On Thu, 13 Feb 2025, Bjorn Helgaas wrote:
> On Mon, Dec 16, 2024 at 06:10:11PM +0200, Ilpo Järvinen wrote:
> > The shpchp hotplug driver defines logging wrappers ctrl_*() and another
> > set of wrappers with generic names which are just duplicates of
> > existing generic printk() wrappers. Only the former are useful to
> > preserve as they handle the controller dereferencing (the latter are
> > also unused).
> >
> > The "shpchp_debug" module parameter is used to enable debug logging.
> > The generic ability to turn on/off debug prints dynamically covers this
> > usecase already so there is no need to module specific debug handling.
> > The ctrl_dbg() wrapper also uses a low-level pci_printk() despite
> > always using KERN_DEBUG level.
>
> I think it's great to get rid of the module param. Can you include
> a hint about how users of shpchp_debug should now enable debug prints?
>
> The one I have in my notes is to set CONFIG_DYNAMIC_DEBUG=y and boot
> with 'dyndbg="file drivers/pci/* +p"'.
Sure, I'll add the info and split the change as you suggested below.
> > Convert ctrl_dbg() to use the pci_dbg() and remove "shpchp_debug" check
> > from it.
> >
> > Removing the non-ctrl variants of logging wrappers and "shpchp_debug"
> > module parameter as they are no longer used.
>
> > -#define dbg(format, arg...)
> > \
> > -do {
> > \
> > - if (shpchp_debug) \
> > - printk(KERN_DEBUG "%s: " format, MY_NAME, ## arg); \
> > -} while (0)
> > -#define err(format, arg...)
> > \
> > - printk(KERN_ERR "%s: " format, MY_NAME, ## arg)
> > -#define info(format, arg...)
> > \
> > - printk(KERN_INFO "%s: " format, MY_NAME, ## arg)
> > -#define warn(format, arg...)
> > \
> > - printk(KERN_WARNING "%s: " format, MY_NAME, ## arg)
>
> The above are unused, aren't they? Can we make a separate patch to
> remove these, for ease of describing and reviewing?
--
i.
