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From: Waiman Long <longman@redhat.com>
To: Ingo Molnar <mingo@redhat.com>,
	Peter Zijlstra <peterz@infradead.org>,
	Juri Lelli <juri.lelli@redhat.com>,
	Vincent Guittot <vincent.guittot@linaro.org>,
	Dietmar Eggemann <dietmar.eggemann@arm.com>,
	Steven Rostedt <rostedt@goodmis.org>,
	Ben Segall <bsegall@google.com>, Mel Gorman <mgorman@suse.de>,
	Valentin Schneider <vschneid@redhat.com>,
	Frederic Weisbecker <frederic@kernel.org>
Cc: linux-kernel@vger.kernel.org, Waiman Long <longman@redhat.com>
Subject: [PATCH 1/3] sched/isolation: Add HK_FLAG_SCHED to nohz_full
Date: Sun, 18 Aug 2024 19:45:18 -0400	[thread overview]
Message-ID: <20240818234520.90186-2-longman@redhat.com> (raw)
In-Reply-To: <20240818234520.90186-1-longman@redhat.com>

The HK_FLAG_SCHED/HK_TYPE_SCHED flag is defined and is also used
in kernel/sched/fair.c since commit de201559df87 ("sched/isolation:
Introduce housekeeping flags"). However, the corresponding cpumask isn't
currently updated anywhere. So the mask is always cpu_possible_mask.

Add it in nohz_full setup so that nohz_full CPUs will now be removed
from HK_TYPE_SCHED cpumask.

Signed-off-by: Waiman Long <longman@redhat.com>
---
 kernel/sched/isolation.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/sched/isolation.c b/kernel/sched/isolation.c
index 5891e715f00d..a514994af319 100644
--- a/kernel/sched/isolation.c
+++ b/kernel/sched/isolation.c
@@ -196,7 +196,7 @@ static int __init housekeeping_nohz_full_setup(char *str)
 	unsigned long flags;
 
 	flags = HK_FLAG_TICK | HK_FLAG_WQ | HK_FLAG_TIMER | HK_FLAG_RCU |
-		HK_FLAG_MISC | HK_FLAG_KTHREAD;
+		HK_FLAG_MISC | HK_FLAG_KTHREAD | HK_FLAG_SCHED;
 
 	return housekeeping_setup(str, flags);
 }
-- 
2.43.5


  reply	other threads:[~2024-08-18 23:45 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-08-18 23:45 [PATCH 0/3] sched: Miscellaneous isolation related cleanups Waiman Long
2024-08-18 23:45 ` Waiman Long [this message]
2024-09-03 13:10   ` [PATCH 1/3] sched/isolation: Add HK_FLAG_SCHED to nohz_full Frederic Weisbecker
2024-09-03 13:24     ` Waiman Long
2024-09-03 21:32       ` Frederic Weisbecker
2024-09-04  1:23         ` Waiman Long
2024-09-04 12:44           ` Frederic Weisbecker
2024-09-04 13:04             ` Peter Zijlstra
2024-09-04 13:41               ` Waiman Long
2024-09-04 13:44               ` Phil Auld
2024-09-04 14:02                 ` Peter Zijlstra
2024-09-04 14:32                   ` Phil Auld
2024-09-04 14:09                 ` Waiman Long
2024-09-06 12:36               ` Frederic Weisbecker
2024-08-18 23:45 ` [PATCH 2/3] sched/fair: Use HK_TYPE_SCHED housekeeping CPUs Waiman Long
2024-09-03 13:12   ` Frederic Weisbecker
2024-09-03 13:53     ` Waiman Long
2024-09-04 14:54       ` Waiman Long
2024-09-06 12:53         ` Frederic Weisbecker
2024-09-06 16:31           ` Waiman Long
2024-08-18 23:45 ` [PATCH 3/3] sched/isolation: Consolidate housekeeping cpumasks that are always identical Waiman Long
2024-08-23 18:23 ` [PATCH 0/3] sched: Miscellaneous isolation related cleanups Waiman Long

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