tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
selftests/ftrace: Add kprobe profile testcase
Add a testcase for testing kprobe_profile interface
which provides per-kprobe event hit/misshit counts.
Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Shuah Khan (Samsung OSG) <shuah@kernel.org>
authored by
Masami Hiramatsu
and committed by
Shuah Khan (Samsung OSG)
32f6e5da
b0898e84
+15
+15
tools/testing/selftests/ftrace/test.d/kprobe/profile.tc
+15
tools/testing/selftests/ftrace/test.d/kprobe/profile.tc
···
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#!/bin/sh
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# SPDX-License-Identifier: GPL-2.0
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# description: Kprobe dynamic event - adding and removing
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[ -f kprobe_events ] || exit_unsupported # this is configurable
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! grep -q 'myevent' kprobe_profile
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echo p:myevent _do_fork > kprobe_events
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grep -q 'myevent[[:space:]]*0[[:space:]]*0$' kprobe_profile
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echo 1 > events/kprobes/myevent/enable
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( echo "forked" )
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grep -q 'myevent[[:space:]]*[[:digit:]]*[[:space:]]*0$' kprobe_profile
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echo 0 > events/kprobes/myevent/enable
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echo > kprobe_events
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! grep -q 'myevent' kprobe_profile