A-Team_Digital_Solutions/android_kernel_motorola_sm6375
Watch
2
0
Fork
You've already forked android_kernel_motorola_sm6375
 0
mirror of https://github.com/BobTheBlinker/android_kernel_motorola_sm6375.git synced 2026-10-30 11:41:38 -04:00
Code Issues Projects Releases Packages Wiki Activity

mm, THP, doc: Add document for thp_swpout/thp_swpout_fallback

Browse source 
Add document for newly added thp_swpout, thp_swpout_fallback fields in
/proc/vmstat.

Signed-off-by: "Huang, Ying" <[email protected]>
Cc: "Kirill A. Shutemov" <[email protected]>
Cc: Andrea Arcangeli <[email protected]>
Cc: Johannes Weiner <[email protected]>
Signed-off-by: Jonathan Corbet <[email protected]>
This commit is contained in:
Huang Ying 2018-05-09 16:23:41 +08:00 • committed by Jonathan Corbet
commit 8d420f6c27
1 changed files with 9 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

9
Documentation/vm/transhuge.rst
View file

@ -355,6 +355,15 @@ thp_zero_page_alloc_failed
is incremented if kernel fails to allocate
huge zero page and falls back to using small pages.
thp_swpout
is incremented every time a huge page is swapout in one
piece without splitting.
thp_swpout_fallback
is incremented if a huge page has to be split before swapout.
Usually because failed to allocate some continuous swap space
for the huge page.
As the system ages, allocating huge pages may be expensive as the
system uses memory compaction to copy data around memory to free a
huge page for use. There are some counters in ``/proc/vmstat`` to help