From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934505AbaEFIrJ (ORCPT ); Tue, 6 May 2014 04:47:09 -0400 Received: from mailout4.samsung.com ([203.254.224.34]:51685 "EHLO mailout4.samsung.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753674AbaEFIrF (ORCPT ); Tue, 6 May 2014 04:47:05 -0400 X-AuditID: cbfee61b-b7f766d00000646c-1e-5368a186e684 From: Chao Yu To: Jaegeuk Kim Cc: linux-f2fs-devel@lists.sourceforge.net, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [f2fs-dev][PATCH 1/6] f2fs: add a tracepoint for f2fs_write_begin Date: Tue, 06 May 2014 16:46:04 +0800 Message-id: <004301cf6907$bdd25740$397705c0$@samsung.com> MIME-version: 1.0 Content-type: text/plain; charset=us-ascii Content-transfer-encoding: 7bit X-Mailer: Microsoft Outlook 14.0 Thread-index: Ac9pB5BVTXvG4WizSyKRLaLYBajkFA== Content-language: zh-cn X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFjrHLMWRmVeSWpSXmKPExsVy+t9jQd22hRnBBk3fRCyu7/rLZHFpkbvF nr0nWSwu75rD5sDisXvBZyaPvi2rGD0+b5ILYI7isklJzcksSy3St0vgytj55QxbwXPeiqbz +1gbGOdxdzFyckgImEh83nCRBcIWk7hwbz1bFyMXh5DAdEaJKdO/s0I4Pxglzs7uYQKpYhNQ kVje8R/MFhHQlHi8fDMziM0skClxr2kGmC0s4CWx/s97NhCbRUBV4nbff0YQm1fAUmLXwdns ELagxI/J91ggerUk1u88zgRhy0tsXvOWGeIiBYkdZ18zQuzSk9jcsRmqRlxi45FbLBMYBWYh GTULyahZSEbNQtKygJFlFaNoakFyQXFSeq6RXnFibnFpXrpecn7uJkZwKD+T3sG4qsHiEKMA B6MSD++JlenBQqyJZcWVuYcYJTiYlUR46/MzgoV4UxIrq1KL8uOLSnNSiw8xSnOwKInzHmy1 DhQSSE8sSc1OTS1ILYLJMnFwSjUwWvq1H/3NObe36UB7+QrmrXllq6dn1YS0v3n+zD3ghff0 qPD6tRemHLsv7f9EKp49QqlrxeNlL3Zfiww88LQtMsBfeemfPR5a2r9Xd9rGvfWvOnRoRhqX jXnq5MV2/HsYdc8dPpFiK7JF+XPJjxfc1usyL2/zWj1b39/s1YIdWwMyO7W0J/UnK7EUZyQa ajEXFScCAH0nHdxhAgAA Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This patch adds a tracepoint for f2fs_write_begin to trace write op of user. Signed-off-by: Chao Yu --- fs/f2fs/data.c | 2 ++ include/trace/events/f2fs.h | 30 ++++++++++++++++++++++++++++++ 2 files changed, 32 insertions(+) diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c index a7bb98f..cde0d69 100644 --- a/fs/f2fs/data.c +++ b/fs/f2fs/data.c @@ -900,6 +900,8 @@ static int f2fs_write_begin(struct file *file, struct address_space *mapping, struct dnode_of_data dn; int err = 0; + trace_f2fs_write_begin(inode, pos, len, flags); + f2fs_balance_fs(sbi); repeat: err = f2fs_convert_inline_data(inode, pos + len); diff --git a/include/trace/events/f2fs.h b/include/trace/events/f2fs.h index 67f38fa..1e9375a 100644 --- a/include/trace/events/f2fs.h +++ b/include/trace/events/f2fs.h @@ -659,6 +659,36 @@ DEFINE_EVENT_CONDITION(f2fs__submit_bio, f2fs_submit_read_bio, TP_CONDITION(bio) ); +TRACE_EVENT(f2fs_write_begin, + + TP_PROTO(struct inode *inode, loff_t pos, unsigned int len, + unsigned int flags), + + TP_ARGS(inode, pos, len, flags), + + TP_STRUCT__entry( + __field(dev_t, dev) + __field(ino_t, ino) + __field(loff_t, pos) + __field(unsigned int, len) + __field(unsigned int, flags) + ), + + TP_fast_assign( + __entry->dev = inode->i_sb->s_dev; + __entry->ino = inode->i_ino; + __entry->pos = pos; + __entry->len = len; + __entry->flags = flags; + ), + + TP_printk("dev = (%d,%d), ino = %lu, pos = %llu, len = %u, flags = %u", + show_dev_ino(__entry), + (unsigned long long)__entry->pos, + __entry->len, + __entry->flags) +); + DECLARE_EVENT_CLASS(f2fs__page, TP_PROTO(struct page *page, int type), -- 1.7.9.5