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rcu: Remove rsp parameter from rcu_print_detail_task_stall()

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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_print_detail_task_stall().

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
This commit is contained in:
Paul E. McKenney 2018-07-03 17:22:34 -07:00
parent b8bb1f63cf
commit a2887cd85f
3 changed files with 5 additions and 5 deletions
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2
kernel/rcu/tree.c
View File

@ -1360,7 +1360,7 @@ static void print_other_cpu_stall(unsigned long gp_seq)
rcu_dump_cpu_stacks(); rcu_dump_cpu_stacks();
/* Complain about tasks blocking the grace period. */ /* Complain about tasks blocking the grace period. */
rcu_print_detail_task_stall(rsp); rcu_print_detail_task_stall();
} else { } else {
if (rcu_seq_current(&rsp->gp_seq) != gp_seq) { if (rcu_seq_current(&rsp->gp_seq) != gp_seq) {
pr_err("INFO: Stall ended before state dump start\n"); pr_err("INFO: Stall ended before state dump start\n");

2
kernel/rcu/tree.h
View File

@ -452,7 +452,7 @@ static int rcu_preempt_blocked_readers_cgp(struct rcu_node *rnp);
#ifdef CONFIG_HOTPLUG_CPU #ifdef CONFIG_HOTPLUG_CPU
static bool rcu_preempt_has_tasks(struct rcu_node *rnp); static bool rcu_preempt_has_tasks(struct rcu_node *rnp);
#endif /* #ifdef CONFIG_HOTPLUG_CPU */ #endif /* #ifdef CONFIG_HOTPLUG_CPU */
static void rcu_print_detail_task_stall(struct rcu_state *rsp); static void rcu_print_detail_task_stall(void);
static int rcu_print_task_stall(struct rcu_node *rnp); static int rcu_print_task_stall(struct rcu_node *rnp);
static int rcu_print_task_exp_stall(struct rcu_node *rnp); static int rcu_print_task_exp_stall(struct rcu_node *rnp);
static void rcu_preempt_check_blocked_tasks(struct rcu_state *rsp, static void rcu_preempt_check_blocked_tasks(struct rcu_state *rsp,

6
kernel/rcu/tree_plugin.h
View File

@ -683,12 +683,12 @@ static void rcu_print_detail_task_stall_rnp(struct rcu_node *rnp)
* Dump detailed information for all tasks blocking the current RCU * Dump detailed information for all tasks blocking the current RCU
* grace period. * grace period.
*/ */
static void rcu_print_detail_task_stall(struct rcu_state *rsp) static void rcu_print_detail_task_stall(void)
{ {
struct rcu_node *rnp = rcu_get_root(); struct rcu_node *rnp = rcu_get_root();
rcu_print_detail_task_stall_rnp(rnp); rcu_print_detail_task_stall_rnp(rnp);
rcu_for_each_leaf_node(rsp, rnp) rcu_for_each_leaf_node(&rcu_state, rnp)
rcu_print_detail_task_stall_rnp(rnp); rcu_print_detail_task_stall_rnp(rnp);
} }
@ -1005,7 +1005,7 @@ static void rcu_preempt_deferred_qs(struct task_struct *t) { }
* Because preemptible RCU does not exist, we never have to check for * Because preemptible RCU does not exist, we never have to check for
* tasks blocked within RCU read-side critical sections. * tasks blocked within RCU read-side critical sections.
*/ */
static void rcu_print_detail_task_stall(struct rcu_state *rsp) static void rcu_print_detail_task_stall(void)
{ {
} }