Hi Balbir,
On Tue, Sep 20, 2016 at 03:54:43PM +1000, Balbir Singh wrote:
> > diff --git a/arch/powerpc/platforms/powernv/idle.c
> > b/arch/powerpc/platforms/powernv/idle.c
> > index 479c256..c3d3fed 100644
> > --- a/arch/powerpc/platforms/powernv/idle.c
> > +++ b/arch/powerpc/platforms/powernv/id
From: "Gautham R. Shenoy"
This patch adds a function named power_enter_stop_lite() that can
execute a stop instruction when ESL and EC bits are set to zero in the
PSSCR. The function handles the wake-up from idle at the instruction
immediately after the stop instruction.
I
From: "Gautham R. Shenoy"
Currently all the low-power idle states are expected to wake up
at reset vector 0x100. Which is why the macro IDLE_STATE_ENTER_SEQ
that puts the CPU to an idle state and never returns.
On ISA_300, when the ESL and EC bits in the PSSCR are zero, the
CPU is e
From: "Gautham R. Shenoy"
Hi,
The Power ISA v3.0 allows us to execute the "stop" instruction with
ESL and EC of the PSSCR set to 0. This will ensure no loss of state,
and the wakeup from the stop will happen at an instruction following
the executed stop instruction.
This p
From: "Gautham R. Shenoy"
pnv_wakeup_tb_loss function currently expects the cr4 to be "eq" if
the CPU is waking up from a complete hypervisor state loss. Hence, it
currently restores the SPR contents only if cr4 is "eq".
However, after the commit bcef83a00dc4 (
From: "Gautham R. Shenoy"
cpu-idle on powernv currently has support for only snooze, nap and
fastsleep states. Winkle idle state was excluded due to its large
exit-latency.
This patch adds winkle as a cpu-idle state for experimental
purposes. This state is disabled at start by defaul
From: "Gautham R. Shenoy"
Hi,
The patches in these series enable support for Winkle idle state in
CPU-Idle.
The first patch is a platform-independent CPU-Idle patch that allows
CPU-Idle states to be disabled at start (Currently they are all
enabled by default).
The second patc
From: "Gautham R. Shenoy"
Currently all the idle states registered by a cpu-idle driver are
enabled by default. This patch adds a mechanism which allows the
driver to hint if an idle-state should start in a disabled state. The
cpu-idle core will use this hint to appropriately init
Hi Tejun,
On Thu, Jun 16, 2016 at 03:39:05PM -0400, Tejun Heo wrote:
> On Thu, Jun 16, 2016 at 02:45:48PM +0200, Peter Zijlstra wrote:
> > Subject: workqueue: Fix setting affinity of unbound worker threads
> > From: Peter Zijlstra
> > Date: Thu Jun 16 14:38:42 CEST 2016
> >
> > With commit e9d86
On Tue, Jun 21, 2016 at 09:47:19PM +0200, Peter Zijlstra wrote:
> On Tue, Jun 21, 2016 at 03:43:56PM -0400, Tejun Heo wrote:
> > On Tue, Jun 21, 2016 at 09:37:09PM +0200, Peter Zijlstra wrote:
> > > Hurm.. So I've applied it, just to get this issue sorted, but I'm not
> > > entirely sure I like it.
gt; in its allowed mask and ends up overriding it to cpu_possible_mask.
>
> CPU_ONLINE callbacks should be able to put kthreads on the CPU which
> is coming online. Update select_fallback_rq() so that it follows
> cpu_online() rather than cpu_active() for kthreads.
>
> Signed-off
Hello Tejun,
On Wed, Jun 15, 2016 at 11:53:50AM -0400, Tejun Heo wrote:
> Hello,
>
> On Tue, Jun 07, 2016 at 08:44:02PM +0530, Gautham R. Shenoy wrote:
> > Currently in the CPU_ONLINE workqueue handler, the
> > restore_unbound_workers_cpumask() will never call
> > s
On Wed, Jun 15, 2016 at 01:32:49PM +0200, Peter Zijlstra wrote:
> On Wed, Jun 15, 2016 at 03:49:36PM +0530, Gautham R Shenoy wrote:
>
> > Also, with the first patch in the series (which ensures that
> > restore_unbound_workers are called *after* the new workers for the
> >
Hi Peter,
On Tue, Jun 14, 2016 at 01:22:34PM +0200, Peter Zijlstra wrote:
> On Tue, Jun 07, 2016 at 08:44:03PM +0530, Gautham R. Shenoy wrote:
>
> I'm still puzzled why we don't see this on x86. Afaict there's nothing
> PPC specific about this.
