linux-kernel - [PATCH v3 12/16] blktrace: move ftrace blk_io_tracer to blk_io

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Message-ID: <20251015105435.527088-13-johannes.thumshirn@wdc.com>
Date: Wed, 15 Oct 2025 12:54:31 +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 12/16] blktrace: move ftrace blk_io_tracer to blk_io_trace2

Move ftrace's blk_io_tracer to the new blk_io_trace2 infrastructure.

Signed-off-by: Johannes Thumshirn <johannes.thumshirn@....com>
---
 kernel/trace/blktrace.c | 16 ++++++++--------
 1 file changed, 8 insertions(+), 8 deletions(-)

diff --git a/kernel/trace/blktrace.c b/kernel/trace/blktrace.c
index 756d2c7dfdf2..8ffb218e9fb7 100644
--- a/kernel/trace/blktrace.c
+++ b/kernel/trace/blktrace.c
@@ -1224,7 +1224,7 @@ static void blk_unregister_tracepoints(void)
  * struct blk_io_tracer formatting routines
  */
 
-static void fill_rwbs(char *rwbs, const struct blk_io_trace *t)
+static void fill_rwbs(char *rwbs, const struct blk_io_trace2 *t)
 {
 	int i = 0;
 	int tc = t->action >> BLK_TC_SHIFT;
@@ -1259,9 +1259,9 @@ static void fill_rwbs(char *rwbs, const struct blk_io_trace *t)
 }
 
 static inline
-const struct blk_io_trace *te_blk_io_trace(const struct trace_entry *ent)
+const struct blk_io_trace2 *te_blk_io_trace(const struct trace_entry *ent)
 {
-	return (const struct blk_io_trace *)ent;
+	return (const struct blk_io_trace2 *)ent;
 }
 
 static inline const void *pdu_start(const struct trace_entry *ent, bool has_cg)
@@ -1320,7 +1320,7 @@ static void blk_log_action_classic(struct trace_iterator *iter, const char *act,
 	unsigned long long ts  = iter->ts;
 	unsigned long nsec_rem = do_div(ts, NSEC_PER_SEC);
 	unsigned secs	       = (unsigned long)ts;
-	const struct blk_io_trace *t = te_blk_io_trace(iter->ent);
+	const struct blk_io_trace2 *t = te_blk_io_trace(iter->ent);
 
 	fill_rwbs(rwbs, t);
 
@@ -1334,7 +1334,7 @@ static void blk_log_action(struct trace_iterator *iter, const char *act,
 	bool has_cg)
 {
 	char rwbs[RWBS_LEN];
-	const struct blk_io_trace *t = te_blk_io_trace(iter->ent);
+	const struct blk_io_trace2 *t = te_blk_io_trace(iter->ent);
 
 	fill_rwbs(rwbs, t);
 	if (has_cg) {
@@ -1555,7 +1555,7 @@ static enum print_line_t print_one_line(struct trace_iterator *iter,
 {
 	struct trace_array *tr = iter->tr;
 	struct trace_seq *s = &iter->seq;
-	const struct blk_io_trace *t;
+	const struct blk_io_trace2 *t;
 	u16 what;
 	bool long_act;
 	blk_log_action_t *log_action;
@@ -1592,8 +1592,8 @@ static enum print_line_t blk_trace_event_print(struct trace_iterator *iter,
 static void blk_trace_synthesize_old_trace(struct trace_iterator *iter)
 {
 	struct trace_seq *s = &iter->seq;
-	struct blk_io_trace *t = (struct blk_io_trace *)iter->ent;
-	const int offset = offsetof(struct blk_io_trace, sector);
+	struct blk_io_trace2 *t = (struct blk_io_trace2 *)iter->ent;
+	const int offset = offsetof(struct blk_io_trace2, sector);
 	struct blk_io_trace old = {
 		.magic	  = BLK_IO_TRACE_MAGIC | BLK_IO_TRACE_VERSION,
 		.time     = iter->ts,
-- 
2.51.0