It is for a debug purpose and for validation of passed parameters.
To: Steven Rostedt <rostedt@xxxxxxxxxxx>
Signed-off-by: Uladzislau Rezki (Sony) <urezki@xxxxxxxxx>
---
include/trace/events/vmap.h | 56 +++++++++++++++++++++++++++++++++++++
1 file changed, 56 insertions(+)
create mode 100644 include/trace/events/vmap.h
diff --git a/include/trace/events/vmap.h b/include/trace/events/vmap.h
new file mode 100644
index 000000000000..504870d95a4e
--- /dev/null
+++ b/include/trace/events/vmap.h
@@ -0,0 +1,56 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#undef TRACE_SYSTEM
+#define TRACE_SYSTEM vmap
+
+#if !defined(_TRACE_VMAP_H) || defined(TRACE_HEADER_MULTI_READ)
+#define _TRACE_VMAP_H
+
+#include <linux/tracepoint.h>
+
+/**
+ * alloc_vmap_area - called when a new vmap allocation occurs
+ * @addr: an allocated address
+ * @size: a requested size
+ * @align: a requested alignment
+ * @vstart: a requested start range
+ * @vend: a requested end range
+ * @failed: an allocation failed or not
+ *
+ * This event is used for a debug purpose, it can give an extra
+ * information for a developer about how often it occurs and which
+ * parameters are passed for further validation.
+ */
+TRACE_EVENT(alloc_vmap_area,
+
+ TP_PROTO(unsigned long addr, unsigned long size, unsigned long align,
+ unsigned long vstart, unsigned long vend, int failed),
+
+ TP_ARGS(addr, size, align, vstart, vend, failed),
+
+ TP_STRUCT__entry(
+ __field(unsigned long, addr)
+ __field(unsigned long, size)
+ __field(unsigned long, align)
+ __field(unsigned long, vstart)
+ __field(unsigned long, vend)
+ __field(int, failed)
+ ),
+
+ TP_fast_assign(
+ __entry->addr = addr;
+ __entry->size = size;
+ __entry->align = align;
+ __entry->vstart = vstart;
+ __entry->vend = vend;
+ __entry->failed = failed;
+ ),
+
+ TP_printk("va_start: %lu size=%lu align=%lu vstart=0x%lx vend=0x%lx failed=%d",
+ __entry->addr, __entry->size, __entry->align,
+ __entry->vstart, __entry->vend, __entry->failed)
+);
+
+#endif /* _TRACE_VMAP_H */
+
+/* This part must be outside protection */
+#include <trace/define_trace.h>
--
2.30.2
