Paul E. McKenney d756c74e6f doc: Update RCU requirements RCU_INIT_POINTER() description ... Back in the day, RCU_INIT_POINTER() was the only way to avoid memory-barrier instructions while storing NULL to an RCU-protected pointer. Fortunately, in 2016, rcu_assign_pointer() started checking for compile-time NULL pointers and omitting the memory-barrier instructions in that case. Unfortunately, RCU's Requirements.rst document was not updated accordingly. This commit therefore at long last carries out that update. Fixes: 3a37f7275c ("rcu: No ordering for rcu_assign_pointer() of NULL") Link: https://lore.kernel.org/lkml/20201209230755.GV7338@casper.infradead.org/ Reported-by: Matthew Wilcox <willy@infradead.org> Acked-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Paul E. McKenney <paulmck@kernel.org>		2021-01-04 13:35:15 -08:00
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Design	doc: Update RCU requirements RCU_INIT_POINTER() description	2021-01-04 13:35:15 -08:00
arrayRCU.rst	doc: Convert arrayRCU.txt to arrayRCU.rst	2019-12-10 18:51:19 -08:00
checklist.rst	docs: Fix typos and drop/fix dead links in RCU documentation	2021-01-04 13:35:14 -08:00
index.rst	docs: RCU: Convert stallwarn.txt to ReST	2020-06-29 11:58:11 -07:00
listRCU.rst	doc/RCU/listRCU: Update example function name	2020-02-27 07:03:13 -08:00
lockdep-splat.rst	docs: RCU: Convert lockdep-splat.txt to ReST	2020-06-29 11:58:10 -07:00
lockdep.rst	docs: Fix function name trailing double-()s	2020-08-24 17:19:07 -06:00
NMI-RCU.rst	doc: Converted NMI-RCU.txt to NMI-RCU.rst.	2019-12-10 18:51:52 -08:00
rcu_dereference.rst	doc: Present the role of READ_ONCE()	2020-11-02 17:07:15 -08:00
rcu.rst	doc/RCU/rcu: Use https instead of http if possible	2020-02-27 07:03:13 -08:00
rcubarrier.rst	doc: Convert to rcubarrier.txt to ReST	2019-12-10 18:51:53 -08:00
rculist_nulls.rst	docs: RCU: Don't duplicate chapter names in rculist_nulls.rst	2020-06-29 11:58:11 -07:00
rcuref.rst	docs: RCU: Convert rcuref.txt to ReST	2020-06-29 11:58:11 -07:00
RTFP.txt	Documentation: fix common spelling mistakes	2016-04-28 07:51:59 -06:00
stallwarn.rst	doc: Timer problems can cause RCU CPU stall warnings	2020-06-29 11:58:11 -07:00
torture.rst	docs: RCU: Convert torture.txt to ReST	2020-06-29 11:58:11 -07:00
UP.rst	doc: RCU callback locks need only _bh, not necessarily _irq	2019-06-28 09:10:40 -06:00
whatisRCU.rst	docs/rcu: Update the call_rcu() API	2020-11-06 17:02:43 -08:00