1 files changed, 79 insertions, 0 deletions
diff --git a/include/trace/events/mmap_lock.h b/include/trace/events/mmap_lock.h
new file mode 100644
index 000000000000..cf9f9faf8914
--- /dev/null
+++ b/include/trace/events/mmap_lock.h
@@ -0,0 +1,79 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#undef TRACE_SYSTEM
+#define TRACE_SYSTEM mmap_lock
+
+#if !defined(_TRACE_MMAP_LOCK_H) || defined(TRACE_HEADER_MULTI_READ)
+#define _TRACE_MMAP_LOCK_H
+
+#include <linux/memcontrol.h>
+#include <linux/tracepoint.h>
+#include <linux/types.h>
+
+struct mm_struct;
+
+DECLARE_EVENT_CLASS(mmap_lock,
+
+	TP_PROTO(struct mm_struct *mm, bool write),
+
+	TP_ARGS(mm, write),
+
+	TP_STRUCT__entry(
+		__field(struct mm_struct *, mm)
+		__field(u64, memcg_id)
+		__field(bool, write)
+	),
+
+	TP_fast_assign(
+		__entry->mm = mm;
+		__entry->memcg_id = cgroup_id_from_mm(mm);
+		__entry->write = write;
+	),
+
+	TP_printk(
+		"mm=%p memcg_id=%llu write=%s",
+		__entry->mm, __entry->memcg_id,
+		__entry->write ? "true" : "false"
+	)
+);
+
+#define DEFINE_MMAP_LOCK_EVENT(name)                                    \
+	DEFINE_EVENT(mmap_lock, name,                                   \
+		TP_PROTO(struct mm_struct *mm, bool write),		\
+		TP_ARGS(mm, write))
+
+DEFINE_MMAP_LOCK_EVENT(mmap_lock_start_locking);
+DEFINE_MMAP_LOCK_EVENT(mmap_lock_released);
+
+TRACE_EVENT(mmap_lock_acquire_returned,
+
+	TP_PROTO(struct mm_struct *mm, bool write, bool success),
+
+	TP_ARGS(mm, write, success),
+
+	TP_STRUCT__entry(
+		__field(struct mm_struct *, mm)
+		__field(u64, memcg_id)
+		__field(bool, write)
+		__field(bool, success)
+	),
+
+	TP_fast_assign(
+		__entry->mm = mm;
+		__entry->memcg_id = cgroup_id_from_mm(mm);
+		__entry->write = write;
+		__entry->success = success;
+	),
+
+	TP_printk(
+		"mm=%p memcg_id=%llu write=%s success=%s",
+		__entry->mm,
+		__entry->memcg_id,
+		__entry->write ? "true" : "false",
+		__entry->success ? "true" : "false"
+	)
+);
+
+#endif /* _TRACE_MMAP_LOCK_H */
+
+/* This part must be outside protection */
+#include <trace/define_trace.h>