diff options
Diffstat (limited to 'stap.1')
| -rw-r--r-- | stap.1 | 21 |
1 files changed, 19 insertions, 2 deletions
@@ -209,8 +209,11 @@ instructions, and any auxiliary definitions for use by other embedded code. The other place where embedded code is permitted is as a function body. -.SS BUILT-IN FUNCTIONS - +.SS BUILT-INS +A set of builtin functions and probe aliases are provided by the +scripts installed under the +.IR /usr/share/systemtap/tapset +directory. .SH PROCESSING The translator begins pass 1 by parsing the given input script, @@ -287,6 +290,20 @@ kernel into temporary files, until the user sends an interrupt signal. Finally, it unloads the module, and cleans up. .SH EXAMPLES +To trace entry and exit from a function, use a pair of probes: +.RS +.br +probe kernel.function("foo") { log ("enter") } +probe kernel.function("foo").return { log ("exit") } +.RE + +To list the probeable functions in the kernel, use +.RS +.br +stap -p2 -e 'probe kernel.function("*") {}' +.RE + + .SH SAFETY AND SECURITY Systemtap is an administrative tool at this time. It exposes kernel |