From: Peter Zijlstra <peterz@infradead.org>
To: mingo@kernel.org, mgorman@suse.de, juri.lelli@redhat.com,
vincent.guittot@linaro.org, dietmar.eggemann@arm.com,
rostedt@goodmis.org, bsegall@google.com, bristot@redhat.com,
joshdon@google.com, valentin.schneider@arm.com
Cc: linux-kernel@vger.kernel.org, peterz@infradead.org, greg@kroah.com
Subject: [PATCH 1/9] sched/numa: Allow runtime enabling/disabling of NUMA balance without SCHED_DEBUG
Date: Fri, 26 Mar 2021 11:33:53 +0100 [thread overview]
Message-ID: <20210326103934.780486173@infradead.org> (raw)
In-Reply-To: 20210326103352.603456266@infradead.org
From: Mel Gorman <mgorman@suse.de>
The ability to enable/disable NUMA balancing is not a debugging feature
and should not depend on CONFIG_SCHED_DEBUG. For example, machines within
a HPC cluster may disable NUMA balancing temporarily for some jobs and
re-enable it for other jobs without needing to reboot.
This patch removes the dependency on CONFIG_SCHED_DEBUG for
kernel.numa_balancing sysctl. The other numa balancing related sysctls
are left as-is because if they need to be tuned then it is more likely
that NUMA balancing needs to be fixed instead.
Signed-off-by: Mel Gorman <mgorman@suse.de>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20210324133916.GQ15768@suse.de
---
kernel/sysctl.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -1753,6 +1753,9 @@ static struct ctl_table kern_table[] = {
.proc_handler = proc_dointvec_minmax,
.extra1 = SYSCTL_ONE,
},
+#endif /* CONFIG_NUMA_BALANCING */
+#endif /* CONFIG_SCHED_DEBUG */
+#ifdef CONFIG_NUMA_BALANCING
{
.procname = "numa_balancing",
.data = NULL, /* filled in by handler */
@@ -1763,7 +1766,6 @@ static struct ctl_table kern_table[] = {
.extra2 = SYSCTL_ONE,
},
#endif /* CONFIG_NUMA_BALANCING */
-#endif /* CONFIG_SCHED_DEBUG */
{
.procname = "sched_rt_period_us",
.data = &sysctl_sched_rt_period,
next prev parent reply other threads:[~2021-03-26 10:44 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-26 10:33 [PATCH 0/9] sched: Clean up SCHED_DEBUG Peter Zijlstra
2021-03-26 10:33 ` Peter Zijlstra [this message]
2021-03-26 10:33 ` [PATCH 2/9] sched: Remove sched_schedstats sysctl out from under SCHED_DEBUG Peter Zijlstra
2021-03-26 10:33 ` [PATCH 3/9] sched: Dont make LATENCYTOP select SCHED_DEBUG Peter Zijlstra
2021-03-26 10:33 ` [PATCH 4/9] sched: Move SCHED_DEBUG to debugfs Peter Zijlstra
2021-03-26 11:06 ` Greg KH
2021-04-07 10:46 ` Valentin Schneider
2021-04-07 12:26 ` Peter Zijlstra
2021-04-07 12:57 ` Valentin Schneider
2021-03-26 10:33 ` [PATCH 5/9] sched,preempt: Move preempt_dynamic to debug.c Peter Zijlstra
2021-03-26 10:33 ` [PATCH 6/9] debugfs: Implement debugfs_create_str() Peter Zijlstra
2021-03-26 11:05 ` Greg KH
2021-03-26 11:18 ` Peter Zijlstra
2021-03-26 11:30 ` Greg KH
2021-03-26 11:38 ` [PATCH v2 " Peter Zijlstra
2021-03-26 12:18 ` Greg KH
2021-03-26 12:53 ` Rasmus Villemoes
2021-03-26 12:57 ` Greg KH
2021-03-26 13:10 ` Rasmus Villemoes
2021-03-26 14:12 ` Peter Zijlstra
2021-03-26 14:19 ` Greg KH
2021-03-26 14:22 ` Peter Zijlstra
2021-03-26 14:58 ` Rasmus Villemoes
2021-03-26 15:19 ` Peter Zijlstra
2021-03-27 10:41 ` Greg KH
2021-03-26 14:50 ` [PATCH v3 " Peter Zijlstra
2021-03-27 10:42 ` Greg KH
2021-03-27 22:24 ` [PATCH " Al Viro
2021-03-28 0:33 ` Steven Rostedt
2021-03-26 10:33 ` [PATCH 7/9] sched,debug: Convert sysctl sched_domains to debugfs Peter Zijlstra
2021-03-26 13:11 ` Dietmar Eggemann
2021-04-07 10:46 ` Valentin Schneider
2021-04-07 12:18 ` Peter Zijlstra
2021-03-26 10:34 ` [PATCH 8/9] sched: Move /proc/sched_debug " Peter Zijlstra
2021-03-26 11:05 ` Greg KH
2021-03-26 10:34 ` [PATCH 9/9] sched,fair: Alternative sched_slice() Peter Zijlstra
2021-03-26 12:08 ` Dietmar Eggemann
2021-03-26 14:07 ` Peter Zijlstra
2021-03-26 15:37 ` Vincent Guittot
2021-03-26 18:30 ` Peter Zijlstra
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