fs/ceph/metric.h

   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 /* This is the global metrics */
  10 struct ceph_client_metric {
  11         atomic64_t            total_dentries;
  12         struct percpu_counter d_lease_hit;
  13         struct percpu_counter d_lease_mis;
  14
  15         struct percpu_counter i_caps_hit;
  16         struct percpu_counter i_caps_mis;
  17
  18         spinlock_t read_latency_lock;
  19         u64 total_reads;
  20         ktime_t read_latency_sum;
  21         ktime_t read_latency_sq_sum;
  22         ktime_t read_latency_min;
  23         ktime_t read_latency_max;
  24
  25         spinlock_t write_latency_lock;
  26         u64 total_writes;
  27         ktime_t write_latency_sum;
  28         ktime_t write_latency_sq_sum;
  29         ktime_t write_latency_min;
  30         ktime_t write_latency_max;
  31
  32         spinlock_t metadata_latency_lock;
  33         u64 total_metadatas;
  34         ktime_t metadata_latency_sum;
  35         ktime_t metadata_latency_sq_sum;
  36         ktime_t metadata_latency_min;
  37         ktime_t metadata_latency_max;
  38 };
  39
  40 extern int ceph_metric_init(struct ceph_client_metric *m);
  41 extern void ceph_metric_destroy(struct ceph_client_metric *m);
  42
  43 static inline void ceph_update_cap_hit(struct ceph_client_metric *m)
  44 {
  45         percpu_counter_inc(&m->i_caps_hit);
  46 }
  47
  48 static inline void ceph_update_cap_mis(struct ceph_client_metric *m)
  49 {
  50         percpu_counter_inc(&m->i_caps_mis);
  51 }
  52
  53 extern void ceph_update_read_latency(struct ceph_client_metric *m,
  54                                      ktime_t r_start, ktime_t r_end,
  55                                      int rc);
  56 extern void ceph_update_write_latency(struct ceph_client_metric *m,
  57                                       ktime_t r_start, ktime_t r_end,
  58                                       int rc);
  59 extern void ceph_update_metadata_latency(struct ceph_client_metric *m,
  60                                          ktime_t r_start, ktime_t r_end,
  61                                          int rc);
  62 #endif /* _FS_CEPH_MDS_METRIC_H */