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thermal/debugfs: Create records for cdev states as they get used

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BugLink: https://bugs.launchpad.net/bugs/2071621

[ Upstream commit f4ae18fcb652c6cccc834ded525ac37f91d5cdb1 ]

Because thermal_debug_cdev_state_update() only creates a duration record
for the old state of a cooling device, if its new state is used for the
first time, there will be no record for it and cdev_dt_seq_show() will
not print the duration information for it even though it contains code
to compute the duration value in that case.

Address this by making thermal_debug_cdev_state_update() create a
duration record for the new state if there is none.

Fixes: 755113d767 ("thermal/debugfs: Add thermal cooling device debugfs information")
Reported-by: Lukasz Luba <lukasz.luba@arm.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Lukasz Luba <lukasz.luba@arm.com>
Tested-by: Lukasz Luba <lukasz.luba@arm.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Manuel Diewald <manuel.diewald@canonical.com>
Signed-off-by: Stefan Bader <stefan.bader@canonical.com>
This commit is contained in:
Rafael J. Wysocki
2024-04-25 14:24:10 +02:00
committed by Stefan Bader
parent 36462f88eb
commit 77f1796ce3
1 changed files with 8 additions and 0 deletions
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drivers/thermal/thermal_debugfs.c
+8
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@@ -435,6 +435,14 @@ void thermal_debug_cdev_state_update(const struct thermal_cooling_device *cdev,
}
cdev_dbg->current_state = new_state;
/*
* Create a record for the new state if it is not there, so its
* duration will be printed by cdev_dt_seq_show() as expected if it
* runs before the next state transition.
*/
thermal_debugfs_cdev_record_get(thermal_dbg, cdev_dbg->durations, new_state);
transition = (old_state << 16) | new_state;
/*