From: Martin KaFai Lau <kafai@fb.com>
To: Song Liu <songliubraving@fb.com>
Cc: <bpf@vger.kernel.org>, <netdev@vger.kernel.org>,
<linux-kernel@vger.kernel.org>, <ast@kernel.org>,
<daniel@iogearbox.net>, <kernel-team@fb.com>,
<peterz@infradead.org>
Subject: Re: [PATCH v6 bpf-next 0/6] bpf: enable task local storage for tracing programs
Date: Thu, 25 Feb 2021 16:03:44 -0800 [thread overview]
Message-ID: <20210226000344.a6aud7aaimrc6wzt@kafai-mbp.dhcp.thefacebook.com> (raw)
In-Reply-To: <20210225234319.336131-1-songliubraving@fb.com>
On Thu, Feb 25, 2021 at 03:43:13PM -0800, Song Liu wrote:
> This set enables task local storage for non-BPF_LSM programs.
>
> It is common for tracing BPF program to access per-task data. Currently,
> these data are stored in hash tables with pid as the key. In
> bcc/libbpftools [1], 9 out of 23 tools use such hash tables. However,
> hash table is not ideal for many use case. Task local storage provides
> better usability and performance for BPF programs. Please refer to 6/6 for
> some performance comparison of task local storage vs. hash table.
Thanks for the patches.
Acked-by: Martin KaFai Lau <kafai@fb.com>
next prev parent reply other threads:[~2021-02-26 0:05 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-02-25 23:43 [PATCH v6 bpf-next 0/6] bpf: enable task local storage for tracing programs Song Liu
2021-02-25 23:43 ` [PATCH v6 bpf-next 1/6] " Song Liu
2021-02-25 23:43 ` [PATCH v6 bpf-next 2/6] bpf: prevent deadlock from recursive bpf_task_storage_[get|delete] Song Liu
2021-02-26 0:01 ` Martin KaFai Lau
2021-02-25 23:43 ` [PATCH v6 bpf-next 3/6] selftests/bpf: add non-BPF_LSM test for task local storage Song Liu
2021-02-25 23:43 ` [PATCH v6 bpf-next 4/6] selftests/bpf: test deadlock from recursive bpf_task_storage_[get|delete] Song Liu
2021-02-25 23:43 ` [PATCH v6 bpf-next 5/6] bpf: runqslower: prefer using local vmlimux to generate vmlinux.h Song Liu
2021-02-25 23:43 ` [PATCH v6 bpf-next 6/6] bpf: runqslower: use task local storage Song Liu
2021-02-26 0:03 ` Martin KaFai Lau [this message]
2021-02-26 20:03 ` [PATCH v6 bpf-next 0/6] bpf: enable task local storage for tracing programs Alexei Starovoitov
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