Hi Steve,
On 06/12/2018 16:40, Steven Sistare wrote:
> [...]
>>
>> Ah yes, that would work. Thing is, I had excluded having the misfit masks
>> being in the sd_llc_shareds, since from a logical standpoint they don't
>> really belong there.
>>
>> With asymmetric CPU capacities we kind of disregard
Hi Steve,
On 06/12/2018 16:40, Steven Sistare wrote:
> [...]
>>
>> Ah yes, that would work. Thing is, I had excluded having the misfit masks
>> being in the sd_llc_shareds, since from a logical standpoint they don't
>> really belong there.
>>
>> With asymmetric CPU capacities we kind of disregard
On 12/3/2018 11:56 AM, Valentin Schneider wrote:
> Hi Steve,
> On 26/11/2018 19:06, Steven Sistare wrote:
>> [...]
>>> Mmm I was thinking we could abuse the wrap() and start at
>>> (fls(prev_span) + 1), but we're not guaranteed to have contiguous spans -
>>> the Arm Juno for instance has [0, 3,
On 12/3/2018 11:56 AM, Valentin Schneider wrote:
> Hi Steve,
> On 26/11/2018 19:06, Steven Sistare wrote:
>> [...]
>>> Mmm I was thinking we could abuse the wrap() and start at
>>> (fls(prev_span) + 1), but we're not guaranteed to have contiguous spans -
>>> the Arm Juno for instance has [0, 3,
Hi Steve,
On 26/11/2018 19:06, Steven Sistare wrote:
> [...]
>> Mmm I was thinking we could abuse the wrap() and start at
>> (fls(prev_span) + 1), but we're not guaranteed to have contiguous spans -
>> the Arm Juno for instance has [0, 3, 4], [1, 2] as MC-level domains, so
>> that goes down the
Hi Steve,
On 26/11/2018 19:06, Steven Sistare wrote:
> [...]
>> Mmm I was thinking we could abuse the wrap() and start at
>> (fls(prev_span) + 1), but we're not guaranteed to have contiguous spans -
>> the Arm Juno for instance has [0, 3, 4], [1, 2] as MC-level domains, so
>> that goes down the
On 11/20/2018 7:42 AM, Valentin Schneider wrote:
> On 19/11/2018 17:33, Steven Sistare wrote:
> [...]
>>>
>>> Thinking about misfit stealing, we can't use the sd_llc_shared's because
>>> on big.LITTLE misfit migrations happen across LLC domains.
>>>
>>> I was thinking of adding a misfit sparsemask
On 11/20/2018 7:42 AM, Valentin Schneider wrote:
> On 19/11/2018 17:33, Steven Sistare wrote:
> [...]
>>>
>>> Thinking about misfit stealing, we can't use the sd_llc_shared's because
>>> on big.LITTLE misfit migrations happen across LLC domains.
>>>
>>> I was thinking of adding a misfit sparsemask
On 19/11/2018 17:32, Steven Sistare wrote:
> On 11/9/2018 12:38 PM, Valentin Schneider wrote:
>> Hi Steve,
>>
>> On 09/11/2018 12:50, Steve Sistare wrote:
>> [...]
>>> @@ -482,6 +484,10 @@ static void update_top_cache_domain(int cpu)
>>> dirty_sched_domain_sysctl(cpu);
>>>
On 19/11/2018 17:32, Steven Sistare wrote:
> On 11/9/2018 12:38 PM, Valentin Schneider wrote:
>> Hi Steve,
>>
>> On 09/11/2018 12:50, Steve Sistare wrote:
>> [...]
>>> @@ -482,6 +484,10 @@ static void update_top_cache_domain(int cpu)
>>> dirty_sched_domain_sysctl(cpu);
>>>
On 19/11/2018 17:33, Steven Sistare wrote:
[...]
>>
>> Thinking about misfit stealing, we can't use the sd_llc_shared's because
>> on big.LITTLE misfit migrations happen across LLC domains.
