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authorMel Gorman <mgorman@suse.de>2021-03-24 16:39:16 +0300
committerPeter Zijlstra <peterz@infradead.org>2021-04-16 18:06:33 +0300
commitb7cc6ec744b307db59568c654a8904a5928aa855 (patch)
treee9814602bc029fe1d42fef009c2e59fb19bf9531 /kernel/sysctl.c
parentb5c4477366fb5e6a2f0f38742c33acd666c07698 (diff)
downloadlinux-b7cc6ec744b307db59568c654a8904a5928aa855.tar.xz
sched/numa: Allow runtime enabling/disabling of NUMA balance without SCHED_DEBUG
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> Tested-by: Valentin Schneider <valentin.schneider@arm.com> Link: https://lkml.kernel.org/r/20210324133916.GQ15768@suse.de
Diffstat (limited to 'kernel/sysctl.c')
-rw-r--r--kernel/sysctl.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index 62fbd09b5dc1..8042098ae080 100644
--- 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,