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| author | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2017-05-02 08:48:33 -0700 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2017-05-02 09:22:48 -0700 |
| commit | 933dfbd7c437bbbf65caae785dfa105fbfaa8485 (patch) | |
| tree | b9a71f3445203169c7deda78e8ea971f4cba01c0 /kernel/rcu | |
| parent | 4b27f20b40a23f03df682eb1f69e9dc3da7d3b93 (diff) | |
| download | linux-933dfbd7c437bbbf65caae785dfa105fbfaa8485.tar.gz linux-933dfbd7c437bbbf65caae785dfa105fbfaa8485.tar.bz2 linux-933dfbd7c437bbbf65caae785dfa105fbfaa8485.zip | |
rcu: Open-code the rcu_cblist_n_lazy_cbs() function
Because the rcu_cblist_n_lazy_cbs() just samples the ->len_lazy counter,
and because the rcu_cblist structure is quite straightforward, it makes
sense to open-code rcu_cblist_n_lazy_cbs(p) as p->len_lazy, cutting out
a level of indirection. This commit makes this change.
Reported-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'kernel/rcu')
| -rw-r--r-- | kernel/rcu/rcu_segcblist.h | 6 | ||||
| -rw-r--r-- | kernel/rcu/tree.c | 2 | ||||
| -rw-r--r-- | kernel/rcu/tree_plugin.h | 2 | ||||
| -rw-r--r-- | kernel/rcu/tree_trace.c | 2 |
4 files changed, 3 insertions, 9 deletions
diff --git a/kernel/rcu/rcu_segcblist.h b/kernel/rcu/rcu_segcblist.h index 424a6b230921..6e36e36478cd 100644 --- a/kernel/rcu/rcu_segcblist.h +++ b/kernel/rcu/rcu_segcblist.h @@ -22,12 +22,6 @@ #include <linux/rcu_segcblist.h> -/* Return number of lazy callbacks in simple callback list. */ -static inline long rcu_cblist_n_lazy_cbs(struct rcu_cblist *rclp) -{ - return rclp->len_lazy; -} - /* * Account for the fact that a previously dequeued callback turned out * to be marked as lazy. diff --git a/kernel/rcu/tree.c b/kernel/rcu/tree.c index 942d529fccbc..1205c8ad138a 100644 --- a/kernel/rcu/tree.c +++ b/kernel/rcu/tree.c @@ -2634,7 +2634,7 @@ static void rcu_adopt_orphan_cbs(struct rcu_state *rsp, unsigned long flags) /* Do the accounting first. */ rdp->n_cbs_adopted += rsp->orphan_done.len; - if (rcu_cblist_n_lazy_cbs(&rsp->orphan_done) != rsp->orphan_done.len) + if (rsp->orphan_done.len_lazy != rsp->orphan_done.len) rcu_idle_count_callbacks_posted(); rcu_segcblist_insert_count(&rdp->cblist, &rsp->orphan_done); diff --git a/kernel/rcu/tree_plugin.h b/kernel/rcu/tree_plugin.h index 7ebe357df155..c9a48657512a 100644 --- a/kernel/rcu/tree_plugin.h +++ b/kernel/rcu/tree_plugin.h @@ -1935,7 +1935,7 @@ static bool __maybe_unused rcu_nocb_adopt_orphan_cbs(struct rcu_state *rsp, unsigned long flags) { long ql = rsp->orphan_done.len; - long qll = rcu_cblist_n_lazy_cbs(&rsp->orphan_done); + long qll = rsp->orphan_done.len_lazy; /* If this is not a no-CBs CPU, tell the caller to do it the old way. */ if (!rcu_is_nocb_cpu(smp_processor_id())) diff --git a/kernel/rcu/tree_trace.c b/kernel/rcu/tree_trace.c index b7743aa2965f..6cea17a1ea30 100644 --- a/kernel/rcu/tree_trace.c +++ b/kernel/rcu/tree_trace.c @@ -277,7 +277,7 @@ static void print_one_rcu_state(struct seq_file *m, struct rcu_state *rsp) rsp->n_force_qs, rsp->n_force_qs_ngp, rsp->n_force_qs - rsp->n_force_qs_ngp, READ_ONCE(rsp->n_force_qs_lh), - rcu_cblist_n_lazy_cbs(&rsp->orphan_done), + rsp->orphan_done.len_lazy, rsp->orphan_done.len); for (rnp = &rsp->node[0]; rnp - &rsp->node[0] < rcu_num_nodes; rnp++) { if (rnp->level != level) { |