linux-kernel - Re: [PATCH v6 5/7] mm: make tlb_flush

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Date:   Wed, 2 Aug 2017 16:27:58 -0700
From:   Andrew Morton <akpm@...ux-foundation.org>
To:     kbuild test robot <lkp@...el.com>
Cc:     Nadav Amit <namit@...are.com>, kbuild-all@...org,
        linux-mm@...ck.org, nadav.amit@...il.com,
        linux-kernel@...r.kernel.org, Minchan Kim <minchan@...nel.org>
Subject: Re: [PATCH v6 5/7] mm: make tlb_flush_pending global

On Wed, 2 Aug 2017 22:28:47 +0800 kbuild test robot <lkp@...el.com> wrote:

> Hi Minchan,
> 
> [auto build test WARNING on linus/master]
> [also build test WARNING on v4.13-rc3]
> [cannot apply to next-20170802]
> [if your patch is applied to the wrong git tree, please drop us a note to help improve the system]
> 
> url:    https://github.com/0day-ci/linux/commits/Nadav-Amit/mm-migrate-prevent-racy-access-to-tlb_flush_pending/20170802-205715
> config: sh-allyesconfig (attached as .config)
> compiler: sh4-linux-gnu-gcc (Debian 6.1.1-9) 6.1.1 20160705
> reproduce:
>         wget https://raw.githubusercontent.com/01org/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
>         chmod +x ~/bin/make.cross
>         # save the attached .config to linux build tree
>         make.cross ARCH=sh 
> 
> All warnings (new ones prefixed by >>):
> 
>    In file included from include/linux/printk.h:6:0,
>                     from include/linux/kernel.h:13,
>                     from mm/debug.c:8:
>    mm/debug.c: In function 'dump_mm':
> >> include/linux/kern_levels.h:4:18: warning: format '%lx' expects argument of type 'long unsigned int', but argument 40 has type 'int' [-Wformat=]
>
> ...
>

This?

From: Andrew Morton <akpm@...ux-foundation.org>
Subject: mm-make-tlb_flush_pending-global-fix

remove more ifdefs from world's ugliest printk statement

Cc: Mel Gorman <mgorman@...hsingularity.net>
Cc: Minchan Kim <minchan@...nel.org>
Cc: Nadav Amit <namit@...are.com>
Signed-off-by: Andrew Morton <akpm@...ux-foundation.org>
---

 mm/debug.c |    2 --
 1 file changed, 2 deletions(-)

diff -puN include/linux/mm_types.h~mm-make-tlb_flush_pending-global-fix include/linux/mm_types.h
diff -puN mm/debug.c~mm-make-tlb_flush_pending-global-fix mm/debug.c
--- a/mm/debug.c~mm-make-tlb_flush_pending-global-fix
+++ a/mm/debug.c
@@ -124,9 +124,7 @@ void dump_mm(const struct mm_struct *mm)
 #ifdef CONFIG_NUMA_BALANCING
 		"numa_next_scan %lu numa_scan_offset %lu numa_scan_seq %d\n"
 #endif
-#if defined(CONFIG_NUMA_BALANCING) || defined(CONFIG_COMPACTION)
 		"tlb_flush_pending %d\n"
-#endif
 		"def_flags: %#lx(%pGv)\n",
 
 		mm, mm->mmap, mm->vmacache_seqnum, mm->task_size,
_