Re: [Patch v3 1/3] lib: Restrict cpumask_local_spread to houskeeping CPUs

2020-06-29 Thread Shaokun Zhang
Hi Andrew, 在 2020/6/25 3:26, Andrew Morton 写道: > On Tue, 23 Jun 2020 15:23:29 -0400 Nitesh Narayan Lal > wrote: > >> From: Alex Belits >> >> The current implementation of cpumask_local_spread() does not respect the >> isolated CPUs, i.e., even if a CPU has been isolated for Real-Time task, >>

Re: [Patch v3 1/3] lib: Restrict cpumask_local_spread to houskeeping CPUs

2020-06-24 Thread Nitesh Narayan Lal
On 6/24/20 3:26 PM, Andrew Morton wrote: > On Tue, 23 Jun 2020 15:23:29 -0400 Nitesh Narayan Lal > wrote: > >> From: Alex Belits >> >> The current implementation of cpumask_local_spread() does not respect the >> isolated CPUs, i.e., even if a CPU has been isolated for Real-Time task, >> it

Re: [Patch v3 1/3] lib: Restrict cpumask_local_spread to houskeeping CPUs

2020-06-24 Thread Nitesh Narayan Lal
On 6/24/20 3:26 PM, Andrew Morton wrote: > On Tue, 23 Jun 2020 15:23:29 -0400 Nitesh Narayan Lal > wrote: > >> From: Alex Belits >> >> The current implementation of cpumask_local_spread() does not respect the >> isolated CPUs, i.e., even if a CPU has been isolated for Real-Time task, >> it

Re: [Patch v3 1/3] lib: Restrict cpumask_local_spread to houskeeping CPUs

2020-06-24 Thread Nitesh Narayan Lal
On 6/24/20 8:13 AM, Frederic Weisbecker wrote: > On Tue, Jun 23, 2020 at 03:23:29PM -0400, Nitesh Narayan Lal wrote: >> From: Alex Belits >> >> The current implementation of cpumask_local_spread() does not respect the >> isolated CPUs, i.e., even if a CPU has been isolated for Real-Time task, >>

Re: [Patch v3 1/3] lib: Restrict cpumask_local_spread to houskeeping CPUs

2020-06-24 Thread Andrew Morton
On Tue, 23 Jun 2020 15:23:29 -0400 Nitesh Narayan Lal wrote: > From: Alex Belits > > The current implementation of cpumask_local_spread() does not respect the > isolated CPUs, i.e., even if a CPU has been isolated for Real-Time task, > it will return it to the caller for pinning of its IRQ

Re: [Patch v3 1/3] lib: Restrict cpumask_local_spread to houskeeping CPUs

2020-06-24 Thread Frederic Weisbecker
On Tue, Jun 23, 2020 at 03:23:29PM -0400, Nitesh Narayan Lal wrote: > From: Alex Belits > > The current implementation of cpumask_local_spread() does not respect the > isolated CPUs, i.e., even if a CPU has been isolated for Real-Time task, > it will return it to the caller for pinning of its

[Patch v3 1/3] lib: Restrict cpumask_local_spread to houskeeping CPUs

2020-06-23 Thread Nitesh Narayan Lal
From: Alex Belits The current implementation of cpumask_local_spread() does not respect the isolated CPUs, i.e., even if a CPU has been isolated for Real-Time task, it will return it to the caller for pinning of its IRQ threads. Having these unwanted IRQ threads on an isolated CPU adds up to a