ipvs: Fix estimator kthreads preferred affinity

[ Upstream commit c0a23bbc98e93704a1f4fb5e7e7bb2d7c0fb6eb3 ]

The estimator kthreads' affinity are defined by sysctl overwritten
preferences and applied through a plain call to the scheduler's affinity
API.

However since the introduction of managed kthreads preferred affinity,
such a practice shortcuts the kthreads core code which eventually
overwrites the target to the default unbound affinity.

Fix this with using the appropriate kthread's API.

Fixes: d1a89197589c ("kthread: Default affine kthread to its preferred NUMA node")
Signed-off-by: Frederic Weisbecker <frederic@kernel.org>
Acked-by: Julian Anastasov <ja@ssi.bg>
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>

1 files changed, 1 insertions, 0 deletions

diff --git a/kernel/kthread.c b/kernel/kthread.c
index 77c44924cf54..800c8fc46b08 100644
--- a/kernel/kthread.c
+++ b/kernel/kthread.c
@@ -894,6 +894,7 @@ out:
 
 	return ret;
 }
+EXPORT_SYMBOL_GPL(kthread_affine_preferred);
 
 /*
  * Re-affine kthreads according to their preferences