From patchwork Wed Oct 2 21:27:21 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jeff Layton X-Patchwork-Id: 13820398 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 kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id 2C73ACF8542 for ; Wed, 2 Oct 2024 21:27:57 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 6825C6B0431; Wed, 2 Oct 2024 17:27:52 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 6076A6B0439; Wed, 2 Oct 2024 17:27:52 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 411616B0437; Wed, 2 Oct 2024 17:27:52 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0014.hostedemail.com [216.40.44.14]) by kanga.kvack.org (Postfix) with ESMTP id 122856B042F for ; Wed, 2 Oct 2024 17:27:52 -0400 (EDT) Received: from smtpin23.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay06.hostedemail.com (Postfix) with ESMTP id 701A3AAE20 for ; Wed, 2 Oct 2024 21:27:51 +0000 (UTC) X-FDA: 82629949542.23.72F7E8B Received: from nyc.source.kernel.org (nyc.source.kernel.org [147.75.193.91]) by imf13.hostedemail.com (Postfix) with ESMTP id 9B0502000D for ; Wed, 2 Oct 2024 21:27:49 +0000 (UTC) Authentication-Results: imf13.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20201202 header.b=RiQb+Vas; dmarc=pass (policy=quarantine) header.from=kernel.org; spf=pass (imf13.hostedemail.com: domain of jlayton@kernel.org designates 147.75.193.91 as permitted sender) smtp.mailfrom=jlayton@kernel.org ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1727904448; a=rsa-sha256; cv=none; b=bOS0UOxd85AHCvUALH38b+PU0G8qBLPi5HvVN1BYMurBAmAIZx4MXPCKo2tGrTtxkpbg5g EwTSOGAwf2D6ZTPSbBQeu2yRkze3hFKYFI2FCNQeXTkLrcClXvDMGFqT9GRuKJeD+I3rcH xhKpVbYoou1MwhBKBdy/zhkLmkfpxgc= ARC-Authentication-Results: i=1; imf13.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20201202 header.b=RiQb+Vas; dmarc=pass (policy=quarantine) header.from=kernel.org; spf=pass (imf13.hostedemail.com: domain of jlayton@kernel.org designates 147.75.193.91 as permitted sender) smtp.mailfrom=jlayton@kernel.org ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1727904448; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references:dkim-signature; bh=I6ii9aB09e8UKHOBwSaucQlIFVSRtv+jsZSlvHg6Y9I=; b=1+Guxyis6WDjS1izBXikNnX1S1pVxBjNg9E+kutizwiHqHLOnG9FWHiD1fmlo2PEjOJvpq 1wxe97g8HTTgW6mtmbtN18zx5ZG+RLrAkdyQe9+dd3CIOHOZEIFpulE9K/ToCEndy+MDHS vjKOMHAPLJjr1oit8OaMm0SFgLk85Go= Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by nyc.source.kernel.org (Postfix) with ESMTP id 117C6A4402A; Wed, 2 Oct 2024 21:27:40 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 53227C4CED6; Wed, 2 Oct 2024 21:27:45 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1727904467; bh=MRGGG8rqdJzdD5KgI4WfyNMzLguXPYXob8v5j7W1QaM=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=RiQb+VasJhrhbm+efzGbpIcwLxszW5XKADxsVvHvZ4PtU9omVM1uKPRYjdDFTLrxU