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rcu: split 'rcubarrier' to each flavor 

This patch add new 'rcubarrier' to each flavor's folder, now we could use:
	'cat /debugfs/rcu/rsp/rcubarrier'
to get the selected rsp info.

Signed-off-by: Michael Wang <wangyun@linux.vnet.ibm.com>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
This commit is contained in:
Michael Wang 2012-10-08 16:59:16 +08:00 committed by Paul E. McKenney
parent 42c3533eee
commit c25e557f5d
1 changed files with 27 additions and 0 deletions
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27
kernel/rcutree_trace.c
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@ -103,6 +103,28 @@ static const struct file_operations rcubarrier_fops = {
.release = single_release,
};
static int new_show_rcubarrier(struct seq_file *m, void *v)
{
struct rcu_state *rsp = (struct rcu_state *)m->private;
seq_printf(m, "bcc: %d nbd: %lu\n",
atomic_read(&rsp->barrier_cpu_count),
rsp->n_barrier_done);
return 0;
}
static int new_rcubarrier_open(struct inode *inode, struct file *file)
{
return single_open(file, new_show_rcubarrier, inode->i_private);
}
static const struct file_operations new_rcubarrier_fops = {
.owner = THIS_MODULE,
.open = new_rcubarrier_open,
.read = seq_read,
.llseek = no_llseek,
.release = seq_release,
};
#ifdef CONFIG_RCU_BOOST
static char convert_kthread_status(unsigned int kthread_status)
@ -432,6 +454,11 @@ static int __init rcutree_trace_init(void)
rspdir, rsp, &rcu_pending_fops);
if (!retval)
goto free_out;
retval = debugfs_create_file("rcubarrier", 0444,
rspdir, rsp, &new_rcubarrier_fops);
if (!retval)
goto free_out;
}
retval = debugfs_create_file("rcubarrier", 0444, rcudir,