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| author | Ingo Molnar <mingo@elte.hu> | 2009-04-07 10:05:21 (GMT) |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-04-07 10:05:25 (GMT) |
| commit | 6c009ecef8cca28c7c09eb16d0802e37915a76e1 (patch) | |
| tree | 11c773f780186fdb9fbc9c80a73fb7c8426b1fba /kernel/rcutree.c | |
| parent | 98c2aaf8be5baf7193be37fb28bce8e7327158bc (diff) | |
| parent | d508afb437daee7cf07da085b635c44a4ebf9b38 (diff) | |
| download | linux-6c009ecef8cca28c7c09eb16d0802e37915a76e1.tar.xz | |
Merge branch 'linus' into perfcounters/core
Merge reason: need the upstream facility added by:
7f1e2ca: hrtimer: fix rq->lock inversion (again)
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel/rcutree.c')
| -rw-r--r-- | kernel/rcutree.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/kernel/rcutree.c b/kernel/rcutree.c index 97ce315..7f32669 100644 --- a/kernel/rcutree.c +++ b/kernel/rcutree.c @@ -78,6 +78,26 @@ DEFINE_PER_CPU(struct rcu_data, rcu_data); struct rcu_state rcu_bh_state = RCU_STATE_INITIALIZER(rcu_bh_state); DEFINE_PER_CPU(struct rcu_data, rcu_bh_data); +/* + * Increment the quiescent state counter. + * The counter is a bit degenerated: We do not need to know + * how many quiescent states passed, just if there was at least + * one since the start of the grace period. Thus just a flag. + */ +void rcu_qsctr_inc(int cpu) +{ + struct rcu_data *rdp = &per_cpu(rcu_data, cpu); + rdp->passed_quiesc = 1; + rdp->passed_quiesc_completed = rdp->completed; +} + +void rcu_bh_qsctr_inc(int cpu) +{ + struct rcu_data *rdp = &per_cpu(rcu_bh_data, cpu); + rdp->passed_quiesc = 1; + rdp->passed_quiesc_completed = rdp->completed; +} + #ifdef CONFIG_NO_HZ DEFINE_PER_CPU(struct rcu_dynticks, rcu_dynticks) = { .dynticks_nesting = 1, |