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From: Hanjun Guo <guohanjun@huawei.com>
To: "Rafael J. Wysocki" <rjw@rjwysocki.net>,
	Hanjun Guo <hanjun.guo@linaro.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>,
	Will Deacon <will.deacon@arm.com>,
	Olof Johansson <olof@lixom.net>,
	Grant Likely <grant.likely@linaro.org>,
	Lorenzo Pieralisi <Lorenzo.Pieralisi@arm.com>,
	Arnd Bergmann <arnd@arndb.de>,
	Mark Rutland <mark.rutland@arm.com>,
	"Graeme Gregory" <graeme.gregory@linaro.org>,
	Sudeep Holla <Sudeep.Holla@arm.com>,
	"Jon Masters" <jcm@redhat.com>,
	Marc Zyngier <marc.zyngier@arm.com>,
	Mark Brown <broonie@kernel.org>, Robert Richter <rric@kernel.org>,
	Timur Tabi <timur@codeaurora.org>,
	Ashwin Chaugule <ashwinc@codeaurora.org>,
	<suravee.suthikulpanit@amd.com>, <linux-acpi@vger.kernel.org>,
	<linux-arm-kernel@lists.infradead.org>,
	<linux-kernel@vger.kernel.org>, <linaro-acpi@lists.linaro.org>,
	Tomasz Nowicki <tomasz.nowicki@linaro.org>
Subject: Re: [update][PATCH v10 06/21] ACPI / sleep: Introduce CONFIG_ACPI_GENERIC_SLEEP
Date: Tue, 17 Mar 2015 09:08:45 +0800	[thread overview]
Message-ID: <55077E9D.50103@huawei.com> (raw)
In-Reply-To: <5704037.pUGdJ0Q9hF@vostro.rjw.lan>

On 2015/3/17 7:15, Rafael J. Wysocki wrote:
> On Monday, March 16, 2015 08:14:52 PM Hanjun Guo wrote:
>> On 2015年03月14日 05:49, Rafael J. Wysocki wrote:
>>> On Friday, March 13, 2015 04:14:29 PM Hanjun Guo wrote:
[...]
>>>>
>>>> diff --git a/arch/ia64/Kconfig b/arch/ia64/Kconfig
>>>> index 074e52b..e8728d7 100644
>>>> --- a/arch/ia64/Kconfig
>>>> +++ b/arch/ia64/Kconfig
>>>> @@ -10,6 +10,7 @@ config IA64
>>>>   	select ARCH_MIGHT_HAVE_PC_SERIO
>>>>   	select PCI if (!IA64_HP_SIM)
>>>>   	select ACPI if (!IA64_HP_SIM)
>>>> +	select ACPI_GENERIC_SLEEP if ACPI
>>>>   	select ARCH_MIGHT_HAVE_ACPI_PDC if ACPI
>>>>   	select HAVE_UNSTABLE_SCHED_CLOCK
>>>>   	select HAVE_IDE
>>>> diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
>>>> index b7d31ca..9804431 100644
>>>> --- a/arch/x86/Kconfig
>>>> +++ b/arch/x86/Kconfig
>>>> @@ -22,6 +22,7 @@ config X86_64
>>>>   ### Arch settings
>>>>   config X86
>>>>   	def_bool y
>>>> +	select ACPI_GENERIC_SLEEP if ACPI
>>> One more nit.  If you did
>>>
>>> +	select ACPI_GENERIC_SLEEP if ACPI_SLEEP
>>>
>>> here (and above for ia64), you'd avoid having to make ACPI_SLEEP
>>> depend on ACPI_GENERIC_SLEEP which goes somewhat backwards.
>> In sleep.c,
>>
>> #ifdef CONFIG_ACPI_SLEEP
>> acpi_target_system_state()
>> {
>> }
>> #endif
>>
>> and CONFIG_ACPI_SLEEP depends on SUSPEND || HIBERNATION,
>> which one of them will be enabled on ARM64 so ACPI_SLEEP
>> will also enabled too.
>>
>> So if we
>>
>> +select ACPI_GENERIC_SLEEP if ACPI_SLEEP
>>
>> and
>>
>> +acpi-$(CONFIG_ACPI_GENERIC_SLEEP) += sleep.o
>>
>> it will lead to errors for acpi_target_system_state() that
>> is declared but not defined, so I will keep the code as
>> it is, what do you think?
> No, we need to hash this out.  Having two different Kconfig options meaning
> almost the same thing (ACPI_SLEEP and ACPI_GENERIC_SLEEP) is beyond ugly.
>
> Do you need ACPI_SLEEP on ARM64 at all?

No, at least for now we don't need it, the spec for sleep is not ready for
ARM64 arch, so ACPI_SLEEP will not work at all on ARM64.

Thanks
Hanjun


  reply	other threads:[~2015-03-17  1:09 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-03-13  8:14 Hanjun Guo
2015-03-13 21:49 ` Rafael J. Wysocki
2015-03-16 12:14   ` Hanjun Guo
2015-03-16 23:15     ` Rafael J. Wysocki
2015-03-17  1:08       ` Hanjun Guo [this message]
2015-03-17  2:28         ` Rafael J. Wysocki
2015-03-17  2:36           ` Hanjun Guo
2015-03-17  3:23             ` Rafael J. Wysocki
2015-03-17  4:10               ` Hanjun Guo
2015-03-17  5:59                 ` Jon Masters
2015-03-17  6:31                   ` Hanjun Guo
2015-03-17 14:33                 ` Rafael J. Wysocki
2015-03-18  1:56                   ` Hanjun Guo
2015-03-17 12:35               ` Lorenzo Pieralisi
     [not found]                 ` <CAGHbJ3DhUB688K7ooT7ai=2QjRp7S+_E_Y+a+GupeTvjR5omMg@mail.gmail.com>
2015-03-17 14:29                   ` [PATCH] ACPI / sleep: Drop acpi_suspend() which is not used Rafael J. Wysocki
2015-03-17 14:24                     ` Lorenzo Pieralisi
2015-03-18  1:17                     ` Hanjun Guo
2015-03-17 14:30                 ` [update][PATCH v10 06/21] ACPI / sleep: Introduce CONFIG_ACPI_GENERIC_SLEEP Rafael J. Wysocki

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