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Diffstat (limited to 'doc/tutorial.tex')
| -rw-r--r-- | doc/tutorial.tex | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/doc/tutorial.tex b/doc/tutorial.tex index 58673467..3a04900b 100644 --- a/doc/tutorial.tex +++ b/doc/tutorial.tex @@ -175,8 +175,10 @@ in a source file, say \verb+net/socket.c+ in the kernel. The systemtap examines the kernel's debugging information to relate object code to source code. It works like a debugger: if you can name or place it, you can probe it. Use -\verb+kernel.function("*@net/socket.c")+ for the function entries, and -\verb+kernel.function("*@net/socket.c").return+ for the exits. Note +\verb+kernel.function("*@net/socket.c").call+ for the function +entries\footnote{Without the {\tt .call} qualifier, inlined function +instances are also probed, but they have no corresponding {\tt .return}.}, +and \verb+kernel.function("*@net/socket.c").return+ for matching exits. Note the use of wildcards in the function name part, and the subsequent \verb+@FILENAME+ part. You can also put wildcards into the file name, and even add a colon (\verb+:+) and a line number, if you want to |