From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-ie0-f176.google.com (mail-ie0-f176.google.com [209.85.223.176]) by kanga.kvack.org (Postfix) with ESMTP id 4C6816B0038 for ; Mon, 16 Mar 2015 12:08:09 -0400 (EDT) Received: by iecsl2 with SMTP id sl2so174259884iec.1 for ; Mon, 16 Mar 2015 09:08:09 -0700 (PDT) Received: from mailout4.w1.samsung.com (mailout4.w1.samsung.com. [210.118.77.14]) by mx.google.com with ESMTPS id m10si11733094igv.41.2015.03.16.09.08.07 for (version=TLSv1 cipher=RC4-MD5 bits=128/128); Mon, 16 Mar 2015 09:08:08 -0700 (PDT) Received: from eucpsbgm1.samsung.com (unknown [203.254.199.244]) by mailout4.w1.samsung.com (Oracle Communications Messaging Server 7u4-24.01(7.0.4.24.0) 64bit (built Nov 17 2011)) with ESMTP id <0NLB00J2RBO1O900@mailout4.w1.samsung.com> for linux-mm@kvack.org; Mon, 16 Mar 2015 16:12:01 +0000 (GMT) From: Stefan Strogin Subject: [PATCH v4 1/5] mm: cma: add trace events to debug physically-contiguous memory allocations Date: Mon, 16 Mar 2015 19:06:56 +0300 Message-id: In-reply-to: References: In-reply-to: References: Sender: owner-linux-mm@kvack.org List-ID: To: linux-mm@kvack.org, linux-kernel@vger.kernel.org Cc: Stefan Strogin , Joonsoo Kim , Andrew Morton , Marek Szyprowski , Michal Nazarewicz , aneesh.kumar@linux.vnet.ibm.com, Laurent Pinchart , Dmitry Safonov , Pintu Kumar , Weijie Yang , Laura Abbott , SeongJae Park , Hui Zhu , Minchan Kim , Dyasly Sergey , Vyacheslav Tyrtov , Aleksei Mateosian , gregory.0xf0@gmail.com, sasha.levin@oracle.com, gioh.kim@lge.com, pavel@ucw.cz, stefan.strogin@gmail.com Add trace events for cma_alloc() and cma_release(). Signed-off-by: Stefan Strogin --- include/trace/events/cma.h | 57 ++++++++++++++++++++++++++++++++++++++++++++++ mm/cma.c | 5 ++++ 2 files changed, 62 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..d88881b --- /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 +#include + +TRACE_EVENT(cma_alloc, + + TP_PROTO(struct cma *cma, struct page *page, int count), + + TP_ARGS(cma, page, count), + + TP_STRUCT__entry( + __field(struct page *, page) + __field(unsigned long, count) + ), + + TP_fast_assign( + __entry->page = page; + __entry->count = count; + ), + + TP_printk("page=%p pfn=%lu count=%lu", + __entry->page, + __entry->page ? page_to_pfn(__entry->page) : 0, + __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", + __entry->pfn, + pfn_to_page(__entry->pfn), + __entry->count) +); + +#endif /* _TRACE_CMA_H */ + +/* This part must be outside protection */ +#include diff --git a/mm/cma.c b/mm/cma.c index 47203fa..63dfc0e 100644 --- a/mm/cma.c +++ b/mm/cma.c @@ -23,6 +23,7 @@ # define DEBUG #endif #endif +#define CREATE_TRACE_POINTS #include #include @@ -34,6 +35,7 @@ #include #include #include +#include #include "cma.h" @@ -414,6 +416,8 @@ struct page *cma_alloc(struct cma *cma, unsigned int count, unsigned int align) start = bitmap_no + mask + 1; } + trace_cma_alloc(cma, page, count); + pr_debug("%s(): returned %p\n", __func__, page); return page; } @@ -446,6 +450,7 @@ bool cma_release(struct cma *cma, const struct page *pages, unsigned 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, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org