selftest/livepatch: Only run test-kprobe with CONFIG_KPROBES_ON_FTRACE

JIRA: https://issues.redhat.com/browse/RHEL-114915

commit 59481b8
Author: Song Liu <song@kernel.org>
Date: Tue, 18 Mar 2025 11:15:18 -0700

	CONFIG_KPROBES_ON_FTRACE is required for test-kprobe. Skip test-kprobe
	when CONFIG_KPROBES_ON_FTRACE is not set. Since some kernel may not have
	/proc/config.gz, grep for kprobe_ftrace_ops from /proc/kallsyms to check
	whether CONFIG_KPROBES_ON_FTRACE is enabled.

	Signed-off-by: Song Liu <song@kernel.org>
	Acked-by: Joe Lawrence <joe.lawrence@redhat.com>
	Acked-by: Miroslav Benes <mbenes@suse.cz>
	Link: https://lore.kernel.org/r/20250318181518.1055532-1-song@kernel.org
	[pmladek@suse.com: Call grep with -q option.]
	Reviewed-by: Petr Mladek <pmladek@suse.com>
	Tested-by: Petr Mladek <pmladek@suse.com>
	Signed-off-by: Petr Mladek <pmladek@suse.com>

Signed-off-by: Rado Vrbovsky <rvrbovsk@redhat.com>

Author: emmil

tools/testing/selftests/livepatch/test-kprobe.sh

@@ -5,6 +5,8 @@
 
 . $(dirname $0)/functions.sh
 
+grep -q kprobe_ftrace_ops /proc/kallsyms || skip "test-kprobe requires CONFIG_KPROBES_ON_FTRACE"
+
 MOD_LIVEPATCH=test_klp_livepatch
 MOD_KPROBE=test_klp_kprobe