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Contents
1
SystemTap overview
1.1
About this guide
1.2
Reasons to use SystemTap
1.3
Event-action language
1.4
Sample SystemTap scripts
1.5
The stap command
1.6
Safety and security
2
Types of SystemTap scripts
2.1
Probe scripts
2.2
Tapset scripts
3
Components of a SystemTap script
3.1
Probe definitions
3.2
Probe aliases
3.3
Variables
3.4
Auxiliary functions
3.5
Embedded C
3.6
Embedded C functions
3.7
Embedded C pragma comments
3.8
Accessing script level global variables
4
Probe points
4.1
General syntax
4.2
Built-in probe point types (DWARF probes)
4.3
Function return probes
4.4
DWARF-less probing
4.5
Userspace probing
4.6
Java probes
4.7
PROCFS probes
4.8
Marker probes
4.9
Tracepoints
4.10
Syscall probes
4.11
Timer probes
4.12
Special probe points
5
Language elements
5.1
Identifiers
5.2
Data types
5.3
Semicolons
5.4
Comments
5.5
Whitespace
5.6
Expressions
5.7
Literals passed in from the stap command line
5.8
Conditional compilation
5.9
Preprocessor macros
6
Statement types
6.1
break and continue
6.2
try/catch
6.3
delete
6.4
EXP (expression)
6.5
for
6.6
foreach
6.7
if
6.8
next
6.9
; (null statement)
6.10
return
6.11
{}
(statement block)
6.12
while
7
Associative arrays
7.1
Examples
7.2
Types of values
7.3
Array capacity
7.4
Array wrapping
7.5
Iteration, foreach
7.6
Deletion
8
Statistics (aggregates)
8.1
The aggregation (
<<<
) operator
8.2
Extraction functions
8.3
Integer extractors
8.4
Histogram extractors
8.5
Deletion
9
Formatted output
9.1
print
9.2
printf
9.3
printd
9.4
printdln
9.5
println
9.6
sprint
9.7
sprintf
10
Tapset-defined functions
11
For Further Reference
Index
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