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authorCharles Keepax <ckeepax@opensource.cirrus.com>2020-05-29 18:22:16 +0300
committerMark Brown <broonie@kernel.org>2020-05-29 19:17:02 +0300
commit48325655290869dbcdc356478bde4606d79d600e (patch)
treec84e3c3d616627882cb51297c864f2a7d694acdf /drivers/regulator
parentc1f615e4f463b1620fff51d1c08a5e83c1683d6b (diff)
downloadlinux-48325655290869dbcdc356478bde4606d79d600e.tar.xz
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 <ckeepax@opensource.cirrus.com> Link: https://lore.kernel.org/r/20200529152216.9671-1-ckeepax@opensource.cirrus.com Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers/regulator')
-rw-r--r--drivers/regulator/core.c9
1 files changed, 9 insertions, 0 deletions
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);
}
}