Unverified Commit 48325655 authored by Charles Keepax's avatar Charles Keepax Committed by Mark Brown
Browse files

regulator: core: Add regulator bypass trace points 



Add new trace points for the start and end of enabling bypass on a
regulator, to allow monitoring of when regulators are moved into bypass
and how long that takes.

Signed-off-by: default avatarCharles Keepax <ckeepax@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20200529152216.9671-1-ckeepax@opensource.cirrus.com


Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent c1f615e4

drivers/regulator/core.c

+9 −0
Original line number Diff line number Diff line
@@ -4321,6 +4321,7 @@ EXPORT_SYMBOL_GPL(regulator_set_load); 
int regulator_allow_bypass(struct regulator *regulator, bool enable)

{

	struct regulator_dev *rdev = regulator->rdev;

	const char *name = rdev_get_name(rdev);

	int ret = 0;



	if (!rdev->desc->ops->set_bypass)
@@ -4335,18 +4336,26 @@ int regulator_allow_bypass(struct regulator *regulator, bool enable) 
		rdev->bypass_count++;



		if (rdev->bypass_count == rdev->open_count) {

			trace_regulator_bypass_enable(name);



			ret = rdev->desc->ops->set_bypass(rdev, enable);

			if (ret != 0)

				rdev->bypass_count--;

			else

				trace_regulator_bypass_enable_complete(name);

		}



	} else if (!enable && regulator->bypass) {

		rdev->bypass_count--;



		if (rdev->bypass_count != rdev->open_count) {

			trace_regulator_bypass_disable(name);



			ret = rdev->desc->ops->set_bypass(rdev, enable);

			if (ret != 0)

				rdev->bypass_count++;

			else

				trace_regulator_bypass_disable_complete(name);

		}

	}

include/trace/events/regulator.h

+32 −0
Original line number Diff line number Diff line
@@ -70,6 +70,38 @@ DEFINE_EVENT(regulator_basic, regulator_disable_complete, 


);



DEFINE_EVENT(regulator_basic, regulator_bypass_enable,



	TP_PROTO(const char *name),



	TP_ARGS(name)



);



DEFINE_EVENT(regulator_basic, regulator_bypass_enable_complete,



	TP_PROTO(const char *name),



	TP_ARGS(name)



);



DEFINE_EVENT(regulator_basic, regulator_bypass_disable,



	TP_PROTO(const char *name),



	TP_ARGS(name)



);



DEFINE_EVENT(regulator_basic, regulator_bypass_disable_complete,



	TP_PROTO(const char *name),



	TP_ARGS(name)



);



/*

 * Events that take a range of numerical values, mostly for voltages

 * and so on.

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