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| author | Mel Gorman <mgorman@suse.de> | 2021-03-24 13:39:16 +0000 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2021-04-16 17:06:33 +0200 |
| commit | b7cc6ec744b307db59568c654a8904a5928aa855 (patch) | |
| tree | e9814602bc029fe1d42fef009c2e59fb19bf9531 /kernel/sysctl.c | |
| parent | b5c4477366fb5e6a2f0f38742c33acd666c07698 (diff) | |
| download | lwn-b7cc6ec744b307db59568c654a8904a5928aa855.tar.gz lwn-b7cc6ec744b307db59568c654a8904a5928aa855.zip | |
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.c | 4 |
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, |