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Date: Tue, 24 Feb 2015 21:44:32 +0300 From: Stefan Strogin <s.strogin@...tner.samsung.com> To: linux-mm@...ck.org, linux-kernel@...r.kernel.org Cc: Stefan Strogin <s.strogin@...tner.samsung.com>, Joonsoo Kim <iamjoonsoo.kim@....com>, Andrew Morton <akpm@...ux-foundation.org>, Marek Szyprowski <m.szyprowski@...sung.com>, Michal Nazarewicz <mina86@...a86.com>, aneesh.kumar@...ux.vnet.ibm.com, Laurent Pinchart <laurent.pinchart@...asonboard.com>, Dmitry Safonov <d.safonov@...tner.samsung.com>, Pintu Kumar <pintu.k@...sung.com>, Weijie Yang <weijie.yang@...sung.com>, Laura Abbott <lauraa@...eaurora.org>, SeongJae Park <sj38.park@...il.com>, Hui Zhu <zhuhui@...omi.com>, Minchan Kim <minchan@...nel.org>, Dyasly Sergey <s.dyasly@...sung.com>, Vyacheslav Tyrtov <v.tyrtov@...sung.com>, Aleksei Mateosian <a.mateosian@...sung.com>, gregory.0xf0@...il.com, sasha.levin@...cle.com, gioh.kim@....com, pavel@....cz, stefan.strogin@...il.com Subject: [PATCH v3 1/4] mm: cma: add trace events to debug physically-contiguous memory allocations Add trace events for cma_alloc() and cma_release(). Signed-off-by: Stefan Strogin <s.strogin@...tner.samsung.com> --- include/trace/events/cma.h | 57 ++++++++++++++++++++++++++++++++++++++++++++++ mm/cma.c | 6 +++++ 2 files changed, 63 insertions(+) create mode 100644 include/trace/events/cma.h diff --git a/include/trace/events/cma.h b/include/trace/events/cma.h new file mode 100644 index 0000000..3fe7a56 --- /dev/null +++ b/include/trace/events/cma.h @@ -0,0 +1,57 @@ +#undef TRACE_SYSTEM +#define TRACE_SYSTEM cma + +#if !defined(_TRACE_CMA_H) || defined(TRACE_HEADER_MULTI_READ) +#define _TRACE_CMA_H + +#include <linux/types.h> +#include <linux/tracepoint.h> + +TRACE_EVENT(cma_alloc, + + TP_PROTO(struct cma *cma, unsigned long pfn, int count), + + TP_ARGS(cma, pfn, count), + + TP_STRUCT__entry( + __field(unsigned long, pfn) + __field(unsigned long, count) + ), + + TP_fast_assign( + __entry->pfn = pfn; + __entry->count = count; + ), + + TP_printk("pfn=%lu page=%p count=%lu\n", + __entry->pfn, + pfn_to_page(__entry->pfn), + __entry->count) +); + +TRACE_EVENT(cma_release, + + TP_PROTO(struct cma *cma, unsigned long pfn, int count), + + TP_ARGS(cma, pfn, count), + + TP_STRUCT__entry( + __field(unsigned long, pfn) + __field(unsigned long, count) + ), + + TP_fast_assign( + __entry->pfn = pfn; + __entry->count = count; + ), + + TP_printk("pfn=%lu page=%p count=%lu\n", + __entry->pfn, + pfn_to_page(__entry->pfn), + __entry->count) +); + +#endif /* _TRACE_CMA_H */ + +/* This part must be outside protection */ +#include <trace/define_trace.h> diff --git a/mm/cma.c b/mm/cma.c index 9e3d44a..3a63c96 100644 --- a/mm/cma.c +++ b/mm/cma.c @@ -23,6 +23,7 @@ # define DEBUG #endif #endif +#define CREATE_TRACE_POINTS #include <linux/memblock.h> #include <linux/err.h> @@ -34,6 +35,7 @@ #include <linux/cma.h> #include <linux/highmem.h> #include <linux/io.h> +#include <trace/events/cma.h> #include "cma.h" @@ -408,6 +410,9 @@ struct page *cma_alloc(struct cma *cma, int count, unsigned int align) start = bitmap_no + mask + 1; } + if (page) + trace_cma_alloc(cma, pfn, count); + pr_debug("%s(): returned %p\n", __func__, page); return page; } @@ -440,6 +445,7 @@ bool cma_release(struct cma *cma, struct page *pages, int count) free_contig_range(pfn, count); cma_clear_bitmap(cma, pfn, count); + trace_cma_release(cma, pfn, count); return true; } -- 2.1.0 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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