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From: Alexei Starovoitov <alexei.starovoitov@gmail.com>
To: "Toke Høiland-Jørgensen" <toke@redhat.com>
Cc: Alexei Starovoitov <ast@kernel.org>,
	Daniel Borkmann <daniel@iogearbox.net>,
	Martin KaFai Lau <kafai@fb.com>, Song Liu <songliubraving@fb.com>,
	Yonghong Song <yhs@fb.com>, Andrii Nakryiko <andriin@fb.com>,
	John Fastabend <john.fastabend@gmail.com>,
	Jiri Olsa <jolsa@redhat.com>,
	Eelco Chaudron <echaudro@redhat.com>,
	KP Singh <kpsingh@chromium.org>,
	netdev@vger.kernel.org, bpf@vger.kernel.org
Subject: Re: [PATCH bpf-next v8 11/11] selftests: Remove fmod_ret from benchmarks and test_overhead
Date: Wed, 23 Sep 2020 18:08:11 -0700	[thread overview]
Message-ID: <20200924010811.kwrkzdzh6za3w3fz@ast-mbp.dhcp.thefacebook.com> (raw)
In-Reply-To: <160079992560.8301.11225602391403157558.stgit@toke.dk>

On Tue, Sep 22, 2020 at 08:38:45PM +0200, Toke Høiland-Jørgensen wrote:
> -const struct bench bench_trig_fmodret = {
> -	.name = "trig-fmodret",
> -	.validate = trigger_validate,
> -	.setup = trigger_fmodret_setup,
> -	.producer_thread = trigger_producer,
> -	.consumer_thread = trigger_consumer,
> -	.measure = trigger_measure,
> -	.report_progress = hits_drops_report_progress,
> -	.report_final = hits_drops_report_final,
> -};
> diff --git a/tools/testing/selftests/bpf/progs/trigger_bench.c b/tools/testing/selftests/bpf/progs/trigger_bench.c
> index 9a4d09590b3d..1af23ac0c37c 100644
> --- a/tools/testing/selftests/bpf/progs/trigger_bench.c
> +++ b/tools/testing/selftests/bpf/progs/trigger_bench.c
> @@ -45,10 +45,3 @@ int bench_trigger_fentry_sleep(void *ctx)
>  	__sync_add_and_fetch(&hits, 1);
>  	return 0;
>  }
> -
> -SEC("fmod_ret/__x64_sys_getpgid")
> -int bench_trigger_fmodret(void *ctx)
> -{
> -	__sync_add_and_fetch(&hits, 1);
> -	return -22;
> -}

why are you removing this? There is no problem here.
All syscalls are error-injectable.
I'm surprised Andrii acked this :(

  parent reply	other threads:[~2020-09-24  1:08 UTC|newest]

Thread overview: 34+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-09-22 18:38 [PATCH bpf-next v8 00/11] bpf: Support multi-attach for freplace programs Toke Høiland-Jørgensen
2020-09-22 18:38 ` [PATCH bpf-next v8 01/11] bpf: disallow attaching modify_return tracing functions to other BPF programs Toke Høiland-Jørgensen
2020-09-23 17:25   ` Andrii Nakryiko
2020-09-22 18:38 ` [PATCH bpf-next v8 02/11] bpf: change logging calls from verbose() to bpf_log() and use log pointer Toke Høiland-Jørgensen
2020-09-22 18:38 ` [PATCH bpf-next v8 03/11] bpf: verifier: refactor check_attach_btf_id() Toke Høiland-Jørgensen
2020-09-23 23:54   ` Alexei Starovoitov
2020-09-22 18:38 ` [PATCH bpf-next v8 04/11] bpf: move prog->aux->linked_prog and trampoline into bpf_link on attach Toke Høiland-Jørgensen
2020-09-24  0:14   ` Alexei Starovoitov
2020-09-24 14:34     ` Toke Høiland-Jørgensen
2020-09-24 15:43       ` Alexei Starovoitov
2020-09-24 21:30         ` Toke Høiland-Jørgensen
2020-09-24 20:40       ` Andrii Nakryiko
2020-09-24 21:24         ` Toke Høiland-Jørgensen
2020-09-24 21:59           ` Andrii Nakryiko
2020-09-24 22:20             ` Toke Høiland-Jørgensen
2020-09-24 22:37               ` Andrii Nakryiko
2020-09-24 23:13                 ` Toke Høiland-Jørgensen
2020-09-24 21:59     ` Toke Høiland-Jørgensen
2020-09-25 15:45       ` Alexei Starovoitov
2020-09-25 20:57         ` Toke Høiland-Jørgensen
2020-09-22 18:38 ` [PATCH bpf-next v8 05/11] bpf: support attaching freplace programs to multiple attach points Toke Høiland-Jørgensen
2020-09-24  1:04   ` Alexei Starovoitov
2020-09-22 18:38 ` [PATCH bpf-next v8 06/11] bpf: Fix context type resolving for extension programs Toke Høiland-Jørgensen
2020-09-22 18:38 ` [PATCH bpf-next v8 07/11] libbpf: add support for freplace attachment in bpf_link_create Toke Høiland-Jørgensen
2020-09-23 17:28   ` Andrii Nakryiko
2020-09-23 20:58     ` Toke Høiland-Jørgensen
2020-09-22 18:38 ` [PATCH bpf-next v8 08/11] selftests: add test for multiple attachments of freplace program Toke Høiland-Jørgensen
2020-09-22 18:38 ` [PATCH bpf-next v8 09/11] selftests/bpf: Adding test for arg dereference in extension trace Toke Høiland-Jørgensen
2020-09-22 18:38 ` [PATCH bpf-next v8 10/11] selftests: Add selftest for disallowing modify_return attachment to freplace Toke Høiland-Jørgensen
2020-09-22 18:38 ` [PATCH bpf-next v8 11/11] selftests: Remove fmod_ret from benchmarks and test_overhead Toke Høiland-Jørgensen
2020-09-23 17:40   ` Andrii Nakryiko
2020-09-24  1:08   ` Alexei Starovoitov [this message]
2020-09-24  1:38     ` Andrii Nakryiko
2020-09-24 23:19       ` Toke Høiland-Jørgensen

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