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Richard Yao 546f38433a SET_ERROR should print strings 
When debugging with tracepoints, we see string pointers:

zfs  3017 [006]  8878.728915: zfs:zfs_set__error: ffffffffa0eec3fc:3013:ffffffffa0ebcd60(): error 0x2
        ffffffffa0e1ca43 spa_open_common (/lib/modules/3.12.21-gentoo-r1/extra/zfs/zfs.ko)
        ffffffffa0e1cbe3 spa_open (/lib/modules/3.12.21-gentoo-r1/extra/zfs/zfs.ko)
        ffffffffa0e6f6ef zfs_ioc_stable (/lib/modules/3.12.21-gentoo-r1/extra/zfs/zfs.ko)
        ffffffffa0e6f2a9 zfsdev_ioctl (/lib/modules/3.12.21-gentoo-r1/extra/zfs/zfs.ko)
        ffffffff811909dd do_vfs_ioctl ([kernel.kallsyms])
        ffffffff81190c41 sys_ioctl ([kernel.kallsyms])
        ffffffff8156e2e9 system_call_fastpath ([kernel.kallsyms])
            7ff7d8be69c7 __GI___ioctl (/lib64/libc-2.19.so)
            7ff7d90cac53 lzc_ioctl.constprop.3 (/lib64/libzfs_core.so.1.0.0)
        636f695f637a6c00 [unknown] ([unknown])

Printing the actual strings is more convenient:

zfs  3461 [001] 10599.847692: zfs:zfs_set__error: spa.c:3013:spa_open_common(): error 0x2
        ffffffffa116ba43 spa_open_common (/lib/modules/3.12.21-gentoo-r1/extra/zfs/zfs.ko)
        ffffffffa116bbe3 spa_open (/lib/modules/3.12.21-gentoo-r1/extra/zfs/zfs.ko)
        ffffffffa11be8df zfs_ioc_stable (/lib/modules/3.12.21-gentoo-r1/extra/zfs/zfs.ko)
        ffffffffa11be499 zfsdev_ioctl (/lib/modules/3.12.21-gentoo-r1/extra/zfs/zfs.ko)
        ffffffff811909dd do_vfs_ioctl ([kernel.kallsyms])
        ffffffff81190c41 sys_ioctl ([kernel.kallsyms])
        ffffffff8156e2e9 system_call_fastpath ([kernel.kallsyms])
            7f11b843c9c7 __GI___ioctl (/lib64/libc-2.19.so)
            7f11b8920c53 lzc_ioctl.constprop.3 (/lib64/libzfs_core.so.1.0.0)
        636f695f637a6c00 [unknown] ([unknown])

A few other tracepoints have strings as well, so switch to printing
the actual string values at the same time.

Signed-off-by: Richard Yao <ryao@gentoo.org>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #4212
2016-01-15 15:38:35 -08:00
..
linux Use uio for zvol_{read,write} 2015-12-15 16:21:43 -08:00
sys SET_ERROR should print strings 2016-01-15 15:38:35 -08:00
libnvpair.h Support custom build directories and move includes 2010-09-08 12:38:56 -07:00
libuutil_common.h Support custom build directories and move includes 2010-09-08 12:38:56 -07:00
libuutil_impl.h Support custom build directories and move includes 2010-09-08 12:38:56 -07:00
libuutil.h Support custom build directories and move includes 2010-09-08 12:38:56 -07:00
libzfs_core.h Illumos 5027 - zfs large block support 2015-05-11 12:23:16 -07:00
libzfs_impl.h Illumos 4368, 4369. 2014-07-29 10:55:29 -07:00
libzfs.h Illumos 5960, 5925 2016-01-08 15:08:19 -08:00
Makefile.am Kernel header installation should respect --prefix 2014-10-28 09:37:06 -07:00
zfeature_common.h Illumos 5959 - clean up per-dataset feature count code 2015-12-04 14:20:20 -08:00
zfs_comutil.h Illumos #2882, #2883, #2900 2013-09-04 15:49:00 -07:00
zfs_deleg.h Illumos 4368, 4369. 2014-07-29 10:55:29 -07:00
zfs_fletcher.h Support custom build directories and move includes 2010-09-08 12:38:56 -07:00
zfs_namecheck.h Illumos 4368, 4369. 2014-07-29 10:55:29 -07:00
zfs_prop.h Check the dataset type more rigorously when fetching properties. 2014-05-06 10:41:46 -07:00
zpios-ctl.h Add large block support to zpios(1) benchmark 2015-09-22 09:13:20 -07:00
zpios-internal.h Add large block support to zpios(1) benchmark 2015-09-22 09:13:20 -07:00