** Description changed:
- systemtap fails with:
+ [Impact]
+
+ Attempting to use systemtap with any timer on wily fails with:
In file included from /usr/share/systemtap/runtime/timer.c:17:0,
- from
/tmp/stapNgYUlz/stap_d73751f21cb6a8e35c1e92f712612cc2_4574_src.c:869:
+ from
/tmp/stapNgYUlz/stap_d73751f21cb6a8e35c1e92f712612cc2_4574_src.c:869:
/usr/share/systemtap/runtime/linux/timer.c: In function ‘_stp_hrtimer_init’:
/usr/share/systemtap/runtime/linux/timer.c:19:2: error: implicit declaration
of function ‘hrtimer_get_res’ [-Werror=implicit-function-declaration]
- hrtimer_get_res (CLOCK_MONOTONIC, &res);
- ^
+ hrtimer_get_res (CLOCK_MONOTONIC, &res);
+ ^
- this requires systemtap commit 86f726b7785a035a2d6bc9ec2642c46621587d23
+ [Test Case]
+
+ on a wily system that's running the wily kernel, with the kernel dbgsym
+ installed, simply create a dummy stap script that uses a timer and try
+ to run it, e.g.:
+
+ $ cat test.stap
+ #!/usr/bin/stap
+
+ probe timer.sec(1) {
+ println("tick")
+ }
+ $ sudo stap test.stap
+
+ the above compilation failure will happen.
+
+ [Regression Potential]
+
+ As the commit only changes the way systemtap uses the kernel timer
+ function, and it already fails now, there is no regression potential.
+
+ [Other Info]
+
+ this requires upstream systemtap commit
+ 86f726b7785a035a2d6bc9ec2642c46621587d23
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https://bugs.launchpad.net/bugs/1547644
Title:
systemtap does not work on wily kernel, hrtimer_get_res
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