diff options
| author | Adam Leventhal <[email protected]> | 2014-09-17 08:53:02 +0200 |
|---|---|---|
| committer | Brian Behlendorf <[email protected]> | 2014-09-22 14:20:25 -0700 |
| commit | 64dbba36794422aaed5177203edd0dd7aee77de7 (patch) | |
| tree | 841e7d95ad687136caace63ee9094cd3660657b3 | |
| parent | cfd3549a532d3f3551ac2bfd7badbfe2617b0e1f (diff) | |
Illumos 5174 - add sdt probe for blocked read in dbuf_read()
5174 add sdt probe for blocked read in dbuf_read()
Reviewed by: Basil Crow <[email protected]>
Reviewed by: Matthew Ahrens <[email protected]>
Reviewed by: Steven Hartland <[email protected]>
Reviewed by: Richard Elling <[email protected]>
Reviewed by: Boris Protopopov <[email protected]>
Reviewed by: Steven Hartland <[email protected]>
Reviewed by: Garrett D'Amore <[email protected]>
Approved by: Robert Mustacchi <[email protected]>
References:
https://www.illumos.org/issues/5174
https://github.com/illumos/illumos-gate/commit/f6164ad
Ported by: Turbo Fredriksson <[email protected]>
Signed-off-by: Brian Behlendorf <[email protected]>
Closes #2710
| -rw-r--r-- | module/zfs/dbuf.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/module/zfs/dbuf.c b/module/zfs/dbuf.c index 7f75e131f..76a8a99ab 100644 --- a/module/zfs/dbuf.c +++ b/module/zfs/dbuf.c @@ -726,6 +726,8 @@ dbuf_read(dmu_buf_impl_t *db, zio_t *zio, uint32_t flags) db->db_state == DB_FILL) { ASSERT(db->db_state == DB_READ || (flags & DB_RF_HAVESTRUCT) == 0); + DTRACE_PROBE2(blocked__read, dmu_buf_impl_t *, + db, zio_t *, zio); cv_wait(&db->db_changed, &db->db_mtx); } if (db->db_state == DB_UNCACHED) |