diff options
Diffstat (limited to 'include/sys/zfs_context.h')
| -rw-r--r-- | include/sys/zfs_context.h | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/include/sys/zfs_context.h b/include/sys/zfs_context.h index 2a749d840..036235e2b 100644 --- a/include/sys/zfs_context.h +++ b/include/sys/zfs_context.h @@ -160,8 +160,18 @@ extern int aok; /* * DTrace SDT probes have different signatures in userland than they do in - * kernel. If they're being used in kernel code, re-define them out of + * the kernel. If they're being used in kernel code, re-define them out of * existence for their counterparts in libzpool. + * + * Here's an example of how to use the set-error probes in userland: + * zfs$target:::set-error /arg0 == EBUSY/ {stack();} + * + * Here's an example of how to use DTRACE_PROBE probes in userland: + * If there is a probe declared as follows: + * DTRACE_PROBE2(zfs__probe_name, uint64_t, blkid, dnode_t *, dn); + * Then you can use it as follows: + * zfs$target:::probe2 /copyinstr(arg0) == "zfs__probe_name"/ + * {printf("%u %p\n", arg1, arg2);} */ #ifdef DTRACE_PROBE |