From a784d2f76cab28ae77a363185177fc8513d13e19 Mon Sep 17 00:00:00 2001 From: William Cohen Date: Wed, 2 Jul 2008 15:37:30 -0400 Subject: Add functioncallcount.meta and functioncallcount.stp. --- testsuite/systemtap.examples/ChangeLog | 4 ++++ testsuite/systemtap.examples/functioncallcount.meta | 13 +++++++++++++ testsuite/systemtap.examples/functioncallcount.stp | 17 +++++++++++++++++ 3 files changed, 34 insertions(+) create mode 100644 testsuite/systemtap.examples/functioncallcount.meta create mode 100644 testsuite/systemtap.examples/functioncallcount.stp (limited to 'testsuite/systemtap.examples') diff --git a/testsuite/systemtap.examples/ChangeLog b/testsuite/systemtap.examples/ChangeLog index c4d2c355..dcaafe59 100644 --- a/testsuite/systemtap.examples/ChangeLog +++ b/testsuite/systemtap.examples/ChangeLog @@ -1,3 +1,7 @@ +2008-07-02 William Cohen + + * functioncallcount.meta, functioncallcount.stp: New. + 2008-07-02 William Cohen * para-callgraph.stp, para-callgraph.meta: New. diff --git a/testsuite/systemtap.examples/functioncallcount.meta b/testsuite/systemtap.examples/functioncallcount.meta new file mode 100644 index 00000000..4d419528 --- /dev/null +++ b/testsuite/systemtap.examples/functioncallcount.meta @@ -0,0 +1,13 @@ +title: Count Times Functions Called +name: functioncallcount.stp +version: 1.0 +author: anonymous +keywords: profiling functions +subsystem: kernel +status: production +exit: user-controlled +output: sorted-list on-exit +scope: system-wide +description: The functioncallcount.stp script takes one argument, a list of functions to probe. The script will run and count the number of times that each of the functions on the list is called. On exit the script will print a sorted list from most frequently to least frequently called function. +test_check: stap -p4 functioncallcount.stp "*@mm/*.c" +test_installcheck: stap functioncallcount.stp "*@mm/*.c" -c "sleep 1" diff --git a/testsuite/systemtap.examples/functioncallcount.stp b/testsuite/systemtap.examples/functioncallcount.stp new file mode 100644 index 00000000..e393b612 --- /dev/null +++ b/testsuite/systemtap.examples/functioncallcount.stp @@ -0,0 +1,17 @@ +# The following line command will probe all the functions +# in kernel's memory management code: +# +# stap functioncallcount.stp "*@mm/*.c" + +probe kernel.function(@1) { # probe functions listed on commandline + called[probefunc()] <<< 1 # add a count efficiently +} + +global called + +probe end { + foreach (fn in called-) # Sort by call count (in decreasing order) + # (fn+ in called) # Sort by function name + printf("%s %d\n", fn, @count(called[fn])) + exit() +} -- cgit