diff options
Diffstat (limited to 'stap.1.in')
| -rw-r--r-- | stap.1.in | 14 |
1 files changed, 13 insertions, 1 deletions
@@ -582,6 +582,10 @@ variables whose names are prefixed with "$". They may be accessed only if the kernel's compiler preserved them despite optimization. This is the same constraint that a debugger user faces when working with optimized code. Some other events have very little context. +See the +.IR stapprobes (3stap) +man pages to see the kinds of context variables available at each kind +of probe point. .PP New probe points may be defined using "aliases". Probe point aliases look similar to probe definitions, but instead of activating a probe @@ -819,7 +823,15 @@ as a pointer to a struct/union named .I type_name and dereference the .I member -value. The optional +value. Further +.IR \->subfield +expressions may be appended to dereference more levels. +.BR +NOTE: +the same dereferencing operator +.IR \-> +is used to refer to both direct containment or pointer indirection. +Systemtap automatically determines which. The optional .I module tells the translator where to look for information about that type. Multiple modules may be specified as a list with |