From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pa0-f41.google.com (mail-pa0-f41.google.com [209.85.220.41]) by kanga.kvack.org (Postfix) with ESMTP id 1F6BC6B0254 for ; Wed, 9 Dec 2015 16:42:23 -0500 (EST) Received: by pacej9 with SMTP id ej9so35940206pac.2 for ; Wed, 09 Dec 2015 13:42:22 -0800 (PST) Received: from mail-pa0-x22d.google.com (mail-pa0-x22d.google.com. [2607:f8b0:400e:c03::22d]) by mx.google.com with ESMTPS id dw8si15127998pab.16.2015.12.09.13.42.22 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Wed, 09 Dec 2015 13:42:22 -0800 (PST) Received: by pacdm15 with SMTP id dm15so35951982pac.3 for ; Wed, 09 Dec 2015 13:42:22 -0800 (PST) From: Yang Shi Subject: [PATCH v5 1/7] trace/events: Add gup trace events Date: Wed, 9 Dec 2015 13:22:25 -0800 Message-Id: <1449696151-4195-2-git-send-email-yang.shi@linaro.org> In-Reply-To: <1449696151-4195-1-git-send-email-yang.shi@linaro.org> References: <1449696151-4195-1-git-send-email-yang.shi@linaro.org> Sender: owner-linux-mm@kvack.org List-ID: To: akpm@linux-foundation.org, rostedt@goodmis.org, mingo@redhat.com Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org, linaro-kernel@lists.linaro.org, yang.shi@linaro.org page-faults events record the invoke to handle_mm_fault, but the invoke may come from do_page_fault or gup. In some use cases, the finer event count mey be needed, so add trace events support for: __get_user_pages __get_user_pages_fast fixup_user_fault Signed-off-by: Yang Shi --- include/trace/events/gup.h | 63 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 63 insertions(+) create mode 100644 include/trace/events/gup.h diff --git a/include/trace/events/gup.h b/include/trace/events/gup.h new file mode 100644 index 0000000..ac0e011 --- /dev/null +++ b/include/trace/events/gup.h @@ -0,0 +1,63 @@ +#undef TRACE_SYSTEM +#define TRACE_SYSTEM gup + +#if !defined(_TRACE_GUP_H) || defined(TRACE_HEADER_MULTI_READ) +#define _TRACE_GUP_H + +#include +#include + +TRACE_EVENT(gup_fixup_user_fault, + + TP_PROTO(unsigned long address), + + TP_ARGS(address), + + TP_STRUCT__entry( + __field( unsigned long, address ) + ), + + TP_fast_assign( + __entry->address = address; + ), + + TP_printk("address=%lx", __entry->address) +); + +DECLARE_EVENT_CLASS(gup, + + TP_PROTO(unsigned long start, unsigned int nr_pages), + + TP_ARGS(start, nr_pages), + + TP_STRUCT__entry( + __field( unsigned long, start ) + __field( unsigned int, nr_pages ) + ), + + TP_fast_assign( + __entry->start = start; + __entry->nr_pages = nr_pages; + ), + + TP_printk("start=%lx nr_pages=%d", __entry->start, __entry->nr_pages) +); + +DEFINE_EVENT(gup, gup_get_user_pages, + + TP_PROTO(unsigned long start, unsigned int nr_pages), + + TP_ARGS(start, nr_pages) +); + +DEFINE_EVENT(gup, gup_get_user_pages_fast, + + TP_PROTO(unsigned long start, unsigned int nr_pages), + + TP_ARGS(start, nr_pages) +); + +#endif /* _TRACE_GUP_H */ + +/* This part must be outside protection */ +#include -- 2.0.2 -- 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