Re: [PATCH v2] ia64: don't do IA64_CMPXCHG_DEBUG without CONFIG_PRINTK

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On Mon 2021-09-27 11:57:18, Randy Dunlap wrote:
> On 9/27/21 4:15 AM, Petr Mladek wrote:
> > On Sun 2021-09-26 21:53:33, Randy Dunlap wrote:
> > > On 9/26/21 8:22 PM, Paul Gortmaker wrote:
> > > > [[PATCH v2] ia64: don't do IA64_CMPXCHG_DEBUG without CONFIG_PRINTK] On 26/09/2021 (Sun 10:12) Randy Dunlap wrote:
> > > > 
> > > > > When CONFIG_PRINTK is not set, the CMPXCHG_BUGCHECK() macro calls
> > > > > _printk(), but _printk() is a static inline function, not available
> > > > > as an extern.
> > > > > Since the purpose of the macro is to print the BUGCHECK info,
> > > > > make this config option depend on PRINTK.
> > > > > 
> > > > > Fixes multiple occurrences of this build error:
> > > > > 
> > > > > ../include/linux/printk.h:208:5: error: static declaration of '_printk' follows non-static declaration
> > > > >     208 | int _printk(const char *s, ...)
> > > > >         |     ^~~~~~~
> > > > > In file included from ../arch/ia64/include/asm/cmpxchg.h:5,
> > > > > ../arch/ia64/include/uapi/asm/cmpxchg.h:146:28: note: previous declaration of '_printk' with type 'int(const char *, ...)'
> > > > >     146 |                 extern int _printk(const char *fmt, ...);
> > > > > 
> > > > > Fixes: 85f8f7759e41 ("ia64: populate the cmpxchg header with appropriate code")
> > > > 
> > > > I don't think this fixes tag makes sense either as it was just a
> > > > straightforward code relocation.  As pointed out elsewhere, it will
> > > > probably be back even further where CONFIG_PRINTK was introduced, which
> > > > would be d59745ce3e7a (2005 vintage).  The ia64 debug option predates
> > > > git, so it isn't at fault (and you can't blame it anyway).
> > > > 
> > > > Honestly, realize this is just for a randconfig for ia64 where PRINTK is
> > > > disabled - something that will never be done in any of the remaining
> > > > ia64 deployments out there (if there is any).  So I'd just recommend
> > > > dropping the Fixes tag and move on.  It isn't like there is a lot of
> > > > people out there doing randconfig builds on linux-stable releases.
> > > > 
> > > 
> > > Yes, I like the idea of dropping the Fixes: tag also. Thanks.
> > > Guess I'll send a v3.
> > 
> > I could take it via printk tree. I am going to wait 2-3 more days
> > just in case anyone has a comment.
> > 
> > Feel free to send v3 but I could just remove the tag when pushing v2.
> 
> Hi Petr,
> 
> Please just remove the Fixes: tag after waiting a few more days
> for comments.

Done. The patch has been pushed into printk/linux.git, branch
for-5.16.

Best Regards,
Petr



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