From ae3072f460693e85962556bf0529a729c7d97bf6 Mon Sep 17 00:00:00 2001 From: Kiran Prakesh Date: Thu, 1 Oct 2009 22:39:32 +0530 Subject: Scheduler Tapset based on kernel tracepoints This patch adds kernel tracepoints based probes to the scheduler tapset along with the testcase, scheduler-test-tracepoints.stp and an example script, sched_switch.stp. Signed-off-by: Kiran Prakash Signed-off-by: Josh Stone --- testsuite/systemtap.examples/profiling/sched_switch.meta | 14 ++++++++++++++ 1 file changed, 14 insertions(+) create mode 100644 testsuite/systemtap.examples/profiling/sched_switch.meta (limited to 'testsuite/systemtap.examples/profiling/sched_switch.meta') diff --git a/testsuite/systemtap.examples/profiling/sched_switch.meta b/testsuite/systemtap.examples/profiling/sched_switch.meta new file mode 100644 index 00000000..8f1a2858 --- /dev/null +++ b/testsuite/systemtap.examples/profiling/sched_switch.meta @@ -0,0 +1,14 @@ +title: Display the task switches happeningt the scheduler +name: sched_switch.stp +version: 1.0 +author: kiran +keywords: profiling functions +subsystem: kernel +status: production +exit: user-controlled +output: sorted-list on-exit +scope: system-wide +description: The sched_switch.stp script takes two arguments, first argument can be "pid" or "name" to indicate what is being passed as second argument. The script will trace the process based on pid/name and print the scheduler switches happening with the process. If no arguments are passed, it displays all the scheduler switches. This can be used to understand which tasks scheduler the current process being traced, out and when it gets scheduled in again. +test_check: stap -p4 sched_switch.stp +test_installcheck: stap sched_switch.stp -c "sleep 1" + -- cgit