From: Arnaldo Carvalho de Melo <arnaldo.melo@gmail.com>
To: Jiri Olsa <jolsa@kernel.org>
Cc: "Alexei Starovoitov" <ast@kernel.org>,
"Daniel Borkmann" <daniel@iogearbox.net>,
netdev@vger.kernel.org, bpf@vger.kernel.org,
"Andrii Nakryiko" <andriin@fb.com>, "Yonghong Song" <yhs@fb.com>,
"Song Liu" <songliubraving@fb.com>,
"Martin KaFai Lau" <kafai@fb.com>,
"Jakub Kicinski" <kuba@kernel.org>,
"David Miller" <davem@redhat.com>,
"Björn Töpel" <bjorn.topel@intel.com>,
"John Fastabend" <john.fastabend@gmail.com>,
"Jesper Dangaard Brouer" <hawk@kernel.org>
Subject: Re: [PATCH 00/14] bpf: Add trampoline and dispatcher to /proc/kallsyms
Date: Tue, 11 Feb 2020 16:13:47 -0300 [thread overview]
Message-ID: <20200211191347.GH3416@kernel.org> (raw)
In-Reply-To: <20200208154209.1797988-1-jolsa@kernel.org>
Em Sat, Feb 08, 2020 at 04:41:55PM +0100, Jiri Olsa escreveu:
> hi,
> this patchset adds trampoline and dispatcher objects
> to be visible in /proc/kallsyms. The last patch also
> adds sorting for all bpf objects in /proc/kallsyms.
This will allow those to appear in profiles, right? That would be
interesting to explicitely state, i.e. the _why_ of this patch, not just
the _what_.
Thanks,
- Arnaldo
> $ sudo cat /proc/kallsyms | tail -20
> ...
> ffffffffa050f000 t bpf_prog_5a2b06eab81b8f51 [bpf]
> ffffffffa0511000 t bpf_prog_6deef7357e7b4530 [bpf]
> ffffffffa0542000 t bpf_trampoline_13832 [bpf]
> ffffffffa0548000 t bpf_prog_96f1b5bf4e4cc6dc_mutex_lock [bpf]
> ffffffffa0572000 t bpf_prog_d1c63e29ad82c4ab_bpf_prog1 [bpf]
> ffffffffa0585000 t bpf_prog_e314084d332a5338__dissect [bpf]
> ffffffffa0587000 t bpf_prog_59785a79eac7e5d2_mutex_unlock [bpf]
> ffffffffa0589000 t bpf_prog_d0db6e0cac050163_mutex_lock [bpf]
> ffffffffa058d000 t bpf_prog_d8f047721e4d8321_bpf_prog2 [bpf]
> ffffffffa05df000 t bpf_trampoline_25637 [bpf]
> ffffffffa05e3000 t bpf_prog_d8f047721e4d8321_bpf_prog2 [bpf]
> ffffffffa05e5000 t bpf_prog_3b185187f1855c4c [bpf]
> ffffffffa05e7000 t bpf_prog_d8f047721e4d8321_bpf_prog2 [bpf]
> ffffffffa05eb000 t bpf_prog_93cebb259dd5c4b2_do_sys_open [bpf]
> ffffffffa0677000 t bpf_dispatcher_xdp [bpf]
>
> thanks,
> jirka
>
>
> ---
> Björn Töpel (1):
> bpf: Add bpf_trampoline_ name prefix for DECLARE_BPF_DISPATCHER
>
> Jiri Olsa (13):
> x86/mm: Rename is_kernel_text to __is_kernel_text
> bpf: Add struct bpf_ksym
> bpf: Add name to struct bpf_ksym
> bpf: Add lnode list node to struct bpf_ksym
> bpf: Add bpf_kallsyms_tree tree
> bpf: Move bpf_tree add/del from bpf_prog_ksym_node_add/del
> bpf: Separate kallsyms add/del functions
> bpf: Add bpf_ksym_add/del functions
> bpf: Re-initialize lnode in bpf_ksym_del
> bpf: Rename bpf_tree to bpf_progs_tree
> bpf: Add trampolines to kallsyms