You are right. On P
Hi Peter, Thomas,
On Tue, Jun 07, 2016 at 08:44:01PM +0530, Gautham R. Shenoy wrote:
> Hi,
>
> This patchset fixes a couple of issues in the CPU_ONLINE notification
> handling for the workqueues with respect to unbounded worker
threads.
Any thoughts on these patches ? They fix a ra
cpumask of the worker pool when it comes
online.
b) the cpumask of the worker pool when the second CPU in the pool's
cpumask comes online.
Reported-by: Abdul Haleem
Cc: Peter Zijlstra
Cc: Thomas Gleixner
Cc: Tejun Heo
Cc: Michael Ellerman
Signed-off-by: Gautham R. Shenoy
---
Cc: Michael Ellerman
Signed-off-by: Gautham R. Shenoy
---
kernel/workqueue.c | 8
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/kernel/workqueue.c b/kernel/workqueue.c
index e1c0e99..e412794 100644
--- a/kernel/workqueue.c
+++ b/kernel/workqueue.c
@@ -4638,6 +4638,10
6000 2fa3
409eff1c 813f0378 2f890001 419eff10 <0fe0> 4b08 6000 6000
---[ end trace cbc1c5cfbc9591d0 ]---
The patches are based on 4.7-rc2. I have tested the patches on a
multi-node x86_64 and a ppc64
Gautham R. Shenoy (2):
workqueue: Move wq_update_unbound_numa()
> Bits 60:63 - Requested Level
> Used to specify which power-saving level must be entered on executing
> stop instruction
>
> This patch adds support for stop instruction and PSSCR handling.
This version looks good to me.
Reviewed-by: Gautham R. Shenoy
--
Thanks and
CR value.
>
> This patch adds support for this new mechanism in cpuidle powernv driver.
>
> Cc: Rafael J. Wysocki
> Cc: Daniel Lezcano
> Cc: linux...@vger.kernel.org
> Cc: Michael Ellerman
> Cc: Paul Mackerras
> Cc: linuxppc-dev@lists.ozlabs.org
> Signe
Hi Shreyas,
On Mon, May 23, 2016 at 08:48:40PM +0530, Shreyas B. Prabhu wrote:
> @@ -412,7 +517,8 @@ subcore_state_restored:
> first_thread_in_core:
>
> /*
> - * First thread in the core waking up from fastsleep. It needs to
> + * First thread in the core waking up from any state
On Mon, May 23, 2016 at 08:48:38PM +0530, Shreyas B. Prabhu wrote:
> Create a function for saving SPRs before entering deep idle states.
> This function can be reused for POWER9 deep idle states.
>
> Signed-off-by: Shreyas B. Prabhu
Reviewed-by: Gauth
THREAD_STATE to power7_powersave_common
> from power7_enter_nap_mode and make it more generic by passing the rfid
> address as a function parameter.
>
> Also make function name more generic.
>
> Reviewed-by: Gautham R. Shenoy
> Signed-off-by: Shreyas B. Prabhu
> ---
>
> Suggested-by: Gautham R. Shenoy
> Signed-off-by: Shreyas B. Prabhu
> ---
> New in v3
>
> arch/powerpc/kernel/exceptions-64s.S| 6 +++---
> arch/powerpc/kernel/idle_power_common.S | 16
> arch/powerpc/kvm/book3s_hv_rmhandlers.S | 4 ++--
&
On Mon, May 23, 2016 at 08:48:35PM +0530, Shreyas B. Prabhu wrote:
> idle_power7.S handles idle entry/exit for POWER7, POWER8 and in next
> patch for POWER9. Rename the file to a non-hardware specific
> name.
