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rcu: Remove rsp parameter from print_cpu_stall_info()

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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
print_cpu_stall_info().

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 6dbfdc1409
commit b21ebed951
3 changed files with 6 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
kernel/rcu/tree.c
View File

@ -1342,7 +1342,7 @@ static void print_other_cpu_stall(unsigned long gp_seq)
if (rnp->qsmask != 0) { if (rnp->qsmask != 0) {
for_each_leaf_node_possible_cpu(rnp, cpu) for_each_leaf_node_possible_cpu(rnp, cpu)
if (rnp->qsmask & leaf_node_cpu_bit(rnp, cpu)) { if (rnp->qsmask & leaf_node_cpu_bit(rnp, cpu)) {
print_cpu_stall_info(rsp, cpu); print_cpu_stall_info(cpu);
ndetected++; ndetected++;
} }
} }
@ -1409,7 +1409,7 @@ static void print_cpu_stall(void)
pr_err("INFO: %s self-detected stall on CPU", rsp->name); pr_err("INFO: %s self-detected stall on CPU", rsp->name);
print_cpu_stall_info_begin(); print_cpu_stall_info_begin();
raw_spin_lock_irqsave_rcu_node(rdp->mynode, flags); raw_spin_lock_irqsave_rcu_node(rdp->mynode, flags);
print_cpu_stall_info(rsp, smp_processor_id()); print_cpu_stall_info(smp_processor_id());
raw_spin_unlock_irqrestore_rcu_node(rdp->mynode, flags); raw_spin_unlock_irqrestore_rcu_node(rdp->mynode, flags);
print_cpu_stall_info_end(); print_cpu_stall_info_end();
for_each_possible_cpu(cpu) for_each_possible_cpu(cpu)

2
kernel/rcu/tree.h
View File

@ -472,7 +472,7 @@ static bool rcu_preempt_has_tasks(struct rcu_node *rnp);
static bool rcu_preempt_need_deferred_qs(struct task_struct *t); static bool rcu_preempt_need_deferred_qs(struct task_struct *t);
static void rcu_preempt_deferred_qs(struct task_struct *t); static void rcu_preempt_deferred_qs(struct task_struct *t);
static void print_cpu_stall_info_begin(void); static void print_cpu_stall_info_begin(void);
static void print_cpu_stall_info(struct rcu_state *rsp, int cpu); static void print_cpu_stall_info(int cpu);
static void print_cpu_stall_info_end(void); static void print_cpu_stall_info_end(void);
static void zero_cpu_stall_ticks(struct rcu_data *rdp); static void zero_cpu_stall_ticks(struct rcu_data *rdp);
static void increment_cpu_stall_ticks(void); static void increment_cpu_stall_ticks(void);

6
kernel/rcu/tree_plugin.h
View File

@ -1771,7 +1771,7 @@ static void print_cpu_stall_info_begin(void)
* *
* Also print out idle and (if CONFIG_RCU_FAST_NO_HZ) idle-entry info. * Also print out idle and (if CONFIG_RCU_FAST_NO_HZ) idle-entry info.
*/ */
static void print_cpu_stall_info(struct rcu_state *rsp, int cpu) static void print_cpu_stall_info(int cpu)
{ {
unsigned long delta; unsigned long delta;
char fast_no_hz[72]; char fast_no_hz[72];
@ -1786,7 +1786,7 @@ static void print_cpu_stall_info(struct rcu_state *rsp, int cpu)
*/ */
touch_nmi_watchdog(); touch_nmi_watchdog();
ticks_value = rcu_seq_ctr(rsp->gp_seq - rdp->gp_seq); ticks_value = rcu_seq_ctr(rcu_state.gp_seq - rdp->gp_seq);
if (ticks_value) { if (ticks_value) {
ticks_title = "GPs behind"; ticks_title = "GPs behind";
} else { } else {
@ -1807,7 +1807,7 @@ static void print_cpu_stall_info(struct rcu_state *rsp, int cpu)
rcu_dynticks_snap(rdtp) & 0xfff, rcu_dynticks_snap(rdtp) & 0xfff,
rdtp->dynticks_nesting, rdtp->dynticks_nmi_nesting, rdtp->dynticks_nesting, rdtp->dynticks_nmi_nesting,
rdp->softirq_snap, kstat_softirqs_cpu(RCU_SOFTIRQ, cpu), rdp->softirq_snap, kstat_softirqs_cpu(RCU_SOFTIRQ, cpu),
READ_ONCE(rsp->n_force_qs) - rsp->n_force_qs_gpstart, READ_ONCE(rcu_state.n_force_qs) - rcu_state.n_force_qs_gpstart,
fast_no_hz); fast_no_hz);
} }