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[94.245.46.49]) by smtp.gmail.com with ESMTPSA id z21sm295483ljh.42.2020.04.28.13.59.39 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 28 Apr 2020 13:59:40 -0700 (PDT) From: "Uladzislau Rezki (Sony)" To: LKML , linux-mm@kvack.org Cc: Andrew Morton , "Paul E . McKenney" , "Theodore Y . Ts'o" , Matthew Wilcox , Joel Fernandes , RCU , Uladzislau Rezki , Oleksiy Avramchenko Subject: [PATCH 10/24] rcu/tree: add rcutree.rcu_min_cached_objs description Date: Tue, 28 Apr 2020 22:58:49 +0200 Message-Id: <20200428205903.61704-11-urezki@gmail.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200428205903.61704-1-urezki@gmail.com> References: <20200428205903.61704-1-urezki@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: Document the rcutree.rcu_min_cached_objs sysfs kernel parameter. Signed-off-by: Uladzislau Rezki (Sony) --- Documentation/admin-guide/kernel-parameters.txt | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentat= ion/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. =20 + rcutree.rcu_min_cached_objs=3D [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=3D [KNL] Set delay from grace-period initialization to first attempt to force quiescent states. --=20 2.20.1