1 files changed, 14 insertions, 0 deletions

diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h
index bd9f55a5958d..57ae485e80fc 100644
--- a/include/linux/perf_event.h
+++ b/include/linux/perf_event.h
@@ -550,6 +550,7 @@ struct perf_guest_info_callbacks {
 #include <linux/irq_work.h>
 #include <linux/static_key.h>
 #include <linux/atomic.h>
+#include <linux/sysfs.h>
 #include <asm/local.h>
 
 #define PERF_MAX_STACK_DEPTH            255
@@ -1291,5 +1292,18 @@ do {									\
         register_cpu_notifier(&fn##_nb);                                \
 } while (0)
 
+
+#define PMU_FORMAT_ATTR(_name, _format)                                 \
+static ssize_t                                                          \
+_name##_show(struct device *dev,                                        \
+                               struct device_attribute *attr,           \
+                               char *page)                              \
+{                                                                       \
+        BUILD_BUG_ON(sizeof(_format) >= PAGE_SIZE);                     \
+        return sprintf(page, _format "\n");                             \
+}                                                                       \
+                                                                        \
+static struct device_attribute format_attr_##_name = __ATTR_RO(_name)
+
 #endif /* __KERNEL__ */
 #endif /* _LINUX_PERF_EVENT_H */