>
> Signed-off-by: Shreyas B. Prabhu
Reviewed-by: Ga
Hi Shreyas,
On Wed, May 18, 2016 at 12:37:56PM +0530, Shreyas B Prabhu wrote:
[..snip..]
> >> diff --git a/arch/powerpc/kernel/exceptions-64s.S
> >> b/arch/powerpc/kernel/exceptions-64s.S
> >> index 7716ceb..7ebfbb0 100644
> >> --- a/arch/powerpc/kernel/exceptions-64s.S
> >> +++ b/arch/powerpc/k
On Tue, May 03, 2016 at 01:54:34PM +0530, Shreyas B. Prabhu wrote:
> Move idle related macros to a common location asm/cpuidle.h so that
> they can be used for stop instruction support.
>
> Signed-off-by: Shreyas B. Prabhy
Reviewed-by: Gautham R. Shenoy
--
Thanks and Reg
On Wed, May 18, 2016 at 12:21:17PM +0530, Shreyas B Prabhu wrote:
> With this patch, r5 which is the third parameter to
> power_powersave_common contains the return address that needs to be
> written to SRR0. So here I'm keeping r5 unaltered and using r7 for the MSR.
Ok.
Reviewed
On Tue, May 03, 2016 at 01:54:38PM +0530, Shreyas B. Prabhu wrote:
> If hardware supports stop state, use the deepest stop state when
>
> the cpu is offlined.
>
> Signed-off-by: Shreyas B. Prabhu
Reviewed-by: Gautham R. Shenoy
--
Thanks and
Hi Shreyas,
On Tue, May 03, 2016 at 01:54:36PM +0530, Shreyas B. Prabhu wrote:
> POWER ISA v3 defines a new idle processor core mechanism. In summary,
> a) new instruction named stop is added. This instruction replaces
> instructions like nap, sleep, rvwinkle.
> b) new per thread SPR named
reyas B. Prabhy
Reviewed-by: Gautham R. Shenoy
> ---
> 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/plat
Hi Shreyas,
On Tue, May 03, 2016 at 01:54:33PM +0530, Shreyas B. Prabhu wrote:
> power7_powersave_common does common steps needed before entering idle
> state and eventually changes MSR to MSR_IDLE and does rfid to
> power7_enter_nap_mode.
>
> Make it more generic by passing the rfid address as a
Hi Shreyas,
On Tue, May 03, 2016 at 01:54:32PM +0530, Shreyas B. Prabhu wrote:
> CPU-idle related code like context save/restore functions idle_power7.S
> can reused for adding stop instruction support. Move this
> code to a new commonly accessible location.
[..snip..]
> diff --git a/arch/powerp
Hi Shreyas,
On Tue, May 03, 2016 at 01:54:31PM +0530, Shreyas B. Prabhu wrote:
> In the current code, when the thread wakes up in reset vector, some
> of the state restore code and check for whether a thread needs to
> branch to kvm is duplicated. Reorder the code such that this
> duplication is a
to facilitate the invocation of
CHECK_HMI_INTERRUPT in some later patch ? In this case you could
add this to the commit message.
Otherwise,
Reviewed-by: Gautham R. Shenoy
> ---
> arch/powerpc/include/asm/exception-64s.h | 18 ++
> arch/powerpc/kernel/idle_power7.S| 20
Hi Viresh,
>
> What I can suggest is:
> - Move this directory inside cpuX/cpufreq/ directory, in a similar way
> as to how we create 'stats' directory today.
> - You can then get policy->cpu, to get chip->id out of it.
> - The only disadvantage here is that the same chip directory will be
> r
Hi Shilpa,
A minor nit.
On Thu, Jan 28, 2016 at 12:55:41PM +0530, Shilpasri G Bhat wrote:
[..snip..]
> +
> +What:
> /sys/devices/system/cpu/cpufreq/chip*/throttle_reasons/
> +Date:Jan 2016
> +Contact: Linux kernel mailing list
> + Linux for PowerPC
ts
> like throttle below nominal frequency and OCC_RESET are reduced to
> pr_warn/pr_warn_once as pointed by MFG to not mark them as critical
> messages. This patch adds 'throttle_reason' to struct chip to store the
> throttle reason.
