lkml.org 
[lkml]   [2019]   [May]   [17]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH] rcu: Remove unused variable
Date
Variable 'rdp' is set but not used in synchronize_rcu_expidited(). The
macro per_cpu_ptr() used to set the value of 'rdp' has no side effect.

../kernel/rcu/tree_exp.h:768:19: warning: variable ‘rdp’ set but not used [-Wunused-but-set-variable]
struct rcu_data *rdp;
^~~

Signed-off-by: Philippe Mazenauer <philippe.mazenauer@outlook.de>
---
kernel/rcu/tree_exp.h | 2 --
1 file changed, 2 deletions(-)

diff --git a/kernel/rcu/tree_exp.h b/kernel/rcu/tree_exp.h
index 9c990df880d1..41f56b6065c6 100644
--- a/kernel/rcu/tree_exp.h
+++ b/kernel/rcu/tree_exp.h
@@ -765,7 +765,6 @@ static int rcu_print_task_exp_stall(struct rcu_node *rnp)
*/
void synchronize_rcu_expedited(void)
{
- struct rcu_data *rdp;
struct rcu_exp_work rew;
struct rcu_node *rnp;
unsigned long s;
@@ -802,7 +801,6 @@ void synchronize_rcu_expedited(void)
}

/* Wait for expedited grace period to complete. */
- rdp = per_cpu_ptr(&rcu_data, raw_smp_processor_id());
rnp = rcu_get_root();
wait_event(rnp->exp_wq[rcu_seq_ctr(s) & 0x3],
sync_exp_work_done(s));
--
2.17.1
\
 
 \ /
  Last update: 2019-05-17 12:41    [W:0.031 / U:3.544 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site