diff options
| author | Andrew Morton <akpm@digeo.com> | 2002-10-29 23:31:27 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@penguin.transmeta.com> | 2002-10-29 23:31:27 -0800 |
| commit | c12e16e28b4cf576840cff509caf0c06ff4dc299 (patch) | |
| tree | 80b02d367e46a5bf4defa6b5f1946d0cdbdcf63b /include/linux | |
| parent | 0c83f291de08552b82d8e7975444198c43074f55 (diff) | |
[PATCH] percpu: convert RCU
Patch from Dipankar Sarma <dipankar@in.ibm.com>
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.
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/rcupdate.h | 15 |
1 files changed, 8 insertions, 7 deletions
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 <linux/list.h> #include <linux/spinlock.h> #include <linux/threads.h> +#include <linux/percpu.h> /** * 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 |