

drivers/cpufreq/cpufreq.c

+12 −0
Original line number Diff line number Diff line
@@ -1907,6 +1907,18 @@ void cpufreq_resume(void) 
	}

}



/**

 * cpufreq_driver_test_flags - Test cpufreq driver's flags against given ones.

 * @flags: Flags to test against the current cpufreq driver's flags.

 *

 * Assumes that the driver is there, so callers must ensure that this is the

 * case.

 */

bool cpufreq_driver_test_flags(u16 flags)

{

	return !!(cpufreq_driver->flags & flags);

}



/**

 *	cpufreq_get_current_driver - return current driver's name

 *

include/linux/cpufreq.h

+1 −0
Original line number Diff line number Diff line
@@ -433,6 +433,7 @@ struct cpufreq_driver { 
int cpufreq_register_driver(struct cpufreq_driver *driver_data);

int cpufreq_unregister_driver(struct cpufreq_driver *driver_data);



bool cpufreq_driver_test_flags(u16 flags);

const char *cpufreq_get_current_driver(void);

void *cpufreq_get_driver_data(void);