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mirror_zfs/include/sys
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Ned Bass 8740cf4a2f Add line info and SET_ERROR() to ZFS debug log 
Redefine the SET_ERROR macro in terms of __dprintf() so the error
return codes get logged as both tracepoint events (if tracepoints are
enabled) and as ZFS debug log entries.  This also allows us to use
the same definition of SET_ERROR() in kernel and user space.

Define a new debug flag ZFS_DEBUG_SET_ERROR=512 that may be bitwise
or'd into zfs_flags. Setting this flag enables both dprintf() and
SET_ERROR() messages in the debug log. That is, setting
ZFS_DEBUG_SET_ERROR and ZFS_DEBUG_DPRINTF|ZFS_DEBUG_SET_ERROR are
equivalent (this was done for sake of simplicity). Leaving
ZFS_DEBUG_SET_ERROR unset suppresses the SET_ERROR() messages which
helps avoid cluttering up the logs.

To enable SET_ERROR() logging, run:

  echo 1 >   /sys/module/zfs/parameters/zfs_dbgmsg_enable
  echo 512 > /sys/module/zfs/parameters/zfs_flags

Remove the zfs_set_error_class tracepoints event class since
SET_ERROR() now uses __dprintf(). This sacrifices a bit of
granularity when selecting individual tracepoint events to enable but
it makes the code simpler.

