From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.sourceforge.net (lists.sourceforge.net [216.105.38.7]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 35955C88E5C for ; Fri, 11 Sep 2026 23:24:38 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.sourceforge.net; s=beta; h=Content-Transfer-Encoding:Content-Type:Cc: Reply-To:From:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:Subject:MIME-Version:References:In-Reply-To: Message-ID:Date:To:Sender:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=PGHkI8cwaDOUtjxQu24F7tjoJm3gE/O/OMjq5SrjfuY=; b=LVNmUrVHPTWXbq/4XiSXuwZo/w KkQLernfu8h11t3COKWdXqMFu09vPNkX05OkgzkMV7n2az66lRs+7w0ChZnRYCstIXdHiDoYoWvFZ Wkv1VazH8LGAGldOFzA18wko6+R4dia9VNxCsKmAumOgttaeKopsS9v7atsBNrlMGSds=; Received: from [127.0.0.1] (helo=sfs-ml-2.v29.lw.sourceforge.com) by sfs-ml-2.v29.lw.sourceforge.com with esmtp (Exim 4.95) (envelope-from ) id 1x5Abl-0004bL-2v; Fri, 11 Sep 2026 23:24:37 +0000 Received: from [172.30.29.66] (helo=mx.sourceforge.net) by sfs-ml-2.v29.lw.sourceforge.com with esmtps (TLS1.2) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.95) (envelope-from ) id 1x5Abh-0004aV-4W for linux-f2fs-devel@lists.sourceforge.net; Fri, 11 Sep 2026 23:24:33 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=sourceforge.net; s=x; h=Content-Transfer-Encoding:MIME-Version:References: In-Reply-To:Message-ID:Date:Subject:Cc:To:From:Sender:Reply-To:Content-Type: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help:List-Unsubscribe: List-Subscribe:List-Post:List-Owner:List-Archive; bh=GsyL1ena/RyiX6ptOYvh3+2Z6zWFaeAvOQIBliFZrpc=; b=Uau/O392//d/XuR8MBb4Dsi5qT QYns9VLjyHA+w/SH0WbzTdJBl711ZtL0fugSFR6ztpVPdTWrbqc7TA5r18qvrTSratig2Gv+mDybR R3/owo5Wv9Z9xdp8FsJYZpKXCR93Hpmr6lUKQWpAgvJXl0RiDDtY8iEuC8iHXQtGc4Kk=; DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=sf.net; s=x ; h=Content-Transfer-Encoding:MIME-Version:References:In-Reply-To:Message-ID: Date:Subject:Cc:To:From:Sender:Reply-To:Content-Type:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Id:List-Help:List-Unsubscribe:List-Subscribe: List-Post:List-Owner:List-Archive; bh=GsyL1ena/RyiX6ptOYvh3+2Z6zWFaeAvOQIBliFZrpc=; b=hLzVNMtdi8jTNcko/bx5N3w/FT 8thIOQF5FHaP9Ku7q/MyAlotRTSGJAxD6mupIqUzwoCmDp7DBWX/As74aplJaWuXXJPUde9dQMHal gncyykB9kUlmVJYnGnxUndik84ryRmYUEYii7PNJL5xu/8XNpqNiqaYjipIfdxfjwl/M=; Received: from sea.source.kernel.org ([172.234.252.31]) by sfi-mx-1.v28.lw.sourceforge.com with esmtps (TLS1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.95) id 1x5Abh-0005Tf-Aj for linux-f2fs-devel@lists.sourceforge.net; Fri, 11 Sep 2026 23:24:33 +0000 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) by sea.source.kernel.org (Postfix) with ESMTP id 75E4744996 for ; Fri, 11 Sep 2026 23:24:28 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 662241F000FF; Fri, 11 Sep 2026 23:24:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1789169068; bh=GsyL1ena/RyiX6ptOYvh3+2Z6zWFaeAvOQIBliFZrpc=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=Dw2AFDLQw0RoONP4Syor4gLKf83631HErmPYkhWyFgcoF4H/+XF70dSrplcqCKaNy