srcu: Drop needless initialization of sdp in srcu_gp_start()

Commit 9c7ef4c30f12 ("srcu: Make Tree SRCU able to operate without
snp_node array") initializes the local variable sdp differently depending
on the srcu's state in srcu_gp_start().  Either way, this initialization
overwrites the value used when sdp is defined.

This commit therefore drops this pointless definition-time initialization.
Although there is no functional change, compiler code generation may
be affected.

Signed-off-by: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>

diff --git a/kernel/rcu/srcutree.c b/kernel/rcu/srcutree.c
index 6dd44e759f1207958d0910070311f0540aff2c1c..50ba70f019dea0996b1ec28e96191eb9e73c98ff 100644 (file)
--- a/kernel/rcu/srcutree.c
+++ b/kernel/rcu/srcutree.c
@@ -620,7 +620,7 @@ EXPORT_SYMBOL_GPL(__srcu_read_unlock);
  */
 static void srcu_gp_start(struct srcu_struct *ssp)
 {
-       struct srcu_data *sdp = this_cpu_ptr(ssp->sda);
+       struct srcu_data *sdp;
        int state;
 
        if (smp_load_acquire(&ssp->srcu_size_state) < SRCU_SIZE_WAIT_BARRIER)