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Merge branches 'doc.2015.02.26a', 'earlycb.2015.03.03a', 'fixes.2015.03.03a', 'gpexp.2015.02.26a', 'hotplug.2015.03.20a', 'sysidle.2015.02.26b' and 'tiny.2015.02.26a' into HEAD

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doc.2015.02.26a:  Documentation changes
earlycb.2015.03.03a:  Permit early-boot RCU callbacks
fixes.2015.03.03a:  Miscellaneous fixes
gpexp.2015.02.26a:  In-kernel expediting of normal grace periods
hotplug.2015.03.20a:  CPU hotplug fixes
sysidle.2015.02.26b:  NO_HZ_FULL_SYSIDLE fixes
tiny.2015.02.26a:  TINY_RCU fixes
This commit is contained in:
Paul E. McKenney
2015-03-20 08:31:01 -07:00
parent ff38281059 4762767810 9910affa89 c136f99104 654e953340 5871968d53 915e8a4fe4
commit 42528795ac
26 changed files with 863 additions and 377 deletions
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lib/Kconfig.debug
+25 -10
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@@ -1180,16 +1180,7 @@ config DEBUG_CREDENTIALS
menu "RCU Debugging"
config PROVE_RCU
bool "RCU debugging: prove RCU correctness"
depends on PROVE_LOCKING
default n
help
This feature enables lockdep extensions that check for correct
use of RCU APIs. This is currently under development. Say Y
if you want to debug RCU usage or help work on the PROVE_RCU
feature.
Say N if you are unsure.
def_bool PROVE_LOCKING
config PROVE_RCU_REPEATEDLY
bool "RCU debugging: don't disable PROVE_RCU on first splat"
@@ -1257,6 +1248,30 @@ config RCU_TORTURE_TEST_RUNNABLE
Say N here if you want the RCU torture tests to start only
after being manually enabled via /proc.
config RCU_TORTURE_TEST_SLOW_INIT
bool "Slow down RCU grace-period initialization to expose races"
depends on RCU_TORTURE_TEST
help
This option makes grace-period initialization block for a
few jiffies between initializing each pair of consecutive
rcu_node structures. This helps to expose races involving
grace-period initialization, in other words, it makes your
kernel less stable. It can also greatly increase grace-period
latency, especially on systems with large numbers of CPUs.
This is useful when torture-testing RCU, but in almost no
other circumstance.
Say Y here if you want your system to crash and hang more often.
Say N if you want a sane system.
config RCU_TORTURE_TEST_SLOW_INIT_DELAY
int "How much to slow down RCU grace-period initialization"
range 0 5
default 3
help
This option specifies the number of jiffies to wait between
each rcu_node structure initialization.
config RCU_CPU_STALL_TIMEOUT
int "RCU CPU stall timeout in seconds"
depends on RCU_STALL_COMMON