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 18 CLIENT_METRIC_TYPE_MAX = CLIENT_METRIC_TYPE_DENTRY_LEASE, 19 }; 20 21 /* 22 * This will always have the highest metric bit value 23 * as the last element of the array. 24 */ 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, \ 30 \ 31 CLIENT_METRIC_TYPE_MAX, \ 32 } 33 34 /* metric caps header */ 35 struct ceph_metric_cap { 36 __le32 type; /* ceph metric type */ 37 38 __u8 ver; 39 __u8 compat; 40 41 __le32 data_len; /* length of sizeof(hit + mis + total) */ 42 __le64 hit; 43 __le64 mis; 44 __le64 total; 45 } __packed; 46 47 /* metric read latency header */ 48 struct ceph_metric_read_latency { 49 __le32 type; /* ceph metric type */ 50 51 __u8 ver; 52 __u8 compat; 53 54 __le32 data_len; /* length of sizeof(sec + nsec) */ 55 __le32 sec; 56 __le32 nsec; 57 } __packed; 58 59 /* metric write latency header */ 60 struct ceph_metric_write_latency { 61 __le32 type; /* ceph metric type */ 62 63 __u8 ver; 64 __u8 compat; 65 66 __le32 data_len; /* length of sizeof(sec + nsec) */ 67 __le32 sec; 68 __le32 nsec; 69 } __packed; 70 71 /* metric metadata latency header */ 72 struct ceph_metric_metadata_latency { 73 __le32 type; /* ceph metric type */ 74 75 __u8 ver; 76 __u8 compat; 77 78 __le32 data_len; /* length of sizeof(sec + nsec) */ 79 __le32 sec; 80 __le32 nsec; 81 } __packed; 82 83 struct ceph_metric_head { 84 __le32 num; /* the number of metrics that will be sent */ 85 } __packed; 86 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; 92 93 atomic64_t total_caps; 94 struct percpu_counter i_caps_hit; 95 struct percpu_counter i_caps_mis; 96 97 spinlock_t read_latency_lock; 98 u64 total_reads; 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; 103 104 spinlock_t write_latency_lock; 105 u64 total_writes; 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; 110 111 spinlock_t metadata_latency_lock; 112 u64 total_metadatas; 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; 117 118 /* The total number of directories and files that are opened */ 119 atomic64_t opened_files; 120 121 /* The total number of inodes that have opened files or directories */ 122 struct percpu_counter opened_inodes; 123 struct percpu_counter total_inodes; 124 125 struct ceph_mds_session *session; 126 struct delayed_work delayed_work; /* delayed work */ 127 }; 128 129 static inline void metric_schedule_delayed(struct ceph_client_metric *m) 130 { 131 if (disable_send_metrics) 132 return; 133 134 /* per second */ 135 schedule_delayed_work(&m->delayed_work, round_jiffies_relative(HZ)); 136 } 137 138 extern int ceph_metric_init(struct ceph_client_metric *m); 139 extern void ceph_metric_destroy(struct ceph_client_metric *m); 140 141 static inline void ceph_update_cap_hit(struct ceph_client_metric *m) 142 { 143 percpu_counter_inc(&m->i_caps_hit); 144 } 145 146 static inline void ceph_update_cap_mis(struct ceph_client_metric *m) 147 { 148 percpu_counter_inc(&m->i_caps_mis); 149 } 150 151 extern void ceph_update_read_latency(struct ceph_client_metric *m, 152 ktime_t r_start, ktime_t r_end, 153 int rc); 154 extern void ceph_update_write_latency(struct ceph_client_metric *m, 155 ktime_t r_start, ktime_t r_end, 156 int rc); 157 extern void ceph_update_metadata_latency(struct ceph_client_metric *m, 158 ktime_t r_start, ktime_t r_end, 159 int rc); 160 #endif /* _FS_CEPH_MDS_METRIC_H */ 161