Frederic Weisbecker <[email protected]> writes: > On Tue, Jun 18, 2013 at 04:58:28PM -0700, Kevin Hilman wrote: >> Allow sysctl 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 <[email protected]> >> Signed-off-by: Kevin Hilman <[email protected]> > > This looks like a useful thing but I wonder if a debugfs file would > be more appropriate than sysctl. > > The scheduler tick max deferment is supposed to be a temporary > hack so we probably don't want to bring a real user ABI for that.
I wondered about that as well, but I wasn't sure if the existing knobs under CONFIG_SCHED_DEBUG (sched_min_granularity_ns, sched_latency_ns, etc.) are considered permanant ABI, or optional debugging tools. This new option is inside CONFIG_SCHED_DEBUG along with the others, but if debugfs is preferred I can move it there. It seems strange though to just have this knob in debugfs and the rest in sysctl under CONFIG_SCHED_DEBUG. Thanks, Kevin -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
