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| author | Oleg Nesterov <oleg@tv-sign.ru> | 2006-01-08 22:19:16 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-01-09 09:35:44 -0800 |
| commit | 677517771b7b6efaf8617e70f655b16f3cafcc9b (patch) | |
| tree | 811f5df7b430cf865ac337f73c7aa2f67cb0bbac /kernel/rcupdate.c | |
| parent | e2688f00dc0ceb9d9867434dffbd080411fc23b0 (diff) | |
| download | linux-677517771b7b6efaf8617e70f655b16f3cafcc9b.tar.gz | |
[PATCH] rcu: uninline __rcu_pending()
__rcu_pending() is rather fat and called twice from rcu_pending(). rcu_pending() has multiple callers, and not that small too. This patch uninlines both of them. Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru> Acked-by: Paul E. McKenney <paulmck@us.ibm.com> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'kernel/rcupdate.c')
| -rw-r--r-- | kernel/rcupdate.c | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/kernel/rcupdate.c b/kernel/rcupdate.c index 30b0bba03859..ccc45d49ce71 100644 --- a/kernel/rcupdate.c +++ b/kernel/rcupdate.c @@ -429,6 +429,36 @@ static void rcu_process_callbacks(unsigned long unused) &__get_cpu_var(rcu_bh_data)); } +static int __rcu_pending(struct rcu_ctrlblk *rcp, struct rcu_data *rdp) +{ + /* This cpu has pending rcu entries and the grace period + * for them has completed. + */ + if (rdp->curlist && !rcu_batch_before(rcp->completed, rdp->batch)) + return 1; + + /* This cpu has no pending entries, but there are new entries */ + if (!rdp->curlist && rdp->nxtlist) + return 1; + + /* This cpu has finished callbacks to invoke */ + if (rdp->donelist) + return 1; + + /* The rcu core waits for a quiescent state from the cpu */ + if (rdp->quiescbatch != rcp->cur || rdp->qs_pending) + return 1; + + /* nothing to do */ + return 0; +} + +int rcu_pending(int cpu) +{ + return __rcu_pending(&rcu_ctrlblk, &per_cpu(rcu_data, cpu)) || + __rcu_pending(&rcu_bh_ctrlblk, &per_cpu(rcu_bh_data, cpu)); +} + void rcu_check_callbacks(int cpu, int user) { if (user || |