From: Marcelo Tosatti <mtosatti@redhat.com>
To: linux-kernel@vger.kernel.org
Cc: Frederic Weisbecker <fweisbec@gmail.com>,
Chris Friesen <chris.friesen@windriver.com>,
Thomas Gleixner <tglx@linutronix.de>,
Peter Zijlstra <peterz@infradead.org>,
Andrew Morton <akpm@linux-foundation.org>,
Jim Somerville <Jim.Somerville@windriver.com>,
Christoph Lameter <cl@linux.com>,
Frederic Weisbecker <frederic@kernel.org>,
Marcelo Tosatti <mtosatti@redhat.com>
Subject: [patch 1/4] kthread: switch to cpu_possible_mask
Date: Wed, 01 Apr 2020 09:10:19 -0300 [thread overview]
Message-ID: <20200401121342.883941670@redhat.com> (raw)
In-Reply-To: <20200401121018.104226700@redhat.com>
Next patch will switch unbound kernel threads mask to
housekeeping_cpumask(), a subset of cpu_possible_mask.
Switch from cpu_all_mask to cpu_possible_mask separately,
to ease bisection.
Suggested-by: Frederic Weisbecker <frederic@kernel.org>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
---
kernel/kthread.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
Index: linux-2.6/kernel/kthread.c
===================================================================
--- linux-2.6.orig/kernel/kthread.c
+++ linux-2.6/kernel/kthread.c
@@ -347,7 +347,7 @@ struct task_struct *__kthread_create_on_
* The kernel thread should not inherit these properties.
*/
sched_setscheduler_nocheck(task, SCHED_NORMAL, ¶m);
- set_cpus_allowed_ptr(task, cpu_all_mask);
+ set_cpus_allowed_ptr(task, cpu_possible_mask);
}
kfree(create);
return task;
@@ -572,7 +572,7 @@ int kthreadd(void *unused)
/* Setup a clean context for our children to inherit. */
set_task_comm(tsk, "kthreadd");
ignore_signals(tsk);
- set_cpus_allowed_ptr(tsk, cpu_all_mask);
+ set_cpus_allowed_ptr(tsk, cpu_possible_mask);
set_mems_allowed(node_states[N_MEMORY]);
current->flags |= PF_NOFREEZE;
next prev parent reply other threads:[~2020-04-01 12:15 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-01 12:10 [patch 0/4] affine kernel threads to nohz_full= cpumask (v4) Marcelo Tosatti
2020-04-01 12:10 ` Marcelo Tosatti [this message]
2020-04-01 12:10 ` [patch 2/4] isolation: set HK_FLAG_SCHED on nohz_full CPUs Marcelo Tosatti
2020-04-01 12:10 ` [patch 3/4] isolcpus: affine kernel threads to housekeeping cpus Marcelo Tosatti
2020-04-01 22:32 ` Randy Dunlap
2020-04-03 10:37 ` [patch 3/4 v2] " Marcelo Tosatti
2020-04-01 12:10 ` [patch 4/4] isolcpus: undeprecate on documentation Marcelo Tosatti
2020-04-20 16:02 ` [patch 0/4] affine kernel threads to nohz_full= cpumask (v4) Frederic Weisbecker
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20200401121342.883941670@redhat.com \
--to=mtosatti@redhat.com \
--cc=Jim.Somerville@windriver.com \
--cc=akpm@linux-foundation.org \
--cc=chris.friesen@windriver.com \
--cc=cl@linux.com \
--cc=frederic@kernel.org \
--cc=fweisbec@gmail.com \
--cc=linux-kernel@vger.kernel.org \
--cc=peterz@infradead.org \
--cc=tglx@linutronix.de \
--subject='Re: [patch 1/4] kthread: switch to cpu_possible_mask' \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).