linux-kernel - Re: mmotm 2020-12-23-16-15 uploaded (mm/vmstat.c)

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Date:   Wed, 23 Dec 2020 18:56:53 -0800
From:   Randy Dunlap <rdunlap@...radead.org>
To:     akpm@...ux-foundation.org, broonie@...nel.org,
        linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-mm@...ck.org, linux-next@...r.kernel.org, mhocko@...e.cz,
        mm-commits@...r.kernel.org, sfr@...b.auug.org.au,
        Muchun Song <songmuchun@...edance.com>
Subject: Re: mmotm 2020-12-23-16-15 uploaded (mm/vmstat.c)

On 12/23/20 4:16 PM, akpm@...ux-foundation.org wrote:
> The mm-of-the-moment snapshot 2020-12-23-16-15 has been uploaded to
> 
>    https://www.ozlabs.org/~akpm/mmotm/
> 
> mmotm-readme.txt says
> 
> README for mm-of-the-moment:
> 
> https://www.ozlabs.org/~akpm/mmotm/
> 
> This is a snapshot of my -mm patch queue.  Uploaded at random hopefully
> more than once a week.
> 
> You will need quilt to apply these patches to the latest Linus release (5.x
> or 5.x-rcY).  The series file is in broken-out.tar.gz and is duplicated in
> https://ozlabs.org/~akpm/mmotm/series
> 
> The file broken-out.tar.gz contains two datestamp files: .DATE and
> .DATE-yyyy-mm-dd-hh-mm-ss.  Both contain the string yyyy-mm-dd-hh-mm-ss,
> followed by the base kernel version against which this patch series is to
> be applied.

on i386 or UML on i386 or x86_64:
(and probably on x86_64, but my builds haven't got there yet)

when CONFIG_TRANSPARENT_HUGEPAGE is not set/enabled:

../mm/vmstat.c: In function ‘zoneinfo_show_print’:
./../include/linux/compiler_types.h:320:38: error: call to ‘__compiletime_assert_269’ declared with attribute error: BUILD_BUG failed
  _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
                                      ^
./../include/linux/compiler_types.h:301:4: note: in definition of macro ‘__compiletime_assert’
    prefix ## suffix();    \
    ^~~~~~
./../include/linux/compiler_types.h:320:2: note: in expansion of macro ‘_compiletime_assert’
  _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
  ^~~~~~~~~~~~~~~~~~~
../include/linux/build_bug.h:39:37: note: in expansion of macro ‘compiletime_assert’
 #define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg)
                                     ^~~~~~~~~~~~~~~~~~
../include/linux/build_bug.h:59:21: note: in expansion of macro ‘BUILD_BUG_ON_MSG’
 #define BUILD_BUG() BUILD_BUG_ON_MSG(1, "BUILD_BUG failed")
                     ^~~~~~~~~~~~~~~~
../include/linux/huge_mm.h:325:28: note: in expansion of macro ‘BUILD_BUG’
 #define HPAGE_PMD_SHIFT ({ BUILD_BUG(); 0; })
                            ^~~~~~~~~
../include/linux/huge_mm.h:106:26: note: in expansion of macro ‘HPAGE_PMD_SHIFT’
 #define HPAGE_PMD_ORDER (HPAGE_PMD_SHIFT-PAGE_SHIFT)
                          ^~~~~~~~~~~~~~~
../include/linux/huge_mm.h:107:26: note: in expansion of macro ‘HPAGE_PMD_ORDER’
 #define HPAGE_PMD_NR (1<<HPAGE_PMD_ORDER)
                          ^~~~~~~~~~~~~~~
../mm/vmstat.c:1630:14: note: in expansion of macro ‘HPAGE_PMD_NR’
     pages /= HPAGE_PMD_NR;
              ^~~~~~~~~~~~
../mm/vmstat.c: In function ‘vmstat_start’:
./../include/linux/compiler_types.h:320:38: error: call to ‘__compiletime_assert_271’ declared with attribute error: BUILD_BUG failed
  _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
                                      ^
./../include/linux/compiler_types.h:301:4: note: in definition of macro ‘__compiletime_assert’
    prefix ## suffix();    \
    ^~~~~~
./../include/linux/compiler_types.h:320:2: note: in expansion of macro ‘_compiletime_assert’
  _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
  ^~~~~~~~~~~~~~~~~~~
../include/linux/build_bug.h:39:37: note: in expansion of macro ‘compiletime_assert’
 #define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg)
                                     ^~~~~~~~~~~~~~~~~~
../include/linux/build_bug.h:59:21: note: in expansion of macro ‘BUILD_BUG_ON_MSG’
 #define BUILD_BUG() BUILD_BUG_ON_MSG(1, "BUILD_BUG failed")
                     ^~~~~~~~~~~~~~~~
../include/linux/huge_mm.h:325:28: note: in expansion of macro ‘BUILD_BUG’
 #define HPAGE_PMD_SHIFT ({ BUILD_BUG(); 0; })
                            ^~~~~~~~~
../include/linux/huge_mm.h:106:26: note: in expansion of macro ‘HPAGE_PMD_SHIFT’
 #define HPAGE_PMD_ORDER (HPAGE_PMD_SHIFT-PAGE_SHIFT)
                          ^~~~~~~~~~~~~~~
../include/linux/huge_mm.h:107:26: note: in expansion of macro ‘HPAGE_PMD_ORDER’
 #define HPAGE_PMD_NR (1<<HPAGE_PMD_ORDER)
                          ^~~~~~~~~~~~~~~
../mm/vmstat.c:1755:12: note: in expansion of macro ‘HPAGE_PMD_NR’
    v[i] /= HPAGE_PMD_NR;
            ^~~~~~~~~~~~

due to <linux/huge_mm.h>:

#else /* CONFIG_TRANSPARENT_HUGEPAGE */
#define HPAGE_PMD_SHIFT ({ BUILD_BUG(); 0; })
#define HPAGE_PMD_MASK ({ BUILD_BUG(); 0; })
#define HPAGE_PMD_SIZE ({ BUILD_BUG(); 0; })

#define HPAGE_PUD_SHIFT ({ BUILD_BUG(); 0; })
#define HPAGE_PUD_MASK ({ BUILD_BUG(); 0; })
#define HPAGE_PUD_SIZE ({ BUILD_BUG(); 0; })



>> mm-memcontrol-convert-nr_anon_thps-account-to-pages.patch

-- 
~Randy