| Message ID | 20170622190345.6444-1-naveen.n.rao@linux.vnet.ibm.com (mailing list archive) |
|---|---|
| State | Not Applicable |
| Headers | show |
On Fri, 23 Jun 2017 00:33:45 +0530 "Naveen N. Rao" <naveen.n.rao@linux.vnet.ibm.com> wrote: > On 2017/06/22 06:29PM, Masami Hiramatsu wrote: > > On Thu, 22 Jun 2017 00:20:27 +0530 > > "Naveen N. Rao" <naveen.n.rao@linux.vnet.ibm.com> wrote: > > > > > When we derive event names, convert some expected symbols (such as ':' > > > used to specify module:name and '.' present in some symbols) into > > > underscores so that the event name is not rejected. > > > > Oops, ok, this is my mistake. > > > > Acked-by: Masami Hiramatsu <mhiramat@kernel.org> > > > > This must be marked as bugfix for stable trees. > > > > Could you also add a testcase for this (module name) bug? > > > > MODNAME=`lsmod | head -n 2 | tail -n 1 | cut -f 1 -d " "` > > FUNCNAME=`grep -m 1 "\\[$MODNAME\\]" /proc/kallsyms | xargs | cut -f 3 -d " "` > > > > May gives you a target name :) > > Sure. Here is a test. > > Thanks for the review, > Naveen > > - > [PATCH] selftests/ftrace: Add a test to probe module functions > > Add a kprobes test to ensure that we are able to add a probe on a > module function using 'p <mod>:<func>' format, without having to > specify a probe name. > > Suggested-by: Masami Hiramatsu <mhiramat@kernel.org> > Signed-off-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com> Perfect! :) Acked-by: Masami Hiramatsu <mhiramat@kernel.org> Thanks! > --- > .../testing/selftests/ftrace/test.d/kprobe/probe_module.tc | 14 ++++++++++++++ > 1 file changed, 14 insertions(+) > create mode 100644 tools/testing/selftests/ftrace/test.d/kprobe/probe_module.tc > > diff --git a/tools/testing/selftests/ftrace/test.d/kprobe/probe_module.tc b/tools/testing/selftests/ftrace/test.d/kprobe/probe_module.tc > new file mode 100644 > index 000000000000..ea7657041ba6 > --- /dev/null > +++ b/tools/testing/selftests/ftrace/test.d/kprobe/probe_module.tc > @@ -0,0 +1,14 @@ > +#!/bin/sh > +# description: Kprobe dynamic event - probing module > + > +[ -f kprobe_events ] || exit_unsupported # this is configurable > + > +echo 0 > events/enable > +echo > kprobe_events > +export MOD=`lsmod | head -n 2 | tail -n 1 | cut -f1 -d" "` > +export FUNC=`grep -m 1 ".* t .*\\[$MOD\\]" /proc/kallsyms | xargs | cut -f3 -d" "` > +[ "x" != "x$MOD" -a "y" != "y$FUNC" ] || exit_untested > +echo p $MOD:$FUNC > kprobe_events > +grep $MOD kprobe_events > +echo > kprobe_events > +clear_trace > -- > 2.13.1 >
diff --git a/tools/testing/selftests/ftrace/test.d/kprobe/probe_module.tc b/tools/testing/selftests/ftrace/test.d/kprobe/probe_module.tc new file mode 100644 index 000000000000..ea7657041ba6 --- /dev/null +++ b/tools/testing/selftests/ftrace/test.d/kprobe/probe_module.tc @@ -0,0 +1,14 @@ +#!/bin/sh +# description: Kprobe dynamic event - probing module + +[ -f kprobe_events ] || exit_unsupported # this is configurable + +echo 0 > events/enable +echo > kprobe_events +export MOD=`lsmod | head -n 2 | tail -n 1 | cut -f1 -d" "` +export FUNC=`grep -m 1 ".* t .*\\[$MOD\\]" /proc/kallsyms | xargs | cut -f3 -d" "` +[ "x" != "x$MOD" -a "y" != "y$FUNC" ] || exit_untested +echo p $MOD:$FUNC > kprobe_events +grep $MOD kprobe_events +echo > kprobe_events +clear_trace