Brent Busby brent at keycorner.org
Fri Jul 24 15:55:14 EDT 2009

Looking over Linux kernel list archives and other places, it looks like 
when the "RCU Implementation" choice hit the mainline non-patched 
kernel, the option to choose "Preemptable RCU" caused quite a stir as 
many latent bugs were uncovered.

It looks like many bugs got fixed, but is it safe now?  Should one 
enable CONFIG_PREEMPT_RCU on a kernel these days?  It seems to 
be available even without RT patches.

+ Brent A. Busby	 + "We've all heard that a million monkeys
+ UNIX Systems Admin	 +  banging on a million typewriters will
+ University of Chicago	 +  eventually reproduce the entire works of
+ Physical Sciences Div. +  Shakespeare.  Now, thanks to the Internet,
+ James Franck Institute +  we know this is not true." -Robert Wilensky

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