From mboxrd@z Thu Jan 1 00:00:00 1970 From: catalin.marinas@arm.com (Catalin Marinas) Date: Fri, 21 Aug 2015 16:54:25 +0100 Subject: [PATCH] arm64: enable generic idle loop In-Reply-To: <20150821091446.GB4280@leoy-linaro> References: <1440128422-4170-1-git-send-email-leo.yan@linaro.org> <20150821090043.GA14072@e104818-lin.cambridge.arm.com> <20150821091446.GB4280@leoy-linaro> Message-ID: <20150821155425.GC16410@e104818-lin.cambridge.arm.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Fri, Aug 21, 2015 at 05:14:46PM +0800, Leo Yan wrote: > On Fri, Aug 21, 2015 at 10:00:43AM +0100, Catalin Marinas wrote: > > On Fri, Aug 21, 2015 at 11:40:22AM +0800, Leo Yan wrote: > > > Enable generic idle loop for ARM64, so can support for hlt/nohlt > > > command line options to override default idle loop behavior. > > > > Just curious, what do you need this for? > > With this config, usually we can add "nohlt" in command line to force > the cpu will never be powered off; so can quickly narrow down if some > issues are related with cpuidle or not. > > And if CPU is powered off, then its debug logic also will be powered off. > So we can simply use this method to let debugger always hot connect with > the target CPU. OK. Acked-by: Catalin Marinas