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Message-Id: <1351616713-26930-10-git-send-email-paulmck@linux.vnet.ibm.com>
Date: Tue, 30 Oct 2012 10:05:09 -0700
From: "Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
To: linux-kernel@...r.kernel.org
Cc: mingo@...e.hu, laijs@...fujitsu.com, dipankar@...ibm.com,
akpm@...ux-foundation.org, mathieu.desnoyers@...ymtl.ca,
josh@...htriplett.org, niv@...ibm.com, tglx@...utronix.de,
peterz@...radead.org, rostedt@...dmis.org, Valdis.Kletnieks@...edu,
dhowells@...hat.com, edumazet@...gle.com, darren@...art.com,
fweisbec@...il.com, sbw@....edu, patches@...aro.org,
Michael Wang <wangyun@...ux.vnet.ibm.com>,
"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
Subject: [PATCH tip/core/rcu 10/14] rcu: split 'rcuboost' to each flavor
From: Michael Wang <wangyun@...ux.vnet.ibm.com>
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@...ux.vnet.ibm.com>
Signed-off-by: Paul E. McKenney <paulmck@...ux.vnet.ibm.com>
---
kernel/rcutree_trace.c | 11 ++++++++++-
1 files changed, 10 insertions(+), 1 deletions(-)
diff --git a/kernel/rcutree_trace.c b/kernel/rcutree_trace.c
index 8b03bfb..b6fd147 100644
--- a/kernel/rcutree_trace.c
+++ b/kernel/rcutree_trace.c
@@ -239,7 +239,7 @@ 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,
};
@@ -456,6 +456,15 @@ 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,
--
1.7.8
--
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