diff options
| author | Adam Leventhal <[email protected]> | 2013-08-28 16:05:48 -0700 |
|---|---|---|
| committer | Brian Behlendorf <[email protected]> | 2013-11-04 10:55:25 -0800 |
| commit | 63fd3c6cfd264cab94dc186fe8cceecac8bc0d50 (patch) | |
| tree | 2b4c580be7c82a4c5160ef99c0020c4752ba9eff /include/sys | |
| parent | c1fabe7961b100a7dfd77cddba1650d9a6580dc0 (diff) | |
Illumos #3582, #3584
3582 zfs_delay() should support a variable resolution
3584 DTrace sdt probes for ZFS txg states
Reviewed by: Matthew Ahrens <[email protected]>
Reviewed by: George Wilson <[email protected]>
Reviewed by: Christopher Siden <[email protected]>
Reviewed by: Dan McDonald <[email protected]>
Reviewed by: Richard Elling <[email protected]>
Approved by: Garrett D'Amore <[email protected]>
References:
https://www.illumos.org/issues/3582
illumos/illumos-gate@0689f76
Ported by: Ned Bass <[email protected]>
Signed-off-by: Brian Behlendorf <[email protected]>
Issue #1775
Diffstat (limited to 'include/sys')
| -rw-r--r-- | include/sys/txg.h | 9 | ||||
| -rw-r--r-- | include/sys/txg_impl.h | 6 | ||||
| -rw-r--r-- | include/sys/zfs_context.h | 2 |
3 files changed, 7 insertions, 10 deletions
diff --git a/include/sys/txg.h b/include/sys/txg.h index b9bbba8be..9e547819b 100644 --- a/include/sys/txg.h +++ b/include/sys/txg.h @@ -74,13 +74,8 @@ extern void txg_rele_to_quiesce(txg_handle_t *txghp); extern void txg_rele_to_sync(txg_handle_t *txghp); extern void txg_register_callbacks(txg_handle_t *txghp, list_t *tx_callbacks); -/* - * Delay the caller by the specified number of ticks or until - * the txg closes (whichever comes first). This is intended - * to be used to throttle writers when the system nears its - * capacity. - */ -extern void txg_delay(struct dsl_pool *dp, uint64_t txg, int ticks); +extern void txg_delay(struct dsl_pool *dp, uint64_t txg, hrtime_t delta, + hrtime_t resolution); /* * Wait until the given transaction group has finished syncing. diff --git a/include/sys/txg_impl.h b/include/sys/txg_impl.h index 5a6d0e19f..8a0977f1f 100644 --- a/include/sys/txg_impl.h +++ b/include/sys/txg_impl.h @@ -70,7 +70,7 @@ struct tx_cpu { kmutex_t tc_open_lock; /* protects tx_open_txg */ kmutex_t tc_lock; /* protects the rest of this struct */ kcondvar_t tc_cv[TXG_SIZE]; - uint64_t tc_count[TXG_SIZE]; + uint64_t tc_count[TXG_SIZE]; /* tx hold count on each txg */ list_t tc_callbacks[TXG_SIZE]; /* commit cb list */ char tc_pad[8]; /* pad to fill 3 cache lines */ }; @@ -87,8 +87,8 @@ struct tx_cpu { * every cpu (see txg_quiesce()). */ typedef struct tx_state { - tx_cpu_t *tx_cpu; /* protects right to enter txg */ - kmutex_t tx_sync_lock; /* protects tx_state_t */ + tx_cpu_t *tx_cpu; /* protects access to tx_open_txg */ + kmutex_t tx_sync_lock; /* protects the rest of this struct */ uint64_t tx_open_txg; /* currently open txg id */ uint64_t tx_quiesced_txg; /* quiesced txg waiting for sync */ uint64_t tx_syncing_txg; /* currently syncing txg id */ diff --git a/include/sys/zfs_context.h b/include/sys/zfs_context.h index dac74386d..adb152f58 100644 --- a/include/sys/zfs_context.h +++ b/include/sys/zfs_context.h @@ -338,6 +338,8 @@ extern void cv_init(kcondvar_t *cv, char *name, int type, void *arg); extern void cv_destroy(kcondvar_t *cv); extern void cv_wait(kcondvar_t *cv, kmutex_t *mp); extern clock_t cv_timedwait(kcondvar_t *cv, kmutex_t *mp, clock_t abstime); +extern clock_t cv_timedwait_hires(kcondvar_t *cvp, kmutex_t *mp, hrtime_t tim, + hrtime_t res, int flag); extern void cv_signal(kcondvar_t *cv); extern void cv_broadcast(kcondvar_t *cv); #define cv_timedwait_interruptible(cv, mp, at) cv_timedwait(cv, mp, at) |