1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _FS_CEPH_MDS_METRIC_H
3 #define _FS_CEPH_MDS_METRIC_H
4
5 #include <linux/types.h>
6 #include <linux/percpu_counter.h>
7 #include <linux/ktime.h>
8
9 extern bool disable_send_metrics;
10
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,
17 CLIENT_METRIC_TYPE_OPENED_FILES,
18 CLIENT_METRIC_TYPE_PINNED_ICAPS,
19 CLIENT_METRIC_TYPE_OPENED_INODES,
20 CLIENT_METRIC_TYPE_READ_IO_SIZES,
21 CLIENT_METRIC_TYPE_WRITE_IO_SIZES,
22
23 CLIENT_METRIC_TYPE_MAX = CLIENT_METRIC_TYPE_WRITE_IO_SIZES,
24 };
25
26 /*
27 * This will always have the highest metric bit value
28 * as the last element of the array.
29 */
30 #define CEPHFS_METRIC_SPEC_CLIENT_SUPPORTED { \
31 CLIENT_METRIC_TYPE_CAP_INFO, \
32 CLIENT_METRIC_TYPE_READ_LATENCY, \
33 CLIENT_METRIC_TYPE_WRITE_LATENCY, \
34 CLIENT_METRIC_TYPE_METADATA_LATENCY, \
35 CLIENT_METRIC_TYPE_DENTRY_LEASE, \
36 CLIENT_METRIC_TYPE_OPENED_FILES, \
37 CLIENT_METRIC_TYPE_PINNED_ICAPS, \
38 CLIENT_METRIC_TYPE_OPENED_INODES, \
39 CLIENT_METRIC_TYPE_READ_IO_SIZES, \
40 CLIENT_METRIC_TYPE_WRITE_IO_SIZES, \
41 \
42 CLIENT_METRIC_TYPE_MAX, \
43 }
44
45 struct ceph_metric_header {
46 __le32 type; /* ceph metric type */
47 __u8 ver;
48 __u8 compat;
49 __le32 data_len; /* length of sizeof(hit + mis + total) */
50 } __packed;
51
52 /* metric caps header */
53 struct ceph_metric_cap {
54 struct ceph_metric_header header;
55 __le64 hit;
56 __le64 mis;
57 __le64 total;
58 } __packed;
59
60 /* metric read latency header */
61 struct ceph_metric_read_latency {
62 struct ceph_metric_header header;
63 __le32 sec;
64 __le32 nsec;
65 } __packed;
66
67 /* metric write latency header */
68 struct ceph_metric_write_latency {
69 struct ceph_metric_header header;
70 __le32 sec;
71 __le32 nsec;
72 } __packed;
73
74 /* metric metadata latency header */
75 struct ceph_metric_metadata_latency {
76 struct ceph_metric_header header;
77 __le32 sec;
78 __le32 nsec;
79 } __packed;
80
81 /* metric dentry lease header */
82 struct ceph_metric_dlease {
83 struct ceph_metric_header header;
84 __le64 hit;
85 __le64 mis;
86 __le64 total;
87 } __packed;
88
89 /* metric opened files header */
90 struct ceph_opened_files {
91 struct ceph_metric_header header;
92 __le64 opened_files;
93 __le64 total;
94 } __packed;
95
96 /* metric pinned i_caps header */
97 struct ceph_pinned_icaps {
98 struct ceph_metric_header header;
99 __le64 pinned_icaps;
100 __le64 total;
101 } __packed;
102
103 /* metric opened inodes header */
104 struct ceph_opened_inodes {
105 struct ceph_metric_header header;
106 __le64 opened_inodes;
107 __le64 total;
108 } __packed;
109
110 /* metric read io size header */
111 struct ceph_read_io_size {
112 struct ceph_metric_header header;
113 __le64 total_ops;
114 __le64 total_size;
115 } __packed;
116
117 /* metric write io size header */
118 struct ceph_write_io_size {
119 struct ceph_metric_header header;
120 __le64 total_ops;
121 __le64 total_size;
122 } __packed;
123
124 struct ceph_metric_head {
125 __le32 num; /* the number of metrics that will be sent */
126 } __packed;
127
128 enum metric_type {
129 METRIC_READ,
130 METRIC_WRITE,
131 METRIC_METADATA,
132 METRIC_COPYFROM,
133 METRIC_MAX
134 };
135
136 struct ceph_metric {
