Re: [PATCH] hns3: work around stack size warning

[Jijie Shao]

on 2025/6/12 0:36, Arnd Bergmann wrote:
> On Wed, Jun 11, 2025, at 04:10, Jijie Shao wrote:
> > on 2025/6/10 17:21, Arnd Bergmann wrote:
> > > From: Arnd Bergmann <arnd@xxxxxxxx>
> > > Annotate hns3_dbg_tx_spare_info() as noinline_for_stack to force the
> > > behavior that gcc has, regardless of the compiler.
> > >
> > > Ideally all the functions in here would be changed to avoid on-stack
> > > output buffers.
> > Would you please help test whether the following changes have solved
> > your problem,
> > And I'm not sure if this patch should be sent to net or net-next...
> Your patch arrived with whitespace corruption here, so I could not
> try it, but I'm sure it would help avoid the warning.
>
> However, this is not what meant with my suggestion: you already
> allocate a temporary buffer in hns3_dbg_open() and I would
> expect it to be possible to read into that buffer directly
> without a second temporary buffer (on stack or kmalloc).
>
> The normal way of doing this would be to use the infrastructure
> from seq_file and then seq_printf() and not have any extra buffers
> on top of that.
>
>        Arnd


Hi,

seq_file is good. But the change is quite big.
I need to discuss it internally, and it may not be completed so quickly.
I will also need consider the maintainer's suggestion.

Thanks,
Jijie Shao