Include file, function, and line number information in debug log
entries.  The information is now added to the message buffer in
__dprintf() and as a result the zfs_dprintf_class tracepoints event
class was changed from a 4 parameter interface to a single parameter.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Ned Bass <bass6@llnl.gov>
Closes #6400
2017-07-25 23:09:48 -07:00
..
crypto OpenZFS 4185 - add new cryptographic checksums to ZFS: SHA-512, Skein, Edon-R 2016-10-03 14:51:15 -07:00
fm OpenZFS 6939 - add sysevents to zfs core for commands 2017-07-12 21:28:13 -07:00
fs Multi-modifier protection (MMP) 2017-07-13 13:54:00 -04:00
sysevent OpenZFS 6939 - add sysevents to zfs core for commands 2017-07-12 21:28:13 -07:00
abd.h OpenZFS 8416 - abd.h is not C++ friendly 2017-06-30 11:11:01 -07:00
arc_impl.h OpenZFS 7968 - multi-threaded spa_sync() 2017-03-20 18:36:00 -07:00
arc.h zfs_arc_num_sublists_per_state should be common to all multilists 2017-02-15 15:49:33 -08:00
avl_impl.h
avl.h Performance optimization of AVL tree comparator functions 2016-08-31 14:35:34 -07:00
blkptr.h OpenZFS 8067 - zdb should be able to dump literal embedded block pointer 2017-07-07 11:28:01 -07:00
bplist.h
bpobj.h
bptree.h
bqueue.h
dbuf.h fix: Shift exponent too large 2016-09-29 15:55:41 -07:00
ddt.h DLPX-44812 integrate EP-220 large memory scalability 2016-11-29 14:34:27 -08:00
dmu_impl.h OpenZFS 7793 - ztest fails assertion in dmu_tx_willuse_space 2017-03-07 09:51:59 -08:00
dmu_objset.h OpenZFS 8199 - multi-threaded dmu_object_alloc() 2017-06-09 09:43:26 -07:00
dmu_send.h DLPX-40252 integrate EP-476 compressed zfs send/receive 2016-09-13 09:58:58 -07:00
dmu_traverse.h
dmu_tx.h OpenZFS 7793 - ztest fails assertion in dmu_tx_willuse_space 2017-03-07 09:51:59 -08:00
dmu_zfetch.h OpenZFS 6322 - ZFS indirect block predictive prefetch 2016-08-30 14:26:55 -07:00
dmu.h Make zvol operations use _by_dnode routines 2017-06-13 09:18:08 -07:00
dnode.h OpenZFS 7968 - multi-threaded spa_sync() 2017-03-20 18:36:00 -07:00
dsl_bookmark.h
dsl_dataset.h OpenZFS 7600 - zfs rollback should pass target snapshot to kernel 2017-07-04 15:29:52 -07:00
dsl_deadlist.h
dsl_deleg.h Add support for user/group dnode accounting & quota 2016-10-07 09:45:13 -07:00
dsl_destroy.h
dsl_dir.h OpenZFS 7793 - ztest fails assertion in dmu_tx_willuse_space 2017-03-07 09:51:59 -08:00
dsl_pool.h Multi-modifier protection (MMP) 2017-07-13 13:54:00 -04:00
dsl_prop.h
dsl_scan.h Implemented zpool scrub pause/resume 2017-07-06 22:16:13 -07:00
dsl_synctask.h
dsl_userhold.h
edonr.h OpenZFS 4185 - add new cryptographic checksums to ZFS: SHA-512, Skein, Edon-R 2016-10-03 14:51:15 -07:00
efi_partition.h Fix spelling 2017-01-03 11:31:18 -06:00
Makefile.am Multi-modifier protection (MMP) 2017-07-13 13:54:00 -04:00
metaslab_impl.h OpenZFS 7613 - ms_freetree[4] is only used in syncing context 2017-01-26 15:27:19 -08:00
metaslab.h OpenZFS 7303 - dynamic metaslab selection 2017-01-12 11:52:56 -08:00
mmp.h Add callback for zfs_multihost_interval 2017-07-25 13:22:20 -04:00
mntent.h
multilist.h OpenZFS 7968 - multi-threaded spa_sync() 2017-03-20 18:36:00 -07:00
nvpair_impl.h
nvpair.h
pathname.h
policy.h
range_tree.h
refcount.h Linux 4.11 compat: avoid refcount_t name conflict 2017-02-28 16:10:18 -08:00
rrwlock.h
sa_impl.h
sa.h Remove unused sa_update_from_cb() 2016-12-01 16:39:06 -07:00
sdt.h Add line info and SET_ERROR() to ZFS debug log 2017-07-25 23:09:48 -07:00
sha2.h OpenZFS 4185 - add new cryptographic checksums to ZFS: SHA-512, Skein, Edon-R 2016-10-03 14:51:15 -07:00
skein.h OpenZFS 4185 - add new cryptographic checksums to ZFS: SHA-512, Skein, Edon-R 2016-10-03 14:51:15 -07:00
spa_boot.h
spa_checksum.h
spa_impl.h Multi-modifier protection (MMP) 2017-07-13 13:54:00 -04:00
spa.h Multi-modifier protection (MMP) 2017-07-13 13:54:00 -04:00
