On Mon, Jul 28, 2014 at 03:56:13PM -0700, Paul E. McKenney wrote: > From: "Paul E. McKenney" <paul...@linux.vnet.ibm.com> > > RCU-tasks requires the occasional voluntary context switch > from CPU-bound in-kernel tasks. In some cases, this requires > instrumenting cond_resched(). However, there is some reluctance > to countenance unconditionally instrumenting cond_resched() (see > http://lwn.net/Articles/603252/),
No, if its a good reason mention it, if not ignore it. > so this commit creates a separate > cond_resched_rcu_qs() that may be used in place of cond_resched() in > locations prone to long-duration in-kernel looping. Sounds like a pain and a recipe for mistakes. How is joe kernel hacker supposed to 1) know about this new api, and 2) decide which to use? Heck, even I wouldn't know, and I just read the damn patch.
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