netdev - [PATCH v2 bpf 0/3] show more accurrate bpf program address

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Message-ID: <20181102171617.310178-1-songliubraving@fb.com>
Date:   Fri, 2 Nov 2018 10:16:14 -0700
From:   Song Liu <songliubraving@...com>
To:     <netdev@...r.kernel.org>
CC:     <kernel-team@...com>, Song Liu <songliubraving@...com>,
        <ast@...nel.org>, <daniel@...earbox.net>,
        <sandipan@...ux.vnet.ibm.com>
Subject: [PATCH  v2 bpf 0/3] show more accurrate bpf program address

Changes v1 -> v2:
1. Added main program length to bpf_prog_info->jited_fun_lens (3/3).
2. Updated commit message of 1/3 and 2/3 with more background about the
   address masking, and why it is still save after the changes.
3. Replace "ulong" with "unsigned long".

This set improves bpf program address showed in /proc/kallsyms and in
bpf_prog_info. First, real program address is showed instead of page
address. Second, when there is no subprogram, bpf_prog_info->jited_ksyms
and bpf_prog_info->jited_fun_lens returns the main prog address and
length.

Song Liu (3):
  bpf: show real jited prog address in /proc/kallsyms
  bpf: show real jited address in bpf_prog_info->jited_ksyms
  bpf: show main program address and length in bpf_prog_info

 kernel/bpf/core.c    |  4 +---
 kernel/bpf/syscall.c | 34 ++++++++++++++++++++++++----------
 2 files changed, 25 insertions(+), 13 deletions(-)

--
2.17.1