From: Yu-Che Cheng Date: Wed, 19 Feb 2025 07:07:48 +0000 (+0800) Subject: thermal: gov_power_allocator: Fix incorrect calculation in divvy_up_power() X-Git-Tag: v6.14-rc5~10^2~2 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=4ecaa75771a75f2b78a431bf67dea165d19d72a6;p=thirdparty%2Fkernel%2Fstable.git thermal: gov_power_allocator: Fix incorrect calculation in divvy_up_power() divvy_up_power() should use weighted_req_power instead of req_power to calculate granted_power. Otherwise, granted_power may be unexpected as the denominator total_req_power is a weighted sum. This is a mistake made during the previous refactor. Replace req_power with weighted_req_power in divvy_up_power() calculation. Fixes: 912e97c67cc3 ("thermal: gov_power_allocator: Move memory allocation out of throttle()") Signed-off-by: Yu-Che Cheng Reviewed-by: Lukasz Luba Link: https://patch.msgid.link/20250219-fix-power-allocator-calc-v1-1-48b860291919@chromium.org [ rjw: Subject and changelog edits ] Signed-off-by: Rafael J. Wysocki --- diff --git a/drivers/thermal/gov_power_allocator.c b/drivers/thermal/gov_power_allocator.c index 3b644de3292e2..3b626db55b2b9 100644 --- a/drivers/thermal/gov_power_allocator.c +++ b/drivers/thermal/gov_power_allocator.c @@ -370,7 +370,7 @@ static void divvy_up_power(struct power_actor *power, int num_actors, for (i = 0; i < num_actors; i++) { struct power_actor *pa = &power[i]; - u64 req_range = (u64)pa->req_power * power_range; + u64 req_range = (u64)pa->weighted_req_power * power_range; pa->granted_power = DIV_ROUND_CLOSEST_ULL(req_range, total_req_power);