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| author | Yaxiong Tian <tianyaxiong@kylinos.cn> | 2025-12-30 14:15:34 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2026-01-23 11:21:15 +0100 |
| commit | 754cfada1bbcbeeb922e54007c3c3aaaeeacf23e (patch) | |
| tree | 02b71017a8dc19ee9389d22cd545af4da0b27141 /include | |
| parent | 9a88b6c3c8695b708fd83523b3fe5a93e82ef7a4 (diff) | |
| download | linux-754cfada1bbcbeeb922e54007c3c3aaaeeacf23e.tar.gz linux-754cfada1bbcbeeb922e54007c3c3aaaeeacf23e.tar.bz2 linux-754cfada1bbcbeeb922e54007c3c3aaaeeacf23e.zip | |
PM: EM: Fix incorrect description of the cost field in struct em_perf_state
[ Upstream commit 54b603f2db6b95495bc33a8f2bde80f044baff9a ]
Due to commit 1b600da51073 ("PM: EM: Optimize em_cpu_energy() and remove
division"), the logic for energy consumption calculation has been modified.
The actual calculation of cost is 10 * power * max_frequency / frequency
instead of power * max_frequency / frequency.
Therefore, the comment for cost has been updated to reflect the correct
content.
Fixes: 1b600da51073 ("PM: EM: Optimize em_cpu_energy() and remove division")
Signed-off-by: Yaxiong Tian <tianyaxiong@kylinos.cn>
Reviewed-by: Lukasz Luba <lukasz.luba@arm.com>
[ rjw: Added Fixes: tag ]
Link: https://patch.msgid.link/20251230061534.816894-1-tianyaxiong@kylinos.cn
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/energy_model.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/energy_model.h b/include/linux/energy_model.h index 61d50571ad88..ce2db5447d22 100644 --- a/include/linux/energy_model.h +++ b/include/linux/energy_model.h @@ -18,7 +18,7 @@ * @power: The power consumed at this level (by 1 CPU or by a registered * device). It can be a total power: static and dynamic. * @cost: The cost coefficient associated with this level, used during - * energy calculation. Equal to: power * max_frequency / frequency + * energy calculation. Equal to: 10 * power * max_frequency / frequency * @flags: see "em_perf_state flags" description below. */ struct em_perf_state { |