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
next prev parent 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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