Frederic Weisbecker fweisbec@gmail.com writes:
On Fri, Sep 26, 2014 at 12:45:32PM -0700, Kevin Hilman wrote:
From: Kevin Hilman khilman@linaro.org
Allow debugfs override of sched_tick_max_deferment in order to ease finding/fixing the remaining issues with full nohz.
The value to be written is in jiffies, and -1 means the max deferment is disabled (scheduler_tick_max_deferment() returns KTIME_MAX.)
Cc: Frederic Weisbecker fweisbec@gmail.com Signed-off-by: Kevin Hilman khilman@linaro.org
So, I'm worried that it becomes a hack that everybody uses to shutdown the tick completely then nobody will come and fix the issue that prevents from doing it properly.
OK.
I seriously doubt this will be used for development purpose to help fixing the real problem.
Well, that's what I was using it for, until I was distracted by other tasks.
Quite the opposite. If developers want to do testing, they can as well comment out the call to scheduler_max_tick_deferment().
OK, fair enough.
Thanks,
Kevin