From 48325655290869dbcdc356478bde4606d79d600e Mon Sep 17 00:00:00 2001 From: Charles Keepax Date: Fri, 29 May 2020 16:22:16 +0100 Subject: [PATCH] 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: Charles Keepax Link: https://lore.kernel.org/r/20200529152216.9671-1-ckeepax@opensource.cirrus.com Signed-off-by: Mark Brown --- drivers/regulator/core.c | 9 +++++++++ include/trace/events/regulator.h | 32 ++++++++++++++++++++++++++++++++ 2 files changed, 41 insertions(+) diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c index 370c655ad8f6..03154f5b939f 100644 --- a/drivers/regulator/core.c +++ b/drivers/regulator/core.c @@ -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); } } diff --git a/include/trace/events/regulator.h b/include/trace/events/regulator.h index b70583c32c08..72b3ba93b0a5 100644 --- a/include/trace/events/regulator.h +++ b/include/trace/events/regulator.h @@ -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.