iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

rcu: Open-code the rcu_cblist_n_lazy_cbs() function

Browse Source 
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>
This commit is contained in:
Paul E. McKenney
2017-05-02 08:48:33 -07:00
parent 4b27f20b40
commit 933dfbd7c4
4 changed files with 3 additions and 9 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
kernel/rcu/tree_plugin.h
View File

@ -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()))