Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758388AbbLBXN0 (ORCPT ); Wed, 2 Dec 2015 18:13:26 -0500 Received: from mail-pa0-f45.google.com ([209.85.220.45]:34567 "EHLO mail-pa0-f45.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757049AbbLBXNW (ORCPT ); Wed, 2 Dec 2015 18:13:22 -0500 From: Yang Shi 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 Subject: [PATCH V2 1/7] trace/events: Add gup trace events Date: Wed, 2 Dec 2015 14:53:27 -0800 Message-Id: <1449096813-22436-2-git-send-email-yang.shi@linaro.org> X-Mailer: git-send-email 2.0.2 In-Reply-To: <1449096813-22436-1-git-send-email-yang.shi@linaro.org> References: <1449096813-22436-1-git-send-email-yang.shi@linaro.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2457 Lines: 99 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 | 71 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 71 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..03a4674 --- /dev/null +++ b/include/trace/events/gup.h @@ -0,0 +1,71 @@ +#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(struct task_struct *tsk, struct mm_struct *mm, + unsigned long address, unsigned int fault_flags), + + TP_ARGS(tsk, mm, address, fault_flags), + + TP_STRUCT__entry( + __field( unsigned long, address ) + ), + + TP_fast_assign( + __entry->address = address; + ), + + TP_printk("address=%lx", __entry->address) +); + +TRACE_EVENT(gup_get_user_pages, + + TP_PROTO(struct task_struct *tsk, struct mm_struct *mm, + unsigned long start, unsigned long nr_pages), + + TP_ARGS(tsk, mm, start, nr_pages), + + TP_STRUCT__entry( + __field( unsigned long, start ) + __field( unsigned long, nr_pages ) + ), + + TP_fast_assign( + __entry->start = start; + __entry->nr_pages = nr_pages; + ), + + TP_printk("start=%lx nr_pages=%lu", __entry->start, __entry->nr_pages) +); + +TRACE_EVENT(gup_get_user_pages_fast, + + TP_PROTO(unsigned long start, int nr_pages, int write, + struct page **pages), + + TP_ARGS(start, nr_pages, write, pages), + + TP_STRUCT__entry( + __field( unsigned long, start ) + __field( unsigned long, nr_pages ) + ), + + TP_fast_assign( + __entry->start = start; + __entry->nr_pages = nr_pages; + ), + + TP_printk("start=%lx nr_pages=%lu", __entry->start, __entry->nr_pages) +); + +#endif /* _TRACE_GUP_H */ + +/* This part must be outside protection */ +#include -- 2.0.2 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/