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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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0f0848e511
cma allocation should be guranteeded to succeed. But sometimes it can fail in the current implementation. To track down the problem, we need to know which page is problematic and this new tracepoint will report it. Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@lge.com> Acked-by: Michal Nazarewicz <mina86@mina86.com> Acked-by: David Rientjes <rientjes@google.com> Cc: Minchan Kim <minchan@kernel.org> Acked-by: Vlastimil Babka <vbabka@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
39 lines
904 B
C
39 lines
904 B
C
#undef TRACE_SYSTEM
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#define TRACE_SYSTEM page_isolation
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#if !defined(_TRACE_PAGE_ISOLATION_H) || defined(TRACE_HEADER_MULTI_READ)
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#define _TRACE_PAGE_ISOLATION_H
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#include <linux/tracepoint.h>
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TRACE_EVENT(test_pages_isolated,
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TP_PROTO(
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unsigned long start_pfn,
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unsigned long end_pfn,
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unsigned long fin_pfn),
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TP_ARGS(start_pfn, end_pfn, fin_pfn),
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TP_STRUCT__entry(
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__field(unsigned long, start_pfn)
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__field(unsigned long, end_pfn)
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__field(unsigned long, fin_pfn)
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),
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TP_fast_assign(
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__entry->start_pfn = start_pfn;
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__entry->end_pfn = end_pfn;
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__entry->fin_pfn = fin_pfn;
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),
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TP_printk("start_pfn=0x%lx end_pfn=0x%lx fin_pfn=0x%lx ret=%s",
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__entry->start_pfn, __entry->end_pfn, __entry->fin_pfn,
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__entry->end_pfn == __entry->fin_pfn ? "success" : "fail")
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);
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#endif /* _TRACE_PAGE_ISOLATION_H */
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/* This part must be outside protection */
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#include <trace/define_trace.h>
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