Re: Advice needed on SMP regression after cpu_core_mask change

2021-03-21 Thread David Gibson
On Wed, Mar 17, 2021 at 01:05:21PM -0300, Daniel Henrique Barboza wrote: > > > On 3/17/21 12:30 PM, Cédric Le Goater wrote: > > On 3/17/21 2:00 PM, Daniel Henrique Barboza wrote: > > > Hello, > > > > > > Patch 4bce545903fa ("powerpc/topology: Update topology_core_cpumask") > > > introduced > >

Re: Advice needed on SMP regression after cpu_core_mask change

2021-03-18 Thread Daniel Henrique Barboza
On 3/18/21 10:42 AM, Srikar Dronamraju wrote: * Daniel Henrique Barboza [2021-03-17 10:00:34]: Hello, Patch 4bce545903fa ("powerpc/topology: Update topology_core_cpumask") introduced a regression in both upstream and RHEL downstream kernels [1]. The assumption made in the commit: "Furthe

Re: Advice needed on SMP regression after cpu_core_mask change

2021-03-18 Thread Srikar Dronamraju
* Daniel Henrique Barboza [2021-03-17 10:00:34]: > Hello, > > Patch 4bce545903fa ("powerpc/topology: Update topology_core_cpumask") > introduced > a regression in both upstream and RHEL downstream kernels [1]. The assumption > made > in the commit: > > "Further analysis shows that cpu_core_ma

Re: Advice needed on SMP regression after cpu_core_mask change

2021-03-17 Thread Daniel Henrique Barboza
On 3/17/21 12:30 PM, Cédric Le Goater wrote: On 3/17/21 2:00 PM, Daniel Henrique Barboza wrote: Hello, Patch 4bce545903fa ("powerpc/topology: Update topology_core_cpumask") introduced a regression in both upstream and RHEL downstream kernels [1]. The assumption made in the commit: "Further

Re: Advice needed on SMP regression after cpu_core_mask change

2021-03-17 Thread Cédric Le Goater
On 3/17/21 2:00 PM, Daniel Henrique Barboza wrote: > Hello, > > Patch 4bce545903fa ("powerpc/topology: Update topology_core_cpumask") > introduced > a regression in both upstream and RHEL downstream kernels [1]. The assumption > made > in the commit: > > "Further analysis shows that cpu_core_ma

Advice needed on SMP regression after cpu_core_mask change

2021-03-17 Thread Daniel Henrique Barboza
Hello, Patch 4bce545903fa ("powerpc/topology: Update topology_core_cpumask") introduced a regression in both upstream and RHEL downstream kernels [1]. The assumption made in the commit: "Further analysis shows that cpu_core_mask and cpu_cpu_mask for any CPU would be equal on Power" Doesn't see