> bpf: Add dispatchers to kallsyms
> bpf: Sort bpf kallsyms symbols
>
> arch/x86/mm/init_32.c | 14 ++++++----
> include/linux/bpf.h | 54 ++++++++++++++++++++++++++------------
> include/linux/filter.h | 13 +++-------
> kernel/bpf/core.c | 182 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++--------------------------------
> kernel/bpf/dispatcher.c | 6 +++++
> kernel/bpf/trampoline.c | 23 ++++++++++++++++
> kernel/events/core.c | 4 +--
> net/core/filter.c | 5 ++--
> 8 files changed, 219 insertions(+), 82 deletions(-)
>
--
- Arnaldo
next prev parent reply other threads:[~2020-02-11 19:14 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-02-08 15:41 [PATCH 00/14] bpf: Add trampoline and dispatcher to /proc/kallsyms Jiri Olsa
2020-02-08 15:41 ` [PATCH 01/14] x86/mm: Rename is_kernel_text to __is_kernel_text Jiri Olsa
2020-02-08 15:41 ` [PATCH 02/14] bpf: Add bpf_trampoline_ name prefix for DECLARE_BPF_DISPATCHER Jiri Olsa
2020-02-08 15:41 ` [PATCH 03/14] bpf: Add struct bpf_ksym Jiri Olsa
2020-02-08 15:41 ` [PATCH 04/14] bpf: Add name to " Jiri Olsa
2020-02-08 15:42 ` [PATCH 05/14] bpf: Add lnode list node " Jiri Olsa
2020-02-08 15:42 ` [PATCH 06/14] bpf: Add bpf_kallsyms_tree tree Jiri Olsa
2020-02-11 18:21 ` Andrii Nakryiko
2020-02-12 10:49 ` Jiri Olsa
2020-02-08 15:42 ` [PATCH 07/14] bpf: Move bpf_tree add/del from bpf_prog_ksym_node_add/del Jiri Olsa
2020-02-08 15:42 ` [PATCH 08/14] bpf: Separate kallsyms add/del functions Jiri Olsa
2020-02-08 15:42 ` [PATCH 09/14] bpf: Add bpf_ksym_add/del functions Jiri Olsa
2020-02-08 15:42 ` [PATCH 10/14] bpf: Re-initialize lnode in bpf_ksym_del Jiri Olsa
2020-02-11 18:28 ` Andrii Nakryiko
2020-02-12 10:43 ` Jiri Olsa
2020-02-08 15:42 ` [PATCH 11/14] bpf: Rename bpf_tree to bpf_progs_tree Jiri Olsa
2020-02-08 15:42 ` [PATCH 12/14] bpf: Add trampolines to kallsyms Jiri Olsa
2020-02-11 18:51 ` Andrii Nakryiko
2020-02-12 11:10 ` Jiri Olsa
2020-02-12 16:33 ` Andrii Nakryiko
2020-02-12 22:58 ` Jiri Olsa
2020-02-12 23:02 ` Jiri Olsa
2020-02-08 15:42 ` [PATCH 13/14] bpf: Add dispatchers " Jiri Olsa
2020-02-11 19:03 ` Andrii Nakryiko
2020-02-12 10:52 ` Jiri Olsa
2020-02-08 15:42 ` [PATCH 14/14] bpf: Sort bpf kallsyms symbols Jiri Olsa
2020-02-11 19:12 ` Andrii Nakryiko
2020-02-10 15:51 ` [PATCH 00/14] bpf: Add trampoline and dispatcher to /proc/kallsyms Björn Töpel
2020-02-10 16:17 ` Jiri Olsa
2020-02-11 19:32 ` Arnaldo Carvalho de Melo
2020-02-12 11:13 ` Jiri Olsa
2020-02-12 13:31 ` Arnaldo Carvalho de Melo
2020-02-12 22:40 ` Jiri Olsa
2020-02-13 16:23 ` Jiri Olsa
2020-02-11 19:13 ` Arnaldo Carvalho de Melo [this message]
2020-02-12 10:46 ` Jiri Olsa
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