linux-kernel - [PATCH v3 13/16] blktrace: add block trace commands for zone operations

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Message-ID: <20251015105435.527088-14-johannes.thumshirn@wdc.com>
Date: Wed, 15 Oct 2025 12:54:32 +0200
From: Johannes Thumshirn <johannes.thumshirn@....com>
To: axboe@...nel.dk
Cc: chaitanyak@...dia.com,
	dlemoal@...nel.org,
	hare@...e.de,
	hch@....de,
	john.g.garry@...cle.com,
	linux-block@...r.kernel.org,
	linux-btrace@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linux-trace-kernel@...r.kernel.org,
	martin.petersen@...cle.com,
	mathieu.desnoyers@...icios.com,
	mhiramat@...nel.org,
	naohiro.aota@....com,
	rostedt@...dmis.org,
	shinichiro.kawasaki@....com,
	Johannes Thumshirn <johannes.thumshirn@....com>
Subject: [PATCH v3 13/16] blktrace: add block trace commands for zone operations

Add block trace commands for zone operations.

Signed-off-by: Johannes Thumshirn <johannes.thumshirn@....com>
---
 include/uapi/linux/blktrace_api.h | 13 +++++++++++--
 kernel/trace/blktrace.c           | 25 +++++++++++++++++++++----
 2 files changed, 32 insertions(+), 6 deletions(-)

diff --git a/include/uapi/linux/blktrace_api.h b/include/uapi/linux/blktrace_api.h
index 3a771b9802aa..925f78af939e 100644
--- a/include/uapi/linux/blktrace_api.h
+++ b/include/uapi/linux/blktrace_api.h
@@ -26,11 +26,20 @@ 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	= 1ull << 16,  	/* zone append */
+	BLK_TC_ZONE_RESET	= 1ull << 17,	/* zone reset */
+	BLK_TC_ZONE_RESET_ALL	= 1ull << 18,	/* zone reset all */
+	BLK_TC_ZONE_FINISH	= 1ull << 19,	/* zone finish */
+	BLK_TC_ZONE_OPEN	= 1ull << 20,	/* zone open */
+	BLK_TC_ZONE_CLOSE	= 1ull << 21,	/* zone close */
+
+	BLK_TC_END_V2		= 1ull << 21,
 };
 
 #define BLK_TC_SHIFT		(16)
-#define BLK_TC_ACT(act)		((act) << BLK_TC_SHIFT)
+#define BLK_TC_ACT(act)		((u64)(act) << BLK_TC_SHIFT)
 
 /*
  * Basic trace actions
diff --git a/kernel/trace/blktrace.c b/kernel/trace/blktrace.c
index 8ffb218e9fb7..90b225c5bad7 100644
--- a/kernel/trace/blktrace.c
+++ b/kernel/trace/blktrace.c
@@ -163,8 +163,8 @@ static void relay_blktrace_event(struct blk_trace *bt, unsigned long sequence,
 					     bytes, what, error, cgid, cgid_len,
 					     pdu_data, pdu_len);
 	return relay_blktrace_event1(bt, sequence, pid, cpu, sector, bytes,
-				     lower_32_bits(what), error, cgid, cgid_len,
-				     pdu_data, pdu_len);
+				     what, error, cgid, cgid_len, pdu_data,
+				     pdu_len);
 }
 
 /*
@@ -342,6 +342,24 @@ 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_ACT(BLK_TC_ZONE_APPEND);
+		break;
+	case REQ_OP_ZONE_RESET:
+		what |= BLK_TC_ACT(BLK_TC_ZONE_RESET);
+		break;
+	case REQ_OP_ZONE_RESET_ALL:
+		what |= BLK_TC_ACT(BLK_TC_ZONE_RESET_ALL);
+		break;
+	case REQ_OP_ZONE_FINISH:
+		what |= BLK_TC_ACT(BLK_TC_ZONE_FINISH);
+		break;
+	case REQ_OP_ZONE_OPEN:
+		what |= BLK_TC_ACT(BLK_TC_ZONE_OPEN);
+		break;
+	case REQ_OP_ZONE_CLOSE:
+		what |= BLK_TC_ACT(BLK_TC_ZONE_CLOSE);
+		break;
 	default:
 		break;
 	}
@@ -386,8 +404,7 @@ static void __blk_add_trace(struct blk_trace *bt, sector_t sector, int bytes,
 	sequence = per_cpu_ptr(bt->sequence, cpu);
 	(*sequence)++;
 	relay_blktrace_event(bt, *sequence, pid, cpu, sector, bytes,
-			     lower_32_bits(what), error, cgid, cgid_len,
-			     pdu_data, pdu_len);
+			     what, error, cgid, cgid_len, pdu_data, pdu_len);
 	local_irq_restore(flags);
 }
 
-- 
2.51.0