WSL2-Linux-Kernel/arch/score
Frederic Weisbecker 0ee23fda59 score: Add missing RCU idle APIs on idle loop
In the old times, the whole idle task was considered
as an RCU quiescent state. But as RCU became more and
more successful overtime, some RCU read side critical
section have been added even in the code of some
architectures idle tasks, for tracing for example.

So nowadays, rcu_idle_enter() and rcu_idle_exit() must
be called by the architecture to tell RCU about the part
in the idle loop that doesn't make use of rcu read side
critical sections, typically the part that puts the CPU
in low power mode.

This is necessary for RCU to find the quiescent states in
idle in order to complete grace periods.

Add this missing pair of calls in scores's idle loop.

Reported-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Chen Liqin <liqin.chen@sunplusct.com>
Cc: Lennox Wu <lennox.wu@gmail.com>
Cc: <stable@vger.kernel.org> # 3.3+
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
2012-09-23 07:44:50 -07:00
..
boot score: Add support for Sunplus S+core architecture 2009-06-19 11:38:47 +02:00
configs kconfig: rename CONFIG_EMBEDDED to CONFIG_EXPERT 2011-01-20 17:02:05 -08:00
include/asm Merge branch 'next' of git://git.kernel.org/pub/scm/virt/kvm/kvm 2012-05-24 16:17:30 -07:00
kernel score: Add missing RCU idle APIs on idle loop 2012-09-23 07:44:50 -07:00
lib score: remove __{put,get}_user_unknown 2009-06-19 11:41:07 +02:00
mm mm: now that all old mmu_gather code is gone, remove the storage 2011-05-25 08:39:16 -07:00
Kconfig timers: Fixup the Kconfig consolidation fallout 2012-05-21 23:43:46 +02:00
Kconfig.debug score: Fix typo in Kconfig.debug 2012-02-05 17:14:48 +01:00
Makefile Fix common misspellings 2011-03-31 11:26:23 -03:00