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    Subject[tip:perf/core] bpf: Add module name [bpf] to ksymbols for bpf programs
    Commit-ID:  6934058d9fb6c058fb5e5b11cdcb19834e205c91
    Gitweb: https://git.kernel.org/tip/6934058d9fb6c058fb5e5b11cdcb19834e205c91
    Author: Song Liu <songliubraving@fb.com>
    AuthorDate: Thu, 17 Jan 2019 08:15:21 -0800
    Committer: Arnaldo Carvalho de Melo <acme@redhat.com>
    CommitDate: Mon, 21 Jan 2019 17:38:56 -0300

    bpf: Add module name [bpf] to ksymbols for bpf programs

    With this patch, /proc/kallsyms will show BPF programs as

    <addr> t bpf_prog_<tag>_<name> [bpf]

    Signed-off-by: Song Liu <songliubraving@fb.com>
    Reviewed-by: Arnaldo Carvalho de Melo <acme@redhat.com>
    Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
    Acked-by: Peter Zijlstra <peterz@infradead.org>
    Cc: Alexei Starovoitov <ast@kernel.org>
    Cc: Daniel Borkmann <daniel@iogearbox.net>
    Cc: Peter Zijlstra <peterz@infradead.org>
    Cc: kernel-team@fb.com
    Cc: netdev@vger.kernel.org
    Link: http://lkml.kernel.org/r/20190117161521.1341602-10-songliubraving@fb.com
    Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
    ---
    kernel/kallsyms.c | 2 +-
    1 file changed, 1 insertion(+), 1 deletion(-)

    diff --git a/kernel/kallsyms.c b/kernel/kallsyms.c
    index f3a04994e063..14934afa9e68 100644
    --- a/kernel/kallsyms.c
    +++ b/kernel/kallsyms.c
    @@ -494,7 +494,7 @@ static int get_ksymbol_ftrace_mod(struct kallsym_iter *iter)

    static int get_ksymbol_bpf(struct kallsym_iter *iter)
    {
    - iter->module_name[0] = '\0';
    + strlcpy(iter->module_name, "bpf", MODULE_NAME_LEN);
    iter->exported = 0;
    return bpf_get_kallsym(iter->pos - iter->pos_ftrace_mod_end,
    &iter->value, &iter->type,
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