From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Perry Yuan <Perry.Yuan@amd.com>, Huang Rui <ray.huang@amd.com>,
Viresh Kumar <viresh.kumar@linaro.org>,
Su Jinzhou <jinzhou.su@amd.com>,
"Rafael J . Wysocki" <rafael.j.wysocki@intel.com>,
Sasha Levin <sashal@kernel.org>,
rafael@kernel.org, linux-pm@vger.kernel.org
Subject: [PATCH AUTOSEL 6.0 06/18] cpufreq: amd_pstate: fix wrong lowest perf fetch
Date: Sun, 9 Oct 2022 16:51:23 -0400 [thread overview]
Message-ID: <20221009205136.1201774-6-sashal@kernel.org> (raw)
In-Reply-To: <20221009205136.1201774-1-sashal@kernel.org>
From: Perry Yuan <Perry.Yuan@amd.com>
[ Upstream commit b185c5053c65b7704ead4537e4d4d9b33dc398dc ]
Fix the wrong lowest perf value reading which is used for new
des_perf calculation by governor requested, the incorrect min_perf will
get incorrect des_perf to be set , that will cause the system frequency
changing unexpectedly.
Reviewed-by: Huang Rui <ray.huang@amd.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Perry Yuan <Perry.Yuan@amd.com>
Signed-off-by: Su Jinzhou <jinzhou.su@amd.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/cpufreq/amd-pstate.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/cpufreq/amd-pstate.c b/drivers/cpufreq/amd-pstate.c
index 9ac75c1cde9c..dd0eeb8589a1 100644
--- a/drivers/cpufreq/amd-pstate.c
+++ b/drivers/cpufreq/amd-pstate.c
@@ -312,7 +312,7 @@ static int amd_pstate_target(struct cpufreq_policy *policy,
return -ENODEV;
cap_perf = READ_ONCE(cpudata->highest_perf);
- min_perf = READ_ONCE(cpudata->lowest_nonlinear_perf);
+ min_perf = READ_ONCE(cpudata->lowest_perf);
max_perf = cap_perf;
freqs.old = policy->cur;
--
2.35.1
next prev parent reply other threads:[~2022-10-09 20:52 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-10-09 20:51 [Cluster-devel] [PATCH AUTOSEL 6.0 01/18] fs: dlm: fix race in lowcomms Sasha Levin
2022-10-09 20:51 ` Sasha Levin
2022-10-09 20:51 ` [PATCH AUTOSEL 6.0 02/18] rcu: Avoid triggering strict-GP irq-work when RCU is idle Sasha Levin
2022-10-09 20:51 ` [PATCH AUTOSEL 6.0 03/18] rcu: Back off upon fill_page_cache_func() allocation failure Sasha Levin
2022-10-09 20:51 ` [PATCH AUTOSEL 6.0 04/18] rcu-tasks: Convert RCU_LOCKDEP_WARN() to WARN_ONCE() Sasha Levin
2022-10-09 20:51 ` [PATCH AUTOSEL 6.0 05/18] rcu-tasks: Ensure RCU Tasks Trace loops have quiescent states Sasha Levin
2022-10-09 20:51 ` Sasha Levin [this message]
2022-10-09 20:51 ` [PATCH AUTOSEL 6.0 07/18] ACPI: video: Add Toshiba Satellite/Portege Z830 quirk Sasha Levin
2022-10-09 20:51 ` [PATCH AUTOSEL 6.0 08/18] fortify: Fix __compiletime_strlen() under UBSAN_BOUNDS_LOCAL Sasha Levin
2022-10-09 20:51 ` [PATCH AUTOSEL 6.0 09/18] ACPI: tables: FPDT: Don't call acpi_os_map_memory() on invalid phys address Sasha Levin
2022-10-09 20:51 ` [PATCH AUTOSEL 6.0 10/18] cpufreq: intel_pstate: Add Tigerlake support in no-HWP mode Sasha Levin
2022-10-09 20:51 ` [PATCH AUTOSEL 6.0 11/18] MIPS: BCM47XX: Cast memcmp() of function to (void *) Sasha Levin
2022-10-09 20:51 ` [PATCH AUTOSEL 6.0 12/18] powercap: intel_rapl: fix UBSAN shift-out-of-bounds issue Sasha Levin
2022-10-09 20:51 ` [PATCH AUTOSEL 6.0 13/18] thermal: intel_powerclamp: Use get_cpu() instead of smp_processor_id() to avoid crash Sasha Levin
2022-10-09 20:51 ` [PATCH AUTOSEL 6.0 14/18] ARM: decompressor: Include .data.rel.ro.local Sasha Levin
2022-10-09 20:51 ` Sasha Levin
2022-10-09 20:51 ` [PATCH AUTOSEL 6.0 15/18] ACPI: x86: Add a quirk for Dell Inspiron 14 2-in-1 for StorageD3Enable Sasha Levin
2022-10-09 20:51 ` [PATCH AUTOSEL 6.0 16/18] x86/entry: Work around Clang __bdos() bug Sasha Levin
2022-10-09 20:51 ` [PATCH AUTOSEL 6.0 17/18] NFSD: Return nfserr_serverfault if splice_ok but buf->pages have data Sasha Levin
2022-10-09 20:51 ` [PATCH AUTOSEL 6.0 18/18] NFSD: fix use-after-free on source server when doing inter-server copy Sasha Levin
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