perf beauty: Add socket level scnprintf that handles ARCH specific SOL_SOCKET

SOL_SOCKET has a different value according to the architecture, some
have it as 0xffff while all the others have it as 1, so a simple string
array isn't usable, add a scnprintf routine that treats it as a special
case, using the array for other values.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/trace/beauty/beauty.h

@@ -232,6 +232,9 @@ size_t syscall_arg__scnprintf_sockaddr(char *bf, size_t size, struct syscall_arg
 size_t syscall_arg__scnprintf_socket_protocol(char *bf, size_t size, struct syscall_arg *arg);
 #define SCA_SK_PROTO syscall_arg__scnprintf_socket_protocol
 
+size_t syscall_arg__scnprintf_socket_level(char *bf, size_t size, struct syscall_arg *arg);
+#define SCA_SK_LEVEL syscall_arg__scnprintf_socket_level
+
 size_t syscall_arg__scnprintf_statx_flags(char *bf, size_t size, struct syscall_arg *arg);
 #define SCA_STATX_FLAGS syscall_arg__scnprintf_statx_flags
 

tools/perf/trace/beauty/socket.c

@@ -27,3 +27,21 @@ size_t syscall_arg__scnprintf_socket_protocol(char *bf, size_t size, struct sysc
 
 	return syscall_arg__scnprintf_int(bf, size, arg);
 }
+
+static size_t socket__scnprintf_level(int level, char *bf, size_t size, bool show_prefix)
+{
+#if defined(__alpha__) || defined(__hppa__) || defined(__mips__) || defined(__sparc__)
+	const int sol_socket = 0xffff;
+#else
+	const int sol_socket = 1;
+#endif
+	if (level == sol_socket)
+		return scnprintf(bf, size, "%sSOCKET", show_prefix ? "SOL_" : "");
+
+	return strarray__scnprintf(&strarray__socket_level, bf, size, "%d", show_prefix, level);
+}
+
+size_t syscall_arg__scnprintf_socket_level(char *bf, size_t size, struct syscall_arg *arg)
+{
+	return socket__scnprintf_level(arg->val, bf, size, arg->show_string_prefix);
+}