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| author | Andi Kleen <ak@linux.intel.com> | 2014-01-23 15:53:13 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2014-01-23 16:36:51 -0800 |
| commit | 54a43d54988a3731d644fdeb7a1d6f46b4ac64c7 (patch) | |
| tree | 87dc618d08b23d042e3ea01b3acbc56a0358cbdb /kernel/sysctl.c | |
| parent | 5e270e254885893f8c82ab9b91caa648af3690df (diff) | |
| download | linux-54a43d54988a3731d644fdeb7a1d6f46b4ac64c7.tar.gz linux-54a43d54988a3731d644fdeb7a1d6f46b4ac64c7.tar.bz2 linux-54a43d54988a3731d644fdeb7a1d6f46b4ac64c7.zip | |
numa: add a sysctl for numa_balancing
Add a working sysctl to enable/disable automatic numa memory balancing
at runtime.
This allows us to track down performance problems with this feature and
is generally a good idea.
This was possible earlier through debugfs, but only with special
debugging options set. Also fix the boot message.
[akpm@linux-foundation.org: s/sched_numa_balancing/sysctl_numa_balancing/]
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Acked-by: Mel Gorman <mgorman@suse.de>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'kernel/sysctl.c')
| -rw-r--r-- | kernel/sysctl.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/kernel/sysctl.c b/kernel/sysctl.c index 332cefcdb04b..693eac39c202 100644 --- a/kernel/sysctl.c +++ b/kernel/sysctl.c @@ -389,6 +389,15 @@ static struct ctl_table kern_table[] = { .mode = 0644, .proc_handler = proc_dointvec, }, + { + .procname = "numa_balancing", + .data = NULL, /* filled in by handler */ + .maxlen = sizeof(unsigned int), + .mode = 0644, + .proc_handler = sysctl_numa_balancing, + .extra1 = &zero, + .extra2 = &one, + }, #endif /* CONFIG_NUMA_BALANCING */ #endif /* CONFIG_SCHED_DEBUG */ { |