From: Michael Neuling <mikey@neuling.org>
To: benh@au1.ibm.com,
"Shreyas B. Prabhu" <shreyas@linux.vnet.ibm.com>,
mpe@ellerman.id.au
Cc: ego@linux.vnet.ibm.com, linux-kernel@vger.kernel.org,
maddy@linux.vnet.ibm.com, linuxppc-dev@lists.ozlabs.org
Subject: Re: [PATCH v6 07/11] powerpc/powernv: set power_save func after the idle states are initialized
Date: Wed, 22 Jun 2016 15:11:27 +1000 [thread overview]
Message-ID: <1466572287.8686.1.camel@neuling.org> (raw)
In-Reply-To: <1466560468.4089.7.camel@au1.ibm.com>
On Wed, 2016-06-22 at 11:54 +1000, Benjamin Herrenschmidt wrote:
> On Wed, 2016-06-08 at 11:54 -0500, Shreyas B. Prabhu wrote:
> >
> > pnv_init_idle_states discovers supported idle states from the
> > device tree and does the required initialization. Set power_save
> > function pointer only after this initialization is done
> >
> > Reviewed-by: Gautham R. Shenoy <ego@linux.vnet.ibm.com>
> > Signed-off-by: Shreyas B. Prabhu <shreyas@linux.vnet.ibm.com>
> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
>
> Please merge that one as-is now, no need to wait for the rest, as
> otherwise pwoer9 crashes at boot. It doesn't need to wait for the
> rest of the series.
Acked-by: Michael Neuling <mikey@neuling.org>
For the same reason. Without this we need powersave=off on the cmdline on
POWER9.
Mikey
>
> Cheers,
> Ben.
>
> >
> > ---
> > - No changes since v1
> >
> > arch/powerpc/platforms/powernv/idle.c | 3 +++
> > arch/powerpc/platforms/powernv/setup.c | 2 +-
> > 2 files changed, 4 insertions(+), 1 deletion(-)
> >
> > diff --git a/arch/powerpc/platforms/powernv/idle.c
> > b/arch/powerpc/platforms/powernv/idle.c
> > index fcc8b68..fbb09fb 100644
> > --- a/arch/powerpc/platforms/powernv/idle.c
> > +++ b/arch/powerpc/platforms/powernv/idle.c
> > @@ -285,6 +285,9 @@ static int __init pnv_init_idle_states(void)
> > }
> >
> > pnv_alloc_idle_core_states();
> > +
> > + if (supported_cpuidle_states & OPAL_PM_NAP_ENABLED)
> > + ppc_md.power_save = power7_idle;
> > out_free:
> > kfree(flags);
> > out:
> > diff --git a/arch/powerpc/platforms/powernv/setup.c
> > b/arch/powerpc/platforms/powernv/setup.c
> > index ee6430b..8492bbb 100644
> > --- a/arch/powerpc/platforms/powernv/setup.c
> > +++ b/arch/powerpc/platforms/powernv/setup.c
> > @@ -315,7 +315,7 @@ define_machine(powernv) {
> > .get_proc_freq = pnv_get_proc_freq,
> > .progress = pnv_progress,
> > .machine_shutdown = pnv_shutdown,
> > - .power_save = power7_idle,
> > + .power_save = NULL,
> > .calibrate_decr = generic_calibrate_decr,
> > #ifdef CONFIG_KEXEC
> > .kexec_cpu_down = pnv_kexec_cpu_down,
next prev parent reply other threads:[~2016-06-22 5:11 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-06-08 16:54 [PATCH v6 00/11] powerpc/powernv/cpuidle: Add support for POWER ISA v3 idle states Shreyas B. Prabhu
2016-06-08 16:54 ` [PATCH v6 01/11] powerpc/powernv: Use PNV_THREAD_WINKLE macro while requesting for winkle Shreyas B. Prabhu
2016-06-08 16:54 ` [PATCH v6 02/11] powerpc/kvm: make hypervisor state restore a function Shreyas B. Prabhu
2016-06-08 16:54 ` [PATCH v6 03/11] powerpc/powernv: Rename idle_power7.S to idle_power_common.S Shreyas B. Prabhu
2016-06-15 5:31 ` [v6, " Michael Ellerman
2016-06-08 16:54 ` [PATCH v6 04/11] powerpc/powernv: Rename reusable idle functions to hardware agnostic names Shreyas B. Prabhu
2016-06-08 16:54 ` [PATCH v6 05/11] powerpc/powernv: Make pnv_powersave_common more generic Shreyas B. Prabhu
2016-06-08 16:54 ` [PATCH v6 06/11] powerpc/powernv: abstraction for saving SPRs before entering deep idle states Shreyas B. Prabhu
2016-06-08 16:54 ` [PATCH v6 07/11] powerpc/powernv: set power_save func after the idle states are initialized Shreyas B. Prabhu
2016-06-15 5:41 ` [v6, " Michael Ellerman
2016-06-15 6:11 ` Shreyas B Prabhu
2016-06-22 1:54 ` [PATCH v6 " Benjamin Herrenschmidt
2016-06-22 5:11 ` Michael Neuling [this message]
2016-06-28 12:10 ` [v6, " Michael Ellerman
2016-06-08 16:54 ` [PATCH v6 08/11] powerpc/powernv: Add platform support for stop instruction Shreyas B. Prabhu
2016-06-15 11:14 ` [v6, " Michael Ellerman
2016-06-15 13:00 ` Shreyas B Prabhu
2016-06-21 6:14 ` Michael Neuling
2016-06-08 16:54 ` [PATCH v6 09/11] cpuidle/powernv: Use CPUIDLE_STATE_MAX instead of MAX_POWERNV_IDLE_STATES Shreyas B. Prabhu
2016-06-13 15:01 ` Daniel Lezcano
2016-06-13 20:58 ` Rafael J. Wysocki
2016-06-08 16:54 ` [PATCH v6 10/11] cpuidle/powernv: Add support for POWER ISA v3 idle states Shreyas B. Prabhu
2016-06-13 15:34 ` Daniel Lezcano
2016-06-14 10:47 ` Shreyas B Prabhu
2016-06-14 11:29 ` Benjamin Herrenschmidt
2016-06-15 4:57 ` Shreyas B Prabhu
2016-06-13 21:48 ` Benjamin Herrenschmidt
2016-06-14 11:11 ` Shreyas B Prabhu
2016-06-14 11:31 ` Benjamin Herrenschmidt
2016-06-08 16:54 ` [PATCH v6 11/11] powerpc/powernv: Use deepest stop state when cpu is offlined Shreyas B. Prabhu
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1466572287.8686.1.camel@neuling.org \
--to=mikey@neuling.org \
--cc=benh@au1.ibm.com \
--cc=ego@linux.vnet.ibm.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linuxppc-dev@lists.ozlabs.org \
--cc=maddy@linux.vnet.ibm.com \
--cc=mpe@ellerman.id.au \
--cc=shreyas@linux.vnet.ibm.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).