From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758112AbdJMKCi (ORCPT ); Fri, 13 Oct 2017 06:02:38 -0400 Received: from szxga05-in.huawei.com ([45.249.212.191]:8033 "EHLO szxga05-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757845AbdJMKCL (ORCPT ); Fri, 13 Oct 2017 06:02:11 -0400 From: Chao Yu To: CC: , , , Chao Yu Subject: [PATCH 2/5] f2fs: trace f2fs_readdir Date: Fri, 13 Oct 2017 18:01:33 +0800 Message-ID: <20171013100136.35212-2-yuchao0@huawei.com> X-Mailer: git-send-email 2.13.1.388.g69e6b9b4f4a9 In-Reply-To: <20171013100136.35212-1-yuchao0@huawei.com> References: <20171013100136.35212-1-yuchao0@huawei.com> MIME-Version: 1.0 Content-Type: text/plain X-Originating-IP: [10.120.216.130] X-CFilter-Loop: Reflected X-Mirapoint-Virus-RAPID-Raw: score=unknown(0), refid=str=0001.0A0B0208.59E08F10.004B,ss=1,re=0.000,recu=0.000,reip=0.000,cl=1,cld=1,fgs=0, ip=0.0.0.0, so=2014-11-16 11:51:01, dmn=2013-03-21 17:37:32 X-Mirapoint-Loop-Id: 8719425aebd44a0cecab9dfb64d6bd32 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This patch adds trace for f2fs_readdir. Signed-off-by: Chao Yu --- fs/f2fs/dir.c | 14 +++++++++----- include/trace/events/f2fs.h | 29 +++++++++++++++++++++++++++++ 2 files changed, 38 insertions(+), 5 deletions(-) diff --git a/fs/f2fs/dir.c b/fs/f2fs/dir.c index c0c933ad43c8..148927f5bc93 100644 --- a/fs/f2fs/dir.c +++ b/fs/f2fs/dir.c @@ -14,6 +14,7 @@ #include "node.h" #include "acl.h" #include "xattr.h" +#include static unsigned long dir_blocks(struct inode *inode) { @@ -847,6 +848,7 @@ static int f2fs_readdir(struct file *file, struct dir_context *ctx) struct f2fs_dentry_block *dentry_blk = NULL; struct page *dentry_page = NULL; struct file_ra_state *ra = &file->f_ra; + loff_t start_pos = ctx->pos; unsigned int n = ((unsigned long)ctx->pos / NR_DENTRY_IN_BLOCK); struct f2fs_dentry_ptr d; struct fscrypt_str fstr = FSTR_INIT(NULL, 0); @@ -855,16 +857,16 @@ static int f2fs_readdir(struct file *file, struct dir_context *ctx) if (f2fs_encrypted_inode(inode)) { err = fscrypt_get_encryption_info(inode); if (err && err != -ENOKEY) - return err; + goto out; err = fscrypt_fname_alloc_buffer(inode, F2FS_NAME_LEN, &fstr); if (err < 0) - return err; + goto out; } if (f2fs_has_inline_dentry(inode)) { err = f2fs_read_inline_dir(file, ctx, &fstr); - goto out; + goto out_free; } /* readahead for multi pages of dir */ @@ -880,7 +882,7 @@ static int f2fs_readdir(struct file *file, struct dir_context *ctx) err = 0; continue; } else { - goto out; + goto out_free; } } @@ -900,8 +902,10 @@ static int f2fs_readdir(struct file *file, struct dir_context *ctx) kunmap(dentry_page); f2fs_put_page(dentry_page, 1); } -out: +out_free: fscrypt_fname_free_buffer(&fstr); +out: + trace_f2fs_readdir(inode, start_pos, ctx->pos, err); return err < 0 ? err : 0; } diff --git a/include/trace/events/f2fs.h b/include/trace/events/f2fs.h index df9dd1b62820..6c4dbcc2ee3d 100644 --- a/include/trace/events/f2fs.h +++ b/include/trace/events/f2fs.h @@ -784,6 +784,35 @@ TRACE_EVENT(f2fs_lookup_end, __entry->err) ); +TRACE_EVENT(f2fs_readdir, + + TP_PROTO(struct inode *dir, loff_t start_pos, loff_t end_pos, int err), + + TP_ARGS(dir, start_pos, end_pos, err), + + TP_STRUCT__entry( + __field(dev_t, dev) + __field(ino_t, ino) + __field(loff_t, start) + __field(loff_t, end) + __field(int, err) + ), + + TP_fast_assign( + __entry->dev = dir->i_sb->s_dev; + __entry->ino = dir->i_ino; + __entry->start = start_pos; + __entry->end = end_pos; + __entry->err = err; + ), + + TP_printk("dev = (%d,%d), ino = %lu, start_pos:%llu, end_pos:%llu, err:%d", + show_dev_ino(__entry), + __entry->start, + __entry->end, + __entry->err) +); + TRACE_EVENT(f2fs_fallocate, TP_PROTO(struct inode *inode, int mode, -- 2.13.1.388.g69e6b9b4f4a9