linux-kernel - [PATCH tip/core/rcu 10/52] rcu: Remove rsp parameter from rcu_stall_kick

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Date:   Wed, 29 Aug 2018 15:38:12 -0700
From:   "Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
To:     linux-kernel@...r.kernel.org
Cc:     mingo@...nel.org, jiangshanlai@...il.com, dipankar@...ibm.com,
        akpm@...ux-foundation.org, mathieu.desnoyers@...icios.com,
        josh@...htriplett.org, tglx@...utronix.de, peterz@...radead.org,
        rostedt@...dmis.org, dhowells@...hat.com, edumazet@...gle.com,
        fweisbec@...il.com, oleg@...hat.com, joel@...lfernandes.org,
        "Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
Subject: [PATCH tip/core/rcu 10/52] rcu: Remove rsp parameter from rcu_stall_kick_kthreads()

There now is only one rcu_state structure in a given build of the
Linux kernel, so there is no need to pass it as a parameter to RCU's
functions.  This commit therefore removes the rsp parameter from
rcu_stall_kick_kthreads().

Signed-off-by: Paul E. McKenney <paulmck@...ux.vnet.ibm.com>
---
 kernel/rcu/tree.c | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/kernel/rcu/tree.c b/kernel/rcu/tree.c
index 2741d987e745..0777374f12a3 100644
--- a/kernel/rcu/tree.c
+++ b/kernel/rcu/tree.c
@@ -1289,9 +1289,10 @@ static void rcu_dump_cpu_stacks(void)
  * If too much time has passed in the current grace period, and if
  * so configured, go kick the relevant kthreads.
  */
-static void rcu_stall_kick_kthreads(struct rcu_state *rsp)
+static void rcu_stall_kick_kthreads(void)
 {
 	unsigned long j;
+	struct rcu_state *rsp = &rcu_state;
 
 	if (!rcu_kick_kthreads)
 		return;
@@ -1322,7 +1323,7 @@ static void print_other_cpu_stall(struct rcu_state *rsp, unsigned long gp_seq)
 	long totqlen = 0;
 
 	/* Kick and suppress, if so configured. */
-	rcu_stall_kick_kthreads(rsp);
+	rcu_stall_kick_kthreads();
 	if (rcu_cpu_stall_suppress)
 		return;
 
@@ -1393,7 +1394,7 @@ static void print_cpu_stall(struct rcu_state *rsp)
 	long totqlen = 0;
 
 	/* Kick and suppress, if so configured. */
-	rcu_stall_kick_kthreads(rsp);
+	rcu_stall_kick_kthreads();
 	if (rcu_cpu_stall_suppress)
 		return;
 
@@ -1451,7 +1452,7 @@ static void check_cpu_stall(struct rcu_state *rsp, struct rcu_data *rdp)
 	if ((rcu_cpu_stall_suppress && !rcu_kick_kthreads) ||
 	    !rcu_gp_in_progress())
 		return;
-	rcu_stall_kick_kthreads(rsp);
+	rcu_stall_kick_kthreads();
 	j = jiffies;
 
 	/*
-- 
2.17.1