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Illumos #3582, #3584

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3582 zfs_delay() should support a variable resolution
3584 DTrace sdt probes for ZFS txg states

Reviewed by: Matthew Ahrens <mahrens@delphix.com>
Reviewed by: George Wilson <george.wilson@delphix.com>
Reviewed by: Christopher Siden <christopher.siden@delphix.com>
Reviewed by: Dan McDonald <danmcd@nexenta.com>
Reviewed by: Richard Elling <richard.elling@dey-sys.com>
Approved by: Garrett D'Amore <garrett@damore.org>

References:
    https://www.illumos.org/issues/3582
    illumos/illumos-gate@0689f76

Ported by: Ned Bass <bass6@llnl.gov>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Issue #1775
This commit is contained in:
Adam Leventhal
2013-08-28 16:05:48 -07:00
committed by Brian Behlendorf
parent c1fabe7961
commit 63fd3c6cfd
10 changed files with 87 additions and 33 deletions
Download Patch File Download Diff File Expand all files Collapse all files
include/sys/txg.h
+2 -7
View File
@@ -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.