From: Thomas Gleixner <tglx@linutronix.de>
To: Marcelo Tosatti <mtosatti@redhat.com>,
Nitesh Narayan Lal <nitesh@redhat.com>
Cc: Robin Murphy <robin.murphy@arm.com>,
Nitesh Narayan Lal <nitesh@redhat.com>,
linux-kernel@vger.kernel.org, linux-api@vger.kernel.org,
frederic@kernel.org, juri.lelli@redhat.com, abelits@marvell.com,
bhelgaas@google.com, linux-pci@vger.kernel.org,
rostedt@goodmis.org, mingo@kernel.org, peterz@infradead.org,
davem@davemloft.net, akpm@linux-foundation.org,
sfr@canb.auug.org.au, stephen@networkplumber.org,
rppt@linux.vnet.ibm.com, jinyuqi@huawei.com,
zhangshaokun@hisilicon.com
Subject: Re: [Patch v4 1/3] lib: Restrict cpumask_local_spread to houskeeping CPUs
Date: Thu, 28 Jan 2021 21:01:37 +0100 [thread overview]
Message-ID: <87h7n0de5a.fsf@nanos.tec.linutronix.de> (raw)
In-Reply-To: <20210128165903.GB38339@fuller.cnet>
On Thu, Jan 28 2021 at 13:59, Marcelo Tosatti wrote:
>> The whole pile wants to be reverted. It's simply broken in several ways.
>
> I was asking for your comments on interaction with CPU hotplug :-)
Which I answered in an seperate mail :)
> So housekeeping_cpumask has multiple meanings. In this case:
...
> So as long as the meaning of the flags are respected, seems
> alright.
Yes. Stuff like the managed interrupts preference for housekeeping CPUs
when a affinity mask spawns housekeeping and isolated is perfectly
fine. It's well thought out and has no limitations.
> Nitesh, is there anything preventing this from being fixed
> in userspace ? (as Thomas suggested previously).
Everything with is not managed can be steered by user space.
Thanks,
tglx
next prev parent reply other threads:[~2021-01-28 20:06 UTC|newest]
Thread overview: 52+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-06-25 22:34 [PATCH v4 0/3] Preventing job distribution to isolated CPUs Nitesh Narayan Lal
2020-06-25 22:34 ` [Patch v4 1/3] lib: Restrict cpumask_local_spread to houskeeping CPUs Nitesh Narayan Lal
2020-06-29 16:11 ` Nitesh Narayan Lal
2020-07-01 0:32 ` Andrew Morton
2020-07-01 0:47 ` Nitesh Narayan Lal
2020-07-09 8:45 ` [tip: sched/core] " tip-bot2 for Alex Belits
2021-01-27 11:57 ` [Patch v4 1/3] " Robin Murphy
2021-01-27 12:19 ` Marcelo Tosatti
2021-01-27 12:36 ` Robin Murphy
2021-01-27 13:09 ` Marcelo Tosatti
2021-01-27 13:49 ` Robin Murphy
2021-01-27 14:16 ` Nitesh Narayan Lal
2021-01-28 15:56 ` Thomas Gleixner
2021-01-28 16:33 ` Marcelo Tosatti
[not found] ` <02ac9d85-7ddd-96da-1252-4663feea7c9f@marvell.com>
2021-02-01 17:50 ` [EXT] " Marcelo Tosatti
2021-01-28 16:02 ` Thomas Gleixner
2021-01-28 16:59 ` Marcelo Tosatti
2021-01-28 17:35 ` Nitesh Narayan Lal
2021-01-28 20:01 ` Thomas Gleixner [this message]
[not found] ` <d2a4dc97-a9ed-e0e7-3b9c-c56ae46f6608@redhat.com>
[not found] ` <20210129142356.GB40876@fuller.cnet>
2021-01-29 17:34 ` [EXT] " Alex Belits
[not found] ` <18584612-868c-0f88-5de2-dc93c8638816@redhat.com>
2021-02-05 19:56 ` Thomas Gleixner
2021-02-04 18:15 ` Marcelo Tosatti
2021-02-04 18:47 ` Nitesh Narayan Lal
2021-02-04 19:06 ` Marcelo Tosatti
2021-02-04 19:17 ` Nitesh Narayan Lal
2021-02-05 22:23 ` Thomas Gleixner
2021-02-05 22:26 ` Thomas Gleixner
2021-02-05 23:02 ` [tip: sched/urgent] Revert "lib: Restrict cpumask_local_spread to houskeeping CPUs" tip-bot2 for Thomas Gleixner
2021-02-07 0:43 ` [Patch v4 1/3] lib: Restrict cpumask_local_spread to houskeeping CPUs Nitesh Narayan Lal
2021-02-11 15:55 ` Nitesh Narayan Lal
2021-03-04 18:15 ` Nitesh Narayan Lal
[not found] ` <faa8d84e-db67-7fbe-891e-f4987f106b20@marvell.com>
2021-03-04 23:23 ` [EXT] " Nitesh Narayan Lal
2021-04-06 17:22 ` Jesse Brandeburg
2021-04-07 15:18 ` Nitesh Narayan Lal
2021-04-08 18:49 ` Nitesh Narayan Lal
2021-04-14 16:11 ` Jesse Brandeburg
2021-04-15 22:11 ` Nitesh Narayan Lal
2021-04-29 21:44 ` Nitesh Lal
2021-04-30 1:48 ` Jesse Brandeburg
2021-04-30 13:10 ` Nitesh Lal
2021-04-30 7:10 ` Thomas Gleixner
2021-04-30 16:14 ` Nitesh Lal
2021-04-30 18:21 ` Thomas Gleixner
2021-04-30 21:07 ` Nitesh Lal
2021-05-01 2:21 ` Jesse Brandeburg
2021-05-03 13:15 ` Nitesh Lal
2020-06-25 22:34 ` [Patch v4 2/3] PCI: Restrict probe functions to housekeeping CPUs Nitesh Narayan Lal
2020-07-09 8:45 ` [tip: sched/core] " tip-bot2 for Alex Belits
2020-06-25 22:34 ` [Patch v4 3/3] net: Restrict receive packets queuing " Nitesh Narayan Lal
2020-06-26 11:14 ` Peter Zijlstra
2020-06-26 17:20 ` David Miller
2020-07-09 8:45 ` [tip: sched/core] " tip-bot2 for Alex Belits
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