On 11 Jun 22, Catalin Marinas wrote:
> On Tue, Jun 21, 2011 at 01:36:15PM -0700, Stephen Boyd wrote:
> > On 06/16/2011 11:54 PM, Vincent Guittot wrote:
> > > On 16 June 2011 21:40, Stephen Boyd wrote:
> > >> The ARM ARM says these fields are IMPLEMENTATION DEFINED meaning that
> > >> different ven
On Tue, Jun 21, 2011 at 01:36:15PM -0700, Stephen Boyd wrote:
> On 06/16/2011 11:54 PM, Vincent Guittot wrote:
> > On 16 June 2011 21:40, Stephen Boyd wrote:
> >> The ARM ARM says these fields are IMPLEMENTATION DEFINED meaning that
> >> different vendors may attribute different meaning to these f
On 06/16/2011 11:54 PM, Vincent Guittot wrote:
> On 16 June 2011 21:40, Stephen Boyd wrote:
>> The ARM ARM says these fields are IMPLEMENTATION DEFINED meaning that
>> different vendors may attribute different meaning to these fields if
>> they wish. Does that mean this should be a platform_*() fu
On 06/16/2011 01:49 AM, Vincent Guittot wrote:
> +config SCHED_MC
> + bool "Multi-core scheduler support"
> + depends on SMP && ARM_CPU_TOPOLOGY
> + default n
> + help
> + Multi-core scheduler support improves the CPU scheduler's decision
> + making when dealing with mul
On 16 June 2011 23:13, Russell King - ARM Linux wrote:
> On Thu, Jun 16, 2011 at 10:49:13AM +0200, Vincent Guittot wrote:
>> @@ -219,6 +219,24 @@ source "kernel/Kconfig.freezer"
>>
>> menu "System Type"
>>
>> +config SCHED_MC
>> + bool "Multi-core scheduler support"
>> + depends on SMP &&
On 16 June 2011 21:40, Stephen Boyd wrote:
> On 06/16/2011 01:49 AM, Vincent Guittot wrote:
>> +config SCHED_MC
>> + bool "Multi-core scheduler support"
>> + depends on SMP && ARM_CPU_TOPOLOGY
>> + default n
>> + help
>> + Multi-core scheduler support improves the CPU schedul
On Thu, Jun 16, 2011 at 10:49:13AM +0200, Vincent Guittot wrote:
> @@ -219,6 +219,24 @@ source "kernel/Kconfig.freezer"
>
> menu "System Type"
>
> +config SCHED_MC
> + bool "Multi-core scheduler support"
> + depends on SMP && ARM_CPU_TOPOLOGY
> + default n
> + help
> + Mult
On 16 June 2011 15:24, Christian Robottom Reis wrote:
> On Thu, Jun 16, 2011 at 10:49:13AM +0200, Vincent Guittot wrote:
>> @@ -219,6 +219,24 @@ source "kernel/Kconfig.freezer"
>>
>> menu "System Type"
>>
>> +config SCHED_MC
>> + bool "Multi-core scheduler support"
>> + depends on SMP &&
Hello,
Vincent Guittot, le Thu 16 Jun 2011 10:49:13 +0200, a écrit :
> The affinity between Arm processors is defined in the MPIDR register.
> We can identify which processors are in the same cluster,
> and which ones have performance interdependency. The cpu topology
> of an Arm platform can be
Vincent Guittot, le Thu 16 Jun 2011 11:44:30 +0200, a écrit :
> The output of hwloc-gather-topology is :
>
> Machine (phys=0 local=280840KB total=280840KB)
> Socket #0 (phys=3)
> Core #0 (phys=0)
> PU #0 (phys=0)
> Core #1 (phys=1)
> PU #1 (phys=1)
> depth 0:1 Machine
On Thu, Jun 16, 2011 at 10:49:13AM +0200, Vincent Guittot wrote:
> @@ -219,6 +219,24 @@ source "kernel/Kconfig.freezer"
>
> menu "System Type"
>
> +config SCHED_MC
> + bool "Multi-core scheduler support"
> + depends on SMP && ARM_CPU_TOPOLOGY
> + default n
> + help
> + Mult
On 16 June 2011 13:48, Amit Kucheria wrote:
> On 11 Jun 16, Vincent Guittot wrote:
>> The affinity between Arm processors is defined in the MPIDR register.
>> We can identify which processors are in the same cluster,
>> and which ones have performance interdependency. The cpu topology
>> of an Ar
On 16 June 2011 13:55, Amit Kachhap wrote:
> I have some doubts about the bit fields of the MPIDR register.
> Comments added below.
> On 16 June 2011 14:19, Vincent Guittot wrote:
>> The affinity between Arm processors is defined in the MPIDR register.
>> We can identify which processors are in t
On 16 June 2011 12:49, Daniel Lezcano wrote:
> On 06/16/2011 10:49 AM, Vincent Guittot wrote:
>>
>> The affinity between Arm processors is defined in the MPIDR register.
>> We can identify which processors are in the same cluster,
>> and which ones have performance interdependency. The cpu topolog
I have some doubts about the bit fields of the MPIDR register.
Comments added below.
On 16 June 2011 14:19, Vincent Guittot wrote:
> The affinity between Arm processors is defined in the MPIDR register.
> We can identify which processors are in the same cluster,
> and which ones have performance i
On 11 Jun 16, Vincent Guittot wrote:
> The affinity between Arm processors is defined in the MPIDR register.
> We can identify which processors are in the same cluster,
> and which ones have performance interdependency. The cpu topology
> of an Arm platform can be set thanks to this register and t
On 06/16/2011 10:49 AM, Vincent Guittot wrote:
The affinity between Arm processors is defined in the MPIDR register.
We can identify which processors are in the same cluster,
and which ones have performance interdependency. The cpu topology
of an Arm platform can be set thanks to this register
On 16 June 2011 11:47, Samuel Thibault wrote:
> Vincent Guittot, le Thu 16 Jun 2011 11:44:30 +0200, a écrit :
>> The output of hwloc-gather-topology is :
>>
>> Machine (phys=0 local=280840KB total=280840KB)
>> Socket #0 (phys=3)
>> Core #0 (phys=0)
>> PU #0 (phys=0)
>> Core #1 (phy
On 16 June 2011 10:55, Samuel Thibault wrote:
> Hello,
>
> Vincent Guittot, le Thu 16 Jun 2011 10:49:13 +0200, a écrit :
>> The affinity between Arm processors is defined in the MPIDR register.
>> We can identify which processors are in the same cluster,
>> and which ones have performance interdep
The affinity between Arm processors is defined in the MPIDR register.
We can identify which processors are in the same cluster,
and which ones have performance interdependency. The cpu topology
of an Arm platform can be set thanks to this register and this topology
is then used by sched_mc and sch
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