On Fri, May 17, 2019 at 11:51:11AM +0100, Lee Jones wrote: > On Fri, 17 May 2019, Philippe Mazenauer wrote: > > > 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@xxxxxxxxxx> > > --- > > kernel/rcu/tree_exp.h | 2 -- > > 1 file changed, 2 deletions(-) > > Looks reasonable: > > Acked-by: Lee Jones <lee.jones@xxxxxxxxxx> Good eyes! However, Jiang Biao beat you to it. Please see commmit a18e1552af94 ("rcu: Remove unused rdp local from synchronize_rcu_expedited()") in -rcu: git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git branch "dev". Thanx, Paul