137 spinlock_t lock;
138 u64 total;
139 u64 size_sum;
140 u64 size_min;
141 u64 size_max;
142 ktime_t latency_sum;
143 ktime_t latency_sq_sum;
144 ktime_t latency_min;
145 ktime_t latency_max;
146 };
147
148 /* This is the global metrics */
149 struct ceph_client_metric {
150 atomic64_t total_dentries;
151 struct percpu_counter d_lease_hit;
152 struct percpu_counter d_lease_mis;
153
154 atomic64_t total_caps;
155 struct percpu_counter i_caps_hit;
156 struct percpu_counter i_caps_mis;
157
158 struct ceph_metric metric[METRIC_MAX];
159
160 /* The total number of directories and files that are opened */
161 atomic64_t opened_files;
162
163 /* The total number of inodes that have opened files or directories */
164 struct percpu_counter opened_inodes;
165 struct percpu_counter total_inodes;
166
167 struct ceph_mds_session *session;
168 struct delayed_work delayed_work; /* delayed work */
169 };
170
metric_schedule_delayed(struct ceph_client_metric * m)171 static inline void metric_schedule_delayed(struct ceph_client_metric *m)
172 {
173 if (disable_send_metrics)
174 return;
175
176 /* per second */
177 schedule_delayed_work(&m->delayed_work, round_jiffies_relative(HZ));
178 }
179
180 extern int ceph_metric_init(struct ceph_client_metric *m);
181 extern void ceph_metric_destroy(struct ceph_client_metric *m);
182
ceph_update_cap_hit(struct ceph_client_metric * m)183 static inline void ceph_update_cap_hit(struct ceph_client_metric *m)
184 {
185 percpu_counter_inc(&m->i_caps_hit);
186 }
187
ceph_update_cap_mis(struct ceph_client_metric * m)188 static inline void ceph_update_cap_mis(struct ceph_client_metric *m)
189 {
190 percpu_counter_inc(&m->i_caps_mis);
191 }
192
193 extern void ceph_update_metrics(struct ceph_metric *m,
194 ktime_t r_start, ktime_t r_end,
195 unsigned int size, int rc);
196
ceph_update_read_metrics(struct ceph_client_metric * m,ktime_t r_start,ktime_t r_end,unsigned int size,int rc)197 static inline void ceph_update_read_metrics(struct ceph_client_metric *m,
198 ktime_t r_start, ktime_t r_end,
199 unsigned int size, int rc)
200 {
201 ceph_update_metrics(&m->metric[METRIC_READ],
202 r_start, r_end, size, rc);
203 }
ceph_update_write_metrics(struct ceph_client_metric * m,ktime_t r_start,ktime_t r_end,unsigned int size,int rc)204 static inline void ceph_update_write_metrics(struct ceph_client_metric *m,
205 ktime_t r_start, ktime_t r_end,
206 unsigned int size, int rc)
207 {
208 ceph_update_metrics(&m->metric[METRIC_WRITE],
209 r_start, r_end, size, rc);
210 }
ceph_update_metadata_metrics(struct ceph_client_metric * m,ktime_t r_start,ktime_t r_end,int rc)211 static inline void ceph_update_metadata_metrics(struct ceph_client_metric *m,
212 ktime_t r_start, ktime_t r_end,
213 int rc)
214 {
215 ceph_update_metrics(&m->metric[METRIC_METADATA],
216 r_start, r_end, 0, rc);
217 }
ceph_update_copyfrom_metrics(struct ceph_client_metric * m,ktime_t r_start,ktime_t r_end,unsigned int size,int rc)218 static inline void ceph_update_copyfrom_metrics(struct ceph_client_metric *m,
219 ktime_t r_start, ktime_t r_end,
220 unsigned int size, int rc)
221 {
222 ceph_update_metrics(&m->metric[METRIC_COPYFROM],
223 r_start, r_end, size, rc);
224 }
225 #endif /* _FS_CEPH_MDS_METRIC_H */
226