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Date: Wed, 23 Oct 2024 16:51:15 -0700
From: Andrew Morton <akpm@linux-foundation.org>
To: Wladislav Wiebe <wladislav.kw@gmail.com>
Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, Vlastimil Babka
 <vbabka@suse.cz>
Subject: Re: [PATCH] tools/mm: -Werror fixes in page-types/slabinfo
Message-Id: <20241023165115.b524c51e80c36e120edabb36@linux-foundation.org>
In-Reply-To: <c1ceb507-94bc-461c-934d-c19b77edd825@gmail.com>
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On Tue, 22 Oct 2024 19:21:13 +0200 Wladislav Wiebe <wladislav.kw@gmail.com>=
 wrote:

> Commit e6d2c436ff693 ("tools/mm: allow users to provide
> additional cflags/ldflags") passes now CFLAGS to Makefile.
> With this, build systems with default -Werror enabled found:
>=20
> slabinfo.c:1300:25: error: ignoring return value of 'chdir'
> declared with attribute 'warn_unused_result' [-Werror=3Dunused-result]
> =A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0 =
chdir("..");
> =A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0 =
^~~~~~~~~~~
> page-types.c:397:35: error: format '%lu' expects argument of type
> 'long unsigned int', but argument 2 has type 'uint64_t'
> {aka 'long long unsigned int'} [-Werror=3Dformat=3D]
> =A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0 =
printf("%lu\t", mapcnt0);
> =A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=
=A0=A0=A0=A0=A0=A0=A0=A0 ~~^=A0=A0=A0=A0 ~~~~~~~
> ..
>=20
> Fix page-types by using PRIu64 for uint64_t prints and check
> in slabinfo for return code on chdir("..").
>=20

Thanks.

Your email client messed this up in strange ways, so I basically typed
it in again.  I added the Fixes: target and a cc:stable.