lkml.org 
[lkml]   [2006]   [Mar]   [21]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH 1/2]Blackfin archtecture patche for 2.6.16
"Luke Yang" <luke.adi@gmail.com> wrote:
>
> This is the Blackfin archtecture patch for kernel 2.6.16.
>

There are few practical issues we need to be concerned about with new
architectures.

- We don't want to be putting 44000 lines of new code in the kernel and
then have it rot. Who will support this in the long-term? What
resources are behind it? IOW: what can you say to convince us that it
won't rot?

The lack of a MAINTAINERS entry doesn't inspire confidence..

- How widespread/popular is the blackfin? Are many devices using it?
How old/mature is it? Is it a new thing or is it near end-of-life?

It's a cost/benefit thing. It costs us to add code to the kenrel. How
many people would benefit from us doing that?

- Are easy-to-install x86 cross-build packages available? If not, are
there straightforward instructions anywhere to guide people in generating
a cross-build setup?

<looks>

OK, blackfin.uclinux.org seems to have that. Does binutils support
blackfin?

- A lot of this code appears to come from Analog Devices, but you don't ;)
We'd need to see some sort of authorisation from the original authors
for the inclusion of their code. Preferably in the form of
Signed-off-by:s.

> http://blackfin.uclinux.org/frs/download.php/810/blackfin-arch.patch.tar.bz2

As I said, 44kloc ;)

- Do you really need to support old_mmap()?

- It would be preferable to use the generic IRQ infrastructure in kernel/irq/

- Too much use of open-coded `volatile'. The objective should be to have
zero occurrences in .c files. And volatile sometimes creates suspicion
even when it's used in .h files.

- bug: coreb_ioctl() does copy_from_user() and down() inside spinlock.

- err, coreb_ioctl() does down(&file->f_dentry->d_inode->i_sem); but
that's a mutex now, so I assume that's actually dead code?


-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2006-03-21 12:20    [W:0.682 / U:0.076 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site