1/* SPDX-License-Identifier: GPL-2.0 */
  2#undef TRACE_SYSTEM
  3#define TRACE_SYSTEM vmalloc
  4
  5#if !defined(_TRACE_VMALLOC_H) || defined(TRACE_HEADER_MULTI_READ)
  6#define _TRACE_VMALLOC_H
  7
  8#include <linux/tracepoint.h>
  9
 10/**
 11 * alloc_vmap_area - called when a new vmap allocation occurs
 12 * @addr:	an allocated address
 13 * @size:	a requested size
 14 * @align:	a requested alignment
 15 * @vstart:	a requested start range
 16 * @vend:	a requested end range
 17 * @failed:	an allocation failed or not
 18 *
 19 * This event is used for a debug purpose, it can give an extra
 20 * information for a developer about how often it occurs and which
 21 * parameters are passed for further validation.
 22 */
 23TRACE_EVENT(alloc_vmap_area,
 24
 25	TP_PROTO(unsigned long addr, unsigned long size, unsigned long align,
 26		unsigned long vstart, unsigned long vend, int failed),
 27
 28	TP_ARGS(addr, size, align, vstart, vend, failed),
 29
 30	TP_STRUCT__entry(
 31		__field(unsigned long, addr)
 32		__field(unsigned long, size)
 33		__field(unsigned long, align)
 34		__field(unsigned long, vstart)
 35		__field(unsigned long, vend)
 36		__field(int, failed)
 37	),
 38
 39	TP_fast_assign(
 40		__entry->addr = addr;
 41		__entry->size = size;
 42		__entry->align = align;
 43		__entry->vstart = vstart;
 44		__entry->vend = vend;
 45		__entry->failed = failed;
 46	),
 47
 48	TP_printk("va_start: %lu size=%lu align=%lu vstart=0x%lx vend=0x%lx failed=%d",
 49		__entry->addr, __entry->size, __entry->align,
 50		__entry->vstart, __entry->vend, __entry->failed)
 51);
 52
 53/**
 54 * purge_vmap_area_lazy - called when vmap areas were lazily freed
 55 * @start:		purging start address
 56 * @end:		purging end address
 57 * @npurged:	numbed of purged vmap areas
 58 *
 59 * This event is used for a debug purpose. It gives some
 60 * indication about start:end range and how many objects
 61 * are released.
 62 */
 63TRACE_EVENT(purge_vmap_area_lazy,
 64
 65	TP_PROTO(unsigned long start, unsigned long end,
 66		unsigned int npurged),
 67
 68	TP_ARGS(start, end, npurged),
 69
 70	TP_STRUCT__entry(
 71		__field(unsigned long, start)
 72		__field(unsigned long, end)
 73		__field(unsigned int, npurged)
 74	),
 75
 76	TP_fast_assign(
 77		__entry->start = start;
 78		__entry->end = end;
 79		__entry->npurged = npurged;
 80	),
 81
 82	TP_printk("start=0x%lx end=0x%lx num_purged=%u",
 83		__entry->start, __entry->end, __entry->npurged)
 84);
 85
 86/**
 87 * free_vmap_area_noflush - called when a vmap area is freed
 88 * @va_start:		a start address of VA
 89 * @nr_lazy:		number of current lazy pages
 90 * @nr_lazy_max:	number of maximum lazy pages
 91 *
 92 * This event is used for a debug purpose. It gives some
 93 * indication about a VA that is released, number of current
 94 * outstanding areas and a maximum allowed threshold before
 95 * dropping all of them.
 96 */
 97TRACE_EVENT(free_vmap_area_noflush,
 98
 99	TP_PROTO(unsigned long va_start, unsigned long nr_lazy,
100		unsigned long nr_lazy_max),
101
102	TP_ARGS(va_start, nr_lazy, nr_lazy_max),
103
104	TP_STRUCT__entry(
105		__field(unsigned long, va_start)
106		__field(unsigned long, nr_lazy)
107		__field(unsigned long, nr_lazy_max)
108	),
109
110	TP_fast_assign(
111		__entry->va_start = va_start;
112		__entry->nr_lazy = nr_lazy;
113		__entry->nr_lazy_max = nr_lazy_max;
114	),
115
116	TP_printk("va_start=0x%lx nr_lazy=%lu nr_lazy_max=%lu",
117		__entry->va_start, __entry->nr_lazy, __entry->nr_lazy_max)
118);
119
120#endif /*  _TRACE_VMALLOC_H */
121
122/* This part must be outside protection */
123#include <trace/define_trace.h>