linux-kernel - Re: [PATCH v5 1/5] ACPI / processor_idle: introduce ACPI_PROCESSOR

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Message-ID: <CAJvTdKmTykoMBw9dCpw0X0ep2qTPSu94-zzUmdrFwUfDeXueqA@mail.gmail.com>
Date:	Wed, 11 May 2016 14:28:34 -0400
From:	Len Brown <lenb@...nel.org>
To:	Sudeep Holla <sudeep.holla@....com>
Cc:	linux acpi <linux-acpi@...r.kernel.org>,
	"Rafael J. Wysocki" <rjw@...ysocki.net>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Vikas Sajjan <vikas.cha.sajjan@....com>,
	Sunil <sunil.vl@....com>,
	Prashanth Prakash <pprakash@...eaurora.org>,
	Ashwin Chaugule <ashwin.chaugule@...aro.org>,
	Al Stone <al.stone@...aro.org>,
	Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
	X86 ML <x86@...nel.org>, linux-ia64@...r.kernel.org
Subject: Re: [PATCH v5 1/5] ACPI / processor_idle: introduce ACPI_PROCESSOR_CSTATE

What is the functional goal/purpose of adding CONFIG_ACPI_PROCESSOR_CSTATE?

If the answer is that it saves code space on an ARM build, how much
space does it save?

Len Brown, Intel Open Source Technology Center