NFSv4/pnfs: Add tracing for the deviceid cache
Add tracepoints to allow debugging of the deviceid cache.
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
diff --git a/fs/nfs/nfs4trace.h b/fs/nfs/nfs4trace.h
index 484c1da..48d761e 100644
--- a/fs/nfs/nfs4trace.h
+++ b/fs/nfs/nfs4trace.h
@@ -2189,6 +2189,81 @@ DEFINE_PNFS_LAYOUT_EVENT(pnfs_mds_fallback_write_done);
DEFINE_PNFS_LAYOUT_EVENT(pnfs_mds_fallback_read_pagelist);
DEFINE_PNFS_LAYOUT_EVENT(pnfs_mds_fallback_write_pagelist);
+DECLARE_EVENT_CLASS(nfs4_deviceid_event,
+ TP_PROTO(
+ const struct nfs_client *clp,
+ const struct nfs4_deviceid *deviceid
+ ),
+
+ TP_ARGS(clp, deviceid),
+
+ TP_STRUCT__entry(
+ __string(dstaddr, clp->cl_hostname)
+ __array(unsigned char, deviceid, NFS4_DEVICEID4_SIZE)
+ ),
+
+ TP_fast_assign(
+ __assign_str(dstaddr, clp->cl_hostname);
+ memcpy(__entry->deviceid, deviceid->data,
+ NFS4_DEVICEID4_SIZE);
+ ),
+
+ TP_printk(
+ "deviceid=%s, dstaddr=%s",
+ __print_hex(__entry->deviceid, NFS4_DEVICEID4_SIZE),
+ __get_str(dstaddr)
+ )
+);
+#define DEFINE_PNFS_DEVICEID_EVENT(name) \
+ DEFINE_EVENT(nfs4_deviceid_event, name, \
+ TP_PROTO(const struct nfs_client *clp, \
+ const struct nfs4_deviceid *deviceid \
+ ), \
+ TP_ARGS(clp, deviceid))
+DEFINE_PNFS_DEVICEID_EVENT(nfs4_deviceid_free);
+
+DECLARE_EVENT_CLASS(nfs4_deviceid_status,
+ TP_PROTO(
+ const struct nfs_server *server,
+ const struct nfs4_deviceid *deviceid,
+ int status
+ ),
+
+ TP_ARGS(server, deviceid, status),
+
+ TP_STRUCT__entry(
+ __field(dev_t, dev)
+ __field(int, status)
+ __string(dstaddr, server->nfs_client->cl_hostname)
+ __array(unsigned char, deviceid, NFS4_DEVICEID4_SIZE)
+ ),
+
+ TP_fast_assign(
+ __entry->dev = server->s_dev;
+ __entry->status = status;
+ __assign_str(dstaddr, server->nfs_client->cl_hostname);
+ memcpy(__entry->deviceid, deviceid->data,
+ NFS4_DEVICEID4_SIZE);
+ ),
+
+ TP_printk(
+ "dev=%02x:%02x: deviceid=%s, dstaddr=%s, status=%d",
+ MAJOR(__entry->dev), MINOR(__entry->dev),
+ __print_hex(__entry->deviceid, NFS4_DEVICEID4_SIZE),
+ __get_str(dstaddr),
+ __entry->status
+ )
+);
+#define DEFINE_PNFS_DEVICEID_STATUS(name) \
+ DEFINE_EVENT(nfs4_deviceid_status, name, \
+ TP_PROTO(const struct nfs_server *server, \
+ const struct nfs4_deviceid *deviceid, \
+ int status \
+ ), \
+ TP_ARGS(server, deviceid, status))
+DEFINE_PNFS_DEVICEID_STATUS(nfs4_getdeviceinfo);
+DEFINE_PNFS_DEVICEID_STATUS(nfs4_find_deviceid);
+
DECLARE_EVENT_CLASS(nfs4_flexfiles_io_event,
TP_PROTO(
const struct nfs_pgio_header *hdr