Paul E. McKenney fe5ac724d8 rcu: Remove nohz_full full-system-idle state machine
The NO_HZ_FULL_SYSIDLE full-system-idle capability was added in 2013
by commit 0edd1b1784cb ("nohz_full: Add full-system-idle state machine"),
but has not been used.  This commit therefore removes it.

If it turns out to be needed later, this commit can always be reverted.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Rik van Riel <riel@redhat.com>
Cc: Ingo Molnar <mingo@kernel.org>
Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-06-08 18:52:39 -07:00

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This document gives a brief rationale for the TINY_RCU test cases.
Kconfig Parameters:
CONFIG_DEBUG_LOCK_ALLOC -- Do all three and none of the three.
CONFIG_PREEMPT_COUNT
CONFIG_RCU_TRACE
The theory here is that randconfig testing will hit the other six possible
combinations of these parameters.
Kconfig Parameters Ignored:
CONFIG_DEBUG_OBJECTS_RCU_HEAD
CONFIG_PROVE_RCU
In common code tested by TREE_RCU test cases.
CONFIG_RCU_NOCB_CPU
Meaningless for TINY_RCU.
CONFIG_RCU_STALL_COMMON
CONFIG_RCU_TORTURE_TEST
Redundant with CONFIG_RCU_TRACE.
CONFIG_HOTPLUG_CPU
CONFIG_PREEMPT
CONFIG_PREEMPT_RCU
CONFIG_SMP
CONFIG_TINY_RCU
CONFIG_PREEMPT_RCU
CONFIG_TREE_RCU
All forced by CONFIG_TINY_RCU.