diff options
Diffstat (limited to 'kernel/rcutree.h')
| -rw-r--r-- | kernel/rcutree.h | 23 |
1 files changed, 15 insertions, 8 deletions
diff --git a/kernel/rcutree.h b/kernel/rcutree.h index cdd1be0a4072..7f5d138dedf5 100644 --- a/kernel/rcutree.h +++ b/kernel/rcutree.h @@ -29,18 +29,14 @@ #include <linux/seqlock.h> /* - * Define shape of hierarchy based on NR_CPUS and CONFIG_RCU_FANOUT. + * Define shape of hierarchy based on NR_CPUS, CONFIG_RCU_FANOUT, and + * CONFIG_RCU_FANOUT_LEAF. * In theory, it should be possible to add more levels straightforwardly. * In practice, this did work well going from three levels to four. * Of course, your mileage may vary. */ #define MAX_RCU_LVLS 4 -#if CONFIG_RCU_FANOUT > 16 -#define RCU_FANOUT_LEAF 16 -#else /* #if CONFIG_RCU_FANOUT > 16 */ -#define RCU_FANOUT_LEAF (CONFIG_RCU_FANOUT) -#endif /* #else #if CONFIG_RCU_FANOUT > 16 */ -#define RCU_FANOUT_1 (RCU_FANOUT_LEAF) +#define RCU_FANOUT_1 (CONFIG_RCU_FANOUT_LEAF) #define RCU_FANOUT_2 (RCU_FANOUT_1 * CONFIG_RCU_FANOUT) #define RCU_FANOUT_3 (RCU_FANOUT_2 * CONFIG_RCU_FANOUT) #define RCU_FANOUT_4 (RCU_FANOUT_3 * CONFIG_RCU_FANOUT) @@ -371,6 +367,17 @@ struct rcu_state { raw_spinlock_t onofflock; /* exclude on/offline and */ /* starting new GP. */ + struct rcu_head *orphan_nxtlist; /* Orphaned callbacks that */ + /* need a grace period. */ + struct rcu_head **orphan_nxttail; /* Tail of above. */ + struct rcu_head *orphan_donelist; /* Orphaned callbacks that */ + /* are ready to invoke. */ + struct rcu_head **orphan_donetail; /* Tail of above. */ + long qlen_lazy; /* Number of lazy callbacks. */ + long qlen; /* Total number of callbacks. */ + struct task_struct *rcu_barrier_in_progress; + /* Task doing rcu_barrier(), */ + /* or NULL if no barrier. */ raw_spinlock_t fqslock; /* Only one task forcing */ /* quiescent states. */ unsigned long jiffies_force_qs; /* Time at which to invoke */ @@ -423,7 +430,6 @@ DECLARE_PER_CPU(char, rcu_cpu_has_work); /* Forward declarations for rcutree_plugin.h */ static void rcu_bootup_announce(void); long rcu_batches_completed(void); -static void rcu_preempt_note_context_switch(int cpu); static int rcu_preempt_blocked_readers_cgp(struct rcu_node *rnp); #ifdef CONFIG_HOTPLUG_CPU static void rcu_report_unblock_qs_rnp(struct rcu_node *rnp, @@ -471,6 +477,7 @@ static void __cpuinit rcu_prepare_kthreads(int cpu); static void rcu_prepare_for_idle_init(int cpu); static void rcu_cleanup_after_idle(int cpu); static void rcu_prepare_for_idle(int cpu); +static void rcu_idle_count_callbacks_posted(void); 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); |