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Date: Sun, 14 Jan 2018 22:50:07 +0900 From: Masami Hiramatsu <mhiramat@...nel.org> To: linux-kselftest@...r.kernel.org, shuah@...nel.org, Steven Rostedt <rostedt@...dmis.org> Cc: mhiramat@...nel.org, linux-kernel@...r.kernel.org, Alex Shi <alex.shi@...aro.org>, Russell King - ARM Linux <linux@...linux.org.uk>, Jon Medhurst <tixy@...aro.org>, linux-arm-kernel@...ts.infradead.org Subject: [RESEND PATCH 1/2] [BUGFIX] selftest: ftrace: Fix to pick text symbols for kprobes Fix to pick text symbols for multiple kprobe testcase. kallsyms shows text symbols with " t " or " T " but current testcase picks all symbols including "t", so it picks data symbols if it includes 't' (e.g. "str"). This fixes it to find symbol lines with " t " or " T " (including spaces). Signed-off-by: Masami Hiramatsu <mhiramat@...nel.org> Reported-by: Russell King <linux@...linux.org.uk> --- .../ftrace/test.d/kprobe/multiple_kprobes.tc | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/tools/testing/selftests/ftrace/test.d/kprobe/multiple_kprobes.tc b/tools/testing/selftests/ftrace/test.d/kprobe/multiple_kprobes.tc index bb16cf91f1b5..e297bd7a2e79 100644 --- a/tools/testing/selftests/ftrace/test.d/kprobe/multiple_kprobes.tc +++ b/tools/testing/selftests/ftrace/test.d/kprobe/multiple_kprobes.tc @@ -12,8 +12,8 @@ case `uname -m` in *) OFFS=0;; esac -echo "Setup up to 256 kprobes" -grep t /proc/kallsyms | cut -f3 -d" " | grep -v .*\\..* | \ +echo "Setup up kprobes on first 256 text symbols" +grep -i " t " /proc/kallsyms | cut -f3 -d" " | grep -v .*\\..* | \ head -n 256 | while read i; do echo p ${i}+${OFFS} ; done > kprobe_events ||: echo 1 > events/kprobes/enable
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