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 838DFE6BF3C for ; Sat, 31 Jan 2026 02:26:47 +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=U0waOgvAzQ58UWgdMHpVidS4yFid1s5uLS9RFmMO0wo=; b=Q0/DUcT1HjX8Y+MbzQqL0pKWDP G3GrHA3aTp9fVZ9/++LoUHJ+Ubrph5LF6th0tC1NBQjdds1tP3YqMPWQffT8O8vYXTMhNhpMeavsK P7i9wI5OJhPG3GEh91V2zIvUh/AkQCxyB2UnDycQNmSZciZK4DANaqAa4x5urzdhZKL4=; Received: from [127.0.0.1] (helo=sfs-ml-1.v29.lw.sourceforge.com) by sfs-ml-1.v29.lw.sourceforge.com with esmtp (Exim 4.95) (envelope-from ) id 1vm0hC-000400-F8; Sat, 31 Jan 2026 02:26:46 +0000 Received: from [172.30.29.66] (helo=mx.sourceforge.net) by sfs-ml-1.v29.lw.sourceforge.com with esmtps (TLS1.2) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.95) (envelope-from ) id 1vm0hA-0003zs-U8 for linux-f2fs-devel@lists.sourceforge.net; Sat, 31 Jan 2026 02:26:44 +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=JD/j3IAsEN9OrTXspeUwjpa2tAgt7stPdS0BripLqUI=; b=PcROUUAnkVLjD8/7nfmmOERoUP eOX7Nk9cdwt51pBKY3ZLc7EDEu9gnA8JEkIlPhThXRMOOidfXu5A0sGF2CLDZjU83Sfshy5Dsnrs0 sbDc0zkkdcT60YKCYh3JMJpkos9AMcwczKiMMr98LHNnkBdG56PxWCVUI0oVXFOExVqI=; 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=JD/j3IAsEN9OrTXspeUwjpa2tAgt7stPdS0BripLqUI=; b=H1MUr3464QZFnhggnJ/VcvAegW DgDQahjBsfdvUG6BKbVN7U1jT9um2UBJRxqcTXvC4fRBoeQIAmq2B35Up8JAwPwAtkR9CCcVBE5HN ULBb5kgAig+otnWx03GtYeoVrEE8w+uF5sJDfhAuGG65HbfJOLtBc5ZVW2uIzwG2Cxt0=; Received: from tor.source.kernel.org ([172.105.4.254]) by sfi-mx-2.v28.lw.sourceforge.com with esmtps (TLS1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.95) id 1vm0hA-0001ti-9w for linux-f2fs-devel@lists.sourceforge.net; Sat, 31 Jan 2026 02:26:44 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by tor.source.kernel.org (Postfix) with ESMTP id 22B5660008 for ; Sat, 31 Jan 2026 02:26:33 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id AE767C116D0; Sat, 31 Jan 2026 02:26:31 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1769826392; bh=sVoBYWt86eN4DNlfx895Vh0r1E93SiOa1EZHZwaUzgo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=E7OmvTuPI4a9DiB+hdLXzS39PHbq+2fLhbm1C/n7b+XZCBGvAHDtxJeNh5PYiuzZE bzyJ17vHiFXcVSWH/fcOMvzp4J4BjZVm3eeiqI9zqsh8uC5rL0DVaZ2yRoMSkPrrP0 fHvAONmd7kdJFqUgcB9JgevkPCBXatxGHiQV06eHKYZSYT6qAAFJgrgebOE7qcfbfj ihl4NDUvHcJayNXnO8n1joRyJK/X0e0vj7Ja++DrTCv2GhntW15UxesmWfab4LBjRj sQ5IHE2ex5bXs2VvORXEa+1tyW1yJiPTPQoNP5cPf2IVc9ZdwILOAAoLP939b40An9 +ehtfasEYAvKQ== To: jaegeuk@kernel.org Date: Fri, 30 Jan 2026 21:28:09 +0800 Message-Id: <20260130132809.59707-2-chao@kernel.org> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20260130132809.59707-1-chao@kernel.org> References: <20260130132809.59707-1-chao@kernel.org> MIME-Version: 1.0 X-Headers-End: 1vm0hA-0001ti-9w Subject: [f2fs-dev] [PATCH 2/2] f2fs: introduce trace_f2fs_priority_update 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 This patch introduces two new tracepoints for debug purpose. Signed-off-by: Chao Yu --- fs/f2fs/checkpoint.c | 17 +++++++---- include/trace/events/f2fs.h | 57 +++++++++++++++++++++++++++++++++++++ 2 files changed, 69 insertions(+), 5 deletions(-) diff --git a/fs/f2fs/checkpoint.c b/fs/f2fs/checkpoint.c index 2f5a03e29d0b..4afa5d9a19fc 100644 --- a/fs/f2fs/checkpoint.c +++ b/fs/f2fs/checkpoint.c @@ -130,9 +130,13 @@ static void uplift_priority(struct f2fs_rwsem *sem, struct f2fs_lock_context *lc return; set_user_nice(current, lc->new_nice); lc->need_restore = true; + + trace_f2fs_priority_uplift(sem->sbi, sem->name, is_write, current, + NICE_TO_PRIO(lc->orig_nice), NICE_TO_PRIO(lc->new_nice)); } -static void restore_priority(struct f2fs_lock_context *lc) +static void restore_priority(struct f2fs_rwsem *sem, struct