Re: [PATCH] ring-buffer: make the const read-only 'type' static

Le 14/07/2025 à 18:15, Steven Rostedt a écrit :

On Mon, 14 Jul 2025 17:08:58 +0100
Colin Ian King [off-list ref] wrote:

quoted

Don't populate the read-only 'type' on the stack at run time,
instead make it static.

Hmm, why not?

-- Steve

This is more efficient because there is no need to copy things on the 
stack at run-time.

It also makes binary slightly smaller.

On my x86_64, with allmodconfig:
Before:
======
  229194	 924492	  35104	1188790	 1223b6	kernel/trace/ring_buffer.o

After:
=====
  228873	 924268	  35040	1188181	 122155	kernel/trace/ring_buffer.o

CJ