linux-kernel - [PATCH v2 11/15] blktrace: add block trace commands for zone operations

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Message-ID: <20250925150231.67342-12-johannes.thumshirn@wdc.com>
Date: Thu, 25 Sep 2025 17:02:27 +0200
From: Johannes Thumshirn <johannes.thumshirn@....com>
To: Jens Axboe <axboe@...nel.dk>
Cc: Steven Rostedt <rostedt@...dmis.org>,
	Masami Hiramatsu <mhiramat@...nel.org>,
	Mathieu Desnoyers <mathieu.desnoyers@...icios.com>,
	linux-block@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linux-trace-kernel@...r.kernel.org,
	linux-btrace@...r.kernel.org,
	John Garry <john.g.garry@...cle.com>,
	Hannes Reinecke <hare@...e.de>,
	Damien Le Moal <dlemoal@...nel.org>,
	Christoph Hellwig <hch@....de>,
	Naohiro Aota <naohiro.aota@....com>,
	Shinichiro Kawasaki <shinichiro.kawasaki@....com>,
	Chaitanya Kulkarni <chaitanyak@...dia.com>,
	"Martin K . Petersen" <martin.petersen@...cle.com>,
	Johannes Thumshirn <johannes.thumshirn@....com>
Subject: [PATCH v2 11/15] blktrace: add block trace commands for zone operations

Add block trace commands for zone operations. These are added as a
separate set of 'block trace commands' shifted by 32bit so that they do
not interfere with the old 16bit wide trace command field in 'struct
blk_io_trace' action.

Signed-off-by: Johannes Thumshirn <johannes.thumshirn@....com>
---
 include/uapi/linux/blktrace_api.h | 13 ++++++++++++-
 kernel/trace/blktrace.c           | 18 ++++++++++++++++++
 2 files changed, 30 insertions(+), 1 deletion(-)

diff --git a/include/uapi/linux/blktrace_api.h b/include/uapi/linux/blktrace_api.h
index d58ef484de49..0f336140ce4e 100644
--- a/include/uapi/linux/blktrace_api.h
+++ b/include/uapi/linux/blktrace_api.h
@@ -26,11 +26,22 @@ enum blktrace_cat {
 	BLK_TC_DRV_DATA	= 1 << 14,	/* binary per-driver data */
 	BLK_TC_FUA	= 1 << 15,	/* fua requests */
 
-	BLK_TC_END	= 1 << 15,	/* we've run out of bits! */
+	BLK_TC_END_V1	= 1 << 15,	/* we've run out of bits! */
+
+	BLK_TC_ZONE_APPEND	= 1 << 16ull,  	/* zone append */
+	BLK_TC_ZONE_RESET	= 1 << 17ull,	/* zone reset */
+	BLK_TC_ZONE_RESET_ALL	= 1 << 18ull,	/* zone reset all */
+	BLK_TC_ZONE_FINISH	= 1 << 19ull,	/* zone finish */
+	BLK_TC_ZONE_OPEN	= 1 << 20ull,	/* zone open */
+	BLK_TC_ZONE_CLOSE	= 1 << 21ull,	/* zone close */
+
+	BLK_TC_END_V2		= 1 << 21ull,
 };
 
 #define BLK_TC_SHIFT		(16)
 #define BLK_TC_ACT(act)		((act) << BLK_TC_SHIFT)
+#define BLK_TC_SHIFT2		(32)
+#define BLK_TC_ACT2(act)	((u64)(act) << BLK_TC_SHIFT2)
 
 /*
  * Basic trace actions
diff --git a/kernel/trace/blktrace.c b/kernel/trace/blktrace.c
index 82ad626d6202..62f6cfcee4f6 100644
--- a/kernel/trace/blktrace.c
+++ b/kernel/trace/blktrace.c
@@ -333,6 +333,24 @@ static void __blk_add_trace(struct blk_trace *bt, sector_t sector, int bytes,
 	case REQ_OP_FLUSH:
 		what |= BLK_TC_ACT(BLK_TC_FLUSH);
 		break;
+	case REQ_OP_ZONE_APPEND:
+		what |= BLK_TC_ACT2(BLK_TC_ZONE_APPEND);
+		break;
+	case REQ_OP_ZONE_RESET:
+		what |= BLK_TC_ACT2(BLK_TC_ZONE_RESET);
+		break;
+	case REQ_OP_ZONE_RESET_ALL:
+		what |= BLK_TC_ACT2(BLK_TC_ZONE_RESET_ALL);
+		break;
+	case REQ_OP_ZONE_FINISH:
+		what |= BLK_TC_ACT2(BLK_TC_ZONE_FINISH);
+		break;
+	case REQ_OP_ZONE_OPEN:
+		what |= BLK_TC_ACT2(BLK_TC_ZONE_OPEN);
+		break;
+	case REQ_OP_ZONE_CLOSE:
+		what |= BLK_TC_ACT2(BLK_TC_ZONE_CLOSE);
+		break;
 	default:
 		break;
 	}
-- 
2.51.0