spC6qoc3Jx5R2FiTqiPPDvCGVFpDpJoGjjicm25vd2LLcfcz9jjV/RR/bjlnI1V4EY ad67YYwlvOrSCQNhgnodXxdPfs01FPltkNs3R5FmGOCg4ttPkExz83Q71CZ2EKDmER 3vEcrINS5svEVCEpFlZZQrG/rtN2NbUWpkxh9VaYk5MStmuCmVXUCBhdZXbYBg8jBs 7qYe48hdyaiE4eaWZsSg0Wr6BU5TlKcgxiilkkzod6H78fW5qEKHCFkhLxB0g4czZQ 211YHMvElLRgA== From: Jeff Layton Date: Wed, 02 Oct 2024 17:27:21 -0400 Subject: [PATCH v10 06/12] fs: tracepoints around multigrain timestamp events MIME-Version: 1.0 Message-Id: <20241002-mgtime-v10-6-d1c4717f5284@kernel.org> References: <20241002-mgtime-v10-0-d1c4717f5284@kernel.org> In-Reply-To: <20241002-mgtime-v10-0-d1c4717f5284@kernel.org> To: John Stultz , Thomas Gleixner , Stephen Boyd , Alexander Viro , Christian Brauner , Jan Kara , Steven Rostedt , Masami Hiramatsu , Mathieu Desnoyers , Jonathan Corbet , Randy Dunlap , Chandan Babu R , "Darrick J. Wong" , Theodore Ts'o , Andreas Dilger , Chris Mason , Josef Bacik , David Sterba , Hugh Dickins , Andrew Morton , Chuck Lever , Vadim Fedorenko Cc: linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-trace-kernel@vger.kernel.org, linux-doc@vger.kernel.org, linux-xfs@vger.kernel.org, linux-ext4@vger.kernel.org, linux-btrfs@vger.kernel.org, linux-nfs@vger.kernel.org, linux-mm@kvack.org, Jeff Layton X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=openpgp-sha256; l=6245; i=jlayton@kernel.org; h=from:subject:message-id; bh=MRGGG8rqdJzdD5KgI4WfyNMzLguXPYXob8v5j7W1QaM=; b=owEBbQKS/ZANAwAIAQAOaEEZVoIVAcsmYgBm/bq/rrV42gSWRnMywus+4vWn2erTXDHpugNyH p5Jt5mx0kCJAjMEAAEIAB0WIQRLwNeyRHGyoYTq9dMADmhBGVaCFQUCZv26vwAKCRAADmhBGVaC FfHLD/0Y+Ozd45QWOEXlGcizIJuYoklt/IclS6YYuOynkLK657rXW0pb+HYJPpKskii5RnL8UEO zVviDGgIKrEHkavVfZbP1PYA1Z+VQJxoYVWmMckxEU4D/ttgg9q8HMGi6CTbx8HZxejV2aRidO5 Q2DxmAfAokB2UKHZIppBcbZszz1P7Kl0yfRlUKeJuklq9GVYBs1Pim1fZgiXRyYL6b+tP/7ps5C ymjA4tKdOekiGiOceknMPhjV8Y9IqU+PmHDLm2KiN5LIetf6bnNXJkL52Q29NJ+eyMJwio0Ff1f Or/F8FVlAfl8FiM6wEM6D4BzMWoUdKQ4jZhMYgFdEkKNPohN1ckS5sGybaKegOQKCmz935a0+QB BPqzCoiaaZpYYAktHl5D4RtVolKmJtLGY2UYlkv0XkOyEjWDXeFzLnjTufDI846IzHPWWVDRGJ8 9EaICfw8ssZEJ1BjJ3qNb5yFKxCidh7aW86QQORcgAC80gN2aI+HZXv9ijN3+4SCsr/suRndazc kUa9Wh92buOEq+U0+WoJQBKJ5dKFUJram9X+6fl//fjCaCVByxDXkahkzeJk+k/CKqLT5eUqaWc XKmwVPbj0nWdMCahwZT6k0Suf4uVnDOSP/+bA9QNEaZGS34TkJrUBsyzRUcRoKoQpfFn6QVLS4H 6h9x5TdrOvNT+vg== X-Developer-Key: i=jlayton@kernel.org; a=openpgp; fpr=4BC0D7B24471B2A184EAF5D3000E684119568215 X-Rspam-User: X-Stat-Signature: yqdtoddkii5z6y4cti5oc8goy4hbqsxr X-Rspamd-Queue-Id: 9B0502000D X-Rspamd-Server: rspam02 X-HE-Tag: 1727904469-184353 X-HE-Meta: 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 +Nv0LSsD 5tnwQsu5RFPjwA4GaGgu5oidMAWJm2ruZB7pjWnHMZGVtWsoJUG2BT60xkPzoCQJq8lPC23UF0MyJqb9+zA3cCVhLk0XNWGK1mEMueALMGAMrLXyzG4wF0u9mSfYxqpWB0FhYaYdnsB7sYeGEIyYXaJ0sDQ5vV1E9jofQ98mSYEBHrv/c68SolvPtuF96c/qpew6OXpkdV7f05GlZfOoUVILGooOc9HlCXeelCh6Jg5b+G+WFQz1qz5IYXTz3vYrI3VSjH7TmD+nFcSBgH4EXoHafZ16VFxIoDfq0rVLG0s5Vk52jiPFArloEgwzsZUMpjrNrfeyr9Oe2OTGAVrAPexV4gdnSwXqMJGJmS/JuMd1Dp4j7myme6j+j09I9US2asNTXAu/hu8VGvS2lTMwY9yPo2LB3l4Pia1nX4igQFPGsxi0= X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: