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Subject: Re: [PATCH v3 2/5] ACPI: battery: Clean up printing messages
From:   Hans de Goede <hdegoede@redhat.com>
To:     "Rafael J. Wysocki" <rjw@rjwysocki.net>,
        Linux ACPI <linux-acpi@vger.kernel.org>
Cc:     Linux PM <linux-pm@vger.kernel.org>,
        LKML <linux-kernel@vger.kernel.org>,
        "Rafael J. Wysocki" <rafael@kernel.org>,
        Zhang Rui <rui.zhang@intel.com>,
        Erik Kaneda <erik.kaneda@intel.com>,
        Joe Perches <joe@perches.com>,
        Hanjun Guo <guohanjun@huawei.com>
References: <2367702.B5bJTmGzJm@kreacher> <1991501.dpTHplkurC@kreacher>
 <1961054.9MKZ8ejxOh@kreacher> <1731128.lCOlkKr4QW@kreacher>
 <3ca5dcaa-094a-9f4f-a802-81c54a681c96@redhat.com>
Message-ID: <16884c35-811a-b095-27f2-f43394f3efc2@redhat.com>
Date:   Thu, 4 Feb 2021 19:31:41 +0100
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Hi,

On 2/4/21 7:27 PM, Hans de Goede wrote:
> Hi,
> 
> On 2/3/21 7:44 PM, Rafael J. Wysocki wrote:
>> From: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
>>
>> Replace the ACPI_DEBUG_PRINT() and ACPI_EXCEPTION() instances
>> in battery.c with acpi_handle_debug() and acpi_handle_info() calls,
>> respectively, which among other things causes the excessive log
>> level of the messages previously printed via ACPI_EXCEPTION() to
>> be increased.
>>
>> Drop the _COMPONENT and ACPI_MODULE_NAME() definitions that are not
>> used any more, drop the no longer needed ACPI_BATTERY_COMPONENT
>> definition from the headers and update the documentation accordingly.
>>
>> While at it, update the pr_fmt() definition and drop the unneeded
>> PREFIX sybmbol definition from battery.c.  Also adapt the existing
>> pr_info() calls to the new pr_fmt() definition.
>>
>> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
>> ---
>>
>> v2 -> v3: Also adapt the existing pr_info() calls to the new pr_fmt()
>>           definition.
>>
>> v1 -> v2: Changelog update.
>>
>> ---
>>  Documentation/firmware-guide/acpi/debug.rst |    1 
>>  drivers/acpi/battery.c                      |   33 +++++++++++++---------------
>>  drivers/acpi/sysfs.c                        |    1 
>>  include/acpi/acpi_drivers.h                 |    1 
>>  4 files changed, 16 insertions(+), 20 deletions(-)
>>
>> Index: linux-pm/drivers/acpi/battery.c
>> ===================================================================
>> --- linux-pm.orig/drivers/acpi/battery.c
>> +++ linux-pm/drivers/acpi/battery.c
>> @@ -8,7 +8,7 @@
>>   *  Copyright (C) 2001, 2002 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com>
>>   */
>>  
>> -#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
>> +#define pr_fmt(fmt) "ACPI: battery: " fmt
>>  
>>  #include <linux/async.h>
>>  #include <linux/delay.h>
>> @@ -29,8 +29,6 @@
>>  
>>  #include <acpi/battery.h>
>>  
>> -#define PREFIX "ACPI: "
>> -
>>  #define ACPI_BATTERY_VALUE_UNKNOWN 0xFFFFFFFF
>>  #define ACPI_BATTERY_CAPACITY_VALID(capacity) \
>>  	((capacity) != 0 && (capacity) != ACPI_BATTERY_VALUE_UNKNOWN)
>> @@ -44,10 +42,6 @@
>>  #define ACPI_BATTERY_STATE_CHARGING	0x2
>>  #define ACPI_BATTERY_STATE_CRITICAL	0x4
>>  
>> -#define _COMPONENT		ACPI_BATTERY_COMPONENT
>> -
>> -ACPI_MODULE_NAME("battery");
>> -
>>  MODULE_AUTHOR("Paul Diefenbaugh");
>>  MODULE_AUTHOR("Alexey Starikovskiy <astarikovskiy@suse.de>");
>>  MODULE_DESCRIPTION("ACPI Battery Driver");
>> @@ -466,7 +460,8 @@ static int extract_package(struct acpi_b
>>  static int acpi_battery_get_status(struct acpi_battery *battery)
>>  {
>>  	if (acpi_bus_get_status(battery->device)) {
>> -		ACPI_EXCEPTION((AE_INFO, AE_ERROR, "Evaluating _STA"));
>> +		acpi_handle_info(battery->device->handle,
>> +				 "_STA evaluation failed\n");
> 
> Missing ": %s", acpi_format_exception(status), or is that intentional
> (I did not see this mentioned in the commit msg) ?

Ah, after noticing that you did the same thing in patch 4/5 and there
the passed in status was bogus, I now notice that the status here
was hard-coded to AE_ERROR, so not meaningful.

That answers my own question, so this is:

Reviewed-by: Hans de Goede <hdegoede@redhat.com>

As is.

