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Howlett" , Vlastimil Babka , Mike Rapoport , Suren Baghdasaryan , Michal Hocko , open list , "open list:MEMORY MANAGEMENT - CORE" Cc: jyescas@google.com, android-mm@google.com, ljs@kernel.org, fvdl@google.com, tkjos@google.com, minchan@google.com, dskiba@google.com, open list , "open list:MEMORY MANAGEMENT - CORE" Content-Type: text/plain; charset="UTF-8" X-Rspamd-Server: rspam01 X-Rspamd-Queue-Id: 017782000F X-Stat-Signature: 6rmh4ka3mng8oryook5ou4h1e38zgwr1 X-Rspam-User: X-HE-Tag: 1785978726-648527 X-HE-Meta: U2FsdGVkX1+QqTrV5DjsC9/IER7G2EOwYFoD1A99AjkfUflFxMKsdIluhaxfGZeQhJFmpYyJCV5Xg8190imi9QQiLpVLXUTvePRGHCwrh4hqUBIRUdIsYAyVVyBcxvn0FJkKQ3BS+kTLwvnvNHy3Wh0Z7rE2nODaGRChvR3y1DKOoPg05W6yY6XrnNIhYi+b4eDjcecDwUXD7pSLvCvakamq6tlEerYVH3X3Skh/2+cMuHxs+Qm/1ThPZ/WfG1M6m9dBjQkOOdchr9Dgi0oIAQslGiVKa3aIQTYK9HQrdChRrbukqgnqncn/beO4THYbUdyQdLwpCahldQjntEbqkF+k3T4bV1yRDk7qWZItS97X6rNItzYddTLngbNM1Hw/M+aTEFbhitcyPV4OdrdiJhInh3UuOpsHGFP/b9Kq4e08lLW5X1uQmpd2GpawYznlSEGZf0uNTJcy+lTLGj/KQWUtaQzpSxJnImLQMJHETFD40EERF41wOgCRxfmfoi9V0oznRB4A4/YZ1MW0LwlS6+KQ7EARmUhl4XnNY3j2+dJLKxjUgddQE8EQdZu5b7m9nyj1a5ud7AyakWxKbI4AHWI0Lnl2Z10YGS8pQsOsjbN8ieIzRUX7AZxIpFQhfPmbMGAzv7yJ96yTabKLMEJuOoZPsWugajGKui3jtI5IeGPCRQBI2Yj1r5/zyzZ7PfvPRCwrcH3hPDh+LavTc4LB7BK6HIzKAV16DHBhSbBiO8dC+99R8iAManate00JyrOmZ+2kWo1BSKodTyzgQVhQxP7caPpB/mo+nhK3xSBB9tlCK4iHT7f7CLPCqJOMLtrWssYeUOWHILLqkWqaHGze4DDnt4/r3mBunBoeEphUlhJCmRvOoadIgZYghxf3DXkZSBc2VuxlUahitwPH0e8h76eIm2rGQ8aQGjqL15ggdSvpiUgSQPzhOvuhgyCz5ArRYrSFRRhWOvUTYUdyQad /yY6UxeG 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 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: This change creates a directory for each populated zone in the node. Note: ZONE_DEVICE pages won't be exposed in this driver due they are not managed by the Buddy Allocator. Signed-off-by: Juan Yescas --- Changes in v2: - Update comments. - Remove unused variables. mm/page_alloc_hogger.c | 46 ++++++++++++++++++++++++++++++++++++++++-- 1 file changed, 44 insertions(+), 2 deletions(-) diff --git a/mm/page_alloc_hogger.c b/mm/page_alloc_hogger.c index 5765ecc43567..e8944080e82e 100644 --- a/mm/page_alloc_hogger.c +++ b/mm/page_alloc_hogger.c @@ -88,6 +88,7 @@ #include #include #include +#include #include #include #include @@ -126,21 +127,62 @@ struct page_alloc { static struct kmem_cache *req_alloc_cache; static struct kmem_cache *page_alloc_cache; + +/** + * create_zones_subdirs() - Creates a directory for each populated zone in the + * node. + * + * Note: ZONE_DEVICE pages won't be allocated using this driver. The main reason + * is because they are not managed by the Buddy Allocator or CMA allocator. + */ +static inline int create_zones_subdirs(struct dentry *nodedir, + struct pglist_data *pgdata) +{ + struct dentry *zonedir; + struct zone *zone; + struct zone *node_zones = pgdata->node_zones; + char dirname[24]; + + for (zone = node_zones; zone - node_zones < MAX_NR_ZONES; ++zone) { + if (!populated_zone(zone)) + continue; + + /* ZONE_DEVICE pages won't be allocated using this driver. */ + if (zone_is_zone_device(zone)) + continue; + + snprintf(dirname, sizeof(dirname), "zone-%s", zone->name); + zonedir = debugfs_create_dir(dirname, nodedir); + if (IS_ERR(zonedir)) + return PTR_ERR(zonedir); + } + + return 0; +} + /** * create_nodes_subdirs() - Creates a directory for each node that contains - * memory. + * memory. Once that the node directory is created, it creates a directory for + * each zone in the node. */ static inline int create_nodes_subdirs(struct dentry *mmdir) { struct dentry *nodedir; - int nid; char dirname[12]; + int nid; + int ret; for_each_node_state(nid, N_MEMORY) { + struct pglist_data *pgdata = NODE_DATA(nid); + snprintf(dirname, sizeof(dirname), "node-%d", nid); nodedir = debugfs_create_dir(dirname, mmdir); if (IS_ERR(nodedir)) return PTR_ERR(nodedir); + + ret = create_zones_subdirs(nodedir, pgdata); + if (ret) + return ret; } return 0; -- 2.55.0.629.g250fe7f194-goog