space_map.h
space_reftree.h
sysevent.h OpenZFS 6939 - add sysevents to zfs core for commands 2017-07-12 21:28:13 -07:00
trace_acl.h Fix build-it compilation regression 2017-01-24 08:50:15 -08:00
trace_arc.h Fix build-it compilation regression 2017-01-24 08:50:15 -08:00
trace_common.h
trace_dbgmsg.h Add line info and SET_ERROR() to ZFS debug log 2017-07-25 23:09:48 -07:00
trace_dbuf.h Fix build-it compilation regression 2017-01-24 08:50:15 -08:00
trace_dmu.h OpenZFS 7793 - ztest fails assertion in dmu_tx_willuse_space 2017-03-07 09:51:59 -08:00
trace_dnode.h Fix build-it compilation regression 2017-01-24 08:50:15 -08:00
trace_multilist.h Fix build-it compilation regression 2017-01-24 08:50:15 -08:00
trace_txg.h Fix build-it compilation regression 2017-01-24 08:50:15 -08:00
trace_zil.h OpenZFS 7578 - Fix/improve some aspects of ZIL writing 2017-06-09 09:15:37 -07:00
trace_zio.h Use cstyle -cpP in make cstyle check 2016-12-12 10:46:26 -08:00
trace_zrlock.h Use cstyle -cpP in make cstyle check 2016-12-12 10:46:26 -08:00
trace.h
txg_impl.h Fix spelling 2017-01-03 11:31:18 -06:00
txg.h OpenZFS 8063 - verify that we do not attempt to access inactive txg 2017-05-10 13:52:22 -04:00
u8_textprep_data.h
u8_textprep.h
uberblock_impl.h OpenZFS 8491 - uberblock on-disk padding to reserve space for smoothly merging zpool checkpoint & MMP in ZFS 2017-07-24 13:47:51 -04:00
uberblock.h Multi-modifier protection (MMP) 2017-07-13 13:54:00 -04:00
uio_impl.h
unique.h
uuid.h
vdev_disk.h
vdev_file.h Use a dedicated taskq for vdev_file 2016-12-21 10:47:15 -08:00
vdev_impl.h Multi-modifier protection (MMP) 2017-07-13 13:54:00 -04:00
vdev_raidz_impl.h Use cstyle -cpP in make cstyle check 2016-12-12 10:46:26 -08:00
vdev_raidz.h Use cstyle -cpP in make cstyle check 2016-12-12 10:46:26 -08:00
vdev.h Multi-modifier protection (MMP) 2017-07-13 13:54:00 -04:00
xvattr.h Fix spelling 2017-01-03 11:31:18 -06:00
zap_impl.h OpenZFS 7793 - ztest fails assertion in dmu_tx_willuse_space 2017-03-07 09:51:59 -08:00
zap_leaf.h
zap.h OpenZFS 1300 - filename normalization doesn't work for removes 2017-02-02 14:13:41 -08:00
zfeature.h
zfs_acl.h Rename zfs_sb_t -> zfsvfs_t 2017-03-10 09:51:33 -08:00
zfs_context.h Add line info and SET_ERROR() to ZFS debug log 2017-07-25 23:09:48 -07:00
zfs_ctldir.h Rename zfs_sb_t -> zfsvfs_t 2017-03-10 09:51:33 -08:00
zfs_debug.h Add line info and SET_ERROR() to ZFS debug log 2017-07-25 23:09:48 -07:00
zfs_delay.h
zfs_dir.h Rename zfs_sb_t -> zfsvfs_t 2017-03-10 09:51:33 -08:00
zfs_fuid.h Rename zfs_sb_t -> zfsvfs_t 2017-03-10 09:51:33 -08:00
zfs_ioctl.h Inject zinject(8) a percentage amount of dev errs 2017-06-16 17:21:11 -07:00
zfs_onexit.h
zfs_ratelimit.h Add missing *_destroy/*_fini calls 2017-05-04 19:26:28 -04:00
zfs_rlock.h Rename zfs_sb_t -> zfsvfs_t 2017-03-10 09:51:33 -08:00
zfs_sa.h
zfs_stat.h
zfs_vfsops.h Linux 4.12 compat: super_setup_bdi_name() 2017-05-02 09:46:18 -07:00
zfs_vnops.h Rename zfs_* functions 2017-03-10 09:51:35 -08:00
zfs_znode.h Rename zfs_sb_t -> zfsvfs_t 2017-03-10 09:51:33 -08:00
zil_impl.h OpenZFS 7578 - Fix/improve some aspects of ZIL writing 2017-06-09 09:15:37 -07:00
zil.h OpenZFS 7578 - Fix/improve some aspects of ZIL writing 2017-06-09 09:15:37 -07:00
zio_checksum.h Remove dependency on linear ABD 2017-03-29 12:24:51 -07:00
zio_compress.h DLPX-44812 integrate EP-220 large memory scalability 2016-11-29 14:34:27 -08:00
zio_impl.h Compile zio.h and zio_impl.h mutual include 2016-12-01 16:36:25 -07:00
zio_priority.h
zio.h OpenZFS 7578 - Fix/improve some aspects of ZIL writing 2017-06-09 09:15:37 -07:00
zpl.h Use cstyle -cpP in make cstyle check 2016-12-12 10:46:26 -08:00
zrlock.h OpenZFS 6328 - Fix cstyle errors in zfs codebase 2017-01-12 09:42:11 -08:00
zvol.h Add port of FreeBSD 'volmode' property 2017-07-12 13:05:37 -07:00