From c12e16e28b4cf576840cff509caf0c06ff4dc299 Mon Sep 17 00:00:00 2001 From: Andrew Morton Date: Tue, 29 Oct 2002 23:31:27 -0800 Subject: [PATCH] percpu: convert RCU Patch from Dipankar Sarma This patch convers RCU per_cpu data to use per_cpu data area and makes it safe for cpu_possible allocation by using CPU notifiers. --- include/linux/rcupdate.h | 15 ++++++++------- 1 file changed, 8 insertions(+), 7 deletions(-) (limited to 'include/linux') diff --git a/include/linux/rcupdate.h b/include/linux/rcupdate.h index a5ffb7bb5743..e9e2287e1e1c 100644 --- a/include/linux/rcupdate.h +++ b/include/linux/rcupdate.h @@ -39,6 +39,7 @@ #include #include #include +#include /** * struct rcu_head - callback structure for use with RCU @@ -94,16 +95,16 @@ struct rcu_data { long batch; /* Batch # for current RCU batch */ struct list_head nxtlist; struct list_head curlist; -} ____cacheline_aligned_in_smp; +}; -extern struct rcu_data rcu_data[NR_CPUS]; +DECLARE_PER_CPU(struct rcu_data, rcu_data); extern struct rcu_ctrlblk rcu_ctrlblk; -#define RCU_qsctr(cpu) (rcu_data[(cpu)].qsctr) -#define RCU_last_qsctr(cpu) (rcu_data[(cpu)].last_qsctr) -#define RCU_batch(cpu) (rcu_data[(cpu)].batch) -#define RCU_nxtlist(cpu) (rcu_data[(cpu)].nxtlist) -#define RCU_curlist(cpu) (rcu_data[(cpu)].curlist) +#define RCU_qsctr(cpu) (per_cpu(rcu_data, (cpu)).qsctr) +#define RCU_last_qsctr(cpu) (per_cpu(rcu_data, (cpu)).last_qsctr) +#define RCU_batch(cpu) (per_cpu(rcu_data, (cpu)).batch) +#define RCU_nxtlist(cpu) (per_cpu(rcu_data, (cpu)).nxtlist) +#define RCU_curlist(cpu) (per_cpu(rcu_data, (cpu)).curlist) #define RCU_QSCTR_INVALID 0 -- cgit v1.2.3