events/vmalloc.h

   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  */
  23 TRACE_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  */
  63 TRACE_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  */
  97 TRACE_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>