From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S965883AbbCPQIL (ORCPT ); Mon, 16 Mar 2015 12:08:11 -0400 Received: from mailout4.w1.samsung.com ([210.118.77.14]:21719 "EHLO mailout4.w1.samsung.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S965017AbbCPQIE (ORCPT ); Mon, 16 Mar 2015 12:08:04 -0400 X-AuditID: cbfec7f4-b7f126d000001e9a-d5-5506ff514ef7 From: Stefan Strogin 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 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: X-Mailer: git-send-email 2.1.0 In-reply-to: References: In-reply-to: References: X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFprCIsWRmVeSWpSXmKPExsVy+t/xy7qB/9lCDY7+tbJ4OG8Su8Wc9WvY LB6/nsdi8WnlUzaLZ01fGC2mTd/AarGyu5nNYnvnDHaLzolL2C0u75rDZnFvzX9Wi7VH7rJb LDjewmqx7Ot7dou7p46yWfR9P8xuMXm2lMW3k3OYLRYfuc1scW1HP5PF5Tf/2S2mzvjBbnFy w1lWiw3NXA4SHpf7epk8ds66y+4xu2Mmq8emVZ1sHps+TWL36Hp7hcnjxIzfLB4PDm1m8Vj3 5xWTx8ent1g8Dr7bw+TRt2UVo8eK1d/ZPT5vkvPo2viLNYA/issmJTUnsyy1SN8ugStjwteP LAUrRCrudy1hb2DcINDFyMkhIWAiMbehgxnCFpO4cG89WxcjF4eQwFJGiTuLFrNAOL1MEk8f 97KBVLEBdRy7MJ0RxBYBsnc3z2UEKWIW2Mom0XDyBwtIQlggVeLqi/OsIDaLgKrEndndYHFe oPj8uecYIdbJSWzY/R/M5hRwlNh3qgOsRkjAQWLBva84xScw8i9gZFjFKJpamlxQnJSea6hX nJhbXJqXrpecn7uJERKTX3YwLj5mdYhRgINRiYc3Qp4tVIg1say4MvcQowQHs5II76lXQCHe lMTKqtSi/Pii0pzU4kOMTBycUg2MmodmOL6/v/Grc5yixL0QG87vZyyMC5Y1Bua/XrJ4OceS ksmPrzlHaRW4FOhdOeea9bBWac15RknpO1/mZxpplrB2zrvySGrjC1d23YJf91xXrb24qjz8 jdjKm9drX4Z6z3zItFF+1rHtfjMvBbj23H/2Ryc+Pt+/rCxp8Z+ULHUvz1g79ZoHSizFGYmG WsxFxYkAYxfAf6cCAAA= Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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