>>
>> I was thinking of adding a misfit sparsemask to the root_domain, but
>> then I thought we could do the
On 19/11/2018 17:33, Steven Sistare wrote:
[...]
>>
>> Thinking about misfit stealing, we can't use the sd_llc_shared's because
>> on big.LITTLE misfit migrations happen across LLC domains.
>>
>> I was thinking of adding a misfit sparsemask to the root_domain, but
>> then I thought we could do the
On 11/12/2018 11:42 AM, Valentin Schneider wrote:
> Hi Steve,
>
> On 09/11/2018 12:50, Steve Sistare wrote:
>> From: Steve Sistare
>>
>> Define and initialize a sparse bitmap of overloaded CPUs, per
>> last-level-cache scheduling domain, for use by the CFS scheduling class.
>> Save a pointer to
On 11/12/2018 11:42 AM, Valentin Schneider wrote:
> Hi Steve,
>
> On 09/11/2018 12:50, Steve Sistare wrote:
>> From: Steve Sistare
>>
>> Define and initialize a sparse bitmap of overloaded CPUs, per
>> last-level-cache scheduling domain, for use by the CFS scheduling class.
>> Save a pointer to
On 11/9/2018 12:38 PM, Valentin Schneider wrote:
> Hi Steve,
>
> On 09/11/2018 12:50, Steve Sistare wrote:
> [...]
>> @@ -482,6 +484,10 @@ static void update_top_cache_domain(int cpu)
>> dirty_sched_domain_sysctl(cpu);
>> destroy_sched_domains(tmp);
>>
>> +sd =
On 11/9/2018 12:38 PM, Valentin Schneider wrote:
> Hi Steve,
>
> On 09/11/2018 12:50, Steve Sistare wrote:
> [...]
>> @@ -482,6 +484,10 @@ static void update_top_cache_domain(int cpu)
>> dirty_sched_domain_sysctl(cpu);
>> destroy_sched_domains(tmp);
>>
>> +sd =
Hi Steve,
On 09/11/2018 12:50, Steve Sistare wrote:
> From: Steve Sistare
>
> Define and initialize a sparse bitmap of overloaded CPUs, per
> last-level-cache scheduling domain, for use by the CFS scheduling class.
> Save a pointer to cfs_overload_cpus in the rq for efficient access.
>
>
Hi Steve,
On 09/11/2018 12:50, Steve Sistare wrote:
> From: Steve Sistare
>
> Define and initialize a sparse bitmap of overloaded CPUs, per
> last-level-cache scheduling domain, for use by the CFS scheduling class.
> Save a pointer to cfs_overload_cpus in the rq for efficient access.
>
>
Hi Steve,
On 09/11/2018 12:50, Steve Sistare wrote:
[...]
> @@ -482,6 +484,10 @@ static void update_top_cache_domain(int cpu)
> dirty_sched_domain_sysctl(cpu);
> destroy_sched_domains(tmp);
>
> + sd = highest_flag_domain(cpu, SD_SHARE_PKG_RESOURCES);
> + cfs_overload_cpus =
Hi Steve,
On 09/11/2018 12:50, Steve Sistare wrote:
[...]
> @@ -482,6 +484,10 @@ static void update_top_cache_domain(int cpu)
> dirty_sched_domain_sysctl(cpu);
> destroy_sched_domains(tmp);
>
> + sd = highest_flag_domain(cpu, SD_SHARE_PKG_RESOURCES);
> + cfs_overload_cpus =
From: Steve Sistare
Define and initialize a sparse bitmap of overloaded CPUs, per
last-level-cache scheduling domain, for use by the CFS scheduling class.
Save a pointer to cfs_overload_cpus in the rq for efficient access.
Signed-off-by: Steve Sistare
---
include/linux/sched/topology.h | 1 +
From: Steve Sistare
Define and initialize a sparse bitmap of overloaded CPUs, per
last-level-cache scheduling domain, for use by the CFS scheduling class.
Save a pointer to cfs_overload_cpus in the rq for efficient access.
Signed-off-by: Steve Sistare
---
include/linux/sched/topology.h | 1 +
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