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 1/3] kthread: switch to cpu_possible_mask
Date: Sat, 28 Mar 2020 12:21:18 -0300 [thread overview]
Message-ID: <20200328152503.187340671@redhat.com> (raw)
In-Reply-To: 20200328152117.881555226@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:[~2020-03-28 15:27 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-28 15:21 [patch 0/3] affine kernel threads to specified cpumask (v3) Marcelo Tosatti
2020-03-28 15:21 ` Marcelo Tosatti [this message]
2020-03-28 15:21 ` [patch 2/3] isolcpus: affine kernel threads to specified cpumask Marcelo Tosatti
2020-03-31 0:57 ` Frederic Weisbecker
2020-03-31 11:50 ` Marcelo Tosatti
2020-03-31 13:36 ` Frederic Weisbecker
2020-03-28 15:21 ` [patch 3/3] isolcpus: undeprecate on documentation Marcelo Tosatti
2020-03-31 15:22 ` Peter Zijlstra
2020-03-31 15:41 ` Marcelo Tosatti
2020-03-31 15:57 ` Peter Zijlstra
2020-04-04 23:05 ` Christopher Lameter
2020-03-31 15:43 ` Frederic Weisbecker
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