On Thu, Jun 06, 2024 at 11:20:58AM +0300, Jani Nikula wrote:
> On Thu, 06 Jun 2024, pengfuyuan <pengfuyuan@xxxxxxxxxx> wrote:
> > We do not call komeda_debugfs_init() and the debugfs core function
> > declaration if CONFIG_DEBUG_FS is not defined, but we should not
> > compile it either because the debugfs core function declaration is
> > not included.
> >
> > Reported-by: k2ci <kernel-bot@xxxxxxxxxx>
Can we see what the bot reported?
> > Signed-off-by: pengfuyuan <pengfuyuan@xxxxxxxxxx>
>
> An interesting alternative might actually be to remove *all* the
> CONFIG_DEBUG_FS conditional compilation from the file. Since the debugfs
> functions have no-op stubs for CONFIG_DEBUG_FS=n, the compiler will
> optimize the rest away, because they're no longer referenced. (For the
> same reason, I don't think this patch has an impact for code size.)
>
> The upside for removing conditional compilation is that you'll actually
> do build testing for both CONFIG_DEBUG_FS config values. Assuming most
> developers have it enabled, there's not a lot of testing going on for
> CONFIG_DEBUG_FS=n, and you might introduce build failures with the
> conditional compilation.
>
> Of course, up to Liviu to decide.
Yeah, I quite like the idea of removing the conditional compilation from
the file entirely.
Pengfuyuan, do you mind sending a new patch removing all the CONFIG_DEBUG_FS
from the file, rather than moving things around?
Best regards,
Liviu
>
>
> BR,
> Jani.
>
>
> > ---
> > drivers/gpu/drm/arm/display/komeda/komeda_dev.c | 2 +-
> > 1 file changed, 1 insertion(+), 1 deletion(-)
> >
> > diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_dev.c b/drivers/gpu/drm/arm/display/komeda/komeda_dev.c
> > index 14ee79becacb..7ada8e6f407c 100644
> > --- a/drivers/gpu/drm/arm/display/komeda/komeda_dev.c
> > +++ b/drivers/gpu/drm/arm/display/komeda/komeda_dev.c
> > @@ -21,6 +21,7 @@
> >
> > #include "komeda_dev.h"
> >
> > +#ifdef CONFIG_DEBUG_FS
> > static int komeda_register_show(struct seq_file *sf, void *x)
> > {
> > struct komeda_dev *mdev = sf->private;
> > @@ -43,7 +44,6 @@ static int komeda_register_show(struct seq_file *sf, void *x)
> >
> > DEFINE_SHOW_ATTRIBUTE(komeda_register);
> >
> > -#ifdef CONFIG_DEBUG_FS
> > static void komeda_debugfs_init(struct komeda_dev *mdev)
> > {
> > if (!debugfs_initialized())
>
> --
> Jani Nikula, Intel
--
====================
| I would like to |
| fix the world, |
| but they're not |
| giving me the |
\ source code! /
---------------
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