From: Daniel Borkmann <dborkman@redhat.com>
To: Alexei Starovoitov <ast@plumgrid.com>
Cc: "David S. Miller" <davem@davemloft.net>,
Ingo Molnar <mingo@kernel.org>,
Linus Torvalds <torvalds@linux-foundation.org>,
Steven Rostedt <rostedt@goodmis.org>,
Chema Gonzalez <chema@google.com>,
Eric Dumazet <edumazet@google.com>,
Peter Zijlstra <a.p.zijlstra@chello.nl>,
Arnaldo Carvalho de Melo <acme@infradead.org>,
Jiri Olsa <jolsa@redhat.com>,
Thomas Gleixner <tglx@linutronix.de>,
"H. Peter Anvin" <hpa@zytor.com>,
Andrew Morton <akpm@linux-foundation.org>,
Kees Cook <keescook@chromium.org>,
linux-api@vger.kernel.org, netdev@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH RFC net-next 11/14] tracing: allow eBPF programs to be attached to events
Date: Tue, 01 Jul 2014 10:30:56 +0200 [thread overview]
Message-ID: <53B271C0.5090008@redhat.com> (raw)
In-Reply-To: <1403913966-4927-12-git-send-email-ast@plumgrid.com>
On 06/28/2014 02:06 AM, Alexei Starovoitov wrote:
> User interface:
> cat bpf_123 > /sys/kernel/debug/tracing/__event__/filter
>
> where 123 is an id of the eBPF program priorly loaded.
> __event__ is static tracepoint event.
> (kprobe events will be supported in the future patches)
>
> eBPF programs can call in-kernel helper functions to:
> - lookup/update/delete elements in maps
> - memcmp
> - trace_printk
> - load_pointer
> - dump_stack
Are there plans to let eBPF replace the generic event
filtering framework in tracing?
> Signed-off-by: Alexei Starovoitov <ast@plumgrid.com>
> ---
> include/linux/ftrace_event.h | 5 +
> include/trace/bpf_trace.h | 29 +++++
> include/trace/ftrace.h | 10 ++
> include/uapi/linux/bpf.h | 5 +
> kernel/trace/Kconfig | 1 +
> kernel/trace/Makefile | 1 +
> kernel/trace/bpf_trace.c | 217 ++++++++++++++++++++++++++++++++++++
> kernel/trace/trace.h | 3 +
> kernel/trace/trace_events.c | 7 ++
> kernel/trace/trace_events_filter.c | 72 +++++++++++-
> 10 files changed, 349 insertions(+), 1 deletion(-)
> create mode 100644 include/trace/bpf_trace.h
> create mode 100644 kernel/trace/bpf_trace.c
next prev parent reply other threads:[~2014-07-01 8:31 UTC|newest]
Thread overview: 70+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-06-28 0:05 [PATCH RFC net-next 00/14] BPF syscall, maps, verifier, samples Alexei Starovoitov
2014-06-28 0:05 ` [PATCH RFC net-next 01/14] net: filter: split filter.c into two files Alexei Starovoitov
2014-07-02 4:23 ` Namhyung Kim
2014-07-02 5:35 ` Alexei Starovoitov
2014-06-28 0:05 ` [PATCH RFC net-next 02/14] net: filter: split filter.h and expose eBPF to user space Alexei Starovoitov
2014-06-28 0:05 ` [PATCH RFC net-next 03/14] bpf: introduce syscall(BPF, ...) and BPF maps Alexei Starovoitov
2014-06-28 0:16 ` Andy Lutomirski
2014-06-28 5:55 ` Alexei Starovoitov
2014-06-28 6:25 ` Andy Lutomirski
2014-06-28 6:43 ` Alexei Starovoitov
2014-06-28 15:34 ` Andy Lutomirski
2014-06-28 20:49 ` Alexei Starovoitov
2014-06-29 1:52 ` Andy Lutomirski