>
> Signed-off-by: Shilpasri G
chip ids for all cores in the array 'core_to_chip_map' and use it
> in the hotpath.
>
> Reported-by: Anton Blanchard
> Signed-off-by: Shilpasri G Bhat
Reviewed-by: Gautham R. Shenoy
--
Thanks and Regards
gautham.
___
Linu
On Thu, Jan 28, 2016 at 12:55:36PM +0530, Shilpasri G Bhat wrote:
> This will free the dynamically allocated memory of'chips' on
> module exit.
>
> Signed-off-by: Shilpasri G Bhat
Reviewed-by: Gautham R. Shenoy
--
Than
ary overhead
> > in a hot path. So instead of calling cpu_to_chip_id() everytime cache
> > the chip ids for all cores in the array 'core_to_chip_map' and use it
> > in the hotpath.
> >
> > Reported-by: Anton Blanchard
> > Signed-off-by: Shilpasri
On Thu, Jan 21, 2016 at 03:08:59PM +0530, Shilpasri G Bhat wrote:
> Signed-off-by: Shilpasri G Bhat
Reviewed-by: Gautham R. Shenoy
--
Thanks and Regards
gautham.
___
Linuxppc-dev mailing list
Linuxppc-dev@lists.ozlabs.org
https://lists.ozlabs.
Hi Shilpa,
On Tue, Jan 12, 2016 at 04:24:27AM -0600, Shilpasri G Bhat wrote:
> +static inline int get_chip_index(struct kobject *kobj)
Probably have "get_chip_index(int id)". See the reason below.
> +{
> + int i, id;
> +
> + i = kstrtoint(kobj->name + 4, 0, &id);
> + if (i)
> +
Hi Shilpa,
Just saw this resend!
On Tue, Jan 12, 2016 at 04:24:26AM -0600, Shilpasri G Bhat wrote:
> Record the throttle event with a trace print replacing the printk,
> except for events like throttling below nominal and occ reset
> event which print a warning message.
>
> Signed-off-by: Shilpa
), we
can unconditionally clear the doorbell message in
kvmppc_check_wake_reason.
Signed-off-by: Gautham R. Shenoy
---
arch/powerpc/kvm/book3s_hv_rmhandlers.S | 17 ++---
1 file changed, 14 insertions(+), 3 deletions(-)
diff --git a/arch/powerpc/kvm/book3s_hv_rmhandlers.S
b/arch/powerp
Hi Sam,
On Fri, Aug 14, 2015 at 03:07:28PM +1000, Sam Bobroff wrote:
> On Thu, May 21, 2015 at 01:57:04PM +0530, Gautham R. Shenoy wrote:
> > In guest_exit_cont we call kvmhv_commence_exit which expects the trap
> > number as the argument. However r3 doesn't contain the tra
core path.
Signed-off-by: Gautham R. Shenoy
---
[v1 --> v2: Moved defn of update_hid0 to reg.h from kvm_ppc.h]
[v2 --> v3: Renamed to update_power8_hid0 and used asm volatile]
arch/powerpc/include/asm/reg.h | 9 +
arch/powerpc/platforms/powernv/subcore.c | 4 ++--
2 fi
Hi Segher,
Thanks for the suggestions. I will rename the function to
update_power8_hid0() and use asm volatile.
On Tue, Aug 04, 2015 at 09:30:57PM -0500, Segher Boessenkool wrote:
> On Tue, Aug 04, 2015 at 08:08:58PM +1000, Michael Ellerman wrote:
> > > +static inline void update_hid0(unsigned l
path.
