From: Mario Limonciello <mario.limonciello@amd.com>
To: "Gautham R . Shenoy" <gautham.shenoy@amd.com>
Cc: Perry Yuan <perry.yuan@amd.com>, <linux-kernel@vger.kernel.org>,
<linux-pm@vger.kernel.org>,
Dhananjay Ugwekar <Dhananjay.Ugwekar@amd.com>,
Mario Limonciello <mario.limonciello@amd.com>
Subject: [PATCH 06/15] cpufreq/amd-pstate: Use boost numerator for upper bound of frequencies
Date: Thu, 5 Dec 2024 16:28:38 -0600 [thread overview]
Message-ID: <20241205222847.7889-7-mario.limonciello@amd.com> (raw)
In-Reply-To: <20241205222847.7889-1-mario.limonciello@amd.com>
commit 18d9b5227121 ("cpufreq/amd-pstate: Use nominal perf for limits
when boost is disabled") introduced different semantics for min/max limits
based upon whether the user turned off boost from sysfs.
This however is not necessary when the highest perf value is the boost
numerator.
Suggested-by: Dhananjay Ugwekar <Dhananjay.Ugwekar@amd.com>
Fixes: 18d9b5227121 ("cpufreq/amd-pstate: Use nominal perf for limits when boost is disabled")
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
---
drivers/cpufreq/amd-pstate.c | 13 +++++--------
1 file changed, 5 insertions(+), 8 deletions(-)
diff --git a/drivers/cpufreq/amd-pstate.c b/drivers/cpufreq/amd-pstate.c
index 738f63d70546f..14bd6faa3d730 100644
--- a/drivers/cpufreq/amd-pstate.c
+++ b/drivers/cpufreq/amd-pstate.c
@@ -601,16 +601,13 @@ static int amd_pstate_verify(struct cpufreq_policy_data *policy_data)
static int amd_pstate_update_min_max_limit(struct cpufreq_policy *policy)
{
- u32 max_limit_perf, min_limit_perf, lowest_perf, max_perf;
+ u32 max_limit_perf, min_limit_perf, lowest_perf, max_perf, max_freq;
struct amd_cpudata *cpudata = policy->driver_data;
- if (cpudata->boost_supported && !policy->boost_enabled)
- max_perf = READ_ONCE(cpudata->nominal_perf);
- else
- max_perf = READ_ONCE(cpudata->highest_perf);
-
- max_limit_perf = div_u64(policy->max * max_perf, policy->cpuinfo.max_freq);
- min_limit_perf = div_u64(policy->min * max_perf, policy->cpuinfo.max_freq);
+ max_perf = READ_ONCE(cpudata->highest_perf);
+ max_freq = READ_ONCE(cpudata->max_freq);
+ max_limit_perf = div_u64(policy->max * max_perf, max_freq);
+ min_limit_perf = div_u64(policy->min * max_perf, max_freq);
lowest_perf = READ_ONCE(cpudata->lowest_perf);
if (min_limit_perf < lowest_perf)
--
2.43.0
next prev parent reply other threads:[~2024-12-05 22:29 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-12-05 22:28 [PATCH 00/15] amd-pstate 6.14 cleanups and improvements Mario Limonciello
2024-12-05 22:28 ` [PATCH 01/15] cpufreq/amd-pstate: Add trace event for EPP perf updates Mario Limonciello
2024-12-06 5:05 ` Yuan, Perry
2024-12-06 5:44 ` Gautham R. Shenoy
2024-12-05 22:28 ` [PATCH 02/15] cpufreq/amd-pstate: convert mutex use to guard() Mario Limonciello
2024-12-06 6:15 ` Gautham R. Shenoy
2024-12-05 22:28 ` [PATCH 03/15] cpufreq/amd-pstate: Drop cached epp_policy variable Mario Limonciello
2024-12-06 6:16 ` Gautham R. Shenoy
2024-12-05 22:28 ` [PATCH 04/15] cpufreq/amd-pstate: Use FIELD_PREP and FIELD_GET macros Mario Limonciello
2024-12-06 6:21 ` Gautham R. Shenoy
2024-12-05 22:28 ` [PATCH 05/15] cpufreq/amd-pstate: Store the boost numerator as highest perf again Mario Limonciello
2024-12-06 6:25 ` Gautham R. Shenoy
2024-12-05 22:28 ` Mario Limonciello [this message]
2024-12-06 6:27 ` [PATCH 06/15] cpufreq/amd-pstate: Use boost numerator for upper bound of frequencies Gautham R. Shenoy
2024-12-05 22:28 ` [PATCH 07/15] cpufreq/amd-pstate: Only update the cached value in msr_set_epp() on success Mario Limonciello
2024-12-06 6:32 ` Gautham R. Shenoy
2024-12-05 22:28 ` [PATCH 08/15] cpufreq/amd-pstate: store all values in cpudata struct in khz Mario Limonciello
2024-12-06 6:43 ` Gautham R. Shenoy
2024-12-05 22:28 ` [PATCH 09/15] cpufreq/amd-pstate: Change amd_pstate_update_perf() to return an int Mario Limonciello
2024-12-06 6:43 ` Gautham R. Shenoy
2024-12-05 22:28 ` [PATCH 10/15] cpufreq/amd-pstate: Move limit updating code Mario Limonciello
2024-12-06 3:10 ` kernel test robot
2024-12-06 15:19 ` Gautham R. Shenoy
2024-12-05 22:28 ` [PATCH 11/15] cpufreq/amd-pstate: Cache EPP value and use that everywhere Mario Limonciello
2024-12-06 16:14 ` Gautham R. Shenoy
2024-12-06 16:16 ` Mario Limonciello
2024-12-05 22:28 ` [PATCH 12/15] cpufreq/amd-pstate: Always write EPP value when updating perf Mario Limonciello
2024-12-05 22:28 ` [PATCH 13/15] cpufreq/amd-pstate: Check if CPPC request has changed before writing to the MSR or shared memory Mario Limonciello
2024-12-05 22:28 ` [PATCH 14/15] cpufreq/amd-pstate: Drop ret variable from amd_pstate_set_energy_pref_index() Mario Limonciello
2024-12-05 22:28 ` [PATCH 15/15] cpufreq/amd-pstate: Set different default EPP policy for Epyc and Ryzen Mario Limonciello
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