1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _FS_CEPH_MDS_METRIC_H
3 #define _FS_CEPH_MDS_METRIC_H
5 #include <linux/types.h>
6 #include <linux/percpu_counter.h>
7 #include <linux/ktime.h>
9 extern bool disable_send_metrics;
11 enum ceph_metric_type {
12 CLIENT_METRIC_TYPE_CAP_INFO,
13 CLIENT_METRIC_TYPE_READ_LATENCY,
14 CLIENT_METRIC_TYPE_WRITE_LATENCY,
15 CLIENT_METRIC_TYPE_METADATA_LATENCY,
16 CLIENT_METRIC_TYPE_DENTRY_LEASE,
18 CLIENT_METRIC_TYPE_MAX = CLIENT_METRIC_TYPE_DENTRY_LEASE,
22 * This will always have the highest metric bit value
23 * as the last element of the array.
25 #define CEPHFS_METRIC_SPEC_CLIENT_SUPPORTED { \
26 CLIENT_METRIC_TYPE_CAP_INFO, \
27 CLIENT_METRIC_TYPE_READ_LATENCY, \
28 CLIENT_METRIC_TYPE_WRITE_LATENCY, \
29 CLIENT_METRIC_TYPE_METADATA_LATENCY, \
31 CLIENT_METRIC_TYPE_MAX, \
34 /* metric caps header */
35 struct ceph_metric_cap {
36 __le32 type; /* ceph metric type */
41 __le32 data_len; /* length of sizeof(hit + mis + total) */
47 /* metric read latency header */
48 struct ceph_metric_read_latency {
49 __le32 type; /* ceph metric type */
54 __le32 data_len; /* length of sizeof(sec + nsec) */
59 /* metric write latency header */
60 struct ceph_metric_write_latency {
61 __le32 type; /* ceph metric type */
66 __le32 data_len; /* length of sizeof(sec + nsec) */
71 /* metric metadata latency header */
72 struct ceph_metric_metadata_latency {
73 __le32 type; /* ceph metric type */
78 __le32 data_len; /* length of sizeof(sec + nsec) */
83 struct ceph_metric_head {
84 __le32 num; /* the number of metrics that will be sent */
87 /* This is the global metrics */
88 struct ceph_client_metric {
89 atomic64_t total_dentries;
90 struct percpu_counter d_lease_hit;
91 struct percpu_counter d_lease_mis;
93 atomic64_t total_caps;
94 struct percpu_counter i_caps_hit;
95 struct percpu_counter i_caps_mis;
97 spinlock_t read_latency_lock;
99 ktime_t read_latency_sum;
100 ktime_t read_latency_sq_sum;
101 ktime_t read_latency_min;
102 ktime_t read_latency_max;
104 spinlock_t write_latency_lock;
106 ktime_t write_latency_sum;
107 ktime_t write_latency_sq_sum;
108 ktime_t write_latency_min;
109 ktime_t write_latency_max;
111 spinlock_t metadata_latency_lock;
113 ktime_t metadata_latency_sum;
114 ktime_t metadata_latency_sq_sum;
115 ktime_t metadata_latency_min;
116 ktime_t metadata_latency_max;
118 struct ceph_mds_session *session;
119 struct delayed_work delayed_work; /* delayed work */
122 static inline void metric_schedule_delayed(struct ceph_client_metric *m)
124 if (disable_send_metrics)
128 schedule_delayed_work(&m->delayed_work, round_jiffies_relative(HZ));
131 extern int ceph_metric_init(struct ceph_client_metric *m);
132 extern void ceph_metric_destroy(struct ceph_client_metric *m);
134 static inline void ceph_update_cap_hit(struct ceph_client_metric *m)
136 percpu_counter_inc(&m->i_caps_hit);
139 static inline void ceph_update_cap_mis(struct ceph_client_metric *m)
141 percpu_counter_inc(&m->i_caps_mis);
144 extern void ceph_update_read_latency(struct ceph_client_metric *m,
145 ktime_t r_start, ktime_t r_end,
147 extern void ceph_update_write_latency(struct ceph_client_metric *m,
148 ktime_t r_start, ktime_t r_end,
150 extern void ceph_update_metadata_latency(struct ceph_client_metric *m,
151 ktime_t r_start, ktime_t r_end,
153 #endif /* _FS_CEPH_MDS_METRIC_H */