Signed-off-by: Gautham R. Shenoy
---
[v1--> v2: Moved defn of update_hid0 to reg.h from kvm_ppc.h]
arch/powerpc/include/asm/reg.h | 13 +
arch/powerpc/platforms/powernv/subcore.c | 4 ++--
2 files changed, 15 insertions(+), 2 deletions(-)
diff --git a/arch/powerpc
Hi Michael,
On Tue, Aug 04, 2015 at 08:08:58PM +1000, Michael Ellerman wrote:
> On Tue, 2015-04-08 at 08:30:58 UTC, "Gautham R. Shenoy" wrote:
> > Section 3.7 of Version 1.2 of the Power8 Processor User's Manual
> > prescribes that updates to HID0 be prec
igned-off-by: Gautham R. Shenoy
---
arch/powerpc/include/asm/kvm_ppc.h | 11 +++
arch/powerpc/platforms/powernv/subcore.c | 4 ++--
2 files changed, 13 insertions(+), 2 deletions(-)
diff --git a/arch/powerpc/include/asm/kvm_ppc.h
b/arch/powerpc/include/asm/kvm_ppc.h
index c6
_exit as
r12 contains the trap number
Signed-off-by: Gautham R. Shenoy
---
arch/powerpc/kvm/book3s_hv_rmhandlers.S | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/powerpc/kvm/book3s_hv_rmhandlers.S
b/arch/powerpc/kvm/book3s_hv_rmhandlers.S
index 4d70df2..f0d7c54 100644
--- a/arch/powerp
he pstate_id to go out of bounds ?
Otherwise it looks ok.
Acked-by: Gautham R. Shenoy
> + }
>
> return powernv_freqs[i].frequency;
> }
--
Thanks and Regards
gautham.
___
Linuxppc-dev mailing list
Linuxppc-dev@lists.ozlabs.org
https://lists.ozlabs.org/listinfo/linuxppc-dev
From: "Gautham R. Shenoy"
Enable CPUFreq for PowerNV. Select "performance", "powersave",
"userspace" and "ondemand" governors. Choose "ondemand" to be the
default governor.
Signed-off-by: Gautham R. Shenoy
Signed-off-by: Srivatsa
From: "Gautham R. Shenoy"
The .driver_data field in the cpufreq_frequency_table was supposed to
be private to the drivers. However at some later point, it was being
used to indicate if the particular frequency in the table is the
BOOST_FREQUENCY. After patches [1] and [2], the .driv
_freq by setting powernv_cpufreq_driver.get to
powernv_cpufreq_get(). [Authored by e...@linux.vnet.ibm.com]
[Change log updated by e...@linux.vnet.ibm.com]
Reviewed-by: Preeti U Murthy
Signed-off-by: Vaidyanathan Srinivasan
Signed-off-by: Srivatsa S. Bhat
Signed-off-by: Anton Blanchard
Signed-off-by: G
From: "Gautham R. Shenoy"
The .driver_data field in the cpufreq_frequency_table was supposed to
be private to the drivers. However at some later point, it was being
used to indicate if the particular frequency in the table is the
BOOST_FREQUENCY. After patches [1] and [2], the .driv
From: "Gautham R. Shenoy"
Enable CPUFreq for PowerNV. Select "performance", "powersave",
"userspace" and "ondemand" governors. Choose "ondemand" to be the
default governor.
Signed-off-by: Gautham R. Shenoy
Signed-off-by: Srivatsa
_freq by setting powernv_cpufreq_driver.get to
powernv_cpufreq_get(). [Authored by e...@linux.vnet.ibm.com]
[Change log updated by e...@linux.vnet.ibm.com]
Reviewed-by: Preeti U Murthy
Signed-off-by: Vaidyanathan Srinivasan
Signed-off-by: Srivatsa S. Bhat
Signed-off-by: Anton Blanchard
Signed-off-by: G
From: "Gautham R. Shenoy"
Hi,
This is v5 of the patchset to enable dynamic frequency scaling on IBM
PowerNV platforms. This patchset does address all the review comments
obtained for v4 (which can be found at [1]).
Changes from v4:
* Created a separate patch to select the CPUFr
On Thu, Mar 27, 2014 at 03:29:36PM +0530, Viresh Kumar wrote:
> On 27 March 2014 15:00, Gautham R Shenoy wrote:
> > As of now, I prefer this patch be based on code that is in the -next
> > tree. I'll get rid of the per-core locking once the serialization
> > pat
On Thu, Mar 27, 2014 at 12:09:53PM +0530, Viresh Kumar wrote:
> Cc'ing Rafael.
>
Thanks. It was a lapse on my part by not Cc'ing Rafael in the first
place.
