linux-kernel - [PATCH] cpufreq: intel_pstate: Clean up aperf_mperf

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Message-ID: <1695770.kLfQgcESsc@kreacher>
Date:   Wed, 15 Jul 2020 15:54:57 +0200
From:   "Rafael J. Wysocki" <rjw@...ysocki.net>
To:     Linux PM <linux-pm@...r.kernel.org>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        Srinivas Pandruvada <srinivas.pandruvada@...ux.intel.com>,
        Lee Jones <lee.jones@...aro.org>
Subject: [PATCH] cpufreq: intel_pstate: Clean up aperf_mperf_shift description

From: Rafael J. Wysocki <rafael.j.wysocki@...el.com>

The kerneldoc description of the aperf_mperf_shift field in
struct global_params is unclear and there is a typo in it, so
simplify it and clean it up.

Reported-by: Lee Jones <lee.jones@...aro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@...el.com>
---
 drivers/cpufreq/intel_pstate.c |    4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

Index: linux-pm/drivers/cpufreq/intel_pstate.c
===================================================================
--- linux-pm.orig/drivers/cpufreq/intel_pstate.c
+++ linux-pm/drivers/cpufreq/intel_pstate.c
@@ -202,9 +202,7 @@ struct global_params {
  * @pstate:		Stores P state limits for this CPU
  * @vid:		Stores VID limits for this CPU
  * @last_sample_time:	Last Sample time
- * @aperf_mperf_shift:	Number of clock cycles after aperf, merf is incremented
- *			This shift is a multiplier to mperf delta to
- *			calculate CPU busy.
+ * @aperf_mperf_shift:	APERF vs MPERF counting frequency difference
  * @prev_aperf:		Last APERF value read from APERF MSR
  * @prev_mperf:		Last MPERF value read from MPERF MSR
  * @prev_tsc:		Last timestamp counter (TSC) value