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rcu: Create directory for each flavor of rcu

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This patch will create subdirectory according to each flavor of rcu, the new
structure will be:

	/debugfs/rcu/ -> rsp_0
		      -> rsp_1
		      -> ...

So we can go to '/debugfs/rcu/rsp_0' and get the cpu info of rsp_0 there.
The flavors of RCU are currently rcu_bh, rcu_preempt, and rcu_sched.

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 2012-09-20 08:51:02 +08:00 committed by Paul E. McKenney
parent a30489c522
commit 573bcd40d2
1 changed files with 8 additions and 0 deletions
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8
kernel/rcutree_trace.c
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@ -446,12 +446,20 @@ static struct dentry *rcudir;
static int __init rcutree_trace_init(void)
{
struct rcu_state *rsp;
struct dentry *retval;
struct dentry *rspdir;
rcudir = debugfs_create_dir("rcu", NULL);
if (!rcudir)
goto free_out;
for_each_rcu_flavor(rsp) {
rspdir = debugfs_create_dir(rsp->name, rcudir);
if (!rspdir)
goto free_out;
}
retval = debugfs_create_file("rcubarrier", 0444, rcudir,
NULL, &rcubarrier_fops);
if (!retval)