Re: [PATCH 02/49] staging: rtl8723bs: replace DBG_871X_SEL log macro with netdev_dbg()

Fabio Aiuto
2021-04-23T16:52:56Z

On Fri, Apr 23, 2021 at 08:27:58AM -0700, Joe Perches wrote:
> On Fri, 2021-04-23 at 16:57 +0200, Fabio Aiuto wrote:
> > replace DBG_871X_SEL log macro with the net device driver
> > recommended netdev_dbg().
> >
> > This macro by default does a raw printk, and the alternative
> > behaviour, never triggered is a seq_print() call.
> []
> > diff --git a/drivers/staging/rtl8723bs/core/rtw_debug.c b/drivers/staging/rtl8723bs/core/rtw_debug.c
> []
> > @@ -23,9 +23,10 @@ void mac_reg_dump(void *sel, struct adapter *adapter)
> >   for (i = 0x0; i < 0x800; i += 4) {
> >   if (j%4 == 1)
> >   netdev_dbg(adapter->pnetdev, "0x%03x", i);
> > - DBG_871X_SEL(sel, " 0x%08x ", rtw_read32(adapter, i));
> > + netdev_dbg(adapter->pnetdev, " 0x%08x ",
> > + rtw_read32(adapter, i));
> >   if ((j++)%4 == 0)
> > - DBG_871X_SEL(sel, "\n");
> > + netdev_dbg(adapter->pnetdev, "\n");
> >   }
>
> This makes a mess of the output as each netdev_dbg call
> is a separate line.
>
> Dumping 1000 register lines into output logs seems impolite
> at best, even for debugging.
>
> This _might_ be rewritten to something like:
>
> void dump_4_regs(struct adapter *adapter, int offset)
> {
> u32 reg[4];
> int i;
>
> for (i = 0; i < 4; i++)
> reg[i] = rtw_read32(adapter, offset + i);
>
> netdev_dbg(adapter->pnetdev, "0x%03x 0x%08x 0x%08x 0x%08x 0x%08x\n",
> i, reg[0], reg[1], reg[2], reg[3]);
> }
>
> void mac_reg_dump(...)
> {
> ...
>
> for (i = 0; i < 0x800; i += 4)
> dump_4_regs(adapter, i);
>
>
>

interesting, sure that will be matter of another patch series,
the ugly output was already there, old macro used to wrap a raw
printk...