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Diffstat (limited to 'kernel/rcu/tree.h')
-rw-r--r--kernel/rcu/tree.h11
1 files changed, 9 insertions, 2 deletions
diff --git a/kernel/rcu/tree.h b/kernel/rcu/tree.h
index 119de399eb2f..a69d3dab2ec4 100644
--- a/kernel/rcu/tree.h
+++ b/kernel/rcu/tree.h
@@ -141,12 +141,20 @@ struct rcu_node {
/* complete (only for PREEMPT_RCU). */
unsigned long qsmaskinit;
/* Per-GP initial value for qsmask & expmask. */
+ /* Initialized from ->qsmaskinitnext at the */
+ /* beginning of each grace period. */
+ unsigned long qsmaskinitnext;
+ /* Online CPUs for next grace period. */
unsigned long grpmask; /* Mask to apply to parent qsmask. */
/* Only one bit will be set in this mask. */
int grplo; /* lowest-numbered CPU or group here. */
int grphi; /* highest-numbered CPU or group here. */
u8 grpnum; /* CPU/group number for next level up. */
u8 level; /* root is at level 0. */
+ bool wait_blkd_tasks;/* Necessary to wait for blocked tasks to */
+ /* exit RCU read-side critical sections */
+ /* before propagating offline up the */
+ /* rcu_node tree? */
struct rcu_node *parent;
struct list_head blkd_tasks;
/* Tasks blocked in RCU read-side critical */
@@ -448,8 +456,6 @@ struct rcu_state {
long qlen; /* Total number of callbacks. */
/* End of fields guarded by orphan_lock. */
- struct mutex onoff_mutex; /* Coordinate hotplug & GPs. */
-
struct mutex barrier_mutex; /* Guards barrier fields. */
atomic_t barrier_cpu_count; /* # CPUs waiting on. */
struct completion barrier_completion; /* Wake at barrier end. */
@@ -559,6 +565,7 @@ static void rcu_prepare_kthreads(int cpu);
static void rcu_cleanup_after_idle(void);
static void rcu_prepare_for_idle(void);
static void rcu_idle_count_callbacks_posted(void);
+static bool rcu_preempt_has_tasks(struct rcu_node *rnp);
static void print_cpu_stall_info_begin(void);
static void print_cpu_stall_info(struct rcu_state *rsp, int cpu);
static void print_cpu_stall_info_end(void);