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-rw-r--r--include/trace/events/vmalloc.h123
1 files changed, 123 insertions, 0 deletions
diff --git a/include/trace/events/vmalloc.h b/include/trace/events/vmalloc.h
new file mode 100644
index 000000000000..ad4e02191f35
--- /dev/null
+++ b/include/trace/events/vmalloc.h
@@ -0,0 +1,123 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#undef TRACE_SYSTEM
+#define TRACE_SYSTEM vmalloc
+
+#if !defined(_TRACE_VMALLOC_H) || defined(TRACE_HEADER_MULTI_READ)
+#define _TRACE_VMALLOC_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)
+);
+
+/**
+ * purge_vmap_area_lazy - called when vmap areas were lazily freed
+ * @start: purging start address
+ * @end: purging end address
+ * @npurged: numbed of purged vmap areas
+ *
+ * This event is used for a debug purpose. It gives some
+ * indication about start:end range and how many objects
+ * are released.
+ */
+TRACE_EVENT(purge_vmap_area_lazy,
+
+ TP_PROTO(unsigned long start, unsigned long end,
+ unsigned int npurged),
+
+ TP_ARGS(start, end, npurged),
+
+ TP_STRUCT__entry(
+ __field(unsigned long, start)
+ __field(unsigned long, end)
+ __field(unsigned int, npurged)
+ ),
+
+ TP_fast_assign(
+ __entry->start = start;
+ __entry->end = end;
+ __entry->npurged = npurged;
+ ),
+
+ TP_printk("start=0x%lx end=0x%lx num_purged=%u",
+ __entry->start, __entry->end, __entry->npurged)
+);
+
+/**
+ * free_vmap_area_noflush - called when a vmap area is freed
+ * @va_start: a start address of VA
+ * @nr_lazy: number of current lazy pages
+ * @nr_lazy_max: number of maximum lazy pages
+ *
+ * This event is used for a debug purpose. It gives some
+ * indication about a VA that is released, number of current
+ * outstanding areas and a maximum allowed threshold before
+ * dropping all of them.
+ */
+TRACE_EVENT(free_vmap_area_noflush,
+
+ TP_PROTO(unsigned long va_start, unsigned long nr_lazy,
+ unsigned long nr_lazy_max),
+
+ TP_ARGS(va_start, nr_lazy, nr_lazy_max),
+
+ TP_STRUCT__entry(
+ __field(unsigned long, va_start)
+ __field(unsigned long, nr_lazy)
+ __field(unsigned long, nr_lazy_max)
+ ),
+
+ TP_fast_assign(
+ __entry->va_start = va_start;
+ __entry->nr_lazy = nr_lazy;
+ __entry->nr_lazy_max = nr_lazy_max;
+ ),
+
+ TP_printk("va_start=0x%lx nr_lazy=%lu nr_lazy_max=%lu",
+ __entry->va_start, __entry->nr_lazy, __entry->nr_lazy_max)
+);
+
+#endif /* _TRACE_VMALLOC_H */
+
+/* This part must be outside protection */
+#include <trace/define_trace.h>