> On 26 March 2014 22:25, Gautham R. Shenoy wrote:
> > From: Vaidyanathan Srinivasan
> >
> > Back
Murthy
Signed-off-by: Vaidyanathan Srinivasan
Signed-off-by: Srivatsa S. Bhat
Signed-off-by: Anton Blanchard
Signed-off-by: Gautham R. Shenoy
---
arch/powerpc/configs/pseries_defconfig| 1 +
arch/powerpc/configs/pseries_le_defconfig | 1 +
arch/powerpc/include/asm/reg.h| 4 +
a
From: "Gautham R. Shenoy"
Hi,
This is the v4 of the patchset to enable Dynamic Frequency Scaling
on IBM PowerNV Platforms. I have incorporated the review comments
from the previous version (can be found at [1]).
In this version,
* Multiple patches from the previous version have
Hi Ben,
On Sat, Mar 22, 2014 at 09:56:30AM +1100, Benjamin Herrenschmidt wrote:
> On Fri, 2014-03-21 at 16:34 +0530, Gautham R Shenoy wrote:
>
> > > >
> > > > +/*
> > > > + * Computes the current frequency on this cpu
> > > > + * and stores
On Fri, Mar 21, 2014 at 04:24:27PM +0530, Viresh Kumar wrote:
> >> > +static int powernv_cpufreq_cpu_init(struct cpufreq_policy *policy)
> >> > +{
> >> > + int base, i;
> >> > +
> >> > + base = cpu_first_thread_sibling(policy->cpu);
> >> > +
> >> > + for (i = 0; i < threads_per_co
On Fri, Mar 21, 2014 at 06:42:50PM +0530, Viresh Kumar wrote:
> On 21 March 2014 18:34, Gautham R Shenoy wrote:
> > Consider the case when pmspr = 0x00fe;
> >
> > We are interested in extracting the value 'fe'. And ensure that when
> > we store th
Hi Viresh,
On Fri, Mar 21, 2014 at 04:24:27PM +0530, Viresh Kumar wrote:
> On 21 March 2014 16:13, Gautham R Shenoy wrote:
> > On Fri, Mar 21, 2014 at 02:11:32PM +0530, Viresh Kumar wrote:
>
> >> > + pr_debug("PState i
On Fri, Mar 21, 2014 at 05:15:34PM +0530, Viresh Kumar wrote:
> On 21 March 2014 16:34, Gautham R Shenoy wrote:
> > Heh! Well, that wasn't the reason why this was sent out as a separate
> > patch, but never mind. Though I don't understand why it would be
> > diffi
On Fri, Mar 21, 2014 at 12:01:07PM +, David Laight wrote:
> From: Viresh Kumar
>
> > On 21 March 2014 16:34, Gautham R Shenoy wrote:
> > > Heh! Well, that wasn't the reason why this was sent out as a separate
> > > patch, but never mind. Though
On Fri, Mar 21, 2014 at 03:01:29PM +0530, Viresh Kumar wrote:
> On Thu, Mar 20, 2014 at 5:41 PM, Gautham R. Shenoy
> wrote:
> > From: "Gautham R. Shenoy"
> >
> > The current frequency of a cpu is reported through the sysfs file
> > cpuinfo_cur_freq.
Hi Viresh,
On Fri, Mar 21, 2014 at 02:11:32PM +0530, Viresh Kumar wrote:
> On Thu, Mar 20, 2014 at 5:40 PM, Gautham R. Shenoy
> wrote:
> > From: Vaidyanathan Srinivasan
>
> Hi Vaidy,
>
> > diff --git a/drivers/cpufreq/Kconfig b/drivers/cpufreq/Kconfig
> &
On Fri, Mar 21, 2014 at 02:17:28PM +0530, Viresh Kumar wrote:
> > +static ssize_t show_cpuinfo_nominal_freq(struct cpufreq_policy *policy,
> > + char *buf)
> > +{
> > + int nominal_freq;
> > + nominal_freq =
> > pstate_id_to_freq(powernv_pstate_inf
Hi Viresh,
On Fri, Mar 21, 2014 at 01:16:03PM +0530, Viresh Kumar wrote:
> On Thu, Mar 20, 2014 at 5:40 PM, Gautham R. Shenoy
> wrote:
> > This is the v3 of the consolidated patchset consisting
> > patches for enabling cpufreq on IBM POWERNV platforms
> > along with some
On Thu, Mar 20, 2014 at 05:41:00PM +0530, Gautham R. Shenoy wrote:
> From: "Gautham R. Shenoy"
>
> The current frequency of a cpu is reported through the sysfs file
> cpuinfo_cur_freq. This requires the driver to implement a
> "->get(unsigned int cpu)"
On Thu, Mar 20, 2014 at 05:40:58PM +0530, Gautham R. Shenoy wrote:
> From: "Gautham R. Shenoy"
>
> Create a helper routine that can return the cpu-frequency for the
> corresponding pstate_id.
