From: Lan Tianyu <tianyu.lan@intel.com>
To: Pavel Machek <pavel@ucw.cz>
Cc: rjw@rjwysocki.net, lenb@kernel.org, linux-acpi@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH] ACPI/Battery: Accelerate battery resume callback
Date: Fri, 09 May 2014 15:43:57 +0800 [thread overview]
Message-ID: <536C873D.8030405@intel.com> (raw)
In-Reply-To: <20140509073827.GA4965@xo-6d-61-c0.localdomain>
On 2014年05月09日 15:38, Pavel Machek wrote:
> Hi!
>
>> Most time of battery resume callback is spent on executing AML code
>> _BTP, _BIF and _BIF to get battery info, status and set alarm. These
>> AML methods may access EC operation regions several times and consumes
>> time.
>>
>> These operations are not necessary during devices resume and can run
>> during POST_SUSPEND/HIBERNATION event when all processes are thawed.
>
> Does it mean that userspace will see pre-hibernation battery level for a while
> after resume?
Hi Pavel:
Thanks for your review. No, when user access the battery sysfs
interface, driver will read battery info and return new data.
>
> Pavel
>
--
Best regards
Tianyu Lan
next prev parent reply other threads:[~2014-05-09 7:43 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-05-04 6:07 [PATCH] ACPI/Battery: Accelerate battery resume callback Lan Tianyu
2014-05-09 7:38 ` Pavel Machek
2014-05-09 7:43 ` Lan Tianyu [this message]
2014-05-19 22:54 ` Rafael J. Wysocki
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