linux-kernel - linux-next: build failure after merge of the tip tree

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Date: Tue, 9 Apr 2024 12:49:05 +1000
From: Stephen Rothwell <sfr@...b.auug.org.au>
To: Thomas Gleixner <tglx@...utronix.de>, Ingo Molnar <mingo@...hat.com>,
 "H. Peter Anvin" <hpa@...or.com>, Peter Zijlstra <peterz@...radead.org>
Cc: Adrian Hunter <adrian.hunter@...el.com>, Linux Kernel Mailing List
 <linux-kernel@...r.kernel.org>, Linux Next Mailing List
 <linux-next@...r.kernel.org>
Subject: linux-next: build failure after merge of the tip tree

Hi all,

After merging the tip tree, today's linux-next build (powerpc
ppc64_defconfig) failed like this:

In file included from <command-line>:
lib/vdso/gettimeofday.c: In function 'vdso_calc_ns':
lib/vdso/gettimeofday.c:11:33: error: 'U64_MAX' undeclared (first use in this function); did you mean 'U64_C'?
   11 | # define VDSO_DELTA_MASK(vd)    U64_MAX
      |                                 ^~~~~~~
lib/vdso/gettimeofday.c:41:49: note: in expansion of macro 'VDSO_DELTA_MASK'
   41 |         u64 delta = (cycles - vd->cycle_last) & VDSO_DELTA_MASK(vd);
      |                                                 ^~~~~~~~~~~~~~~
lib/vdso/gettimeofday.c:11:33: note: each undeclared identifier is reported only once for each function it appears in
   11 | # define VDSO_DELTA_MASK(vd)    U64_MAX
      |                                 ^~~~~~~
lib/vdso/gettimeofday.c:41:49: note: in expansion of macro 'VDSO_DELTA_MASK'
   41 |         u64 delta = (cycles - vd->cycle_last) & VDSO_DELTA_MASK(vd);
      |                                                 ^~~~~~~~~~~~~~~

Caused by commit

  c8e3a8b6f2e6 ("vdso: Consolidate vdso_calc_delta()")

I have used the tip tree from next-20240408 for today.

-- 
Cheers,
Stephen Rothwell

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