Author: delphij
Date: Sat Oct 4 07:38:59 2014
New Revision: 272499
URL: https://svnweb.freebsd.org/changeset/base/272499
Log:
5174 add sdt probe for blocked read in dbuf_read()
Reviewed by: Basil Crow <basil.c...@delphix.com>
Reviewed by: Matthew Ahrens <mahr...@delphix.com>
Reviewed by: Steven Hartland <kill...@multiplay.co.uk>
Reviewed by: Richard Elling <richard.ell...@gmail.com>
Reviewed by: Boris Protopopov <bprotopo...@hotmail.com>
Reviewed by: Steven Hartland <kill...@multiplay.co.uk>
Reviewed by: Garrett D'Amore <garr...@damore.org>
Approved by: Robert Mustacchi <r...@joyent.com>
Author: Adam H. Leventhal <a...@delphix.com>
illumos/illumos-gate@f6164ad638e7346c4ae4ba393760a897cf6eb744
Modified:
vendor-sys/illumos/dist/uts/common/fs/zfs/dbuf.c
Modified: vendor-sys/illumos/dist/uts/common/fs/zfs/dbuf.c
==============================================================================
--- vendor-sys/illumos/dist/uts/common/fs/zfs/dbuf.c Sat Oct 4 07:37:17
2014 (r272498)
+++ vendor-sys/illumos/dist/uts/common/fs/zfs/dbuf.c Sat Oct 4 07:38:59
2014 (r272499)
@@ -671,6 +671,8 @@ dbuf_read(dmu_buf_impl_t *db, zio_t *zio
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)
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