i801bN1VrsnH9JYOn0DVvJWhw72oRbI2TuOiyj+n9sJxqSgMTRGxWi05QnmUGlOLoR iXAAhJpr8Nn309SeHxLT81WoX2FJctjbnu/UZLlij3qqYvl3mVxmBY6X+n2m/VuZll HPevtKVUMBfAUL8tKMNXXVysBfoggMULcFHmD9EkGQMntDxIJDO1BU97icr833vxMm oyGZ/LGRa0pifZ+uwDGohi1zPVnse+vhA6Qtz/iZH4bFnhJMLBbsadLX6Q8AZAAeiz sEtWfoA9/0rFw== To: jaegeuk@kernel.org Date: Sat, 12 Sep 2026 07:24:04 +0800 Message-ID: <20260911232405.1815804-12-chao@kernel.org> X-Mailer: git-send-email 2.55.0.1007.g17ff1f9808-goog In-Reply-To: <20260911232405.1815804-1-chao@kernel.org> References: <20260911232405.1815804-1-chao@kernel.org> MIME-Version: 1.0 X-Headers-End: 1x5Abh-0005Tf-Aj Subject: [f2fs-dev] [PATCH v7 11/12] f2fs: cache: introduce tracepoints X-BeenThere: linux-f2fs-devel@lists.sourceforge.net X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , From: Chao Yu via Linux-f2fs-devel Reply-To: Chao Yu Cc: linux-kernel@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: linux-f2fs-devel-bounces@lists.sourceforge.net From: Chao Yu This patch introduces ftrace tracepoints to observe and profile metadata cache operations: - trace_f2fs_cache_set_dirty to trace marking a cached block dirty - trace_f2fs_write_cache to trace single block writeback submission - trace_f2fs_write_caches to tracesbatch writeback and sync sessions Signed-off-by: Chao Yu --- fs/f2fs/cache.c | 3 ++ fs/f2fs/checkpoint.c | 6 ++++ fs/f2fs/segment.c | 3 ++ include/trace/events/f2fs.h | 71 +++++++++++++++++++++++++++++++++++++ 4 files changed, 83 insertions(+) diff --git a/fs/f2fs/cache.c b/fs/f2fs/cache.c index dcab0f321730..33da3f243783 100644 --- a/fs/f2fs/cache.c +++ b/fs/f2fs/cache.c @@ -15,6 +15,7 @@ #include "f2fs.h" #include "cache.h" #include "node.h" +#include #include "segment.h" void f2fs_cache_wait_writeback_cond(struct f2fs_cached_block *entry, @@ -73,6 +74,8 @@ bool f2fs_mark_cache_dirty(struct f2fs_cached_block *entry) enum count_type type = IS_META_CACHE(cache) ? F2FS_DIRTY_META : F2FS_DIRTY_NODES; + trace_f2fs_cache_set_dirty(entry, + IS_META_CACHE(cache) ? META : NODE); f2fs_cache_update_tag(entry, F2FS_CACHE_TAG_NONE, F2FS_CACHE_TAG_DIRTY); inc_page_count(cache->sbi, type); diff --git a/fs/f2fs/checkpoint.c b/fs/f2fs/checkpoint.c index 40a96eb9179c..2542b1a29989 100644 --- a/fs/f2fs/checkpoint.c +++ b/fs/f2fs/checkpoint.c @@ -550,6 +550,8 @@ static bool __f2fs_write_meta_cache(struct f2fs_cached_block *entry, { struct f2fs_sb_info *sbi = entry->cache->sbi; + trace_f2fs_write_cache(entry, META); + if (unlikely(f2fs_cp_error(sbi))) { if (is_sbi_flag_set(sbi, SBI_IS_CLOSE)) { f2fs_cache_clear_uptodate(entry); @@ -611,6 +613,8 @@ long f2fs_sync_meta_caches(struct f2fs_sb_info *sbi, long nr_to_write, struct blk_plug plug; bool background = nr_to_write != LONG_MAX; + trace_f2fs_write_caches(sbi, nr_to_write, 0, META); + blk_start_plug(&plug); while ((nr = f2fs_cache_gang_lookup_tag(META_CACHE(sbi), entries, @@ -666,6 +670,8 @@ long f2fs_sync_meta_caches(struct f2fs_sb_info *sbi, long nr_to_write, blk_finish_plug(&plug); + trace_f2fs_write_caches(sbi, nr_to_write, nwritten, META); + return nwritten; } diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c index 87e24d0306e8..15cffbb5b407 100644 --- a/fs/f2fs/segment.c +++ b/fs/f2fs/segment.c @@ -4226,6 +4226,9 @@ void f2fs_do_write_node_cache(unsigned int nid, struct f2fs_io_info *fio) { struct f2fs_summary sum; + if (fio->is_cache) + trace_f2fs_write_cache(fio->cache_entry, NODE); + set_summary(&sum, nid, 0, 0); do_write_block(&sum, fio); diff --git a/include/trace/events/f2fs.h b/include/trace/events/f2fs.h index d53be932df01..df4cd346ae72 100644 --- a/include/trace/events/f2fs.h +++ b/include/trace/events/f2fs.h @@ -1430,6 +1430,50 @@ DEFINE_EVENT(f2fs__folio, f2fs_set_page_dirty, TP_ARGS(folio, type) ); +DECLARE_EVENT_CLASS(f2fs__cached_block, + + TP_PROTO(struct f2fs_cached_block *block, int type), + + TP_ARGS(block, type), + + TP_STRUCT__entry( + __field(dev_t, dev) + __field(pgoff_t, index) + __field(int, type) + __field(int, dirty) + __field(int, uptodate) + ), + + TP_fast_assign( + __entry->dev = block->cache->sbi->sb->s_dev; + __entry->index = block->index; + __entry->type = type; + __entry->dirty = f2fs_cache_test_dirty(block); + __entry->uptodate = f2fs_cache_test_uptodate(block); + ), + + TP_printk("dev = (%d,%d), %s, index = %lu, dirty = %d, uptodate = %d", + show_dev(__entry->dev), + show_block_type(__entry->type), + (unsigned long)__entry->index, + __entry->dirty, + __entry->uptodate) +); + +DEFINE_EVENT(f2fs__cached_block, f2fs_write_cache, + + TP_PROTO(struct f2fs_cached_block *block, int type), + + TP_ARGS(block, type) +); + +DEFINE_EVENT(f2fs__cached_block, f2fs_cache_set_dirty, + + TP_PROTO(struct f2fs_cached_block *block, int type), + + TP_ARGS(block, type) +); + TRACE_EVENT(f2fs_replace_atomic_write_block, TP_PROTO(struct inode *inode, struct inode *cow_inode, pgoff_t index, @@ -1574,6 +1618,33 @@ TRACE_EVENT(f2fs_writepages, __entry->for_sync) ); +TRACE_EVENT(f2fs_write_caches, + + TP_PROTO(struct f2fs_sb_info *sbi, long nr_to_write, long nwritten, int type), + + TP_ARGS(sbi, nr_to_write, nwritten, type), + + TP_STRUCT__entry( + __field(dev_t, dev) + __field(long, nr_to_write) + __field(long, nwritten) + __field(int, type) + ), + + TP_fast_assign( + __entry->dev = sbi->sb->s_dev; + __entry->nr_to_write = nr_to_write; + __entry->nwritten = nwritten; + __entry->type = type; + ), + + TP_printk("dev = (%d,%d), %s, nr_to_write = %ld, nwritten = %ld", + show_dev(__entry->dev), + show_block_type(__entry->type), + __entry->nr_to_write, + __entry->nwritten) +); + TRACE_EVENT(f2fs_readpages, TP_PROTO(struct inode *inode, pgoff_t start, unsigned int nrpage), -- 2.49.0 _______________________________________________ Linux-f2fs-devel mailing list Linux-f2fs-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel