diff options
| author | Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com> | 2022-08-18 18:40:39 +0530 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2022-09-26 19:46:12 -0700 |
| commit | b26ac6f3ba38fac83db2d72551e6d994d0e0516f (patch) | |
| tree | 1e81601494a8abbb7eee9c28068b726a96743273 /mm/memory-tiers.c | |
| parent | 7766cf7a7e7545ab434a16c6f9531b09efe14dc1 (diff) | |
| download | lwn-b26ac6f3ba38fac83db2d72551e6d994d0e0516f.tar.gz lwn-b26ac6f3ba38fac83db2d72551e6d994d0e0516f.zip | |
mm/demotion: drop memtier from memtype
Now that we track node-specific memtier in pg_data_t, we can drop memtier
from memtype.
Link: https://lkml.kernel.org/r/20220818131042.113280-8-aneesh.kumar@linux.ibm.com
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Reviewed-by: "Huang, Ying" <ying.huang@intel.com>
Acked-by: Wei Xu <weixugc@google.com>
Cc: Alistair Popple <apopple@nvidia.com>
Cc: Bharata B Rao <bharata@amd.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Davidlohr Bueso <dave@stgolabs.net>
Cc: Hesham Almatary <hesham.almatary@huawei.com>
Cc: Jagdish Gediya <jvgediya.oss@gmail.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Tim Chen <tim.c.chen@intel.com>
Cc: Yang Shi <shy828301@gmail.com>
Cc: SeongJae Park <sj@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'mm/memory-tiers.c')
| -rw-r--r-- | mm/memory-tiers.c | 16 |
1 files changed, 9 insertions, 7 deletions
diff --git a/mm/memory-tiers.c b/mm/memory-tiers.c index 91fc0c324a1f..0e2bd32375d6 100644 --- a/mm/memory-tiers.c +++ b/mm/memory-tiers.c @@ -105,17 +105,22 @@ static struct memory_tier *find_create_memory_tier(struct memory_dev_type *memty lockdep_assert_held_once(&memory_tier_lock); + adistance = round_down(adistance, memtier_adistance_chunk_size); /* * If the memtype is already part of a memory tier, * just return that. */ - if (memtype->memtier) - return memtype->memtier; + if (!list_empty(&memtype->tier_sibiling)) { + list_for_each_entry(memtier, &memory_tiers, list) { + if (adistance == memtier->adistance_start) + return memtier; + } + WARN_ON(1); + return ERR_PTR(-EINVAL); + } - adistance = round_down(adistance, memtier_adistance_chunk_size); list_for_each_entry(memtier, &memory_tiers, list) { if (adistance == memtier->adistance_start) { - memtype->memtier = memtier; list_add(&memtype->tier_sibiling, &memtier->memory_types); return memtier; } else if (adistance < memtier->adistance_start) { @@ -135,7 +140,6 @@ static struct memory_tier *find_create_memory_tier(struct memory_dev_type *memty list_add_tail(&new_memtier->list, &memtier->list); else list_add_tail(&new_memtier->list, &memory_tiers); - memtype->memtier = new_memtier; list_add(&memtype->tier_sibiling, &new_memtier->memory_types); return new_memtier; } @@ -372,7 +376,6 @@ static bool clear_node_memory_tier(int node) node_clear(node, memtype->nodes); if (nodes_empty(memtype->nodes)) { list_del_init(&memtype->tier_sibiling); - memtype->memtier = NULL; if (list_empty(&memtier->memory_types)) destroy_memory_tier(memtier); } @@ -400,7 +403,6 @@ struct memory_dev_type *alloc_memory_type(int adistance) memtype->adistance = adistance; INIT_LIST_HEAD(&memtype->tier_sibiling); memtype->nodes = NODE_MASK_NONE; - memtype->memtier = NULL; kref_init(&memtype->kref); return memtype; } |