diff options
| author | Kefeng Wang <wangkefeng.wang@huawei.com> | 2023-09-21 15:44:17 +0800 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2023-10-16 15:44:38 -0700 |
| commit | 8c9ae56dc73b5ae48a14000b96292bd4f2aeb710 (patch) | |
| tree | 4e0109788f7f84d1d5b594af4ead0797b4d63f6c /kernel | |
| parent | 75c70128a67311070115b90d826a229d4bbbb2b5 (diff) | |
sched/numa, mm: make numa migrate functions to take a folio
The cpupid (or access time) is stored in the head page for THP, so it is
safely to make should_numa_migrate_memory() and numa_hint_fault_latency()
to take a folio. This is in preparation for large folio numa balancing.
Link: https://lkml.kernel.org/r/20230921074417.24004-7-wangkefeng.wang@huawei.com
Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: "Huang, Ying" <ying.huang@intel.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Cc: Zi Yan <ziy@nvidia.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/sched/fair.c | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c index cb225921bbca..42aefe7e6fdc 100644 --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -1722,12 +1722,12 @@ static bool pgdat_free_space_enough(struct pglist_data *pgdat) * The smaller the hint page fault latency, the higher the possibility * for the page to be hot. */ -static int numa_hint_fault_latency(struct page *page) +static int numa_hint_fault_latency(struct folio *folio) { int last_time, time; time = jiffies_to_msecs(jiffies); - last_time = xchg_page_access_time(page, time); + last_time = xchg_page_access_time(&folio->page, time); return (time - last_time) & PAGE_ACCESS_TIME_MASK; } @@ -1784,7 +1784,7 @@ static void numa_promotion_adjust_threshold(struct pglist_data *pgdat, } } -bool should_numa_migrate_memory(struct task_struct *p, struct page * page, +bool should_numa_migrate_memory(struct task_struct *p, struct folio *folio, int src_nid, int dst_cpu) { struct numa_group *ng = deref_curr_numa_group(p); @@ -1814,16 +1814,16 @@ bool should_numa_migrate_memory(struct task_struct *p, struct page * page, numa_promotion_adjust_threshold(pgdat, rate_limit, def_th); th = pgdat->nbp_threshold ? : def_th; - latency = numa_hint_fault_latency(page); + latency = numa_hint_fault_latency(folio); if (latency >= th) return false; return !numa_promotion_rate_limit(pgdat, rate_limit, - thp_nr_pages(page)); + folio_nr_pages(folio)); } this_cpupid = cpu_pid_to_cpupid(dst_cpu, current->pid); - last_cpupid = page_cpupid_xchg_last(page, this_cpupid); + last_cpupid = page_cpupid_xchg_last(&folio->page, this_cpupid); if (!(sysctl_numa_balancing_mode & NUMA_BALANCING_MEMORY_TIERING) && !node_is_toptier(src_nid) && !cpupid_valid(last_cpupid)) |