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Merge branch 'rcu/next' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-2.6-rcu into core/rcu

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This commit is contained in:
Ingo Molnar 2010-08-23 11:32:34 +02:00
commit a6b9b4d50f
54 changed files with 1364 additions and 458 deletions
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37
lib/Kconfig.debug
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@ -539,6 +539,19 @@ config PROVE_RCU_REPEATEDLY
disabling, allowing multiple RCU-lockdep warnings to be printed
on a single reboot.
config SPARSE_RCU_POINTER
bool "RCU debugging: sparse-based checks for pointer usage"
default n
help
This feature enables the __rcu sparse annotation for
RCU-protected pointers. This annotation will cause sparse
to flag any non-RCU used of annotated pointers. This can be
helpful when debugging RCU usage. Please note that this feature
is not intended to enforce code cleanliness; it is instead merely
a debugging aid.
Say Y to make sparse flag questionable use of RCU-protected pointers
Say N if you are unsure.
config LOCKDEP
@ -832,6 +845,30 @@ config RCU_CPU_STALL_DETECTOR
Say Y if you are unsure.
config RCU_CPU_STALL_TIMEOUT
int "RCU CPU stall timeout in seconds"
depends on RCU_CPU_STALL_DETECTOR
range 3 300
default 60
help
If a given RCU grace period extends more than the specified
number of seconds, a CPU stall warning is printed. If the
RCU grace period persists, additional CPU stall warnings are
printed at more widely spaced intervals.
config RCU_CPU_STALL_DETECTOR_RUNNABLE
bool "RCU CPU stall checking starts automatically at boot"
depends on RCU_CPU_STALL_DETECTOR
default y
help
If set, start checking for RCU CPU stalls immediately on
boot. Otherwise, RCU CPU stall checking must be manually
enabled.
Say Y if you are unsure.
Say N if you wish to suppress RCU CPU stall checking during boot.
config RCU_CPU_STALL_VERBOSE
bool "Print additional per-task information for RCU_CPU_STALL_DETECTOR"
depends on RCU_CPU_STALL_DETECTOR && TREE_PREEMPT_RCU

2
lib/radix-tree.c
View file

@ -49,7 +49,7 @@ struct radix_tree_node {
unsigned int height; /* Height from the bottom */
unsigned int count;
struct rcu_head rcu_head;
void *slots[RADIX_TREE_MAP_SIZE];
void __rcu *slots[RADIX_TREE_MAP_SIZE];
unsigned long tags[RADIX_TREE_MAX_TAGS][RADIX_TREE_TAG_LONGS];
};