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Groups > linux.kernel > #1586981
| From | Sudeep Holla <sudeep.holla@arm.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: [PATCH/RFC 0/6] PSCI: Fix non-PMIC wake-up if SYSTEM_SUSPEND cuts power |
| Date | 2017-02-23 17:00 +0100 |
| Message-ID | <te3Ye-3fj-15@gated-at.bofh.it> (permalink) |
| References | (4 earlier) <tdCY1-Mr-11@gated-at.bofh.it> <tdFjc-2kS-11@gated-at.bofh.it> <tdGff-32X-1@gated-at.bofh.it> <te3vc-35q-19@gated-at.bofh.it> <te3ET-38C-25@gated-at.bofh.it> |
| Organization | ARM |
Hi Geert, On 23/02/17 15:34, Geert Uytterhoeven wrote: > Hi Sudeep, > > On Thu, Feb 23, 2017 at 4:26 PM, Geert Uytterhoeven > <geert@linux-m68k.org> wrote: >> On Wed, Feb 22, 2017 at 3:32 PM, Sudeep Holla <sudeep.holla@arm.com> wrote: >>> On 22/02/17 13:38, Geert Uytterhoeven wrote: >>>> On Wed, Feb 22, 2017 at 12:03 PM, Sudeep Holla <sudeep.holla@arm.com> wrote: >>>> 4. Patch 3/6 adds a new "shallow" state, as it allows to save more >>>> power (the difference may be due to suboptimal cpuidle platform support on R-Car Gen3, though), >>> >>> Why can't you do that in s2idle mode. Please give me the difference >>> between your shallow state and s2idle state, not just power numbers >>> but the actual state of CPUs and the devices in the system. >> >> From the Linux side, there's not much difference, except that the secondary >> CPU cores are disabled. As that is handled by PSCI, the difference may be >> in the PSCI implementation. I will have to check that... >> >> On these SoCs, the individual CPU cores and the SCU/L2 are in separate >> (nested) power areas. Perhaps these power areas are turned off when >> disabling the CPU cores, but not when suspending them. > > BTW, I don't care much about the extra state. > Then stop caring about extra power usage too ;). Seriously this is not a valid argument. >>>> E.g. on non-PSCI platforms with an Ethernet driver that supports >>>> Wake-on-LAN, I can do: >>>> >>>> ethtool -s eth0 wol g >>>> echo mem > /sys/power/state >>>> >>>> and be sure that the system can be woken up by sending a WoL MagicPacket. >>> >>> Still possible with s2idle if CPU_SUSPEND is correctly implemented by >>> the platform. >> >> Sure. But not automatic, as it needs fiddling with mem_sleep. > > I do care about this, as it affects user experience. > Again when you have both "deep" and "standby" suspend states as per your patch set, user has to choose one. No escape from that. -- Regards, Sudeep
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[PATCH/RFC 0/6] PSCI: Fix non-PMIC wake-up if SYSTEM_SUSPEND cuts power Geert Uytterhoeven <geert+renesas@glider.be> - 2017-02-20 21:40 +0100
[PATCH/RFC 2/6] PM / Wakeup: Add wakeup_source_available() Geert Uytterhoeven <geert+renesas@glider.be> - 2017-02-20 21:40 +0100
[PATCH/RFC 3/6] drivers: firmware: psci: Implement shallow suspend mode Geert Uytterhoeven <geert+renesas@glider.be> - 2017-02-20 21:40 +0100
Re: [PATCH/RFC 3/6] drivers: firmware: psci: Implement shallow suspend mode Sudeep Holla <sudeep.holla@arm.com> - 2017-02-21 11:50 +0100
