Commit 526ed2f8 authored by Ian Rogers's avatar Ian Rogers Committed by Namhyung Kim
Browse files

perf tests kallsyms: Add basic kallsyms test 



Add test that kallsyms finds a well known symbol and fails for
another.

Signed-off-by: default avatarIan Rogers <irogers@google.com>
Signed-off-by: default avatarNamhyung Kim <namhyung@kernel.org>
parent 279385cf

tools/perf/tests/shell/kallsyms.sh

0 → 100755
+56 −0
Original line number Diff line number Diff line 
#!/bin/bash

# perf kallsyms tests

# SPDX-License-Identifier: GPL-2.0



err=0



test_kallsyms() {

	echo "Basic perf kallsyms test"



	# Check if /proc/kallsyms is readable

	if [ ! -r /proc/kallsyms ]; then

		echo "Basic perf kallsyms test [Skipped: /proc/kallsyms not readable]"

		err=2

		return

	fi



	# Use a symbol that is definitely a function and present in all kernels, e.g. schedule

	symbol="schedule"



	# Run perf kallsyms

	# It prints "address symbol_name"

	output=$(perf kallsyms $symbol 2>&1)

	ret=$?



	if [ $ret -ne 0 ] || [ -z "$output" ]; then

		# If empty or failed, it might be due to permissions (kptr_restrict)

		# Check if we can grep the symbol from /proc/kallsyms directly

		if grep -q "$symbol" /proc/kallsyms 2>/dev/null; then

			# If it's in /proc/kallsyms but perf kallsyms returned empty/error,

			# it likely means perf couldn't parse it or access it correctly (e.g. kptr_restrict=2).

			echo "Basic perf kallsyms test [Skipped: $symbol found in /proc/kallsyms but perf kallsyms failed (output: '$output')]"

			err=2

			return

		else

			echo "Basic perf kallsyms test [Skipped: $symbol not found in /proc/kallsyms]"

			err=2

			return

		fi

	fi



	if echo "$output" | grep -q "not found"; then

		echo "Basic perf kallsyms test [Failed: output '$output' does not contain $symbol]"

		err=1

		return

	fi



	if perf kallsyms ErlingHaaland | grep -vq "not found"; then

		echo "Basic perf kallsyms test [Failed: ErlingHaaland found in the output]"

		err=1

		return

	fi

	echo "Basic perf kallsyms test [Success]"

}



test_kallsyms

exit $err