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| author | Alexander Gordeev <agordeev@redhat.com> | 2015-02-11 15:42:38 +0100 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2015-02-26 21:11:53 +0100 |
| commit | 915e8a4fe45eab871a862f6467ec7e59864735b2 (patch) | |
| tree | 208961b9815145417216d6c85abf1a0789b24b70 | |
| parent | rcu: Remove unnecessary condition check in rcu_qsctr_help() (diff) | |
| download | linux-915e8a4fe45eab871a862f6467ec7e59864735b2.tar.xz linux-915e8a4fe45eab871a862f6467ec7e59864735b2.zip | |
rcu: Remove fastpath from __rcu_process_callbacks()
The standard code path accommodates a condition when no
RCU callbacks are ready to invoke. Since size of the code
is a priority for tiny RCU, remove the fast path.
Cc: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
Signed-off-by: Alexander Gordeev <agordeev@redhat.com>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
| -rw-r--r-- | kernel/rcu/tiny.c | 11 |
1 files changed, 0 insertions, 11 deletions
diff --git a/kernel/rcu/tiny.c b/kernel/rcu/tiny.c index d4e7fe5f3baf..069742d61c68 100644 --- a/kernel/rcu/tiny.c +++ b/kernel/rcu/tiny.c @@ -168,17 +168,6 @@ static void __rcu_process_callbacks(struct rcu_ctrlblk *rcp) unsigned long flags; RCU_TRACE(int cb_count = 0); - /* If no RCU callbacks ready to invoke, just return. */ - if (&rcp->rcucblist == rcp->donetail) { - RCU_TRACE(trace_rcu_batch_start(rcp->name, 0, 0, -1)); - RCU_TRACE(trace_rcu_batch_end(rcp->name, 0, - !!ACCESS_ONCE(rcp->rcucblist), - need_resched(), - is_idle_task(current), - false)); - return; - } - /* Move the ready-to-invoke callbacks to a local list. */ local_irq_save(flags); RCU_TRACE(trace_rcu_batch_start(rcp->name, 0, rcp->qlen, -1)); |