linux-kernel - [PATCH V2 2/3] firmware: arm_scmi: Add support for marking certain frequencies as boost

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20240227173434.650334-3-quic_sibis@quicinc.com>
Date: Tue, 27 Feb 2024 23:04:33 +0530
From: Sibi Sankar <quic_sibis@...cinc.com>
To: <sudeep.holla@....com>, <cristian.marussi@....com>, <rafael@...nel.org>,
        <viresh.kumar@...aro.org>, <morten.rasmussen@....com>,
        <dietmar.eggemann@....com>, <lukasz.luba@....com>, <sboyd@...nel.org>
CC: <linux-arm-kernel@...ts.infradead.org>, <linux-pm@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <quic_mdtipton@...cinc.com>,
        <linux-arm-msm@...r.kernel.org>, <nm@...com>,
        Sibi Sankar
	<quic_sibis@...cinc.com>
Subject: [PATCH V2 2/3] firmware: arm_scmi: Add support for marking certain frequencies as boost

All opps above the sustained level/frequency are treated as boost, so mark
them accordingly.

Suggested-by: Sudeep Holla <sudeep.holla@....com>
Signed-off-by: Sibi Sankar <quic_sibis@...cinc.com>
---

v2:
* Remove sustained_freq check. [Pierre]
* simplify sustained_freq_khz calculation. [Sudeep]

 drivers/firmware/arm_scmi/perf.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/drivers/firmware/arm_scmi/perf.c b/drivers/firmware/arm_scmi/perf.c
index 981e327e63e3..caf6191df300 100644
--- a/drivers/firmware/arm_scmi/perf.c
+++ b/drivers/firmware/arm_scmi/perf.c
@@ -850,7 +850,7 @@ static int scmi_dvfs_device_opps_add(const struct scmi_protocol_handle *ph,
 				     struct device *dev, u32 domain)
 {
 	int idx, ret;
-	unsigned long freq;
+	unsigned long freq, sustained_freq;
 	struct dev_pm_opp_data data = {};
 	struct perf_dom_info *dom;
 
@@ -858,12 +858,18 @@ static int scmi_dvfs_device_opps_add(const struct scmi_protocol_handle *ph,
 	if (IS_ERR(dom))
 		return PTR_ERR(dom);
 
+	sustained_freq = dom->sustained_freq_khz * 1000UL;
+
 	for (idx = 0; idx < dom->opp_count; idx++) {
 		if (!dom->level_indexing_mode)
 			freq = dom->opp[idx].perf * dom->mult_factor;
 		else
 			freq = dom->opp[idx].indicative_freq * dom->mult_factor;
 
+		/* All opps above the sustained level/frequency are treated as boost */
+		if (freq > sustained_freq)
+			data.turbo = true;
+
 		data.level = dom->opp[idx].perf;
 		data.freq = freq;
 
-- 
2.34.1