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authorMichael Wang <wangyun@linux.vnet.ibm.com>2012-10-08 16:59:17 +0800
committerPaul E. McKenney <paulmck@linux.vnet.ibm.com>2012-11-08 11:55:42 -0800
commit29c67764f121a0980eb30d0314821ea631e6cfaf (patch)
treeec4acb083683d92c96f3af78028c0048ebb24caf /kernel/rcutree_trace.c
parentc25e557f5d49a7cb94fad473f5ced75b6c7ce094 (diff)
downloadlinaro-lsk-29c67764f121a0980eb30d0314821ea631e6cfaf.tar.gz
rcu: split 'rcuboost' to each flavor
This patch add new 'rcuboost' to each flavor's folder, now we could use: 'cat /debugfs/rcu/rsp/rcuboost' 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>
Diffstat (limited to 'kernel/rcutree_trace.c')
-rw-r--r--kernel/rcutree_trace.c11
1 files changed, 10 insertions, 1 deletions
diff --git a/kernel/rcutree_trace.c b/kernel/rcutree_trace.c
index 65b6265531f..cae417de4b9 100644
--- a/kernel/rcutree_trace.c
+++ b/kernel/rcutree_trace.c
@@ -241,7 +241,7 @@ static const struct file_operations rcu_node_boost_fops = {
.owner = THIS_MODULE,
.open = rcu_node_boost_open,
.read = seq_read,
- .llseek = seq_lseek,
+ .llseek = no_llseek,
.release = single_release,
};
@@ -459,6 +459,15 @@ static int __init rcutree_trace_init(void)
rspdir, rsp, &new_rcubarrier_fops);
if (!retval)
goto free_out;
+
+#ifdef CONFIG_RCU_BOOST
+ if (rsp == &rcu_preempt_state) {
+ retval = debugfs_create_file("rcuboost", 0444,
+ rspdir, NULL, &rcu_node_boost_fops);
+ if (!retval)
+ goto free_out;
+ }
+#endif
}
retval = debugfs_create_file("rcubarrier", 0444, rcudir,