linux-kernel - [PATCH v11 1/8] cpufreq: amd-pstate: Document *_limit_* fields in struct amd

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Message-ID: <c50374885172571e1c25d95552dec8467c37ea24.1713858800.git.perry.yuan@amd.com>
Date: Tue, 23 Apr 2024 15:58:17 +0800
From: Perry Yuan <perry.yuan@....com>
To: <rafael.j.wysocki@...el.com>, <Mario.Limonciello@....com>,
	<viresh.kumar@...aro.org>, <gautham.shenoy@....com>,
	<Borislav.Petkov@....com>, <Ray.Huang@....com>, <Alexander.Deucher@....com>
CC: <Xinmei.Huang@....com>, <oleksandr@...alenko.name>, <Xiaojian.Du@....com>,
	<Li.Meng@....com>, <linux-pm@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: [PATCH v11 1/8] cpufreq: amd-pstate: Document *_limit_* fields in struct amd_cpudata

From: "Gautham R. Shenoy" <gautham.shenoy@....com>

The four fields of struct cpudata namely min_limit_perf,
max_limit_perf, min_limit_freq, max_limit_freq introduced in the
commit febab20caeba("cpufreq/amd-pstate: Fix scaling_min_freq and
scaling_max_freq update") are currently undocumented

Add comments describing these fields

Acked-by: Huang Rui <ray.huang@....com>
Fixes: febab20caeba("cpufreq/amd-pstate: Fix scaling_min_freq and scaling_max_freq update")
Reviewed-by: Li Meng <li.meng@....com>
Tested-by: Dhananjay Ugwekar <Dhananjay.Ugwekar@....com>
Signed-off-by: Gautham R. Shenoy <gautham.shenoy@....com>
Signed-off-by: Perry Yuan <perry.yuan@....com>
---
 include/linux/amd-pstate.h | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/include/linux/amd-pstate.h b/include/linux/amd-pstate.h
index d21838835abd..212f377d615b 100644
--- a/include/linux/amd-pstate.h
+++ b/include/linux/amd-pstate.h
@@ -49,6 +49,10 @@ struct amd_aperf_mperf {
  * @lowest_perf: the absolute lowest performance level of the processor
  * @prefcore_ranking: the preferred core ranking, the higher value indicates a higher
  * 		  priority.
+ * @min_limit_perf: Cached value of the perf corresponding to policy->min
+ * @max_limit_perf: Cached value of the perf corresponding to policy->max
+ * @min_limit_freq: Cached value of policy->min
+ * @max_limit_freq: Cached value of policy->max
  * @max_freq: the frequency that mapped to highest_perf
  * @min_freq: the frequency that mapped to lowest_perf
  * @nominal_freq: the frequency that mapped to nominal_perf
-- 
2.34.1