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    SubjectRe: [PATCH v6 bpf-next 0/6] bpf: enable task local storage for tracing programs
    On Thu, Feb 25, 2021 at 4:04 PM Martin KaFai Lau <kafai@fb.com> wrote:
    >
    > 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>

    Applied. Thanks.

    9 out of 23 libbpf-tools will significantly reduce the tracing overhead. Hooray!

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