Add some tracepoints around various multigrain timestamp events. Reviewed-by: Josef Bacik Reviewed-by: Darrick J. Wong Reviewed-by: Jan Kara Reviewed-by: Steven Rostedt (Google) Tested-by: Randy Dunlap # documentation bits Signed-off-by: Jeff Layton --- fs/inode.c | 9 ++- fs/stat.c | 3 + include/trace/events/timestamp.h | 124 +++++++++++++++++++++++++++++++++++++++ 3 files changed, 135 insertions(+), 1 deletion(-) diff --git a/fs/inode.c b/fs/inode.c index 7d1ede60e549683502911f3bb3a3a079768e449b..f7a25c511d6b7069fa235135cf3bad0cda32815b 100644 --- a/fs/inode.c +++ b/fs/inode.c @@ -22,6 +22,9 @@ #include #include #include +#define CREATE_TRACE_POINTS +#include + #include "internal.h" /* @@ -2603,6 +2606,7 @@ EXPORT_SYMBOL(inode_nohighmem); struct timespec64 inode_set_ctime_to_ts(struct inode *inode, struct timespec64 ts) { + trace_inode_set_ctime_to_ts(inode, &ts); set_normalized_timespec64(&ts, ts.tv_sec, ts.tv_nsec); inode->i_ctime_sec = ts.tv_sec; inode->i_ctime_nsec = ts.tv_nsec; @@ -2689,14 +2693,17 @@ struct timespec64 inode_set_ctime_current(struct inode *inode) } /* No need to cmpxchg if it's exactly the same */ - if (cns == now.tv_nsec && inode->i_ctime_sec == now.tv_sec) + if (cns == now.tv_nsec && inode->i_ctime_sec == now.tv_sec) { + trace_ctime_xchg_skip(inode, &now); goto out; + } cur = cns; retry: /* Try to swap the nsec value into place. */ if (try_cmpxchg(&inode->i_ctime_nsec, &cur, now.tv_nsec)) { /* If swap occurred, then we're (mostly) done */ inode->i_ctime_sec = now.tv_sec; + trace_ctime_ns_xchg(inode, cns, now.tv_nsec, cur); } else { /* * Was the change due to someone marking the old ctime QUERIED? diff --git a/fs/stat.c b/fs/stat.c index dd480bf51a2a764e5eb1d0a213c5ec8b640db911..6eb6c39d003755f9e602996ed93dcbd863847820 100644 --- a/fs/stat.c +++ b/fs/stat.c @@ -23,6 +23,8 @@ #include #include +#include + #include "internal.h" #include "mount.h" @@ -56,6 +58,7 @@ void fill_mg_cmtime(struct kstat *stat, u32 request_mask, struct inode *inode) if (!(stat->ctime.tv_nsec & I_CTIME_QUERIED)) stat->ctime.tv_nsec = ((u32)atomic_fetch_or(I_CTIME_QUERIED, pcn)); stat->ctime.tv_nsec &= ~I_CTIME_QUERIED; + trace_fill_mg_cmtime(inode, &stat->ctime, &stat->mtime); } EXPORT_SYMBOL(fill_mg_cmtime); diff --git a/include/trace/events/timestamp.h b/include/trace/events/timestamp.h new file mode 100644 index 0000000000000000000000000000000000000000..c9e5ec930054887a6a7bae8e487611b5ded33d71 --- /dev/null +++ b/include/trace/events/timestamp.h @@ -0,0 +1,124 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#undef TRACE_SYSTEM +#define TRACE_SYSTEM timestamp + +#if !defined(_TRACE_TIMESTAMP_H) || defined(TRACE_HEADER_MULTI_READ) +#define _TRACE_TIMESTAMP_H + +#include +#include + +#define CTIME_QUERIED_FLAGS \ + { I_CTIME_QUERIED, "Q" } + +DECLARE_EVENT_CLASS(ctime, + TP_PROTO(struct inode *inode, + struct timespec64 *ctime), + + TP_ARGS(inode, ctime), + + TP_STRUCT__entry( + __field(dev_t, dev) + __field(ino_t, ino) + __field(time64_t, ctime_s) + __field(u32, ctime_ns) + __field(u32, gen) + ), + + TP_fast_assign( + __entry->dev = inode->i_sb->s_dev; + __entry->ino = inode->i_ino; + __entry->gen = inode->i_generation; + __entry->ctime_s = ctime->tv_sec; + __entry->ctime_ns = ctime->tv_nsec; + ), + + TP_printk("ino=%d:%d:%ld:%u ctime=%lld.%u", + MAJOR(__entry->dev), MINOR(__entry->dev), __entry->ino, __entry->gen, + __entry->ctime_s, __entry->ctime_ns + ) +); + +DEFINE_EVENT(ctime, inode_set_ctime_to_ts, + TP_PROTO(struct inode *inode, + struct timespec64 *ctime), + TP_ARGS(inode, ctime)); + +DEFINE_EVENT(ctime, ctime_xchg_skip, + TP_PROTO(struct inode *inode, + struct timespec64 *ctime), + TP_ARGS(inode, ctime)); + +TRACE_EVENT(ctime_ns_xchg, + TP_PROTO(struct inode *inode, + u32 old, + u32 new, + u32 cur), + + TP_ARGS(inode, old, new, cur), + + TP_STRUCT__entry( + __field(dev_t, dev) + __field(ino_t, ino) + __field(u32, gen) + __field(u32, old) + __field(u32, new) + __field(u32, cur) + ), + + TP_fast_assign( + __entry->dev = inode->i_sb->s_dev; + __entry->ino = inode->i_ino; + __entry->gen = inode->i_generation; + __entry->old = old; + __entry->new = new; + __entry->cur = cur; + ), + + TP_printk("ino=%d:%d:%ld:%u old=%u:%s new=%u cur=%u:%s", + MAJOR(__entry->dev), MINOR(__entry->dev), __entry->ino, __entry->gen, + __entry->old & ~I_CTIME_QUERIED, + __print_flags(__entry->old & I_CTIME_QUERIED, "|", CTIME_QUERIED_FLAGS), + __entry->new, + __entry->cur & ~I_CTIME_QUERIED, + __print_flags(__entry->cur & I_CTIME_QUERIED, "|", CTIME_QUERIED_FLAGS) + ) +); + +TRACE_EVENT(fill_mg_cmtime, + TP_PROTO(struct inode *inode, + struct timespec64 *ctime, + struct timespec64 *mtime), + + TP_ARGS(inode, ctime, mtime), + + TP_STRUCT__entry( + __field(dev_t, dev) + __field(ino_t, ino) + __field(time64_t, ctime_s) + __field(time64_t, mtime_s) + __field(u32, ctime_ns) + __field(u32, mtime_ns) + __field(u32, gen) + ), + + TP_fast_assign( + __entry->dev = inode->i_sb->s_dev; + __entry->ino = inode->i_ino; + __entry->gen = inode->i_generation; + __entry->ctime_s = ctime->tv_sec; + __entry->mtime_s = mtime->tv_sec; + __entry->ctime_ns = ctime->tv_nsec; + __entry->mtime_ns = mtime->tv_nsec; + ), + + TP_printk("ino=%d:%d:%ld:%u ctime=%lld.%u mtime=%lld.%u", + MAJOR(__entry->dev), MINOR(__entry->dev), __entry->ino, __entry->gen, + __entry->ctime_s, __entry->ctime_ns, + __entry->mtime_s, __entry->mtime_ns + ) +); +#endif /* _TRACE_TIMESTAMP_H */ + +/* This part must be outside protection */ +#include