LU-8066 obd: final pieces for sysfs/debugfs support.

[fs/lustre-release.git] / lustre / ptlrpc / lproc_ptlrpc.c

diff --git a/lustre/ptlrpc/lproc_ptlrpc.c b/lustre/ptlrpc/lproc_ptlrpc.c
index 4418f86..ee4e78e 100644 (file)
--- a/lustre/ptlrpc/lproc_ptlrpc.c
+++ b/lustre/ptlrpc/lproc_ptlrpc.c
@@ -1296,6 +1296,30 @@ void ptlrpc_lprocfs_unregister_obd(struct obd_device *obd)
 }
 EXPORT_SYMBOL(ptlrpc_lprocfs_unregister_obd);
 
+ssize_t ping_store(struct kobject *kobj, struct attribute *attr,
+                  const char *buffer, size_t count)
+{
+       struct obd_device *obd = container_of(kobj, struct obd_device,
+                                             obd_kset.kobj);
+       struct ptlrpc_request *req;
+       int rc;
+
+       ENTRY;
+       LPROCFS_CLIMP_CHECK(obd);
+       req = ptlrpc_prep_ping(obd->u.cli.cl_import);
+       LPROCFS_CLIMP_EXIT(obd);
+       if (!req)
+               RETURN(-ENOMEM);
+
+       req->rq_send_state = LUSTRE_IMP_FULL;
+
+       rc = ptlrpc_queue_wait(req);
+       ptlrpc_req_finished(req);
+
+       RETURN(rc >= 0 ? count : rc);
+}
+EXPORT_SYMBOL(ping_store);
+
 ssize_t
 lprocfs_ping_seq_write(struct file *file, const char __user *buffer,
                       size_t count, loff_t *off)