[PATCH v4] tools: copyfile: use 64k instead of 512 buffer

[Tom Rini]

On Tue, 09 Apr 2024 14:14:34 +0200, Ahelenia Ziemiańska wrote:

> This is a trivial but significant optimization:
> mkimage took >200ms (and 49489 writes (of which 49456 512)),
> now it takes  110ms (and   419 writes (of which   386 64k)).
> 
> sendfile is much more appropriate for this and is done in one syscall,
> but doesn't bring any significant speedups over 64k r/w
> at the 13M size ranges, so there's no need to introduce
> 	#if __linux__
> 	while((size = sendfile(fd_dst, fd_src, NULL, 128 * 1024 * 1024)) > 0)
> 		;
> 	if(size != -1) {
> 		ret = 0;
> 		goto out;
> 	}
> 	#endif
> 
> [...]

Applied to u-boot/master, thanks!

-- 
Tom