Re: [PATCH/RFC 3/6] drivers: firmware: psci: Implement shallow suspend mode Geert Uytterhoeven <geert@linux-m68k.org> - 2017-02-21 17:30 +0100
Re: [PATCH/RFC 3/6] drivers: firmware: psci: Implement shallow suspend mode Sudeep Holla <sudeep.holla@arm.com> - 2017-02-21 18:00 +0100
Re: [PATCH/RFC 3/6] drivers: firmware: psci: Implement shallow suspend mode Pavel Machek <pavel@ucw.cz> - 2017-02-21 12:10 +0100
Re: [PATCH/RFC 3/6] drivers: firmware: psci: Implement shallow suspend mode Sudeep Holla <sudeep.holla@arm.com> - 2017-02-21 12:20 +0100
Re: [PATCH/RFC 3/6] drivers: firmware: psci: Implement shallow suspend mode Geert Uytterhoeven <geert@linux-m68k.org> - 2017-02-21 17:40 +0100
Re: [PATCH/RFC 3/6] drivers: firmware: psci: Implement shallow suspend mode Sudeep Holla <sudeep.holla@arm.com> - 2017-02-21 18:30 +0100
Re: [PATCH/RFC 3/6] drivers: firmware: psci: Implement shallow suspend mode Geert Uytterhoeven <geert@linux-m68k.org> - 2017-02-22 14:50 +0100
Re: [PATCH/RFC 3/6] drivers: firmware: psci: Implement shallow suspend mode Sudeep Holla <sudeep.holla@arm.com> - 2017-02-22 15:40 +0100
Re: [PATCH/RFC 3/6] drivers: firmware: psci: Implement shallow suspend mode Mark Rutland <mark.rutland@arm.com> - 2017-02-21 18:30 +0100
Re: [PATCH/RFC 3/6] drivers: firmware: psci: Implement shallow suspend mode Geert Uytterhoeven <geert@linux-m68k.org> - 2017-02-21 19:10 +0100
Re: [PATCH/RFC 3/6] drivers: firmware: psci: Implement shallow suspend mode Mark Rutland <mark.rutland@arm.com> - 2017-02-21 19:20 +0100
Re: [PATCH/RFC 3/6] drivers: firmware: psci: Implement shallow suspend mode Geert Uytterhoeven <geert@linux-m68k.org> - 2017-02-21 19:30 +0100
[PATCH/RFC 1/6] alarmtimer: Postpone wake-up source registration until really available Geert Uytterhoeven <geert+renesas@glider.be> - 2017-02-20 21:40 +0100
[PATCH/RFC 6/6] arm64: dts: r8a7796: Fix non-PMIC wake-up sources Geert Uytterhoeven <geert+renesas@glider.be> - 2017-02-20 21:40 +0100
[PATCH/RFC 4/6] drivers: firmware: psci: Fix non-PMIC wake-up if SYSTEM_SUSPEND cuts power Geert Uytterhoeven <geert+renesas@glider.be> - 2017-02-20 21:40 +0100
Re: [PATCH/RFC 4/6] drivers: firmware: psci: Fix non-PMIC wake-up if SYSTEM_SUSPEND cuts power Sudeep Holla <sudeep.holla@arm.com> - 2017-02-21 12:00 +0100
Re: [PATCH/RFC 4/6] drivers: firmware: psci: Fix non-PMIC wake-up if SYSTEM_SUSPEND cuts power Geert Uytterhoeven <geert@linux-m68k.org> - 2017-02-21 17:40 +0100
Re: [PATCH/RFC 4/6] drivers: firmware: psci: Fix non-PMIC wake-up if SYSTEM_SUSPEND cuts power Sudeep Holla <sudeep.holla@arm.com> - 2017-02-21 17:50 +0100
Re: [PATCH/RFC 4/6] drivers: firmware: psci: Fix non-PMIC wake-up if SYSTEM_SUSPEND cuts power Pavel Machek <pavel@ucw.cz> - 2017-02-21 12:10 +0100
Re: [PATCH/RFC 4/6] drivers: firmware: psci: Fix non-PMIC wake-up if SYSTEM_SUSPEND cuts power Geert Uytterhoeven <geert@linux-m68k.org> - 2017-02-21 17:40 +0100
Re: [PATCH/RFC 4/6] drivers: firmware: psci: Fix non-PMIC wake-up if SYSTEM_SUSPEND cuts power Mark Rutland <mark.rutland@arm.com> - 2017-02-21 19:00 +0100
