linux-kernel - [PATCH bpf-next v12 0/2] selftests/bpf: Optimize kallsyms cache

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Message-ID: <tencent_FA47B711AB0DEC843EB3362E6355505ED509@qq.com>
Date:   Thu,  7 Sep 2023 09:59:12 +0800
From:   Rong Tao <rtoax@...mail.com>
To:     olsajiri@...il.com, andrii@...nel.org, daniel@...earbox.net
Cc:     Rong Tao <rongtao@...tc.cn>, Alexei Starovoitov <ast@...nel.org>,
        Martin KaFai Lau <martin.lau@...ux.dev>,
        Song Liu <song@...nel.org>,
        Yonghong Song <yonghong.song@...ux.dev>,
        John Fastabend <john.fastabend@...il.com>,
        KP Singh <kpsingh@...nel.org>,
        Stanislav Fomichev <sdf@...gle.com>,
        Hao Luo <haoluo@...gle.com>, Jiri Olsa <jolsa@...nel.org>,
        Mykola Lysenko <mykolal@...com>, Shuah Khan <shuah@...nel.org>,
        Maxime Coquelin <mcoquelin.stm32@...il.com>,
        Alexandre Torgue <alexandre.torgue@...s.st.com>,
        Yafang Shao <laoar.shao@...il.com>,
        bpf@...r.kernel.org (open list:BPF [GENERAL] (Safe Dynamic Programs and
        Tools)), linux-kernel@...r.kernel.org (open list),
        linux-kselftest@...r.kernel.org (open list:KERNEL SELFTEST FRAMEWORK),
        linux-stm32@...md-mailman.stormreply.com (moderated list:ARM/STM32
        ARCHITECTURE),
        linux-arm-kernel@...ts.infradead.org (moderated list:ARM/STM32
        ARCHITECTURE)
Subject: [PATCH bpf-next v12 0/2] selftests/bpf: Optimize kallsyms cache

From: Rong Tao <rongtao@...tc.cn>

We need to optimize the kallsyms cache, including optimizations for the
number of symbols limit, and, some test cases add new kernel symbols
(such as testmods) and we need to refresh kallsyms (reload or refresh).

Rong Tao (2):
  selftests/bpf: trace_helpers.c: optimize kallsyms cache
  selftests/bpf: trace_helpers.c: Add a global ksyms initialization
    mutex

 samples/bpf/Makefile                          |   4 +
 .../selftests/bpf/prog_tests/fill_link_info.c |   2 +-
 .../prog_tests/kprobe_multi_testmod_test.c    |  20 ++-
 tools/testing/selftests/bpf/trace_helpers.c   | 134 +++++++++++++-----
 tools/testing/selftests/bpf/trace_helpers.h   |   8 +-
 5 files changed, 122 insertions(+), 46 deletions(-)

-- 
2.41.0