linux/arch/frv
Frederic Weisbecker 41d8fe5bb3 frv: 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 the Frv's idle loop.

Reported-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: David Howells <dhowells@redhat.com>
Cc: <stable@vger.kernel.org> # 3.3+
Acked-by: David Howells <dhowells@redhat.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
2012-09-23 07:44:45 -07:00
..
boot
include/asm Merge branch 'akpm' (Andrew's patch-bomb) 2012-07-30 17:25:34 -07:00
kernel frv: Add missing RCU idle APIs on idle loop 2012-09-23 07:44:45 -07:00
lib
mb93090-mb00 Merge branch 'kmap_atomic' of git://github.com/congwang/linux 2012-07-27 11:26:48 -07:00
mm frv: remove the second parameter of kmap_atomic_primary() 2012-07-23 14:11:22 +08:00
defconfig kconfig: rename CONFIG_EMBEDDED to CONFIG_EXPERT 2011-01-20 17:02:05 -08:00
Kconfig ipc: use Kconfig options for __ARCH_WANT_[COMPAT_]IPC_PARSE_VERSION 2012-07-30 17:25:21 -07:00
Kconfig.debug
Makefile frv: Use generic init_task 2012-05-05 13:00:23 +02:00