Re: [PATCH/RFC 4/6] drivers: firmware: psci: Fix non-PMIC wake-up if SYSTEM_SUSPEND cuts power Mark Rutland <mark.rutland@arm.com> - 2017-02-21 18:50 +0100
Re: [PATCH/RFC 4/6] drivers: firmware: psci: Fix non-PMIC wake-up if SYSTEM_SUSPEND cuts power Geert Uytterhoeven <geert@linux-m68k.org> - 2017-02-22 15:10 +0100
Re: [PATCH/RFC 4/6] drivers: firmware: psci: Fix non-PMIC wake-up if SYSTEM_SUSPEND cuts power "Rafael J. Wysocki" <rafael@kernel.org> - 2017-02-22 16:00 +0100
Re: [PATCH/RFC 0/6] PSCI: Fix non-PMIC wake-up if SYSTEM_SUSPEND cuts power Sudeep Holla <sudeep.holla@arm.com> - 2017-02-21 11:40 +0100
Re: [PATCH/RFC 0/6] PSCI: Fix non-PMIC wake-up if SYSTEM_SUSPEND cuts power Geert Uytterhoeven <geert@linux-m68k.org> - 2017-02-21 17:30 +0100
Re: [PATCH/RFC 0/6] PSCI: Fix non-PMIC wake-up if SYSTEM_SUSPEND cuts power Sudeep Holla <sudeep.holla@arm.com> - 2017-02-21 17:50 +0100
Re: [PATCH/RFC 0/6] PSCI: Fix non-PMIC wake-up if SYSTEM_SUSPEND cuts power Geert Uytterhoeven <geert@linux-m68k.org> - 2017-02-21 18:40 +0100
Re: [PATCH/RFC 0/6] PSCI: Fix non-PMIC wake-up if SYSTEM_SUSPEND cuts power Sudeep Holla <sudeep.holla@arm.com> - 2017-02-21 19:00 +0100
Re: [PATCH/RFC 0/6] PSCI: Fix non-PMIC wake-up if SYSTEM_SUSPEND cuts power Sudeep Holla <sudeep.holla@arm.com> - 2017-02-21 19:40 +0100
Re: [PATCH/RFC 0/6] PSCI: Fix non-PMIC wake-up if SYSTEM_SUSPEND cuts power Sudeep Holla <sudeep.holla@arm.com> - 2017-02-21 19:50 +0100
Re: [PATCH/RFC 0/6] PSCI: Fix non-PMIC wake-up if SYSTEM_SUSPEND cuts power "Rafael J. Wysocki" <rjw@rjwysocki.net> - 2017-02-22 02:30 +0100
Re: [PATCH/RFC 0/6] PSCI: Fix non-PMIC wake-up if SYSTEM_SUSPEND cuts power Sudeep Holla <sudeep.holla@arm.com> - 2017-02-22 12:10 +0100
Re: [PATCH/RFC 0/6] PSCI: Fix non-PMIC wake-up if SYSTEM_SUSPEND cuts power Geert Uytterhoeven <geert@linux-m68k.org> - 2017-02-22 14:40 +0100
Re: [PATCH/RFC 0/6] PSCI: Fix non-PMIC wake-up if SYSTEM_SUSPEND cuts power Sudeep Holla <sudeep.holla@arm.com> - 2017-02-22 15:40 +0100
Re: [PATCH/RFC 0/6] PSCI: Fix non-PMIC wake-up if SYSTEM_SUSPEND cuts power "Rafael J. Wysocki" <rafael@kernel.org> - 2017-02-22 16:00 +0100
Re: [PATCH/RFC 0/6] PSCI: Fix non-PMIC wake-up if SYSTEM_SUSPEND cuts power Sudeep Holla <sudeep.holla@arm.com> - 2017-02-22 17:00 +0100
Re: [PATCH/RFC 0/6] PSCI: Fix non-PMIC wake-up if SYSTEM_SUSPEND cuts power Geert Uytterhoeven <geert@linux-m68k.org> - 2017-02-23 16:30 +0100
Re: [PATCH/RFC 0/6] PSCI: Fix non-PMIC wake-up if SYSTEM_SUSPEND cuts power Geert Uytterhoeven <geert@linux-m68k.org> - 2017-02-23 16:40 +0100
Re: [PATCH/RFC 0/6] PSCI: Fix non-PMIC wake-up if SYSTEM_SUSPEND cuts power Sudeep Holla <sudeep.holla@arm.com> - 2017-02-23 17:00 +0100
Re: [PATCH/RFC 0/6] PSCI: Fix non-PMIC wake-up if SYSTEM_SUSPEND cuts power Sudeep Holla <sudeep.holla@arm.com> - 2017-02-23 17:00 +0100
Re: [PATCH/RFC 0/6] PSCI: Fix non-PMIC wake-up if SYSTEM_SUSPEND cuts power Geert Uytterhoeven <geert@linux-m68k.org> - 2017-02-22 14:20 +0100
Re: [PATCH/RFC 0/6] PSCI: Fix non-PMIC wake-up if SYSTEM_SUSPEND cuts power "Rafael J. Wysocki" <rafael@kernel.org> - 2017-02-22 15:40 +0100
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