From patchwork Fri Jul 5 17:02:36 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jeff Layton X-Patchwork-Id: 13725442 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 6AAF116F0ED; Fri, 5 Jul 2024 17:03:02 +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=1720198982; cv=none; b=TPjWui6nc+TIXPzyap/uSybxY6dy+ZMK+IUMysV0F4r8fQkgNDS4j6YkCthhDJ3eGW1nJY8xp9PMN+WjitkqIlM0HVRjJBeA71jwhWyHDGr7FhQz36kf/qV9xIjX8kMTP/b70KE7L4LekQ3GTPSJC6YcU3+CVso2EVswkjLiabo= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1720198982; c=relaxed/simple; bh=GhiNb5Rp3y6E5eQ0/354yg7YEonNuQ8RCB0kW9t0l7g=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=IKLuMx/qdgozZbKQvIOyDveaetV+7cpNPG+rfq1lfFHWtGy1UTGSEAceStPT4mRgYEDNhdHrnnhE1ZySNbqW/umQmtuPgtmaFFDrI6AZ6zSoaBg8GphKfOiDhYu8oj7GurrUDJ1reJ8d5+3eT39rD2xJWmu838LkrlvQoUCWqhM= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=ZnLONj/h; 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="ZnLONj/h" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 911E9C4AF11; Fri, 5 Jul 2024 17:02:59 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1720198982; bh=GhiNb5Rp3y6E5eQ0/354yg7YEonNuQ8RCB0kW9t0l7g=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=ZnLONj/hu2KVW0C2XHKr7k9afRYizo1wBh8VyFbv6ftScL2Ormo4a9UKtrbGiSeSS PoI5PQCaHpTuoSTrDKP5he5ihIvvtoFAc6ilt5eyzV9glRuYhhm9ZktAIBuT0+khtr EFAl1SBZMinhW29ivH/MfynIvKVdLi/yjFVsB7EeMfYad3z6dEySQmSjERoKHJ06mX Im/Nl9fHCmlVprWKnFBsMw8ud2CgBY0PE7GNyApxhcUAq24Z1kjKlZH8g54uA4uTFZ BOzyalGDm7A03saSSO8tfje5/L5r9TNPf6k5dD4Fi1J9p38DofQYMWzckC+XTTT7sx y2VHIeElXje6w== From: Jeff Layton Date: Fri, 05 Jul 2024 13:02:36 -0400 Subject: [PATCH v3 2/9] fs: tracepoints around multigrain timestamp events Precedence: bulk X-Mailing-List: linux-btrfs@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20240705-mgtime-v3-2-85b2daa9b335@kernel.org> References: <20240705-mgtime-v3-0-85b2daa9b335@kernel.org> In-Reply-To: <20240705-mgtime-v3-0-85b2daa9b335@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 , 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=5043; i=jlayton@kernel.org; h=from:subject:message-id; bh=GhiNb5Rp3y6E5eQ0/354yg7YEonNuQ8RCB0kW9t0l7g=; b=owEBbQKS/ZANAwAIAQAOaEEZVoIVAcsmYgBmiCc8sugM77UpnbOVavEn9ip1g17NATieHZMGA YUffdzTePCJAjMEAAEIAB0WIQRLwNeyRHGyoYTq9dMADmhBGVaCFQUCZognPAAKCRAADmhBGVaC FZm9EACreEaIUiF7eQm7h3tdABL+r8H0QLz2l0niCCIEOV82RNNSH1PPunPbnZXlursqjT/Df7h Tj+NsqmueLXMQRE05FUgwYrlAoZbyVa+E/AwsiV/H4KZkYeEZklqMymNm8FJmLWCxbegb+bZC+9 bJxQxz8h+guQsrUKeq314xnP/2y/GvUkKkaG8ZyjK+i3gW3/uz4IqBVANMriISFjd6V4ZF12dcc BpOijtB8arPUZEL7FZCAxNBBTM7s8V00ttTkd/dc/UUQef/NZnDgWmvfJResQwiQ32IsDGcexPv 3Z1gNl7/sCsjz3IeVWJjncScJlTMrCc3yI5v2kNKdcObDBN08TBqA+uUc4/CHwALxAKqgm38z3F tztkbOcqO2RdIwXtqgeoiiQYO9s3IMtjk5uuUzqOQcSAWtg5/iav/BNIx0j1lRCKCz5e1ye+/cV F5iiqULV4t8Zr4KMJPpnw3u9MhwQ6pwyLQX6+L9X6Xkj1wYx7iU01EC60QkYYz7KXAYLanO/zPk UOAwp7NYPm0qGrD9v82FsTZAzE0VdPtHvD71q8yeswu0cOcRIxs6KTFoAetB9Bzbp3mGeB91pqt 3efIx93aokHK1m0vPmwjR/3cOs7smkpBvOatsmQV0C7IGarFno1qtnvTVDpz+PjYAN/84eI8iSq dmikcbxkhLycGBg== 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 844ff0750959..4ab7aee3558c 100644 --- a/fs/inode.c +++ b/fs/inode.c @@ -22,6 +22,9 @@ #include #include #include +#define CREATE_TRACE_POINTS +#include + #include "internal.h" /* @@ -2570,6 +2573,7 @@ struct timespec64 inode_set_ctime_to_ts(struct inode *inode, struct timespec64 t { inode->i_ctime_sec = ts.tv_sec; inode->i_ctime_nsec = ts.tv_nsec & ~I_CTIME_QUERIED; + trace_inode_set_ctime_to_ts(inode, &ts); return ts; } EXPORT_SYMBOL(inode_set_ctime_to_ts); @@ -2667,6 +2671,7 @@ struct timespec64 inode_set_ctime_current(struct inode *inode) retry: /* Try to swap the nsec value into place. */ cur = cmpxchg(&inode->i_ctime_nsec, cns, now_ts.tv_nsec); + trace_ctime_ns_xchg(inode, cns, now_ts.tv_nsec, cur); /* If swap occurred, then we're (mostly) done */ if (cur == cns) { 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 +#include + #include "internal.h" #include "mount.h" @@ -49,6 +51,7 @@ void fill_mg_cmtime(struct kstat *stat, u32 request_mask, struct inode *inode) stat->mtime = inode_get_mtime(inode); stat->ctime.tv_sec = inode->i_ctime_sec; stat->ctime.tv_nsec = ((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); diff --git a/include/trace/events/timestamp.h b/include/trace/events/timestamp.h new file mode 100644 index 000000000000..a004e5572673 --- /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(u32, gen) + __field(time64_t, ctime_s) + __field(u32, ctime_ns) + ), + + 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 + ) +); + +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:%c new=%u cur=%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(u32, gen) + __field(time64_t, ctime_s) + __field(time64_t, mtime_s) + __field(u32, ctime_ns) + __field(u32, mtime_ns) + ), + + 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