RFC memcg: add support for hwpoison testing
Get series with b4
b4 am [email protected]Versions newest first
- v1 RFC Latest4 patches 10 repliesIn review
Patches in v1 No applies recorded yet
| # | Subject and files | Size | Replies | Applied |
|---|---|---|---|---|
| 1/4 | memcg: show memory.id in cgroupfsmm/ | +9 | 0 replies | |
| 2/4 | memcg: rename and export try_get_mem_cgroup_from_page()include/ mm/ | +11 | 0 replies | |
| 3/4 | memcg: add accessor to mem_cgroup.cssinclude/ mm/ | +13 | 0 replies | |
| 4/4 | HWPOISON: memory cgroup based hwpoison injection filteringmm/ | +37 | 0 replies |
Reviews trailers per patch
No Reviewed-by, Acked-by or Tested-by trailers for v1 yet.
Cover letter [RFC][PATCH 0/4] memcg: add support for hwpoison testing
Hi all,
In hardware poison testing, we want to inject hwpoison errors to pages of a collection of selected tasks, so that random tasks (eg. init) won't be killed in stress tests and lead to test failure.
Memory cgroup provides an ideal tool for tracking and testing these target process pages. All we have to do is to
- export the memory cgroup id via cgroupfs
- export two functions/structs for hwpoison_inject.c
This might be an unexpected usage of memory cgroup. The last patch and this script demonstrates how the exported interfaces are to be used to limit the scope of hwpoison injection.
test -d /cgroup/hwpoison && rmdir /cgroup/hwpoison mkdir /cgroup/hwpoison usemem -m 100 -s 100 & # eat 100MB and sleep 100s echo `pidof usemem` > /cgroup/hwpoison/tasks
==> memcg_id=$(</cgroup/hwpoison/memory.id)
==> echo $memcg_id > /debug/hwpoison/corrupt-filter-memcg
# hwpoison all pfn pfn=0 while true do let pfn=pfn+1 echo $pfn > /debug/hwpoison/corrupt-pfn if [ $? -ne 0 ]; then break fi done
Comments are welcome, thanks!
Cheers,
Fengguang
Signature · 5 lines
-- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to [email protected]. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"[email protected]"> [email protected] </a>