>
> Also, cache the values of the pstate_max, pstate_min and
> pst
On Thu, Mar 20, 2014 at 05:40:57PM +0530, Gautham R. Shenoy wrote:
> From: "Srivatsa S. Bhat"
>
> On POWER systems, the CPU frequency is controlled at a core-level and
> hence we need to serialize so that only one of the threads in the core
> switches the core's fre
From: "Gautham R. Shenoy"
The current frequency of a cpu is reported through the sysfs file
cpuinfo_cur_freq. This requires the driver to implement a
"->get(unsigned int cpu)" method which will return the current
operating frequency.
Implement a function named powernv_cp
From: "Gautham R. Shenoy"
Create a driver attribute named cpuinfo_nominal_freq which
creates a sysfs read-only file named cpuinfo_nominal_freq. Export
the frequency corresponding to the nominal_pstate through this
interface.
Nominal frequency is the highest non-turbo frequency for th
From: "Gautham R. Shenoy"
Create a helper routine that can return the cpu-frequency for the
corresponding pstate_id.
Also, cache the values of the pstate_max, pstate_min and
pstate_nominal and nr_pstates in a static structure so that they can
be reused in the future to perform any v
er-CPU lock and use the ones that belongs to the first
thread sibling of the core.
cpu_first_thread_sibling() macro is used to find the *common* lock for
all thread siblings belonging to a core.
Signed-off-by: Srivatsa S. Bhat
Signed-off-by: Vaidyanathan Srinivasan
Signed-off-by: Ga
]
Signed-off-by: Vaidyanathan Srinivasan
Signed-off-by: Srivatsa S. Bhat
Signed-off-by: Anton Blanchard
Signed-off-by: Gautham R. Shenoy
---
arch/powerpc/include/asm/reg.h | 4 +
arch/powerpc/platforms/powernv/Kconfig | 1 +
drivers/cpufreq/Kconfig| 1 +
drivers/cpufreq
From: "Gautham R. Shenoy"
Hi,
This is the v3 of the consolidated patchset consisting
patches for enabling cpufreq on IBM POWERNV platforms
along with some enhancements. I have incorporated the review
for v2 (which can be found at [1]).
- This patchset contains code for the platform
On Wed, Mar 19, 2014 at 12:05:20PM +0530, Srivatsa S. Bhat wrote:
> On 03/19/2014 05:07 AM, Benjamin Herrenschmidt wrote:
> > On Mon, 2014-03-10 at 16:40 +0530, Gautham R. Shenoy wrote:
> >> From: "Srivatsa S. Bhat"
> >>
> >> Create a helper method
From: "Gautham R. Shenoy"
Hi,
Currently, the code in setup-common.c for powerpc assumes that all
clock rates are same in a smp system. This value is cached in the
variable named ppc_proc_freq and is the value that is reported in
/proc/cpuinfo.
However on the PowerNV platform, the clo
From: "Gautham R. Shenoy"
Implement a method named pnv_get_proc_freq(unsigned int cpu) which
returns the current clock rate on the 'cpu' in Hz to be reported in
/proc/cpuinfo. This method uses the value reported by cpufreq when
such a value is sane. Otherwise it fall
From: "Gautham R. Shenoy"
Currently, the code in setup-common.c for powerpc assumes that all
clock rates are same in a smp system. This value is cached in the
variable named ppc_proc_freq and is the value that is reported in
/proc/cpuinfo.
