cinap_lenrek ac52599eef ether82563: avoid deadlock due to icansleep() trying to acquire Rbpool.Lock ... icansleep() violates the lock ordering due to the following cases: rbfree(): ilock(Rbpool.Lock) -> wakeup(): spli(), lock(Rbpool.Rendez) sleep(): splhi(), lock(Rbpool.Rendez) -> icansleep(): ilock(Rbpool.Lock) erik fixed this moving the wakeup() out of the ilock() in rbfree(), but i think it is an error to try acquiering a ilock in sleeps wait condition function in general. so this is what we do: in the icansleep() function, we check for the *real* event we care about; that is, if theres a buffer available in the Rbpool. this is to handle the case when rbfree() makes a buffer available *before* it sees us setting p->starve = 1. p->starve is now just used to gate rbfree() from calling wakeup() as an optimization. this might cause spurious wakeups but they are not a problem. missed wakeups is the thing we have to prevent.		2013-07-26 01:51:03 +02:00
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doc	/sys/doc: permissions for cleanps, mkdirlist, mkfilelist	2012-10-20 19:09:54 +02:00
games/lib	fortunes: Let me put in a word about the Apple wireless trackpad.	2013-07-05 15:41:51 -04:00
include	draw: add badrect() function to reject zero, negative size or orverly huge rectangles	2013-06-16 19:01:46 +02:00
lib	acid: fix dumptree() acid function to work in kernel debug, update malloc.acid and pool.acid files	2013-06-10 01:13:21 +02:00
man	tojpg, totif: change flags to better match those of the decoders	2013-07-20 12:11:52 -04:00
src	ether82563: avoid deadlock due to icansleep() trying to acquire Rbpool.Lock	2013-07-26 01:51:03 +02:00