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selftests: kprobe: Choose an always-defined function to probe

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do_fork() is no longer defined on x86, so probe _do_fork() instead.

Fixes: 3033f14ab78c ("clone: support passing tls argument via C ...")
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
This commit is contained in:
Ben Hutchings 2015-11-02 12:22:07 +00:00 committed by Shuah Khan
parent 55f4d731c5
commit c28628b867
5 changed files with 11 additions and 11 deletions
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2
tools/testing/selftests/ftrace/test.d/kprobe/add_and_remove.tc
View File

@ -5,7 +5,7 @@
echo 0 > events/enable
echo > kprobe_events
echo p:myevent do_fork > kprobe_events
echo p:myevent _do_fork > kprobe_events
grep myevent kprobe_events
test -d events/kprobes/myevent
echo > kprobe_events

2
tools/testing/selftests/ftrace/test.d/kprobe/busy_check.tc
View File

@ -5,7 +5,7 @@
echo 0 > events/enable
echo > kprobe_events
echo p:myevent do_fork > kprobe_events
echo p:myevent _do_fork > kprobe_events
test -d events/kprobes/myevent
echo 1 > events/kprobes/myevent/enable
echo > kprobe_events && exit 1 # this must fail

2
tools/testing/selftests/ftrace/test.d/kprobe/kprobe_args.tc
View File

@ -5,7 +5,7 @@
echo 0 > events/enable
echo > kprobe_events
echo 'p:testprobe do_fork $stack $stack0 +0($stack)' > kprobe_events
echo 'p:testprobe _do_fork $stack $stack0 +0($stack)' > kprobe_events
grep testprobe kprobe_events
test -d events/kprobes/testprobe
echo 1 > events/kprobes/testprobe/enable

14
tools/testing/selftests/ftrace/test.d/kprobe/kprobe_ftrace.tc
View File

@ -6,31 +6,31 @@ grep function available_tracers || exit_unsupported # this is configurable
# prepare
echo nop > current_tracer
echo do_fork > set_ftrace_filter
echo _do_fork > set_ftrace_filter
echo 0 > events/enable
echo > kprobe_events
echo 'p:testprobe do_fork' > kprobe_events
echo 'p:testprobe _do_fork' > kprobe_events
# kprobe on / ftrace off
echo 1 > events/kprobes/testprobe/enable
echo > trace
( echo "forked")
grep testprobe trace
! grep 'do_fork <-' trace
! grep '_do_fork <-' trace
# kprobe on / ftrace on
echo function > current_tracer
echo > trace
( echo "forked")
grep testprobe trace
grep 'do_fork <-' trace
grep '_do_fork <-' trace
# kprobe off / ftrace on
echo 0 > events/kprobes/testprobe/enable
echo > trace
( echo "forked")
! grep testprobe trace
grep 'do_fork <-' trace
grep '_do_fork <-' trace
# kprobe on / ftrace on
echo 1 > events/kprobes/testprobe/enable
@ -38,14 +38,14 @@ echo function > current_tracer
echo > trace
( echo "forked")
grep testprobe trace
grep 'do_fork <-' trace
grep '_do_fork <-' trace
# kprobe on / ftrace off
echo nop > current_tracer
echo > trace
( echo "forked")
grep testprobe trace
! grep 'do_fork <-' trace
! grep '_do_fork <-' trace
# cleanup
echo nop > current_tracer

2
tools/testing/selftests/ftrace/test.d/kprobe/kretprobe_args.tc
View File

@ -5,7 +5,7 @@
echo 0 > events/enable
echo > kprobe_events
echo 'r:testprobe2 do_fork $retval' > kprobe_events
echo 'r:testprobe2 _do_fork $retval' > kprobe_events
grep testprobe2 kprobe_events
test -d events/kprobes/testprobe2
echo 1 > events/kprobes/testprobe2/enable