Document the rcutree.rcu_min_cached_objs sysfs kernel parameter.

Signed-off-by: Uladzislau Rezki (Sony) <[email protected]>
---
 Documentation/admin-guide/kernel-parameters.txt | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/Documentation/admin-guide/kernel-parameters.txt 
b/Documentation/admin-guide/kernel-parameters.txt
index 828ff975fbc6..b2b7022374af 100644
--- a/Documentation/admin-guide/kernel-parameters.txt
+++ b/Documentation/admin-guide/kernel-parameters.txt
@@ -3977,6 +3977,14 @@
                        latencies, which will choose a value aligned
                        with the appropriate hardware boundaries.
 
+       rcutree.rcu_min_cached_objs= [KNL]
+                       Minimum number of objects which are cached and
+                       maintained per one CPU. Object size is equal
+                       to PAGE_SIZE. The cache allows to reduce the
+                       pressure to page allocator, also it makes the
+                       whole algorithm to behave better in low memory
+                       condition.
+
        rcutree.jiffies_till_first_fqs= [KNL]
                        Set delay from grace-period initialization to
                        first attempt to force quiescent states.
-- 
2.20.1

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