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| author | Michael Wang <wangyun@linux.vnet.ibm.com> | 2012-10-08 16:59:16 +0800 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2012-11-08 11:55:41 -0800 |
| commit | c25e557f5d49a7cb94fad473f5ced75b6c7ce094 (patch) | |
| tree | f1d63b8bb4a410e69b3a6057c683db2863e9f4ba /kernel/rcutree_trace.c | |
| parent | 42c3533eee88e012e1aa3c4d6d2cc53354130e24 (diff) | |
| download | linux-c25e557f5d49a7cb94fad473f5ced75b6c7ce094.tar.gz linux-c25e557f5d49a7cb94fad473f5ced75b6c7ce094.tar.bz2 linux-c25e557f5d49a7cb94fad473f5ced75b6c7ce094.zip | |
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>
Diffstat (limited to 'kernel/rcutree_trace.c')
| -rw-r--r-- | kernel/rcutree_trace.c | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/kernel/rcutree_trace.c b/kernel/rcutree_trace.c index 3312ed7e411e..65b6265531ff 100644 --- a/kernel/rcutree_trace.c +++ b/kernel/rcutree_trace.c @@ -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, |