leandrof/linux
1
0
Fork 0
forked from Minki/linux
Code Issues Pull Requests Packages Projects Releases Wiki Activity

mm/vmalloc: make show_numa_info() aware of hugepage mappings

Browse Source 
show_numa_info() can be slightly faster, by skipping over hugepages
directly.

Link: https://lkml.kernel.org/r/20211001172725.105824-1-eric.dumazet@gmail.com
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Uladzislau Rezki (Sony) <urezki@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Eric Dumazet 2021-11-05 13:39:25 -07:00 committed by Linus Torvalds
parent bd1a8fb2d4
commit 51e50b3a22
1 changed files with 3 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
mm/vmalloc.c
View File

@ -3864,6 +3864,7 @@ static void show_numa_info(struct seq_file *m, struct vm_struct *v)
{
if (IS_ENABLED(CONFIG_NUMA)) {
unsigned int nr, *counters = m->private;
unsigned int step = 1U << vm_area_page_order(v);
if (!counters)
return;
@ -3875,9 +3876,8 @@ static void show_numa_info(struct seq_file *m, struct vm_struct *v)
memset(counters, 0, nr_node_ids * sizeof(unsigned int));
for (nr = 0; nr < v->nr_pages; nr++)
counters[page_to_nid(v->pages[nr])]++;
for (nr = 0; nr < v->nr_pages; nr += step)
counters[page_to_nid(v->pages[nr])] += step;
for_each_node_state(nr, N_HIGH_MEMORY)
if (counters[nr])
seq_printf(m, " N%u=%u", nr, counters[nr]);