On Fri, 31 Aug 2018 08:35:28 +0900 Masami Hiramatsu mhiramat@kernel.org wrote:
On Thu, 30 Aug 2018 11:50:55 -0400 Steven Rostedt rostedt@goodmis.org wrote:
On Thu, 30 Aug 2018 16:12:18 +0900 Masami Hiramatsu mhiramat@kernel.org wrote:
I'm fine with this, but one day I need to port over some of my other tests. I have a test that stresses the ring buffer size (basically checks to see if it can cause an oom). I need to port that to selftests. But for now...
Hmm, such stress test is not good for kselftest, since it can cause oom and kill some test process. Maybe we should have such stresstest framework (which allows test to crash kernel)
The point of the test is to make sure that it doesn't kill everything :-) The ring buffer code is suppose to detect that it will cause an OOM, and if it does that's considered a failure.
Ah, OK, so the test itself must not cause OOM. That's reasonable. :)
Just like any other test, if it fails, it can crash the kernel. But the ring buffer code is suppose to be able to keep the kernel from crashing (including triggering OOM) if the buffer size is stressed.
Maybe I'll port that over today :-/
Looking forward it!
Unfortunately, I didn't get to it, and will be on PTO for the next 4 days. Perhaps next week.
-- Steve