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