Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20;
From:   Yajun Deng <yajun.deng@linux.dev>
To:     rafael@kernel.org, lenb@kernel.org
Cc:     linux-acpi@vger.kernel.org, linux-kernel@vger.kernel.org,
        Yajun Deng <yajun.deng@linux.dev>
Subject: [PATCH] ACPI: processor: idle: expose max_cstate/nocst/bm_check_disable read-only in sysfs
Date:   Thu, 28 Apr 2022 17:54:13 +0800
Message-Id: <20220428095413.2950758-1-yajun.deng@linux.dev>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Precedence: bulk

This patch exposes max_cstate/nocst/bm_check_disable in read-only sysfs.
This will allow super users to verify them when changed in grub.

The parameters "nocst/bm_check_disable" is only used to be enable/disable.
So change them from integer to bool.

Signed-off-by: Yajun Deng <yajun.deng@linux.dev>
---
 drivers/acpi/processor_idle.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/drivers/acpi/processor_idle.c b/drivers/acpi/processor_idle.c
index e9c84d0ac55b..6a5572a1a80c 100644
--- a/drivers/acpi/processor_idle.c
+++ b/drivers/acpi/processor_idle.c
@@ -38,11 +38,11 @@
 #define ACPI_IDLE_STATE_START	(IS_ENABLED(CONFIG_ARCH_HAS_CPU_RELAX) ? 1 : 0)
 
 static unsigned int max_cstate __read_mostly = ACPI_PROCESSOR_MAX_POWER;
-module_param(max_cstate, uint, 0000);
-static unsigned int nocst __read_mostly;
-module_param(nocst, uint, 0000);
-static int bm_check_disable __read_mostly;
-module_param(bm_check_disable, uint, 0000);
+module_param(max_cstate, uint, 0400);
+static bool nocst __read_mostly;
+module_param(nocst, bool, 0400);
+static bool bm_check_disable __read_mostly;
+module_param(bm_check_disable, bool, 0400);
 
 static unsigned int latency_factor __read_mostly = 2;
 module_param(latency_factor, uint, 0644);
-- 
2.25.1