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| Started by | Leo Yan <leo.yan@linaro.org> |
|---|---|
| First post | 2015-08-21 05:50 +0200 |
| Last post | 2015-08-21 18:00 +0200 |
| Articles | 4 — 2 participants |
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[PATCH] arm64: enable generic idle loop Leo Yan <leo.yan@linaro.org> - 2015-08-21 05:50 +0200
Re: [PATCH] arm64: enable generic idle loop Catalin Marinas <catalin.marinas@arm.com> - 2015-08-21 11:10 +0200
Re: [PATCH] arm64: enable generic idle loop Leo Yan <leo.yan@linaro.org> - 2015-08-21 11:20 +0200
Re: [PATCH] arm64: enable generic idle loop Catalin Marinas <catalin.marinas@arm.com> - 2015-08-21 18:00 +0200
| From | Leo Yan <leo.yan@linaro.org> |
|---|---|
| Date | 2015-08-21 05:50 +0200 |
| Subject | [PATCH] arm64: enable generic idle loop |
| Message-ID | <pZLv3-dm-1@gated-at.bofh.it> |
Enable generic idle loop for ARM64, so can support for hlt/nohlt command line options to override default idle loop behavior. Signed-off-by: Leo Yan <leo.yan@linaro.org> --- arch/arm64/Kconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index 0f6edb1..c404e74 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -31,6 +31,7 @@ config ARM64 select GENERIC_CLOCKEVENTS_BROADCAST if SMP select GENERIC_CPU_AUTOPROBE select GENERIC_EARLY_IOREMAP + select GENERIC_IDLE_POLL_SETUP select GENERIC_IRQ_PROBE select GENERIC_IRQ_SHOW select GENERIC_IRQ_SHOW_LEVEL -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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| From | Catalin Marinas <catalin.marinas@arm.com> |
|---|---|
| Date | 2015-08-21 11:10 +0200 |
| Message-ID | <pZQuL-7xY-17@gated-at.bofh.it> |
| In reply to | #1210844 |
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? -- Catalin -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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| From | Leo Yan <leo.yan@linaro.org> |
|---|---|
| Date | 2015-08-21 11:20 +0200 |
| Message-ID | <pZQEq-7Jq-9@gated-at.bofh.it> |
| In reply to | #1211032 |
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. Thanks, Leo Yan -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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| From | Catalin Marinas <catalin.marinas@arm.com> |
|---|---|
| Date | 2015-08-21 18:00 +0200 |
| Message-ID | <pZWTw-8aj-13@gated-at.bofh.it> |
| In reply to | #1211035 |
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 <catalin.marinas@arm.com> -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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