linux-kernel - Re: [PATCH] selftests/bpf/progs: use __auto

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-ID: <CAH4c4jKvMBfaRaAoHbBn45vKzCHMBRjJ7UCOqa8FDXXQ7c_L2w@mail.gmail.com>
Date: Wed, 6 Aug 2025 20:55:31 +0530
From: Pranav Tyagi <pranav.tyagi03@...il.com>
To: Alexei Starovoitov <alexei.starovoitov@...il.com>
Cc: Alexei Starovoitov <ast@...nel.org>, Daniel Borkmann <daniel@...earbox.net>, 
	"David S. Miller" <davem@...emloft.net>, Jakub Kicinski <kuba@...nel.org>, 
	Jesper Dangaard Brouer <hawk@...nel.org>, John Fastabend <john.fastabend@...il.com>, 
	Andrii Nakryiko <andrii@...nel.org>, Eduard <eddyz87@...il.com>, Shuah Khan <shuah@...nel.org>, 
	Stanislav Fomichev <sdf@...ichev.me>, Mykola Lysenko <mykolal@...com>, 
	Martin KaFai Lau <martin.lau@...ux.dev>, Song Liu <song@...nel.org>, 
	Yonghong Song <yonghong.song@...ux.dev>, KP Singh <kpsingh@...nel.org>, 
	Hao Luo <haoluo@...gle.com>, Jiri Olsa <jolsa@...nel.org>, 
	Network Development <netdev@...r.kernel.org>, bpf <bpf@...r.kernel.org>, 
	"open list:KERNEL SELFTEST FRAMEWORK" <linux-kselftest@...r.kernel.org>, LKML <linux-kernel@...r.kernel.org>, 
	linux-kernel-mentees@...ts.linux.dev
Subject: Re: [PATCH] selftests/bpf/progs: use __auto_type in swap() macro

On Wed, Aug 6, 2025 at 8:33 PM Alexei Starovoitov
<alexei.starovoitov@...il.com> wrote:
>
> On Wed, Aug 6, 2025 at 4:02 AM Pranav Tyagi <pranav.tyagi03@...il.com> wrote:
> >
> > Replace typeof() with __auto_type in xdp_synproxy_kern.c.
> > __auto_type was introduced in GCC 4.9 and reduces the compile time for
> > all compilers. No functional changes intended.
> >
> > Signed-off-by: Pranav Tyagi <pranav.tyagi03@...il.com>
> > ---
> >  tools/testing/selftests/bpf/progs/xdp_synproxy_kern.c | 2 +-
> >  1 file changed, 1 insertion(+), 1 deletion(-)
> >
> > diff --git a/tools/testing/selftests/bpf/progs/xdp_synproxy_kern.c b/tools/testing/selftests/bpf/progs/xdp_synproxy_kern.c
> > index 62b8e29ced9f..b08738f9a0e6 100644
> > --- a/tools/testing/selftests/bpf/progs/xdp_synproxy_kern.c
> > +++ b/tools/testing/selftests/bpf/progs/xdp_synproxy_kern.c
> > @@ -58,7 +58,7 @@
> >  #define MAX_PACKET_OFF 0xffff
> >
> >  #define swap(a, b) \
> > -       do { typeof(a) __tmp = (a); (a) = (b); (b) = __tmp; } while (0)
> > +       do { __auto_type __tmp = (a); (a) = (b); (b) = __tmp; } while (0)
>
> Sorry, not doing this churn. The code is fine as-is.
>
> --
> pw-bot: cr

I understand. Thanks