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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 4/4] cpufreq/amd-pstate: Drop needless EPP initialization
Date: Sat, 12 Oct 2024 12:45:19 -0500	[thread overview]
Message-ID: <20241012174519.897-4-mario.limonciello@amd.com> (raw)
In-Reply-To: <20241012174519.897-1-mario.limonciello@amd.com>

The EPP value doesn't need to be cached to the CPPC request in
amd_pstate_epp_update_limit() because it's passed as an argument
at the end to amd_pstate_set_epp() and stored at that time.

Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
---
 drivers/cpufreq/amd-pstate.c | 6 ------
 1 file changed, 6 deletions(-)

diff --git a/drivers/cpufreq/amd-pstate.c b/drivers/cpufreq/amd-pstate.c
index 8d2541f2c74b..90868c8b214e 100644
--- a/drivers/cpufreq/amd-pstate.c
+++ b/drivers/cpufreq/amd-pstate.c
@@ -1528,12 +1528,6 @@ static int amd_pstate_epp_update_limit(struct cpufreq_policy *policy)
 	if (cpudata->policy == CPUFREQ_POLICY_PERFORMANCE)
 		epp = 0;
 
-	/* Set initial EPP value */
-	if (cpu_feature_enabled(X86_FEATURE_CPPC)) {
-		value &= ~GENMASK_ULL(31, 24);
-		value |= (u64)epp << 24;
-	}
-
 	WRITE_ONCE(cpudata->cppc_req_cached, value);
 	return amd_pstate_set_epp(cpudata, epp);
 }
-- 
2.43.0


  parent reply	other threads:[~2024-10-12 17:46 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-10-12 17:45 [PATCH 1/4] cpufreq/amd-pstate: Use nominal perf for limits when boost is disabled Mario Limonciello
2024-10-12 17:45 ` [PATCH 2/4] cpufreq/amd-pstate: Don't update CPPC request in amd_pstate_cpu_boost_update() Mario Limonciello
2024-10-16  4:42   ` Yuan, Perry
2024-10-16  9:50     ` Gautham R. Shenoy
2024-10-12 17:45 ` [PATCH 3/4] cpufreq/amd-pstate: Use amd_pstate_update_min_max_limit() for EPP limits Mario Limonciello
2024-10-16  4:38   ` Yuan, Perry
2024-10-16 10:14   ` Gautham R. Shenoy
2024-10-12 17:45 ` Mario Limonciello [this message]
2024-10-15  9:07   ` [PATCH 4/4] cpufreq/amd-pstate: Drop needless EPP initialization Dhananjay Ugwekar
2024-10-16  4:33   ` Yuan, Perry
2024-10-16 10:33   ` Gautham R. Shenoy
2024-10-16  4:10 ` [PATCH 1/4] cpufreq/amd-pstate: Use nominal perf for limits when boost is disabled Gautham R. Shenoy
2024-10-16  4:45 ` Yuan, Perry

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