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authorByungchul Park <byungchul.park@lge.com>2018-02-26 14:11:36 +0900
committerPaul E. McKenney <paulmck@linux.vnet.ibm.com>2018-05-15 10:27:00 -0700
commitbe01b4cab118e7a2d9747c71b3bef8f28fdda193 (patch)
tree981d72559e02d7d7a85976a6c0688945e8dd3c75 /kernel/rcu/tree.h
parent60cc43fc888428bb2f18f08997432d426a243338 (diff)
downloadlinux-be01b4cab118e7a2d9747c71b3bef8f28fdda193.tar.bz2
rcu: Inline rcu_preempt_do_callback() into its sole caller
The rcu_preempt_do_callbacks() function was introduced in commit 09223371dea(rcu: Use softirq to address performance regression), where it was necessary to handle kernel builds both containing and not containing RCU-preempt. Since then, various changes (most notably f8b7fc6b51 ("rcu: use softirq instead of kthreads except when RCU_BOOST=y")) have resulted in this function being invoked only from rcu_kthread_do_work(), which is present only in kernels containing RCU-preempt, which in turn means that the rcu_preempt_do_callbacks() function is no longer needed. This commit therefore inlines rcu_preempt_do_callbacks() into its sole remaining caller and also removes the rcu_state_p and rcu_data_p indirection for added clarity. Signed-off-by: Byungchul Park <byungchul.park@lge.com> Reviewed-by: Steven Rostedt (VMware) <rostedt@goodmis.org> [ paulmck: Remove the rcu_state_p and rcu_data_p indirection. ] Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Tested-by: Nicholas Piggin <npiggin@gmail.com>
Diffstat (limited to 'kernel/rcu/tree.h')
-rw-r--r--kernel/rcu/tree.h1
1 files changed, 0 insertions, 1 deletions
diff --git a/kernel/rcu/tree.h b/kernel/rcu/tree.h
index f491ab4f2e8e..3a0dc30100e8 100644
--- a/kernel/rcu/tree.h
+++ b/kernel/rcu/tree.h
@@ -438,7 +438,6 @@ static void rcu_preempt_boost_start_gp(struct rcu_node *rnp);
static void invoke_rcu_callbacks_kthread(void);
static bool rcu_is_callbacks_kthread(void);
#ifdef CONFIG_RCU_BOOST
-static void rcu_preempt_do_callbacks(void);
static int rcu_spawn_one_boost_kthread(struct rcu_state *rsp,
struct rcu_node *rnp);
#endif /* #ifdef CONFIG_RCU_BOOST */