From nobody Fri Dec 19 22:01:24 2025 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 6C50F16C844; Thu, 11 Jul 2024 11:08:31 +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=1720696111; cv=none; b=AUwD7wHGz/Dlu+HpRnrf8smLuytUWban6zlHYIhF82WMhyJLoYj9VeVZpNI/ZmX2GGlD9yEzaWPCGzXpuV1V6CozPq1vZNd7gJnye8DywQuHiiCaRGGP+Qfhb1jCpL2YbBlBKjpprFZajkl10Uvcf2UIh3lWfwV+YVE336yd0oY= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1720696111; c=relaxed/simple; bh=rFzpgz1HqOKOCLh7b0SiDnaZS+NN3RBwFhHtuP1qUx4=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=AxGOC2mJHGkStA/01bvAuXZyx97tsPJTlM+ZB+M4NuN0Dd1FKsrygM2Ly1cUVRpaN0PBIKZiW+WW/tLgjoRmd2wckT2wbFgU3/1oPP4fC2+JrbzX9pFCjYuWUHHLrvbRTgIjT1thnLbtpMYgEIbJjSRDiy8AtgC1SI73j7VPuCY= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=CLLmbufx; 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="CLLmbufx" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 28D80C4AF07; Thu, 11 Jul 2024 11:08:28 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1720696111; bh=rFzpgz1HqOKOCLh7b0SiDnaZS+NN3RBwFhHtuP1qUx4=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=CLLmbufxrMwqRIxsj3EShlbrXkeTe6QolAUV6OjeFmXNDxMrS8FgaZD5fet1zUGYK EuTAGivoIefR/QittNO1F0NVIxe/dS51KBHibbHueFnUadb5ve6vJiRuNL2BMH5unO bLpDY+VzZFC8jCXRma6W6JQ8FpSb3gi5uf6XgsV7RdM829lo6SghJDd4296X49b5Gp LRQ2TDjlvJBkDsNpa9lfKHTLunLNPiPQi9eaelK17ZwAOtk9XL3AgFLnOraT72P6Z8 eL1ItkUDt2fNUTMY8+d2jrdYOaOqk9huYtOczCijmsagZL4hsS518H2PdT4GMoXDYL GB+1wxSKonsRA== From: Jeff Layton Date: Thu, 11 Jul 2024 07:08:06 -0400 Subject: [PATCH v5 2/9] fs: tracepoints around multigrain timestamp events Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20240711-mgtime-v5-2-37bb5b465feb@kernel.org> References: <20240711-mgtime-v5-0-37bb5b465feb@kernel.org> In-Reply-To: <20240711-mgtime-v5-0-37bb5b465feb@kernel.org> To: Alexander Viro , Christian Brauner , Jan Kara , Steven Rostedt , Masami Hiramatsu , Mathieu Desnoyers , Chandan Babu R , "Darrick J. Wong" , Theodore Ts'o , Andreas Dilger , Chris Mason , Josef Bacik , David Sterba , Hugh Dickins , Andrew Morton , Jonathan Corbet Cc: Dave Chinner , Andi Kleen , Christoph Hellwig , Uros Bizjak , Kent Overstreet , Arnd Bergmann , Randy Dunlap , kernel-team@fb.com, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org, linux-xfs@vger.kernel.org, linux-ext4@vger.kernel.org, linux-btrfs@vger.kernel.org, linux-mm@kvack.org, linux-nfs@vger.kernel.org, linux-doc@vger.kernel.org, Jeff Layton X-Mailer: b4 0.13.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=5096; i=jlayton@kernel.org; h=from:subject:message-id; bh=rFzpgz1HqOKOCLh7b0SiDnaZS+NN3RBwFhHtuP1qUx4=; b=owEBbQKS/ZANAwAIAQAOaEEZVoIVAcsmYgBmj70kIZqRBAr9twF69KZlGMkMn1TAN28mNNhTf ngIzrb7jvWJAjMEAAEIAB0WIQRLwNeyRHGyoYTq9dMADmhBGVaCFQUCZo+9JAAKCRAADmhBGVaC FX5SD/9yMgo83hVnTouqwh7Wudzs0Jud5XixMFsw35LiO08WfJQztDhsi7MJ6lxuIejoTHfuqus zAkkVjU1NHU1aPGZM1LaW8NY+PM5Vm0rg1H3Tp8LWaxM4u/kapfjM0f6xep+yI75SHRBm2T00Yu I0nrE8Ymxm8IwMju/5dPeqZG4gWibKcorgyLgv4TAmwfmidRhjYRIALqhKMAN+Zc2OCBLG48VMS foedmx1f1jk/Kv5n9NDlIFT6BNGhZrGahDsqXM5UaTVTksmsnXUL/o/neOWINHggU6rvsjS72SL ygap7ep9ZUCBW7Lh8t3Zm/htJpqnwBw6c7NvDCjFa4JBYo4v+6Jqbxkgy1qO/A7rCLhmnfQE2sv /SnXaHKUznyFIl0sOa4xvOln1B14jAlfpxmcUE/e3NWkb6Bzb+TxMujcTXnuVFUrepr/WsCnsU7 gzVw9Q/HcugitbGMkQgmeWtGtGfYHKUmf+LPetEcK8lPO95Gq5Bk5KRgVfoPTN5hX9vX8vVq36J TFbun/sDhI9A7eWtnr7ZkYbo9D71S6Iq+FQGQf3WeWlWqx77ThDn/39obkMI2vV/2/95kFnM+hw G1nCZSOkBoc/K5bQqsbxktIJueJou5XmijV4ZvXD0O4dC9kciGPM5YYI3NrMs3YdqjZwhI9KyRG 