2 files changed, 55 insertions, 8 deletions

diff --git a/include/trace/events/kmem.h b/include/trace/events/kmem.h
index 69e8bb8963db..ad7e642bd497 100644
--- a/include/trace/events/kmem.h
+++ b/include/trace/events/kmem.h
@@ -316,6 +316,53 @@ TRACE_EVENT(mm_page_alloc_extfrag,
 		__entry->change_ownership)
 );
 
+/*
+ * Required for uniquely and securely identifying mm in rss_stat tracepoint.
+ */
+#ifndef __PTR_TO_HASHVAL
+static unsigned int __maybe_unused mm_ptr_to_hash(const void *ptr)
+{
+	int ret;
+	unsigned long hashval;
+
+	ret = ptr_to_hashval(ptr, &hashval);
+	if (ret)
+		return 0;
+
+	/* The hashed value is only 32-bit */
+	return (unsigned int)hashval;
+}
+#define __PTR_TO_HASHVAL
+#endif
+
+TRACE_EVENT(rss_stat,
+
+	TP_PROTO(struct mm_struct *mm,
+		int member,
+		long count),
+
+	TP_ARGS(mm, member, count),
+
+	TP_STRUCT__entry(
+		__field(unsigned int, mm_id)
+		__field(unsigned int, curr)
+		__field(int, member)
+		__field(long, size)
+	),
+
+	TP_fast_assign(
+		__entry->mm_id = mm_ptr_to_hash(mm);
+		__entry->curr = !!(current->mm == mm);
+		__entry->member = member;
+		__entry->size = (count << PAGE_SHIFT);
+	),
+
+	TP_printk("mm_id=%u curr=%d member=%d size=%ldB",
+		__entry->mm_id,
+		__entry->curr,
+		__entry->member,
+		__entry->size)
+	);
 #endif /* _TRACE_KMEM_H */
 
 /* This part must be outside protection */
diff --git a/include/trace/events/timer.h b/include/trace/events/timer.h
index 295517f109d7..19abb6c3eb73 100644
--- a/include/trace/events/timer.h
+++ b/include/trace/events/timer.h
@@ -303,7 +303,7 @@ DEFINE_EVENT(hrtimer_class, hrtimer_cancel,
  */
 TRACE_EVENT(itimer_state,
 
-	TP_PROTO(int which, const struct itimerval *const value,
+	TP_PROTO(int which, const struct itimerspec64 *const value,
 		 unsigned long long expires),
 
 	TP_ARGS(which, value, expires),
@@ -312,24 +312,24 @@ TRACE_EVENT(itimer_state,
 		__field(	int,			which		)
 		__field(	unsigned long long,	expires		)
 		__field(	long,			value_sec	)
-		__field(	long,			value_usec	)
+		__field(	long,			value_nsec	)
 		__field(	long,			interval_sec	)
-		__field(	long,			interval_usec	)
+		__field(	long,			interval_nsec	)
 	),
 
 	TP_fast_assign(
 		__entry->which		= which;
 		__entry->expires	= expires;
 		__entry->value_sec	= value->it_value.tv_sec;
-		__entry->value_usec	= value->it_value.tv_usec;
+		__entry->value_nsec	= value->it_value.tv_nsec;
 		__entry->interval_sec	= value->it_interval.tv_sec;
-		__entry->interval_usec	= value->it_interval.tv_usec;
+		__entry->interval_nsec	= value->it_interval.tv_nsec;
 	),
 
-	TP_printk("which=%d expires=%llu it_value=%ld.%ld it_interval=%ld.%ld",
+	TP_printk("which=%d expires=%llu it_value=%ld.%06ld it_interval=%ld.%06ld",
 		  __entry->which, __entry->expires,
-		  __entry->value_sec, __entry->value_usec,
-		  __entry->interval_sec, __entry->interval_usec)
+		  __entry->value_sec, __entry->value_nsec / NSEC_PER_USEC,
+		  __entry->interval_sec, __entry->interval_nsec / NSEC_PER_USEC)
 );
 
 /**