From: Alexei Starovoitov <alexei.starovoitov@gmail.com>
To: Arnaldo Carvalho de Melo <arnaldo.melo@gmail.com>
Cc: "Jakub Kicinski" <jakub.kicinski@netronome.com>,
"Stanislav Fomichev" <sdf@fomichev.me>,
"Andrii Nakryiko" <andrii.nakryiko@gmail.com>,
"Toke Høiland-Jørgensen" <toke@redhat.com>,
"Andrii Nakryiko" <andriin@fb.com>,
"Adrian Hunter" <adrian.hunter@intel.com>,
"Alexei Starovoitov" <ast@kernel.org>,
"Daniel Borkmann" <daniel@iogearbox.net>,
"Jiri Olsa" <jolsa@kernel.org>, "Martin KaFai Lau" <kafai@fb.com>,
"Namhyung Kim" <namhyung@kernel.org>, bpf <bpf@vger.kernel.org>,
Networking <netdev@vger.kernel.org>,
linux-perf-users@vger.kernel.org,
"Linux Kernel Mailing List" <linux-kernel@vger.kernel.org>,
"Quentin Monnet" <quentin.monnet@netronome.com>
Subject: Re: [PATCH] libbpf: Fix up generation of bpf_helper_defs.h
Date: Wed, 27 Nov 2019 17:20:17 -0800 [thread overview]
Message-ID: <CAADnVQLFVH000BJM4cN29kcC+KKDmVek3jaen3cZz2=12jP58g@mail.gmail.com> (raw)
In-Reply-To: <58CA150B-D006-48DF-A279-077BA2FFD6EC@kernel.org>
On Wed, Nov 27, 2019 at 5:17 PM Arnaldo Carvalho de Melo
<arnaldo.melo@gmail.com> wrote:
>
> On November 27, 2019 9:59:15 PM GMT-03:00, Alexei Starovoitov <alexei.starovoitov@gmail.com> wrote:
> >On Wed, Nov 27, 2019 at 4:50 PM Arnaldo Carvalho de Melo
> ><arnaldo.melo@gmail.com> wrote:
> >>
> >> Take it as one, I think it's what should have been in the cset it is
> >fixing, that way no breakage would have happened.
> >
> >Ok. I trimmed commit log and applied here:
> >https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf.git/commit/?id=1fd450f99272791df8ea8e1b0f5657678e118e90
> >
> >What about your other fix and my suggestion there?
> >(__u64) cast instead of PRI ?
> >We do this already in two places:
> >libbpf.c: shdr_idx, (__u64)sym->st_value);
> >libbpf.c: (__u64)sym.st_value, GELF_ST_TYPE(sym.st_info),
>
>
> I'm using the smartphone now, but I thought you first suggested using a cast to long, if you mean using %llu + cast to __u64, then should be was ugly as using PRI, IOW, should work on both 64 bit and 32 bit. :-)
Yes. I suggested (long) first, but then found two cases in libbpf that
solve this with (__u64),
so better to stick to that for consistency.
next prev parent reply other threads:[~2019-11-28 1:20 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-11-26 15:10 [PATCH] libbpf: Fix up generation of bpf_helper_defs.h Arnaldo Carvalho de Melo
2019-11-26 15:48 ` Arnaldo Carvalho de Melo
2019-11-26 16:38 ` Toke Høiland-Jørgensen
2019-11-26 18:34 ` Arnaldo Carvalho de Melo
2019-11-26 18:50 ` Toke Høiland-Jørgensen
2019-11-26 19:04 ` Arnaldo Carvalho de Melo
2019-11-26 22:05 ` Andrii Nakryiko
2019-11-26 22:10 ` Arnaldo Carvalho de Melo
2019-11-26 22:17 ` Arnaldo Carvalho de Melo
2019-11-26 22:38 ` Andrii Nakryiko
2019-11-26 23:10 ` Stanislav Fomichev
2019-11-26 23:52 ` Jakub Kicinski
2019-11-27 1:39 ` Arnaldo Carvalho de Melo
2019-11-27 13:45 ` [PATCH] libbpf: Use PRIu64 for sym->st_value to fix build on 32-bit arches Arnaldo Carvalho de Melo
2019-11-27 16:39 ` Alexei Starovoitov
2019-11-27 18:45 ` Arnaldo Carvalho de Melo
2019-11-27 18:55 ` Alexei Starovoitov
2019-11-27 19:39 ` Arnaldo Carvalho de Melo
2019-11-27 19:33 ` Alexei Starovoitov
2019-12-03 13:50 ` Naresh Kamboju
2019-12-03 14:41 ` Arnaldo Carvalho de Melo
2019-11-28 0:31 ` [PATCH] libbpf: Fix up generation of bpf_helper_defs.h Alexei Starovoitov
2019-11-28 0:51 ` Arnaldo Carvalho de Melo
2019-11-28 0:59 ` Alexei Starovoitov
2019-11-28 1:17 ` Arnaldo Carvalho de Melo
2019-11-28 1:20 ` Alexei Starovoitov [this message]
2019-11-28 1:27 ` Arnaldo Carvalho de Melo
2019-11-28 1:52 ` Alexei Starovoitov
2019-11-26 16:53 ` Alexei Starovoitov
2019-11-26 18:30 ` Arnaldo Carvalho de Melo
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