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McKenney" Cc: LKML , Frederic Weisbecker , rcu , Uladzislau Rezki , Neeraj Upadhyay , Boqun Feng , Joel Fernandes Subject: [PATCH 0/4 v2] rcu/nocb: Shrinker related boring fixes Date: Wed, 29 Mar 2023 18:01:59 +0200 Message-Id: <20230329160203.191380-1-frederic@kernel.org> X-Mailer: git-send-email 2.34.1 MIME-Version: 1.0 X-Spam-Status: No, score=-2.5 required=5.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_MED,SPF_HELO_NONE, SPF_PASS autolearn=unavailable autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1761719029814149367?= X-GMAIL-MSGID: =?utf-8?q?1761719029814149367?= Changes since v1 (https://lore.kernel.org/lkml/20230322194456.2331527-1-frederic@kernel.org/): * Use mutex_trylock() to avoid inverted dependency chain against allocations. * WARN if an rdp is part of nocb mask but is not offloaded Tested through shrinker debugfs interface. Frederic Weisbecker (4): rcu/nocb: Protect lazy shrinker against concurrent (de-)offloading rcu/nocb: Fix shrinker race against callback enqueuer rcu/nocb: Recheck lazy callbacks under the ->nocb_lock from shrinker rcu/nocb: Make shrinker to iterate only NOCB CPUs kernel/rcu/tree_nocb.h | 52 ++++++++++++++++++++++++++++++++++++++---- 1 file changed, 47 insertions(+), 5 deletions(-)