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This event is used in order to validate/debug a start address of freed VA, number of currently outstanding and maximum allowed areas. Link: https://lkml.kernel.org/r/20221018181053.434508-4-urezki@gmail.com Signed-off-by: Uladzislau Rezki (Sony) <urezki@gmail.com> Reviewed-by: Steven Rostedt (Google) <rostedt@goodmis.org> Reviewed-by: Christoph Hellwig <hch@lst.de> Cc: Matthew Wilcox (Oracle) <willy@infradead.org> Cc: Nicholas Piggin <npiggin@gmail.com> Cc: Oleksiy Avramchenko <oleksiy.avramchenko@sony.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
124 lines
3.2 KiB
C
124 lines
3.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#undef TRACE_SYSTEM
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#define TRACE_SYSTEM vmalloc
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#if !defined(_TRACE_VMALLOC_H) || defined(TRACE_HEADER_MULTI_READ)
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#define _TRACE_VMALLOC_H
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#include <linux/tracepoint.h>
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/**
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* alloc_vmap_area - called when a new vmap allocation occurs
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* @addr: an allocated address
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* @size: a requested size
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* @align: a requested alignment
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* @vstart: a requested start range
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* @vend: a requested end range
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* @failed: an allocation failed or not
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*
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* This event is used for a debug purpose, it can give an extra
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* information for a developer about how often it occurs and which
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* parameters are passed for further validation.
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*/
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TRACE_EVENT(alloc_vmap_area,
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TP_PROTO(unsigned long addr, unsigned long size, unsigned long align,
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unsigned long vstart, unsigned long vend, int failed),
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TP_ARGS(addr, size, align, vstart, vend, failed),
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TP_STRUCT__entry(
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__field(unsigned long, addr)
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__field(unsigned long, size)
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__field(unsigned long, align)
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__field(unsigned long, vstart)
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__field(unsigned long, vend)
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__field(int, failed)
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),
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TP_fast_assign(
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__entry->addr = addr;
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__entry->size = size;
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__entry->align = align;
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__entry->vstart = vstart;
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__entry->vend = vend;
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__entry->failed = failed;
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),
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TP_printk("va_start: %lu size=%lu align=%lu vstart=0x%lx vend=0x%lx failed=%d",
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__entry->addr, __entry->size, __entry->align,
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__entry->vstart, __entry->vend, __entry->failed)
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);
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/**
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* purge_vmap_area_lazy - called when vmap areas were lazily freed
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* @start: purging start address
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* @end: purging end address
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* @npurged: numbed of purged vmap areas
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*
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* This event is used for a debug purpose. It gives some
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* indication about start:end range and how many objects
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* are released.
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*/
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TRACE_EVENT(purge_vmap_area_lazy,
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TP_PROTO(unsigned long start, unsigned long end,
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unsigned int npurged),
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TP_ARGS(start, end, npurged),
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TP_STRUCT__entry(
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__field(unsigned long, start)
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__field(unsigned long, end)
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__field(unsigned int, npurged)
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),
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TP_fast_assign(
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__entry->start = start;
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__entry->end = end;
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__entry->npurged = npurged;
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),
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TP_printk("start=0x%lx end=0x%lx num_purged=%u",
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__entry->start, __entry->end, __entry->npurged)
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);
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/**
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* free_vmap_area_noflush - called when a vmap area is freed
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* @va_start: a start address of VA
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* @nr_lazy: number of current lazy pages
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* @nr_lazy_max: number of maximum lazy pages
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*
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* This event is used for a debug purpose. It gives some
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* indication about a VA that is released, number of current
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* outstanding areas and a maximum allowed threshold before
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* dropping all of them.
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*/
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TRACE_EVENT(free_vmap_area_noflush,
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TP_PROTO(unsigned long va_start, unsigned long nr_lazy,
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unsigned long nr_lazy_max),
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TP_ARGS(va_start, nr_lazy, nr_lazy_max),
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TP_STRUCT__entry(
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__field(unsigned long, va_start)
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__field(unsigned long, nr_lazy)
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__field(unsigned long, nr_lazy_max)
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),
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TP_fast_assign(
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__entry->va_start = va_start;
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__entry->nr_lazy = nr_lazy;
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__entry->nr_lazy_max = nr_lazy_max;
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),
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TP_printk("va_start=0x%lx nr_lazy=%lu nr_lazy_max=%lu",
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__entry->va_start, __entry->nr_lazy, __entry->nr_lazy_max)
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);
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#endif /* _TRACE_VMALLOC_H */
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/* This part must be outside protection */
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#include <trace/define_trace.h>
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