tracing/treewide: Remove second parameter of __assign_str()

With the rework of how the __string() handles dynamic strings where it
saves off the source string in field in the helper structure[1], the
assignment of that value to the trace event field is stored in the helper
value and does not need to be passed in again.

This means that with:

  __string(field, mystring)

Which use to be assigned with __assign_str(field, mystring), no longer
needs the second parameter and it is unused. With this, __assign_str()
will now only get a single parameter.

There's over 700 users of __assign_str() and because coccinelle does not
handle the TRACE_EVENT() macro I ended up using the following sed script:

  git grep -l __assign_str | while read a ; do
      sed -e 's/\(__assign_str([^,]*[^ ,]\) *,[^;]*/\1)/' $a > /tmp/test-file;
      mv /tmp/test-file $a;
  done

I then searched for __assign_str() that did not end with ';' as those
were multi line assignments that the sed script above would fail to catch.

Note, the same updates will need to be done for:

  __assign_str_len()
  __assign_rel_str()
  __assign_rel_str_len()

I tested this with both an allmodconfig and an allyesconfig (build only for both).

[1] https://lore.kernel.org/linux-trace-kernel/20240222211442.634192653@goodmis.org/

Link: https://lore.kernel.org/linux-trace-kernel/20240516133454.681ba6a0@rorschach.local.home

Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Julia Lawall <Julia.Lawall@inria.fr>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Acked-by: Jani Nikula <jani.nikula@intel.com>
Acked-by: Christian König <christian.koenig@amd.com> for the amdgpu parts.
Acked-by: Thomas Hellström <thomas.hellstrom@linux.intel.com> #for
Acked-by: Rafael J. Wysocki <rafael@kernel.org> # for thermal
Acked-by: Takashi Iwai <tiwai@suse.de>
Acked-by: Darrick J. Wong <djwong@kernel.org>	# xfs
Tested-by: Guenter Roeck <linux@roeck-us.net>

1 files changed, 7 insertions, 7 deletions

diff --git a/include/trace/events/io_uring.h b/include/trace/events/io_uring.h
index e948df7ce625..412c9c210a32 100644
--- a/include/trace/events/io_uring.h
+++ b/include/trace/events/io_uring.h
@@ -164,7 +164,7 @@ TRACE_EVENT(io_uring_queue_async_work,
 		__entry->work		= &req->work;
 		__entry->rw		= rw;
 
-		__assign_str(op_str, io_uring_get_opcode(req->opcode));
+		__assign_str(op_str);
 	),
 
 	TP_printk("ring %p, request %p, user_data 0x%llx, opcode %s, flags 0x%llx, %s queue, work %p",
@@ -202,7 +202,7 @@ TRACE_EVENT(io_uring_defer,
 		__entry->data	= req->cqe.user_data;
 		__entry->opcode	= req->opcode;
 
-		__assign_str(op_str, io_uring_get_opcode(req->opcode));
+		__assign_str(op_str);
 	),
 
 	TP_printk("ring %p, request %p, user_data 0x%llx, opcode %s",
@@ -303,7 +303,7 @@ TRACE_EVENT(io_uring_fail_link,
 		__entry->opcode		= req->opcode;
 		__entry->link		= link;
 
-		__assign_str(op_str, io_uring_get_opcode(req->opcode));
+		__assign_str(op_str);
 	),
 
 	TP_printk("ring %p, request %p, user_data 0x%llx, opcode %s, link %p",
@@ -392,7 +392,7 @@ TRACE_EVENT(io_uring_submit_req,
 		__entry->flags		= (__force unsigned long long) req->flags;
 		__entry->sq_thread	= req->ctx->flags & IORING_SETUP_SQPOLL;
 
-		__assign_str(op_str, io_uring_get_opcode(req->opcode));
+		__assign_str(op_str);
 	),
 
 	TP_printk("ring %p, req %p, user_data 0x%llx, opcode %s, flags 0x%llx, "
@@ -436,7 +436,7 @@ TRACE_EVENT(io_uring_poll_arm,
 		__entry->mask		= mask;
 		__entry->events		= events;
 
-		__assign_str(op_str, io_uring_get_opcode(req->opcode));
+		__assign_str(op_str);
 	),
 
 	TP_printk("ring %p, req %p, user_data 0x%llx, opcode %s, mask 0x%x, events 0x%x",
@@ -475,7 +475,7 @@ TRACE_EVENT(io_uring_task_add,
 		__entry->opcode		= req->opcode;
 		__entry->mask		= mask;
 
-		__assign_str(op_str, io_uring_get_opcode(req->opcode));
+		__assign_str(op_str);
 	),
 
 	TP_printk("ring %p, req %p, user_data 0x%llx, opcode %s, mask %x",
@@ -538,7 +538,7 @@ TRACE_EVENT(io_uring_req_failed,
 		__entry->addr3		= sqe->addr3;
 		__entry->error		= error;
 
-		__assign_str(op_str, io_uring_get_opcode(sqe->opcode));
+		__assign_str(op_str);
 	),
 
 	TP_printk("ring %p, req %p, user_data 0x%llx, "