2014-06-29 6:36 ` Alexei Starovoitov
2014-06-30 22:09 ` Andy Lutomirski
2014-07-01 5:47 ` Alexei Starovoitov
2014-07-01 15:11 ` Andy Lutomirski
2014-07-02 5:33 ` Alexei Starovoitov
2014-07-03 1:43 ` Andy Lutomirski
2014-07-03 2:29 ` Alexei Starovoitov
2014-07-04 15:17 ` Andy Lutomirski
2014-07-05 21:59 ` Alexei Starovoitov
2014-06-28 0:05 ` [PATCH RFC net-next 04/14] bpf: update MAINTAINERS entry Alexei Starovoitov
2014-06-28 0:18 ` Joe Perches
2014-06-28 5:59 ` Alexei Starovoitov
2014-06-28 0:05 ` [PATCH RFC net-next 05/14] bpf: add lookup/update/delete/iterate methods to BPF maps Alexei Starovoitov
2014-06-28 0:05 ` [PATCH RFC net-next 06/14] bpf: add hashtable type of " Alexei Starovoitov
2014-06-28 0:05 ` [PATCH RFC net-next 07/14] bpf: expand BPF syscall with program load/unload Alexei Starovoitov
2014-06-28 0:19 ` Andy Lutomirski
2014-06-28 6:12 ` Alexei Starovoitov
2014-06-28 6:28 ` Andy Lutomirski
2014-06-28 7:26 ` Alexei Starovoitov
2014-06-28 15:21 ` Greg KH
2014-06-28 15:35 ` Andy Lutomirski
2014-06-30 20:39 ` Alexei Starovoitov
2014-06-30 10:06 ` David Laight
2014-06-28 0:06 ` [PATCH RFC net-next 08/14] bpf: add eBPF verifier Alexei Starovoitov
2014-06-28 16:01 ` Andy Lutomirski
2014-06-28 20:25 ` Alexei Starovoitov
2014-06-29 1:58 ` Andy Lutomirski
2014-06-29 6:20 ` Alexei Starovoitov
2014-07-01 8:05 ` Daniel Borkmann
2014-07-01 20:04 ` Alexei Starovoitov
2014-07-02 8:11 ` David Laight
2014-07-02 22:43 ` Alexei Starovoitov
2014-07-02 5:05 ` Namhyung Kim
2014-07-02 5:57 ` Alexei Starovoitov
2014-07-02 22:22 ` Chema Gonzalez
2014-07-02 23:04 ` Alexei Starovoitov
2014-07-02 23:35 ` Chema Gonzalez
2014-07-03 0:01 ` Alexei Starovoitov
2014-07-03 9:13 ` David Laight
2014-07-03 17:41 ` Alexei Starovoitov
2014-06-28 0:06 ` [PATCH RFC net-next 09/14] bpf: allow eBPF programs to use maps Alexei Starovoitov
2014-06-28 0:06 ` [PATCH RFC net-next 10/14] net: sock: allow eBPF programs to be attached to sockets Alexei Starovoitov
2014-06-28 0:06 ` [PATCH RFC net-next 11/14] tracing: allow eBPF programs to be attached to events Alexei Starovoitov
2014-07-01 8:30 ` Daniel Borkmann [this message]
2014-07-01 20:06 ` Alexei Starovoitov
2014-07-02 5:32 ` Namhyung Kim
2014-07-02 6:14 ` Alexei Starovoitov
2014-07-02 6:39 ` Namhyung Kim
2014-07-02 7:29 ` Alexei Starovoitov
2014-06-28 0:06 ` [PATCH RFC net-next 12/14] samples: bpf: add mini eBPF library to manipulate maps and programs Alexei Starovoitov
2014-06-28 0:06 ` [PATCH RFC net-next 13/14] samples: bpf: example of stateful socket filtering Alexei Starovoitov
2014-06-28 0:21 ` Andy Lutomirski
2014-06-28 6:21 ` Alexei Starovoitov
2014-06-28 0:06 ` [PATCH RFC net-next 14/14] samples: bpf: example of tracing filters with eBPF Alexei Starovoitov
2014-06-30 23:09 ` [PATCH RFC net-next 00/14] BPF syscall, maps, verifier, samples Kees Cook
2014-07-01 7:18 ` Daniel Borkmann
2014-07-02 16:39 ` Kees Cook
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