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McKenney" Cc: Boqun Feng , Vlastimil Babka , Marco Elver , linux-kernel@vger.kernel.org, kasan-dev@googlegroups.com, linux-mm@kvack.org, sfr@canb.auug.org.au, longman@redhat.com, cl@linux.com, penberg@kernel.org, rientjes@google.com, iamjoonsoo.kim@lge.com, akpm@linux-foundation.org, Tomas Gleixner , Peter Zijlstra Subject: Re: [PATCH 2/2] scftorture: Use a lock-less list to free memory. Message-ID: <20241107144300.gbzCzBRf@linutronix.de> References: <88694240-1eea-4f4c-bb7b-80de25f252e7@paulmck-laptop> <20241104105053.2182833-1-bigeasy@linutronix.de> <20241104105053.2182833-2-bigeasy@linutronix.de> <20241107112107.3rO2RTzX@linutronix.de> <45725c86-d07f-4422-a6fd-c9f02744ac75@paulmck-laptop> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable In-Reply-To: <45725c86-d07f-4422-a6fd-c9f02744ac75@paulmck-laptop> X-Rspam-User: X-Rspamd-Server: rspam12 X-Rspamd-Queue-Id: EED904001F X-Stat-Signature: bcxjwa4xff9z8kubitdwr8ym3hhekx5i X-HE-Tag: 1730990533-658365 X-HE-Meta: U2FsdGVkX1+RgkWWssSEaaRaf+AUgDSuGkAKlPmn0vuDetGYkkb+yM7yngArVmzrRseHAOtJLYiKIssP/wc6q9Nd+Msvg+8YcswK518U8/RUzN1pkJztwPC5+Fu64O/ofIZHX/4C6cfqY7JJr78fcLf0nmVpsfC12OyplQHMUiCf6I4TSXo+BQpa5YwIrdt73o8QiKDcSuJlJBLubR1/8JA2p31W0Fhz4YAmoOJh5Z96PBmcVuo1MABhrNE5iq0iJj7iOuJtmXt5lyPM0CjJoyOKMBybreqnL4yGoTn4wQM6CzkRlca3P94WuZ0YC8do55BCjusWxiC7bDCC39sfaPOerI5GI4o11a9C47zY9IU+vTyIKHQ545ceaJ9WPnMqImy7lRW2w27pRStAOXd5tJMfPtKKIaAmTzuJt3qgzTs2eG1Br9/Neo1L3C5QacvBn2TXQK2mbe2cvMmdjChrMBGXvnpCEAP8P5q426HKRATH4QnichEu0q9Wiv97zL9AgzWBefttHen5IRf+T1muqSTvr4c548f39xjv4yBavFD1UqovbrtohUTMJZf/gZ+aiYc0s5yxTCjy6kahp+kgCnKz80j0WD6ix3jvVwplh3sPrJkRTQvW03OMa5Ma72yQSOVKvO/MiWAmQQ6jGO1h8+gII2/w1S/eVxv9CBr120Vx0GRoT4mRWRKqZpq6NJ6k23spMiTK4CSNbV+OBys8q1TxJBWH4S+iXjfxFjjmHgWM+5RUl6y6+o012SyrHZ5/iy22oUYbjXU+YI+rU+9v1mhdKl8wC2cdCOAisp3ANuyO705ZLvT6CreAsZ8QmD/kS/kK2NfOhw+bp/7ee4S+V2SN7c+55EZHedTPwu8EvehOmxKdebWpf6QONVA0nMweh6KD787RZm0Ywz8eWqCqbbJfCdmWWgSDhqkRZvdfdL1DECdqX84Fmc8l14ckUIYW6kIbzBZA6HD0W6JPIgn bv7oEipP /wYfYKws4r18lhSVL6cWONokEEOvaZSRDZW8b8tfuHmkGfRgTYR7f73Bxe89osZieDLmkW2rULtcRObr5WCSKuGaLbZGwfV1Gap0YxFoeiuppn+Hxik+cL1OzCoLB7uZ5SBodCKBtmDtiAOp2SNtM9O3rA6io6JPJbcLTIERS0flzYNdO8sMYRa+v8s+nQbfdQw9xFksfC/y2soGJPcKT/nq9HVizmdnT5IYWp44eObNBzz4= 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: List-Subscribe: List-Unsubscribe: On 2024-11-07 06:08:35 [-0800], Paul E. McKenney wrote: =E2=80=A6 > This statement in scf_torture_cleanup() is supposed to wait for all > outstanding IPIs: >=20 > smp_call_function(scf_cleanup_handler, NULL, 0); This should be smp_call_function(scf_cleanup_handler, NULL, 1); so it queues the function call and waits for its completion. Otherwise it is queued and might be invoked _later_. > And the scf_cleanup_handler() function is as follows: >=20 > static void scf_cleanup_handler(void *unused) > { > } >=20 > Does that work, or am I yet again being overly naive? See above. I can send a patch later on if you have no other complains ;) > Thanx, Paul Sebastian