9mD08b4tXRCD0fg== X-Developer-Key: i=jlayton@kernel.org; a=openpgp; fpr=4BC0D7B24471B2A184EAF5D3000E684119568215 Add some tracepoints around various multigrain timestamp events. Signed-off-by: Jeff Layton --- fs/inode.c | 5 ++ fs/stat.c | 3 ++ include/trace/events/timestamp.h | 109 +++++++++++++++++++++++++++++++++++= ++++ 3 files changed, 117 insertions(+) diff --git a/fs/inode.c b/fs/inode.c index 2b5889ff7b36..81b45e0a95a6 100644 --- a/fs/inode.c +++ b/fs/inode.c @@ -22,6 +22,9 @@ #include #include #include +#define CREATE_TRACE_POINTS +#include + #include "internal.h" =20 /* @@ -2571,6 +2574,7 @@ struct timespec64 inode_set_ctime_to_ts(struct inode = *inode, struct timespec64 t { inode->i_ctime_sec =3D ts.tv_sec; inode->i_ctime_nsec =3D ts.tv_nsec & ~I_CTIME_QUERIED; + trace_inode_set_ctime_to_ts(inode, &ts); return ts; } EXPORT_SYMBOL(inode_set_ctime_to_ts); @@ -2670,6 +2674,7 @@ struct timespec64 inode_set_ctime_current(struct inod= e *inode) if (try_cmpxchg(&inode->i_ctime_nsec, &cur, now_ts.tv_nsec)) { /* If swap occurred, then we're (mostly) done */ inode->i_ctime_sec =3D now_ts.tv_sec; + trace_ctime_ns_xchg(inode, cns, now_ts.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 df7fdd3afed9..552dfd67688b 100644 --- a/fs/stat.c +++ b/fs/stat.c @@ -23,6 +23,8 @@ #include #include =20 +#include + #include "internal.h" #include "mount.h" =20 @@ -49,6 +51,7 @@ void fill_mg_cmtime(struct kstat *stat, u32 request_mask,= struct inode *inode) stat->mtime =3D inode_get_mtime(inode); stat->ctime.tv_sec =3D inode->i_ctime_sec; stat->ctime.tv_nsec =3D ((u32)atomic_fetch_or(I_CTIME_QUERIED, pcn)) & ~I= _CTIME_QUERIED; + trace_fill_mg_cmtime(inode, &stat->ctime, &stat->mtime); } EXPORT_SYMBOL(fill_mg_cmtime); =20 diff --git a/include/trace/events/timestamp.h b/include/trace/events/timest= amp.h new file mode 100644 index 000000000000..3a603190b46c --- /dev/null +++ b/include/trace/events/timestamp.h @@ -0,0 +1,109 @@ +/* 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 + +TRACE_EVENT(inode_set_ctime_to_ts, + 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 =3D inode->i_sb->s_dev; + __entry->ino =3D inode->i_ino; + __entry->gen =3D inode->i_generation; + __entry->ctime_s =3D ctime->tv_sec; + __entry->ctime_ns =3D ctime->tv_nsec; + ), + + TP_printk("ino=3D%d:%d:%ld:%u ctime=3D%lld.%u", + MAJOR(__entry->dev), MINOR(__entry->dev), __entry->ino, __entry->gen, + __entry->ctime_s, __entry->ctime_ns + ) +); + +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 =3D inode->i_sb->s_dev; + __entry->ino =3D inode->i_ino; + __entry->gen =3D inode->i_generation; + __entry->old =3D old; + __entry->new =3D new; + __entry->cur =3D cur; + ), + + TP_printk("ino=3D%d:%d:%ld:%u old=3D%u:%c new=3D%u cur=3D%u:%c", + MAJOR(__entry->dev), MINOR(__entry->dev), __entry->ino, __entry->gen, + __entry->old & ~I_CTIME_QUERIED, __entry->old & I_CTIME_QUERIED ? 'Q' : = '-', + __entry->new, + __entry->cur & ~I_CTIME_QUERIED, __entry->cur & I_CTIME_QUERIED ? 'Q' : = '-' + ) +); + +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 =3D inode->i_sb->s_dev; + __entry->ino =3D inode->i_ino; + __entry->gen =3D inode->i_generation; + __entry->ctime_s =3D ctime->tv_sec; + __entry->mtime_s =3D mtime->tv_sec; + __entry->ctime_ns =3D ctime->tv_nsec; + __entry->mtime_ns =3D mtime->tv_nsec; + ), + + TP_printk("ino=3D%d:%d:%ld:%u ctime=3D%lld.%u mtime=3D%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 --=20 2.45.2