1 #include <sys/atomic.h> 2 #include <sys/zfs_events.h> 3 4 krwlock_t rz_zev_rwlock; 5 volatile boolean_t rz_zev_is_active = B_FALSE; 6 7 void 8 rz_zev_init() 9 { 10 rw_init(&rz_zev_rwlock, NULL, RW_DRIVER, NULL); 11 } 12 13 void 14 rz_zev_fini() 15 { 16 rw_destroy(&rz_zev_rwlock); 17 } 18 19 boolean_t 20 rz_zev_active(void) 21 { 22 return rz_zev_is_active; 23 } 24 25 void 26 rz_zev_set_active(boolean_t active) 27 { 28 rz_zev_is_active = active; 29 } 30 31 struct rz_zev_ops_counters { 32 /* zfsvfs ops */ 33 uint64_t rz_zev_zfs_mount; 34 uint64_t rz_zev_zfs_umount; 35 /* zvol ops */ 36 uint64_t rz_zev_zvol_write; 37 uint64_t rz_zev_zvol_truncate; 38 /* znode ops */ 39 uint64_t rz_zev_znode_close_after_update; 40 uint64_t rz_zev_znode_create; 41 uint64_t rz_zev_znode_remove; 42 uint64_t rz_zev_znode_link; 43 uint64_t rz_zev_znode_symlink; 44 uint64_t rz_zev_znode_rename; 45 uint64_t rz_zev_znode_write; 46 uint64_t rz_zev_znode_truncate; 47 uint64_t rz_zev_znode_setattr; 48 uint64_t rz_zev_znode_acl; 49 /* general statistics */ 50 uint64_t rz_zev_total; 51 } rz_zev_ops_counters = { 52 .rz_zev_zfs_mount = 0, 53 .rz_zev_zfs_umount = 0, 54 .rz_zev_zvol_write = 0, 55 .rz_zev_zvol_truncate = 0, 56 .rz_zev_znode_close_after_update = 0, 57 .rz_zev_znode_create = 0, 58 .rz_zev_znode_remove = 0, 59 .rz_zev_znode_link = 0, 60 .rz_zev_znode_symlink = 0, 61 .rz_zev_znode_rename = 0, 62 .rz_zev_znode_write = 0, 63 .rz_zev_znode_truncate = 0, 64 .rz_zev_znode_setattr = 0, 65 .rz_zev_znode_acl = 0, 66 .rz_zev_total = 0, 67 }; 68 69 static void 70 rz_zev_inc_total_ops_count(void) 71 { 72 atomic_inc_64(&rz_zev_ops_counters.rz_zev_total); 73 DTRACE_PROBE1(rz_zev_ops_counter_total, unit64_t, 74 rz_zev_ops_counters.rz_zev_total); /* non-atomic access */ 75 } 76 77 #define RZ_COUNTER_CB(opname, ...) \ 78 void \ 79 rz_zev_counter_##opname(__VA_ARGS__) \ 80 { \ 81 atomic_inc_64(&rz_zev_ops_counters.rz_zev_##opname); \ 82 DTRACE_PROBE1(rz_zev_ops_counter_##opname, uint64_t, \ 83 rz_zev_ops_counters.rz_zev_##opname); \ 84 rz_zev_inc_total_ops_count(); \ 85 } 86 87 /* zfsvfs */ 88 RZ_COUNTER_CB(zfs_mount, vfs_t *vfs, vnode_t *mpt, char *dataset, 89 boolean_t remount) 90 RZ_COUNTER_CB(zfs_umount, vfs_t *vfs) 91 /* zvol */ 92 RZ_COUNTER_CB(zvol_truncate, char *dataset, objset_t *os, dmu_tx_t *tx, 93 uint64_t off, uint64_t len) 94 RZ_COUNTER_CB(zvol_write, char *dataset, objset_t *os, dmu_tx_t *tx, 95 uint64_t off, uint64_t len) 96 /* znode */ 97 RZ_COUNTER_CB(znode_close_after_update, znode_t *zp) 98 RZ_COUNTER_CB(znode_create, znode_t *dzp, znode_t *zp, 99 dmu_tx_t *tx, char *name, uint64_t txmode) 100 RZ_COUNTER_CB(znode_remove, znode_t *dzp, znode_t *zp, 101 dmu_tx_t *tx, char *name, uint64_t txmode) 102 RZ_COUNTER_CB(znode_link, znode_t *dzp, znode_t *zp, dmu_tx_t *tx, char *name) 103 RZ_COUNTER_CB(znode_symlink, znode_t *dzp, znode_t *zp, 104 dmu_tx_t *tx, char *name, char *link) 105 RZ_COUNTER_CB(znode_rename, znode_t *sdzp, 106 char *sname, znode_t *tdzp, char *tname, znode_t *szp, dmu_tx_t *tx) 107 RZ_COUNTER_CB(znode_write, znode_t *zp, dmu_tx_t *tx, 108 uint64_t off, uint64_t len) 109 RZ_COUNTER_CB(znode_truncate, znode_t *zp, dmu_tx_t *tx, 110 uint64_t off, uint64_t len) 111 RZ_COUNTER_CB(znode_setattr, znode_t *zp, dmu_tx_t *tx) 112 RZ_COUNTER_CB(znode_acl, znode_t *zp, dmu_tx_t *tx) 113 114 rz_zev_callbacks_t rz_zev_counter_callbacks = { 115 /* zfsvfs */ 116 rz_zev_counter_zfs_mount, /* mount */ 117 rz_zev_counter_zfs_umount, /* umount */ 118 /* zvol */ 119 rz_zev_counter_zvol_truncate, /* zvol truncate */ 120 rz_zev_counter_zvol_write, /* zvol write */ 121 /* znode */ 122 rz_zev_counter_znode_close_after_update, /* close */ 123 rz_zev_counter_znode_create, /* create */ 124 rz_zev_counter_znode_remove, /* remove */ 125 rz_zev_counter_znode_link, /* link */ 126 rz_zev_counter_znode_symlink, /* symlink */ 127 rz_zev_counter_znode_rename, /* rename */ 128 rz_zev_counter_znode_write, /* write */ 129 rz_zev_counter_znode_truncate, /* truncate */ 130 rz_zev_counter_znode_setattr, /* setattr */ 131 rz_zev_counter_znode_acl, /* acl */ 132 }; 133 134 /* 135 * Hooks for write operation event callbacks. Will be changed by 136 * a loadable module if event callbacks are desired. 137 */ 138 139 rz_zev_callbacks_t *rz_zev_default_callbacks = &rz_zev_counter_callbacks; 140 rz_zev_callbacks_t *rz_zev_callbacks = &rz_zev_counter_callbacks; 141 142