[PATCH] Documentation/vm/page_owner.rst: Update the documentation
From: Shenghong Han <hidden>
Date: 2021-12-14 13:48:43
Also in:
lkml
Subsystem:
documentation, the rest · Maintainers:
Jonathan Corbet, Linus Torvalds
Update the documentation of ``page_owner``. Signed-off-by: Shenghong Han <redacted> --- Documentation/vm/page_owner.rst | 21 ++++++++++++++++++++- 1 file changed, 20 insertions(+), 1 deletion(-)
diff --git a/Documentation/vm/page_owner.rst b/Documentation/vm/page_owner.rst
index 9837fc8147dd..7a28e7b0d9c2 100644
--- a/Documentation/vm/page_owner.rst
+++ b/Documentation/vm/page_owner.rst@@ -97,7 +97,7 @@ Usage The ``page_owner_sort`` tool ignores ``PFN`` rows, puts the remaining rows in buf, uses regexp to extract the page order value, counts the times - and pages of buf, and finally sorts them according to the times. + and pages of buf, and finally sorts them according to the parameter(s). See the result about who allocated each page in the ``sorted_page_owner.txt``. General output:
@@ -108,3 +108,22 @@ Usage By default, ``page_owner_sort`` is sorted according to the times of buf. If you want to sort by the pages nums of buf, use the ``-m`` parameter. + The detail parameters are shown as follows: + + fundamental function: + + Sort: + -a Sort by memory allocate time. + -m Sort by total memory. + -p Sort by pid. + -r Sort by memory release time. + -s Sort by the stack trace. + -t Sort by times (default). + + additional function: + + Cull: + -c Cull by comparing stacktrace instead of total block. + + Filter: + -f Filter out the information of blocks whose memory has not been released.
--
2.30.1