| #!/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 |