However on the PowerNV platform, the clock ra
From: "Gautham R. Shenoy"
Create a helper routine that can return the cpu-frequency for the
corresponding pstate_id.
Also, cache the values of the pstate_max, pstate_min and
pstate_nominal and nr_pstates in a static structure so that they can
be reused in the future to perform any v
From: "Gautham R. Shenoy"
The current frequency of a cpu is reported through the sysfs file
cpuinfo_cur_freq. This requires the driver to implement a
"->get(unsigned int cpu)" method which will return the current
operating frequency.
Implement a function named powernv_cp
Signed-off-by: Srivatsa S. Bhat
Signed-off-by: Gautham R. Shenoy
---
drivers/cpufreq/powernv-cpufreq.c | 24 ++--
1 file changed, 18 insertions(+), 6 deletions(-)
diff --git a/drivers/cpufreq/powernv-cpufreq.c
b/drivers/cpufreq/powernv-cpufreq.c
index ab1551f..4cad727 100644
--- a/dr
er-CPU lock and use the ones that belongs to the first
thread sibling of the core.
cpu_first_thread_sibling() macro is used to find the *common* lock for
all thread siblings belonging to a core.
Signed-off-by: Srivatsa S. Bhat
Signed-off-by: Vaidyanathan Srinivasan
Signed-off-by: Ga
idyanathan Srinivasan
Signed-off-by: Srivatsa S. Bhat
Signed-off-by: Anton Blanchard
Signed-off-by: Gautham R. Shenoy
---
arch/powerpc/include/asm/reg.h | 4 +
arch/powerpc/platforms/powernv/Kconfig | 1 +
drivers/cpufreq/Kconfig| 1 +
drivers/cpufreq/Kconfig.powerpc
From: "Gautham R. Shenoy"
Create a driver attribute named cpuinfo_nominal_freq which
creates a sysfs read-only file named cpuinfo_nominal_freq. Export
the frequency corresponding to the nominal_pstate through this
interface.
Nominal frequency is the highest non-turbo frequency for th
From: "Gautham R. Shenoy"
Hi,
This is the v2 of the consolidated patchset consisting
patches for enabling cpufreq on IBM POWERNV platforms
along with some enhancements.
The v1 of these patches have been previously
submitted on linuxppc-dev [1][2].
- This patchset contains co
Hello Ben,
On Fri, Mar 07, 2014 at 01:57:31PM +1100, Benjamin Herrenschmidt wrote:
> On Fri, 2014-02-14 at 13:22 +0530, Srivatsa S. Bhat wrote:
> > Subsystems that want to register CPU hotplug callbacks, as well as perform
> > initialization for the CPUs that are already online, often do it as sho
From: "Gautham R. Shenoy"
The current frequency of a cpu is reported through the sysfs file
cpuinfo_cur_freq. This requires the driver to implement a
"->get(unsigned int cpu)" method which will return the current
operating frequency.
Implement a function named powe
From: "Gautham R. Shenoy"
Hi,
On IBM POWERNV platforms[1], presently we do not report the current
operating frequency of the processor through the sysfs interface
"cpuinfo_cur_freq" since the cpu frequency driver[1] has not
implemented the ->get(unsigned int c
From: "Gautham R. Shenoy"
Create a driver attribute named cpuinfo_nominal_frequency which
creates a sysfs read-only file named cpuinfo_nominal_frequency. Export
the frequency corresponding to the nominal_pstate through this
interface.
Signed-off-by: Gautham R. Shenoy
---
drive
From: "Gautham R. Shenoy"
Create a helper routine that can return the cpu-frequency for the
corresponding pstate_id.
Also, cache the values of the pstate_max, pstate_min and
pstate_nominal and nr_pstates in a static structure so that they can
be reused in the future to perform any v
From: "Gautham R. Shenoy"
Move the code that computes the cpumask corresponding to the
thread-siblings of a cpu to a new method named
powernv_cpu_to_core_mask() so that it can be used by other places in
the code.
Signed-off-by: Gautham R. Shenoy
---
drivers/cpufreq/powernv-cpuf
501 - 600 of 626 matches
Mail list logo
