From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 4388B26D4C1 for ; Fri, 21 Nov 2025 01:42:07 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1763689328; cv=none; b=gWhlLnXVTSVsxItS//N2MepWfRUrlZhSeje13XqEBIqXmpYH12RRRxedswI7fdpKF08Z9xmsAgfv0KwvoPap+s/Coc/oGrLUBgx9dNR8Kc7DvhgJ+C1wPWtAKV/mUvcptUDt26igr22ZtuG1Q3qpnc7vYh7bp+nrC6v/hSkOWvQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1763689328; c=relaxed/simple; bh=pgHvA2TK3yIfyEQY0xbsNCMyz0hTFjZE0URPIaBS6/U=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=QHBI6LDtfnbVX9DuyghXEydsA8J/QX+L2OFemgWyUagl7UUKWMW6pdxECwy7kyimVVg8z8eoY/PFXmm2r0FDMtm3qoEI8TDkxVJo6E846JWC7cgyVvGm8z11wSe3aZA8Xxtz+uLwydUMpETTgNXu2dszf2g7GYgjpy4Eww04Eig= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=Mg+rkKhn; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="Mg+rkKhn" Received: by smtp.kernel.org (Postfix) with ESMTPSA id BBF77C4CEF1; Fri, 21 Nov 2025 01:42:07 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1763689327; bh=pgHvA2TK3yIfyEQY0xbsNCMyz0hTFjZE0URPIaBS6/U=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Mg+rkKhnOL8zhFrQRljvt+QBzExONGBWRZfRsS9ayEQS4PXcTpED0aQgB+bB6dlhZ VZNPRUHlIEeUVGnxTOJA/EclbSZrx77O8d1jR/r5+GYXM6Ev0gLR6pzpM9w8fLWoNZ LBQERBdDdouK5FelHBdndLwT4tzS0udlT66Wt8iOVFFl/CwP6MZj+FOr+LFURybhvF UvwW03cm/mK4yMFb7RsVgir8EvFIrA+vDmdMMqklASv8eepHC7p63iuDHVmGEu+/sp s8bRh41+TdZ0Mx1FRB2UIddCk345+k2tyiyE/Q7oLvUFyu36Ax3ddolZvaDmbbIZsB tBsQv7499MT1Q== From: Jaegeuk Kim To: linux-kernel@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net Cc: Jaegeuk Kim Subject: [PATCH 2/2] f2fs: add a tracepoint for readahead pages Date: Fri, 21 Nov 2025 01:42:02 +0000 Message-ID: <20251121014202.1969909-2-jaegeuk@kernel.org> X-Mailer: git-send-email 2.52.0.487.g5c8c507ade-goog In-Reply-To: <20251121014202.1969909-1-jaegeuk@kernel.org> References: <20251121014202.1969909-1-jaegeuk@kernel.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit This patch adds a tracepoint to track the f2fs_readahead_pages(). Signed-off-by: Jaegeuk Kim --- fs/f2fs/data.c | 3 +++ include/trace/events/f2fs.h | 43 +++++++++++++++++++++++++++++++++++++ 2 files changed, 46 insertions(+) diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c index d95974d79fb3..c80d7960b652 100644 --- a/fs/f2fs/data.c +++ b/fs/f2fs/data.c @@ -2757,6 +2757,8 @@ int f2fs_readahead_pages(struct file *file, loff_t offset, loff_t len) if (start_index > end_index) return 0; + trace_f2fs_readahead_pages_start(inode, start_index, end_index); + nrpages = end_index - start_index + 1; while (nrpages) { @@ -2768,6 +2770,7 @@ int f2fs_readahead_pages(struct file *file, loff_t offset, loff_t len) nrpages -= this_chunk; } + trace_f2fs_readahead_pages_end(inode, start_index, end_index); return 0; } diff --git a/include/trace/events/f2fs.h b/include/trace/events/f2fs.h index d406b047c50b..bb98a9655ec9 100644 --- a/include/trace/events/f2fs.h +++ b/include/trace/events/f2fs.h @@ -618,6 +618,49 @@ TRACE_EVENT(f2fs_fadvise, __entry->advice) ); +DECLARE_EVENT_CLASS(f2fs__readahead_pages, + + TP_PROTO(struct inode *inode, pgoff_t start, pgoff_t end), + + TP_ARGS(inode, start, end), + + TP_STRUCT__entry( + __field(dev_t, dev) + __field(ino_t, ino) + __field(loff_t, size) + __field(pgoff_t, start) + __field(pgoff_t, end) + ), + + TP_fast_assign( + __entry->dev = inode->i_sb->s_dev; + __entry->ino = inode->i_ino; + __entry->size = inode->i_size; + __entry->start = start; + __entry->end = end; + ), + + TP_printk("dev = (%d,%d), ino = %lu, i_size = %lld start: %lu, end: %lu", + show_dev_ino(__entry), + (unsigned long long)__entry->size, + __entry->start, + __entry->end) +); + +DEFINE_EVENT(f2fs__readahead_pages, f2fs_readahead_pages_start, + + TP_PROTO(struct inode *inode, pgoff_t start, pgoff_t end), + + TP_ARGS(inode, start, end) +); + +DEFINE_EVENT(f2fs__readahead_pages, f2fs_readahead_pages_end, + + TP_PROTO(struct inode *inode, pgoff_t start, pgoff_t end), + + TP_ARGS(inode, start, end) +); + TRACE_EVENT(f2fs_map_blocks, TP_PROTO(struct inode *inode, struct f2fs_map_blocks *map, int flag, int ret), -- 2.52.0.487.g5c8c507ade-goog