Re: Build regressions/improvements in v5.18-rc1

Dave Chinner
2022-04-04T09:27:05Z

On Mon, Apr 04, 2022 at 10:16:08AM +0200, Geert Uytterhoeven wrote:
> On Mon, 4 Apr 2022, Geert Uytterhoeven wrote:
> > Below is the list of build error/warning regressions/improvements in
> > v5.18-rc1[1] compared to v5.17[2].
> >
> > Summarized:
> > - build errors: +36/-15
> > - build warnings: +5/-38
> >
> > Happy fixing! ;-)

Well....

> > + /kisskb/src/fs/xfs/xfs_buf.h: error: initializer element is not constant: => 46:23

Looking at:

http://kisskb.ellerman.id.au/kisskb/buildresult/14714961/

The build error is:

/kisskb/src/fs/xfs/./xfs_trace.h:432:2: note: in expansion of macro 'TP_printk'
TP_printk("dev %d:%d daddr 0x%llx bbcount 0x%x hold %d pincount %d "
^
/kisskb/src/fs/xfs/./xfs_trace.h:440:5: note: in expansion of macro '__print_flags'
__print_flags(__entry->flags, "|", XFS_BUF_FLAGS),
^
/kisskb/src/fs/xfs/xfs_buf.h:67:4: note: in expansion of macro 'XBF_UNMAPPED'
{ XBF_UNMAPPED, "UNMAPPED" }
^
/kisskb/src/fs/xfs/./xfs_trace.h:440:40: note: in expansion of macro 'XFS_BUF_FLAGS'
__print_flags(__entry->flags, "|", XFS_BUF_FLAGS),
^
/kisskb/src/fs/xfs/./xfs_trace.h: In function 'trace_raw_output_xfs_buf_flags_class':
/kisskb/src/fs/xfs/xfs_buf.h:46:23: error: initializer element is not constant
#define XBF_UNMAPPED (1 << 31)/* do not map the buffer */

This doesn't make a whole lotta sense to me. It's blown up in a
tracepoint macro in XFS that was not changed at all in 5.18-rc1, nor
was any of the surrounding XFS code or contexts. Perhaps something
outside XFS changed to cause this on these platforms?

Can you bisect this, please?

Cheers,

Dave.
--
Dave Chinner
david@fromorbit.com