From: Thomas Prescher <thomas.prescher@xxxxxxxxxxxxxxxxxxxxx> Having this information allows users to easily tune the hugepages_node_threads parameter. Signed-off-by: Thomas Prescher <thomas.prescher@xxxxxxxxxxxxxxxxxxxxx> --- mm/hugetlb.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/mm/hugetlb.c b/mm/hugetlb.c index b7d24c41e0f9d22f5b86c253e29a2eca28460026..2aa5724a385494f9d6f1d644a2bfe547591fc96c 100644 --- a/mm/hugetlb.c +++ b/mm/hugetlb.c @@ -3428,6 +3428,9 @@ static unsigned long __init hugetlb_pages_alloc_boot(struct hstate *h) .numa_aware = true }; + unsigned long jiffies_start; + unsigned long jiffies_end; + job.thread_fn = hugetlb_pages_alloc_boot_node; job.start = 0; job.size = h->max_huge_pages; @@ -3450,7 +3453,13 @@ static unsigned long __init hugetlb_pages_alloc_boot(struct hstate *h) */ job.max_threads = num_node_state(N_MEMORY) * allocation_threads_per_node; job.min_chunk = h->max_huge_pages / num_node_state(N_MEMORY) / allocation_threads_per_node; + + jiffies_start = jiffies; padata_do_multithreaded(&job); + jiffies_end = jiffies; + + printk(KERN_DEBUG "HugeTLB: allocation took %dms\n", + jiffies_to_msecs(jiffies_end - jiffies_start)); return h->nr_huge_pages; } -- 2.48.1
