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authorXiubo Li <xiubli@redhat.com>2020-03-20 06:44:59 +0300
committerIlya Dryomov <idryomov@gmail.com>2020-06-01 14:22:51 +0300
commitf9009efac49c830460f55b9f6c08ee0d76f31b0d (patch)
tree385a58979017657cc29390c7c1aee07e1f61e476 /fs/ceph/metric.h
parent3d77e6a8804abcc0504c904bd6e5cdf3a5cf8162 (diff)
downloadlinux-f9009efac49c830460f55b9f6c08ee0d76f31b0d.tar.xz
ceph: add dentry lease metric support
For dentry leases, only count the hit/miss info triggered from the vfs calls. For the cases like request reply handling and ceph_trim_dentries, ignore them. For now, these are only viewable using debugfs. Future patches will allow the client to send the stats to the MDS. The output looks like: item total miss hit ------------------------------------------------- d_lease 11 7 141 URL: https://tracker.ceph.com/issues/43215 Signed-off-by: Xiubo Li <xiubli@redhat.com> Reviewed-by: Jeff Layton <jlayton@kernel.org> Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Diffstat (limited to 'fs/ceph/metric.h')
-rw-r--r--fs/ceph/metric.h17
1 files changed, 17 insertions, 0 deletions
diff --git a/fs/ceph/metric.h b/fs/ceph/metric.h
new file mode 100644
index 000000000000..da725dacabfe
--- /dev/null
+++ b/fs/ceph/metric.h
@@ -0,0 +1,17 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _FS_CEPH_MDS_METRIC_H
+#define _FS_CEPH_MDS_METRIC_H
+
+#include <linux/types.h>
+#include <linux/percpu_counter.h>
+
+/* This is the global metrics */
+struct ceph_client_metric {
+ atomic64_t total_dentries;
+ struct percpu_counter d_lease_hit;
+ struct percpu_counter d_lease_mis;
+};
+
+extern int ceph_metric_init(struct ceph_client_metric *m);
+extern void ceph_metric_destroy(struct ceph_client_metric *m);
+#endif /* _FS_CEPH_MDS_METRIC_H */