diff --git a/tools/perf/tests/attr.c b/tools/perf/tests/attr.c
index aacad82..1389d69 100644
--- a/tools/perf/tests/attr.c
+++ b/tools/perf/tests/attr.c
@@ -44,7 +44,7 @@
 
 #define BUFSIZE 1024
 
-#define WRITE_ASS(str, fmt, data)					\
+#define __WRITE_ASS(str, fmt, data)					\
 do {									\
 	char buf[BUFSIZE];						\
 	size_t size;							\
@@ -58,6 +58,8 @@
 									\
 } while (0)
 
+#define WRITE_ASS(field, fmt) __WRITE_ASS(field, fmt, attr->field)
+
 static int store_event(struct perf_event_attr *attr, pid_t pid, int cpu,
 		       int fd, int group_fd, unsigned long flags)
 {
@@ -81,51 +83,50 @@
 	}
 
 	/* syscall arguments */
-	WRITE_ASS(fd,       "d", fd);
-	WRITE_ASS(group_fd, "d", group_fd);
-	WRITE_ASS(cpu,      "d", cpu);
-	WRITE_ASS(pid,      "d", pid);
-	WRITE_ASS(flags,   "lu", flags);
+	__WRITE_ASS(fd,       "d", fd);
+	__WRITE_ASS(group_fd, "d", group_fd);
+	__WRITE_ASS(cpu,      "d", cpu);
+	__WRITE_ASS(pid,      "d", pid);
+	__WRITE_ASS(flags,   "lu", flags);
 
 	/* struct perf_event_attr */
-	WRITE_ASS(type,   PRIu32,  attr->type);
-	WRITE_ASS(size,   PRIu32,  attr->size);
-	WRITE_ASS(config,  "llu",  attr->config);
-	WRITE_ASS(sample_period, "llu", attr->sample_period);
-	WRITE_ASS(sample_type,   "llu", attr->sample_type);
-	WRITE_ASS(read_format,   "llu", attr->read_format);
-	WRITE_ASS(disabled,       "d", attr->disabled);
-	WRITE_ASS(inherit,        "d", attr->inherit);
-	WRITE_ASS(pinned,         "d", attr->pinned);
-	WRITE_ASS(exclusive,      "d", attr->exclusive);
-	WRITE_ASS(exclude_user,   "d", attr->exclude_user);
-	WRITE_ASS(exclude_kernel, "d", attr->exclude_kernel);
-	WRITE_ASS(exclude_hv,     "d", attr->exclude_hv);
-	WRITE_ASS(exclude_idle,   "d", attr->exclude_idle);
-	WRITE_ASS(mmap,           "d", attr->mmap);
-	WRITE_ASS(comm,           "d", attr->comm);
-	WRITE_ASS(freq,           "d", attr->freq);
-	WRITE_ASS(inherit_stat,   "d", attr->inherit_stat);
-	WRITE_ASS(enable_on_exec, "d", attr->enable_on_exec);
-	WRITE_ASS(task,           "d", attr->task);
-	WRITE_ASS(watermask,      "d", attr->watermark);
-	WRITE_ASS(precise_ip,     "d", attr->precise_ip);
-	WRITE_ASS(mmap_data,      "d", attr->mmap_data);
-	WRITE_ASS(sample_id_all,  "d", attr->sample_id_all);
-	WRITE_ASS(exclude_host,   "d", attr->exclude_host);
-	WRITE_ASS(exclude_guest,  "d", attr->exclude_guest);
-	WRITE_ASS(exclude_callchain_kernel, "d",
-		  attr->exclude_callchain_kernel);
-	WRITE_ASS(exclude_callchain_user, "d",
-		  attr->exclude_callchain_user);
-	WRITE_ASS(wakeup_events, PRIu32, attr->wakeup_events);
-	WRITE_ASS(bp_type, PRIu32, attr->bp_type);
-	WRITE_ASS(config1, "llu", attr->config1);
-	WRITE_ASS(config2, "llu", attr->config2);
-	WRITE_ASS(branch_sample_type, "llu", attr->branch_sample_type);
-	WRITE_ASS(sample_regs_user,   "llu", attr->sample_regs_user);
-	WRITE_ASS(sample_stack_user,  PRIu32, attr->sample_stack_user);
-	WRITE_ASS(optional, "d", 0);
+	WRITE_ASS(type,   PRIu32);
+	WRITE_ASS(size,   PRIu32);
+	WRITE_ASS(config,  "llu");
+	WRITE_ASS(sample_period, "llu");
+	WRITE_ASS(sample_type,   "llu");
+	WRITE_ASS(read_format,   "llu");
+	WRITE_ASS(disabled,       "d");
+	WRITE_ASS(inherit,        "d");
+	WRITE_ASS(pinned,         "d");
+	WRITE_ASS(exclusive,      "d");
+	WRITE_ASS(exclude_user,   "d");
+	WRITE_ASS(exclude_kernel, "d");
+	WRITE_ASS(exclude_hv,     "d");
+	WRITE_ASS(exclude_idle,   "d");
+	WRITE_ASS(mmap,           "d");
+	WRITE_ASS(comm,           "d");
+	WRITE_ASS(freq,           "d");
+	WRITE_ASS(inherit_stat,   "d");
+	WRITE_ASS(enable_on_exec, "d");
+	WRITE_ASS(task,           "d");
+	WRITE_ASS(watermask,      "d");
+	WRITE_ASS(precise_ip,     "d");
+	WRITE_ASS(mmap_data,      "d");
+	WRITE_ASS(sample_id_all,  "d");
+	WRITE_ASS(exclude_host,   "d");
+	WRITE_ASS(exclude_guest,  "d");
+	WRITE_ASS(exclude_callchain_kernel, "d");
+	WRITE_ASS(exclude_callchain_user, "d");
+	WRITE_ASS(wakeup_events, PRIu32);
+	WRITE_ASS(bp_type, PRIu32);
+	WRITE_ASS(config1, "llu");
+	WRITE_ASS(config2, "llu");
+	WRITE_ASS(branch_sample_type, "llu");
+	WRITE_ASS(sample_regs_user,   "llu");
+	WRITE_ASS(sample_stack_user,  PRIu32);
+
+	__WRITE_ASS(optional, "d", 0);
 
 	fclose(file);
 	return 0;