Regards,

Hans


>>  		return -ENODEV;
>>  	}
>>  	return 0;
>> @@ -535,8 +530,10 @@ static int acpi_battery_get_info(struct
>>  		mutex_unlock(&battery->lock);
>>  
>>  		if (ACPI_FAILURE(status)) {
>> -			ACPI_EXCEPTION((AE_INFO, status, "Evaluating %s",
>> -					use_bix ? "_BIX":"_BIF"));
>> +			acpi_handle_info(battery->device->handle,
>> +					 "%s evaluation failed: %s\n",
>> +					 use_bix ?"_BIX":"_BIF",
>> +				         acpi_format_exception(status));
>>  		} else {
>>  			result = extract_battery_info(use_bix,
>>  						      battery,
>> @@ -573,7 +570,9 @@ static int acpi_battery_get_state(struct
>>  	mutex_unlock(&battery->lock);
>>  
>>  	if (ACPI_FAILURE(status)) {
>> -		ACPI_EXCEPTION((AE_INFO, status, "Evaluating _BST"));
>> +		acpi_handle_info(battery->device->handle,
>> +				 "_BST evaluation failed: %s",
>> +				 acpi_format_exception(status));
>>  		return -ENODEV;
>>  	}
>>  
>> @@ -590,7 +589,7 @@ static int acpi_battery_get_state(struct
>>  		battery->rate_now != ACPI_BATTERY_VALUE_UNKNOWN &&
>>  		(s16)(battery->rate_now) < 0) {
>>  		battery->rate_now = abs((s16)battery->rate_now);
>> -		pr_warn_once(FW_BUG "battery: (dis)charge rate invalid.\n");
>> +		pr_warn_once(FW_BUG "(dis)charge rate invalid.\n");
>>  	}
>>  
>>  	if (test_bit(ACPI_BATTERY_QUIRK_PERCENTAGE_CAPACITY, &battery->flags)
>> @@ -625,7 +624,9 @@ static int acpi_battery_set_alarm(struct
>>  	if (ACPI_FAILURE(status))
>>  		return -ENODEV;
>>  
>> -	ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Alarm set to %d\n", battery->alarm));
>> +	acpi_handle_debug(battery->device->handle, "Alarm set to %d\n",
>> +			  battery->alarm);
>> +
>>  	return 0;
>>  }
>>  
>> @@ -1201,8 +1202,7 @@ static int acpi_battery_add(struct acpi_
>>  	if (result)
>>  		goto fail;
>>  
>> -	pr_info(PREFIX "%s Slot [%s] (battery %s)\n",
>> -		ACPI_BATTERY_DEVICE_NAME, acpi_device_bid(device),
>> +	pr_info("Slot [%s] (battery %s)\n", acpi_device_bid(device),
>>  		device->status.battery_present ? "present" : "absent");
>>  
>>  	battery->pm_nb.notifier_call = battery_notify;
>> @@ -1282,8 +1282,7 @@ static void __init acpi_battery_init_asy
>>  	if (battery_check_pmic) {
>>  		for (i = 0; i < ARRAY_SIZE(acpi_battery_blacklist); i++)
>>  			if (acpi_dev_present(acpi_battery_blacklist[i], "1", -1)) {
>> -				pr_info(PREFIX ACPI_BATTERY_DEVICE_NAME
>> -					": found native %s PMIC, not loading\n",
>> +				pr_info("found native %s PMIC, not loading\n",
>>  					acpi_battery_blacklist[i]);
>>  				return;
>>  			}
>> Index: linux-pm/Documentation/firmware-guide/acpi/debug.rst
>> ===================================================================
>> --- linux-pm.orig/Documentation/firmware-guide/acpi/debug.rst
>> +++ linux-pm/Documentation/firmware-guide/acpi/debug.rst
>> @@ -52,7 +52,6 @@ shows the supported mask values, current
>>      ACPI_CA_DISASSEMBLER            0x00000800
>>      ACPI_COMPILER                   0x00001000
>>      ACPI_TOOLS                      0x00002000
>> -    ACPI_BATTERY_COMPONENT          0x00040000
>>      ACPI_BUTTON_COMPONENT           0x00080000
>>      ACPI_SBS_COMPONENT              0x00100000
>>      ACPI_FAN_COMPONENT              0x00200000
>> Index: linux-pm/drivers/acpi/sysfs.c
>> ===================================================================
>> --- linux-pm.orig/drivers/acpi/sysfs.c
>> +++ linux-pm/drivers/acpi/sysfs.c
>> @@ -52,7 +52,6 @@ static const struct acpi_dlayer acpi_deb
>>  	ACPI_DEBUG_INIT(ACPI_COMPILER),
>>  	ACPI_DEBUG_INIT(ACPI_TOOLS),
>>  
>> -	ACPI_DEBUG_INIT(ACPI_BATTERY_COMPONENT),
>>  	ACPI_DEBUG_INIT(ACPI_BUTTON_COMPONENT),
>>  	ACPI_DEBUG_INIT(ACPI_SBS_COMPONENT),
>>  	ACPI_DEBUG_INIT(ACPI_FAN_COMPONENT),
>> Index: linux-pm/include/acpi/acpi_drivers.h
>> ===================================================================
>> --- linux-pm.orig/include/acpi/acpi_drivers.h
>> +++ linux-pm/include/acpi/acpi_drivers.h
>> @@ -15,7 +15,6 @@
>>   * Please update drivers/acpi/debug.c and Documentation/firmware-guide/acpi/debug.rst
>>   * if you add to this list.
>>   */
>> -#define ACPI_BATTERY_COMPONENT		0x00040000
>>  #define ACPI_BUTTON_COMPONENT		0x00080000
>>  #define ACPI_SBS_COMPONENT		0x00100000
>>  #define ACPI_FAN_COMPONENT		0x00200000
>>
>>
>>