Re: [PATCH tip/core/rcu 1/2] rcu: Provide RCU CPU stall warnings for tiny RCU

2013-01-28 Thread Paul E. McKenney
On Sun, Jan 27, 2013 at 09:57:08PM +1100, Josh Triplett wrote: > On Sat, Jan 26, 2013 at 04:23:46PM -0800, Paul E. McKenney wrote: > > From: "Paul E. McKenney" > > > > Tiny RCU has historically omitted RCU CPU stall warnings in order to > > reduce memory requirements, however, lack of these warni

Re: [PATCH tip/core/rcu 1/2] rcu: Provide RCU CPU stall warnings for tiny RCU

2013-01-27 Thread Josh Triplett
On Sat, Jan 26, 2013 at 04:23:46PM -0800, Paul E. McKenney wrote: > From: "Paul E. McKenney" > > Tiny RCU has historically omitted RCU CPU stall warnings in order to > reduce memory requirements, however, lack of these warnings caused > Thomas Gleixner some debugging pain recently. Therefore, th

[PATCH tip/core/rcu 1/2] rcu: Provide RCU CPU stall warnings for tiny RCU

2013-01-26 Thread Paul E. McKenney
From: "Paul E. McKenney" Tiny RCU has historically omitted RCU CPU stall warnings in order to reduce memory requirements, however, lack of these warnings caused Thomas Gleixner some debugging pain recently. Therefore, this commit adds RCU CPU stall warnings to tiny RCU if RCU_TRACE=y. This keep