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Wysocki" , Bjorn Andersson , Konrad Dybcio , Abel Vesa , Daniel Lezcano Cc: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org, linux-arm-msm@vger.kernel.org, Maulik Shah X-Mailer: b4 0.15.2 X-Developer-Signature: v=1; a=ed25519-sha256; t=1791214188; l=2399; i=maulik.shah@oss.qualcomm.com; s=20240109; h=from:subject:message-id; bh=uqTHWyaK670j38VSC6Vk5jxeyMj2fpngghwnVdDV3Rg=; b=DS9eQ9mrSjJ6h49oPLT0m/ne5pIR7xiz2qq0Bdsl7rVRRBxBjDV695swIh0H5xqpJl4eMqzQ3 wmWtvAaaEDsAX5dYshhcJIbeEZlZmzMgMV9ocFo5rTKXRY+SIbw5a4b X-Developer-Key: i=maulik.shah@oss.qualcomm.com; a=ed25519; pk=bd9h5FIIliUddIk8p3BlQWBlzKEQ/YW5V+fe759hTWQ= X-Proofpoint-GUID: rcZJFE7GI-UL_e6yRAT_4WgfCCbDCMoq X-Proofpoint-ORIG-GUID: rcZJFE7GI-UL_e6yRAT_4WgfCCbDCMoq X-Authority-Analysis: v=2.4 cv=A6b5rKWG c=1 sm=1 tr=0 ts=6ac3c27c cx=c_pps a=WW5sKcV1LcKqjgzy2JUPuA==:117 a=fChuTYTh2wq5r3m49p7fHw==:17 a=IkcTkHD0fZMA:10 a=660iZSQnnn4A:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=yOCtJkima9RkubShWh1s:22 a=EUspDBNiAAAA:8 a=XIWP2vTyFktR7zITobcA:9 a=QEXdDO2ut3YA:10 a=OpyuDcXvxspvyRM73sMx:22 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYxMDA1MDA2MCBTYWx0ZWRfX7cI5X0xCvusF BLSgju5li6Spa2pBMXmnpJU3ezUHEv9+7hKAudsk8VwSIvYa3RZK20+eheIn8QsFF0EQF13jmOu Dawl1s1wJl2duiq52RJWDa1EIwXLWfG4QwpQPABx+E7CNQGeCposzSHgm5K0KZ+xrZEfwF3zmXC J+NdO6FTpAY5GZoecaeVWolxO4ajmHnuyKzws60+CvOgHC2dJ+7jFLReVwMwhD48cadFbgf0oYM 2m1obQNo17LdHnNv8MGeHkT7rI2gcCR2eV3symRxrSG8l9YoApgKtrYfcLuRiR53a5CrxX/EaxY rDsS8yV6Bpf5Iok8L0fPV8WwfyZ6w+7Gwq5yrjt6KppvO5o0idstm43lzoaRDLefegfdGfYmg8J 8F6ycHOlhkJvtLiSwzeYKtNmvvD9x5lyeIdidImEbDmhHLQWl4r1TSiG3KguwOomXK38D1e9bGF X6FC1jxxSaDsNkY4Xmw== X-Proofpoint-Spam-Info: AW1haW4tMjYxMDA1MDA2MCBTYWx0ZWRfX99ST+Dsx7U4z xx++z+4yE93jUCmAy30R5bWhFwV6Pbe6l5zWYXvdtAFXml2KPYrFm4a5v7n66bRbiUw0hC77VTm 9uiUbodLbnH8qLukeKHqTa2Te9klWkw= X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1176,Hydra:6.1.134,FMLib:17.12.100.49 definitions=2026-10-05_04,2026-10-05_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1015 spamscore=0 lowpriorityscore=0 bulkscore=0 suspectscore=0 priorityscore=1501 impostorscore=0 phishscore=0 malwarescore=0 adultscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2609040000 definitions=main-2610050060 Some domain idle states require system-wide coordination and should not be selected during regular CPU idle. However those states remain valid for system-wide suspend like s2idle. Add a per-state system_state boolean and populate it from the system-state property. Make the genpd governor skip these states during CPU idle. Leave the system wide suspend path unchanged so s2idle can select them. Assisted-by: Codex:GPT-6 Signed-off-by: Maulik Shah --- drivers/pmdomain/core.c | 2 ++ drivers/pmdomain/governor.c | 6 ++++++ include/linux/pm_domain.h | 1 + 3 files changed, 9 insertions(+) diff --git a/drivers/pmdomain/core.c b/drivers/pmdomain/core.c index 964e44c2f78f..288c0deb2340 100644 --- a/drivers/pmdomain/core.c +++ b/drivers/pmdomain/core.c @@ -3701,6 +3701,8 @@ static int genpd_parse_state(struct genpd_power_state *genpd_state, if (!err) genpd_state->residency_ns = 1000LL * residency; + genpd_state->system_state = of_property_read_bool(state_node, "system-state"); + err = of_property_read_string(state_node, "idle-state-name", &genpd_state->name); if (err) diff --git a/drivers/pmdomain/governor.c b/drivers/pmdomain/governor.c index 38bba24ec26e..7684f9eecf85 100644 --- a/drivers/pmdomain/governor.c +++ b/drivers/pmdomain/governor.c @@ -185,6 +185,9 @@ static bool __default_power_down_ok(struct dev_pm_domain *pd, s64 min_off_time_ns; s64 off_on_time_ns; + if (genpd->states[state].system_state) + return false; + off_on_time_ns = genpd->states[state].power_off_latency_ns + genpd->states[state].power_on_latency_ns; @@ -407,6 +410,9 @@ static bool cpu_power_down_ok(struct dev_pm_domain *pd) */ i = genpd->state_idx; do { + if (genpd->states[i].system_state) + continue; + if ((idle_duration_ns >= (genpd->states[i].residency_ns + genpd->states[i].power_off_latency_ns)) && (global_constraint >= (genpd->states[i].power_on_latency_ns + diff --git a/include/linux/pm_domain.h b/include/linux/pm_domain.h index 14e0e346c610..d9b3e67042e5 100644 --- a/include/linux/pm_domain.h +++ b/include/linux/pm_domain.h @@ -188,6 +188,7 @@ struct genpd_power_state { s64 power_off_latency_ns; s64 power_on_latency_ns; s64 residency_ns; + bool system_state; u64 usage; u64 rejected; u64 above; -- 2.43.0