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Mon, 16 Jun 2025 13:52:13 +0000 (UTC) Received: from dovecot-director2.suse.de ([2a07:de40:b281:106:10:150:64:167]) by imap1.dmz-prg2.suse.org with ESMTPSA id QEUWHo0hUGhHLwAAD6G6ig (envelope-from ); Mon, 16 Jun 2025 13:52:13 +0000 From: Oscar Salvador To: Andrew Morton Cc: David Hildenbrand , Vlastimil Babka , Jonathan Cameron , Harry Yoo , Rakie Kim , Hyeonggon Yoo <42.hyeyoo@gmail.com>, linux-mm@kvack.org, linux-kernel@vger.kernel.org, Oscar Salvador Subject: [PATCH v7 05/11] mm,memory-tiers: Use node-notifier instead of memory-notifier Date: Mon, 16 Jun 2025 15:51:48 +0200 Message-ID: <20250616135158.450136-6-osalvador@suse.de> X-Mailer: git-send-email 2.49.0 In-Reply-To: <20250616135158.450136-1-osalvador@suse.de> References: <20250616135158.450136-1-osalvador@suse.de> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Spamd-Result: default: False [-1.30 / 50.00]; BAYES_HAM(-3.00)[100.00%]; SUSPICIOUS_RECIPS(1.50)[]; MID_CONTAINS_FROM(1.00)[]; NEURAL_HAM_LONG(-1.00)[-1.000]; R_MISSING_CHARSET(0.50)[]; NEURAL_HAM_SHORT(-0.20)[-1.000]; MIME_GOOD(-0.10)[text/plain]; TAGGED_RCPT(0.00)[]; RSPAMD_URIBL_FAIL(0.00)[suse.cz:query timed out,oracle.com:query timed out]; RCVD_VIA_SMTP_AUTH(0.00)[]; MIME_TRACE(0.00)[0:+]; ARC_NA(0.00)[]; TO_DN_SOME(0.00)[]; RCVD_TLS_ALL(0.00)[]; RCPT_COUNT_SEVEN(0.00)[10]; DKIM_SIGNED(0.00)[suse.de:s=susede2_rsa,suse.de:s=susede2_ed25519]; FROM_EQ_ENVFROM(0.00)[]; FROM_HAS_DN(0.00)[]; FREEMAIL_CC(0.00)[redhat.com,suse.cz,huawei.com,oracle.com,sk.com,gmail.com,kvack.org,vger.kernel.org,suse.de]; R_RATELIMIT(0.00)[to_ip_from(RLsc83pr41xu6y1i6mw9yajrf5)]; DBL_BLOCKED_OPENRESOLVER(0.00)[huawei.com:email,oracle.com:email,imap1.dmz-prg2.suse.org:helo,suse.de:email,suse.de:mid,suse.cz:email]; RCVD_COUNT_TWO(0.00)[2]; TO_MATCH_ENVRCPT_ALL(0.00)[]; FUZZY_BLOCKED(0.00)[rspamd.com]; FREEMAIL_ENVRCPT(0.00)[gmail.com] X-Spam-Level: X-Spam-Flag: NO X-Spam-Score: -1.30 memory-tier is only concerned when a numa node changes its memory state, because it then needs to re-create the demotion list. So stop using the memory notifier and use the new numa node notifer instead. Signed-off-by: Oscar Salvador Reviewed-by: Jonathan Cameron Reviewed-by: Harry Yoo Reviewed-by: Vlastimil Babka Acked-by: David Hildenbrand --- mm/memory-tiers.c | 19 ++++++------------- 1 file changed, 6 insertions(+), 13 deletions(-) diff --git a/mm/memory-tiers.c b/mm/memory-tiers.c index fc14fe53e9b7..0382b6942b8b 100644 --- a/mm/memory-tiers.c +++ b/mm/memory-tiers.c @@ -872,25 +872,18 @@ static int __meminit memtier_hotplug_callback(struct notifier_block *self, unsigned long action, void *_arg) { struct memory_tier *memtier; - struct memory_notify *arg = _arg; - - /* - * Only update the node migration order when a node is - * changing status, like online->offline. - */ - if (arg->status_change_nid < 0) - return notifier_from_errno(0); + struct node_notify *nn = _arg; switch (action) { - case MEM_OFFLINE: + case NODE_REMOVED_LAST_MEMORY: mutex_lock(&memory_tier_lock); - if (clear_node_memory_tier(arg->status_change_nid)) + if (clear_node_memory_tier(nn->nid)) establish_demotion_targets(); mutex_unlock(&memory_tier_lock); break; - case MEM_ONLINE: + case NODE_ADDED_FIRST_MEMORY: mutex_lock(&memory_tier_lock); - memtier = set_node_memory_tier(arg->status_change_nid); + memtier = set_node_memory_tier(nn->nid); if (!IS_ERR(memtier)) establish_demotion_targets(); mutex_unlock(&memory_tier_lock); @@ -929,7 +922,7 @@ static int __init memory_tier_init(void) nodes_and(default_dram_nodes, node_states[N_MEMORY], node_states[N_CPU]); - hotplug_memory_notifier(memtier_hotplug_callback, MEMTIER_HOTPLUG_PRI); + hotplug_node_notifier(memtier_hotplug_callback, MEMTIER_HOTPLUG_PRI); return 0; } subsys_initcall(memory_tier_init); -- 2.49.0