Messages in this thread | | | Date | Thu, 18 Jan 2018 19:20:23 -0500 | From | Steven Rostedt <> | Subject | Re: [PATCH v5 1/2] printk: Add console owner and waiter logic to load balance console writes |
| |
On Thu, 18 Jan 2018 23:03:24 +0100 Pavel Machek <pavel@ucw.cz> wrote:
> > To demonstrate the issue, this module has been shown to lock up a > > system with 4 CPUs and a slow console (like a serial console). It is > > also able to lock up a 8 CPU system with only a fast (VGA) console, by > > passing in "loops=100". The changes in this commit prevent this module > > from locking up the system. > > > > #include <linux/module.h> > > #include <linux/delay.h> > > #include <linux/sched.h> > > #include <linux/mutex.h> > > #include <linux/workqueue.h> > > #include <linux/hrtimer.h> > > Programs in commit messages. Not preffered way to distribute code, I'd > say. What about putting it into kernel selftests directory or > something like that?
It's not really a program, but a module. I could add a real module that can test this, and people can modprobe it if they want to make sure there's no regressions.
I can send a patch.
-- Steve
| |