Re: [PATCH v4] mtd: ubi: Extend UBI layer debug/messaging capabilities

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On Tue, 2014-10-14 at 17:16 +0300, Tanya Brokhman wrote:
> On 10/14/2014 5:13 PM, Tanya Brokhman wrote:
> > If there is more then one UBI device mounted, there is no way to
> > distinguish between messages from different UBI devices.
> > Add device number to all ubi layer message types.
[]
> > diff --git a/drivers/mtd/ubi/attach.c b/drivers/mtd/ubi/attach.c
[]
> > @@ -206,7 +208,7 @@ static int validate_vid_hdr(const struct ubi_vid_hdr *vid_hdr,
> >   		 */
> >
> >   		if (vol_id != av->vol_id) {
> > -			ubi_err("inconsistent vol_id");
> > +			ubi_err(ubi, "inconsistent vol_id");
> >   			goto bad;
> >   		}
> >

If you are going to change all the ubi_<level> calls,
can you also please add a terminating newline to all
the uses for consistency with all the other
pr_<level>/dev_<level>/<etc>_<level> calls?

(and remove the newline from the ubi_<level> macros)

> > diff --git a/drivers/mtd/ubi/ubi.h b/drivers/mtd/ubi/ubi.h
[]
> > @@ -50,13 +50,14 @@
> >   #define UBI_NAME_STR "ubi"
> >
> >   /* Normal UBI messages */
> > -#define ubi_msg(fmt, ...) pr_notice("UBI: " fmt "\n", ##__VA_ARGS__)
> > +#define ubi_msg(ubi, fmt, ...) pr_notice("UBI-%d: %s:" fmt "\n", \
> > +				 ubi->ubi_num, __func__, ##__VA_ARGS__)
> >   /* UBI warning messages */
> > -#define ubi_warn(fmt, ...) pr_warn("UBI warning: %s: " fmt "\n",  \
> > -				   __func__, ##__VA_ARGS__)
> > +#define ubi_warn(ubi, fmt, ...) pr_warn("UBI-%d warning: %s: " fmt "\n",  \
> > +				   ubi->ubi_num, __func__, ##__VA_ARGS__)
> >   /* UBI error messages */
> > -#define ubi_err(fmt, ...) pr_err("UBI error: %s: " fmt "\n",      \
> > -				 __func__, ##__VA_ARGS__)
> > +#define ubi_err(ubi, fmt, ...) pr_err("UBI-%d error: %s: " fmt "\n",      \
> > +				 ubi->ubi_num, __func__, ##__VA_ARGS__)

Converting these macros to functions using "%pV"
will save quite a bit of text space by removing
a lot of "UBI-%d <foo>: " duplication.

Using ubi_notice instead of ubi_msg would be a
lot more standard too.


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