linux-kernel - [PATCH v3 11/16] blktrace: move trace_note to blk_io

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Message-ID: <20251015105435.527088-12-johannes.thumshirn@wdc.com>
Date: Wed, 15 Oct 2025 12:54:30 +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 11/16] blktrace: move trace_note to blk_io_trace2

Move trace_note() to the new blk_io_trace2 infrastructure.

Signed-off-by: Johannes Thumshirn <johannes.thumshirn@....com>
---
 kernel/trace/blktrace.c | 14 +++++++-------
 1 file changed, 7 insertions(+), 7 deletions(-)

diff --git a/kernel/trace/blktrace.c b/kernel/trace/blktrace.c
index 074a7d77158c..756d2c7dfdf2 100644
--- a/kernel/trace/blktrace.c
+++ b/kernel/trace/blktrace.c
@@ -173,18 +173,18 @@ static void relay_blktrace_event(struct blk_trace *bt, unsigned long sequence,
 static void trace_note(struct blk_trace *bt, pid_t pid, u64 action,
 		       const void *data, size_t len, u64 cgid)
 {
-	struct blk_io_trace *t;
 	struct ring_buffer_event *event = NULL;
 	struct trace_buffer *buffer = NULL;
 	unsigned int trace_ctx = 0;
 	int cpu = smp_processor_id();
 	bool blk_tracer = blk_tracer_enabled;
 	ssize_t cgid_len = cgid ? sizeof(cgid) : 0;
-	size_t trace_len;
 
-	trace_len = sizeof(*t) + cgid_len + len;
 	action = lower_32_bits(action | (cgid ? __BLK_TN_CGROUP : 0));
 	if (blk_tracer) {
+		struct blk_io_trace2 *t;
+		size_t trace_len = sizeof(*t) + cgid_len + len;
+
 		buffer = blk_tr->array_buffer.buffer;
 		trace_ctx = tracing_gen_ctx_flags(0);
 		event = trace_buffer_lock_reserve(buffer, TRACE_BLK,
@@ -192,9 +192,9 @@ static void trace_note(struct blk_trace *bt, pid_t pid, u64 action,
 		if (!event)
 			return;
 		t = ring_buffer_event_data(event);
-		record_blktrace_event(t, pid, cpu, 0, 0,
-				      action, bt->dev, 0, cgid, cgid_len,
-				      (void *)data, len);
+		record_blktrace_event2(t, pid, cpu, 0, 0,
+				       action, bt->dev, 0, cgid, cgid_len,
+				       (void *)data, len);
 		trace_buffer_unlock_commit(blk_tr, buffer, event, trace_ctx);
 		return;
 	}
@@ -359,7 +359,7 @@ static void __blk_add_trace(struct blk_trace *bt, sector_t sector, int bytes,
 
 		buffer = blk_tr->array_buffer.buffer;
 		trace_ctx = tracing_gen_ctx_flags(0);
-		trace_len = sizeof(struct blk_io_trace) + pdu_len + cgid_len;
+		trace_len = sizeof(struct blk_io_trace2) + pdu_len + cgid_len;
 		event = trace_buffer_lock_reserve(buffer, TRACE_BLK,
 						  trace_len, trace_ctx);
 		if (!event)
-- 
2.51.0