f2fs_lock_context *lc, + bool is_write) { if (!lc->need_restore) return; @@ -140,6 +144,9 @@ static void restore_priority(struct f2fs_lock_context *lc) if (task_nice(current) != lc->new_nice) return; set_user_nice(current, lc->orig_nice); + + trace_f2fs_priority_restore(sem->sbi, sem->name, is_write, current, + NICE_TO_PRIO(lc->orig_nice), NICE_TO_PRIO(lc->new_nice)); } void f2fs_down_read_trace(struct f2fs_rwsem *sem, struct f2fs_lock_context *lc) @@ -153,7 +160,7 @@ int f2fs_down_read_trylock_trace(struct f2fs_rwsem *sem, struct f2fs_lock_contex { uplift_priority(sem, lc, false); if (!f2fs_down_read_trylock(sem)) { - restore_priority(lc); + restore_priority(sem, lc, false); return 0; } trace_lock_elapsed_time_start(sem, lc); @@ -163,7 +170,7 @@ int f2fs_down_read_trylock_trace(struct f2fs_rwsem *sem, struct f2fs_lock_contex void f2fs_up_read_trace(struct f2fs_rwsem *sem, struct f2fs_lock_context *lc) { f2fs_up_read(sem); - restore_priority(lc); + restore_priority(sem, lc, false); trace_lock_elapsed_time_end(sem, lc, false); } @@ -178,7 +185,7 @@ int f2fs_down_write_trylock_trace(struct f2fs_rwsem *sem, struct f2fs_lock_conte { uplift_priority(sem, lc, true); if (!f2fs_down_write_trylock(sem)) { - restore_priority(lc); + restore_priority(sem, lc, true); return 0; } trace_lock_elapsed_time_start(sem, lc); @@ -188,7 +195,7 @@ int f2fs_down_write_trylock_trace(struct f2fs_rwsem *sem, struct f2fs_lock_conte void f2fs_up_write_trace(struct f2fs_rwsem *sem, struct f2fs_lock_context *lc) { f2fs_up_write(sem); - restore_priority(lc); + restore_priority(sem, lc, true); trace_lock_elapsed_time_end(sem, lc, true); } diff --git a/include/trace/events/f2fs.h b/include/trace/events/f2fs.h index c3b6b509472f..9364e6775562 100644 --- a/include/trace/events/f2fs.h +++ b/include/trace/events/f2fs.h @@ -2525,6 +2525,63 @@ TRACE_EVENT(f2fs_lock_elapsed_time, __entry->other_time) ); +DECLARE_EVENT_CLASS(f2fs_priority_update, + + TP_PROTO(struct f2fs_sb_info *sbi, enum f2fs_lock_name lock_name, + bool is_write, struct task_struct *p, int orig_prio, + int new_prio), + + TP_ARGS(sbi, lock_name, is_write, p, orig_prio, new_prio), + + TP_STRUCT__entry( + __field(dev_t, dev) + __array(char, comm, TASK_COMM_LEN) + __field(pid_t, pid) + __field(unsigned int, lock_name) + __field(bool, is_write) + __field(int, orig_prio) + __field(int, new_prio) + ), + + TP_fast_assign( + __entry->dev = sbi->sb->s_dev; + memcpy(__entry->comm, p->comm, TASK_COMM_LEN); + __entry->pid = p->pid; + __entry->lock_name = lock_name; + __entry->is_write = is_write; + __entry->orig_prio = orig_prio; + __entry->new_prio = new_prio; + ), + + TP_printk("dev = (%d,%d), comm: %s, pid: %d, lock_name: %s, " + "lock_type: %s, orig_prio: %d, new_prio: %d", + show_dev(__entry->dev), + __entry->comm, + __entry->pid, + show_lock_name(__entry->lock_name), + __entry->is_write ? "wlock" : "rlock", + __entry->orig_prio, + __entry->new_prio) +); + +DEFINE_EVENT(f2fs_priority_update, f2fs_priority_uplift, + + TP_PROTO(struct f2fs_sb_info *sbi, enum f2fs_lock_name lock_name, + bool is_write, struct task_struct *p, int orig_prio, + int new_prio), + + TP_ARGS(sbi, lock_name, is_write, p, orig_prio, new_prio) +); + +DEFINE_EVENT(f2fs_priority_update, f2fs_priority_restore, + + TP_PROTO(struct f2fs_sb_info *sbi, enum f2fs_lock_name lock_name, + bool is_write, struct task_struct *p, int orig_prio, + int new_prio), + + TP_ARGS(sbi, lock_name, is_write, p, orig_prio, new_prio) +); + #endif /* _TRACE_F2FS_H */ /* This part must be outside protection */ -- 2.40.1 _______________________________________________ Linux-f2fs-devel mailing list Linux-f2fs-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel