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selftests/ftrace: Make uprobe test more robust against binary name

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Make add_remove_uprobe test case more robust against various real
binary name.
Current add_remove_uprobe.tc test expects the real binary of /bin/sh
is '*/bin/*sh', but it does not work on busybox environment.
Instead of using fixed pattern, use readlink to identify real binary
name.

Link: https://lore.kernel.org/r/173625187633.1383744.2840679071525852811.stgit@devnote2
Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
This commit is contained in:
Masami Hiramatsu (Google) 2025-01-07 21:11:16 +09:00 committed by Shuah Khan
parent 159ca65c42
commit 89ae64384e
1 changed files with 3 additions and 1 deletions
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4
tools/testing/selftests/ftrace/test.d/dynevent/add_remove_uprobe.tc
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@ -6,8 +6,10 @@
echo 0 > events/enable
echo > dynamic_events
REALBIN=`readlink -f /bin/sh`
echo 'cat /proc/$$/maps' | /bin/sh | \
grep "r-xp .*/bin/.*sh$" | \
grep "r-xp .*${REALBIN}$" | \
awk '{printf "p:myevent %s:0x%s\n", $6,$3 }' >> uprobe_events
grep -q myevent uprobe_events