From: He Kuang <hekuang@huawei.com> To: Alexei Starovoitov <ast@plumgrid.com>, Steven Rostedt <rostedt@goodmis.org> Cc: Ingo Molnar <mingo@kernel.org>, Namhyung Kim <namhyung@kernel.org>, Arnaldo Carvalho de Melo <acme@infradead.org>, Jiri Olsa <jolsa@redhat.com>, Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>, Linux API <linux-api@vger.kernel.org>, Network Development <netdev@vger.kernel.org>, LKML <linux-kernel@vger.kernel.org>, Linus Torvalds <torvalds@linux-foundation.org>, Peter Zijlstra <peterz@infradead.org>, "Eric W. Biederman" <ebiederm@xmission.com>, <wangnan0@huawei.com> Subject: Re: [PATCH v3 linux-trace 1/8] tracing: attach eBPF programs to tracepoints and syscalls Date: Mon, 16 Feb 2015 19:26:46 +0800 [thread overview] Message-ID: <54E1D3F6.3040500@huawei.com> (raw) In-Reply-To: <CAMEtUuzY_Po=WtFEFg1aqzJ8dEF4rHGcWDsaS44KYgACMNPPgA@mail.gmail.com> Hi, Alexei Another suggestion on bpf syscall interface. Currently, BPF + syscalls/kprobes depends on CONFIG_BPF_SYSCALL. In kernel used on commercial products, CONFIG_BPF_SYSCALL is probably disabled, in this case, bpf bytecode cannot be loaded to the kernel. If we turn the functionality of BPF_SYSCALL into a loadable module, then we can use it without any dependencies on the kernel. What about change bpf syscall to a /dev node or /sys file which can be exported by a kernel module?
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From: He Kuang <hekuang@huawei.com> To: Alexei Starovoitov <ast@plumgrid.com>, Steven Rostedt <rostedt@goodmis.org> Cc: Ingo Molnar <mingo@kernel.org>, Namhyung Kim <namhyung@kernel.org>, Arnaldo Carvalho de Melo <acme@infradead.org>, Jiri Olsa <jolsa@redhat.com>, Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>, Linux API <linux-api@vger.kernel.org>, Network Development <netdev@vger.kernel.org>, LKML <linux-kernel@vger.kernel.org>, Linus Torvalds <torvalds@linux-foundation.org>, Peter Zijlstra <peterz@infradead.org>, "Eric W. Biederman" <ebiederm@xmission.com>, wangnan0@huawei.com Subject: Re: [PATCH v3 linux-trace 1/8] tracing: attach eBPF programs to tracepoints and syscalls Date: Mon, 16 Feb 2015 19:26:46 +0800 [thread overview] Message-ID: <54E1D3F6.3040500@huawei.com> (raw) In-Reply-To: <CAMEtUuzY_Po=WtFEFg1aqzJ8dEF4rHGcWDsaS44KYgACMNPPgA@mail.gmail.com> Hi, Alexei Another suggestion on bpf syscall interface. Currently, BPF + syscalls/kprobes depends on CONFIG_BPF_SYSCALL. In kernel used on commercial products, CONFIG_BPF_SYSCALL is probably disabled, in this case, bpf bytecode cannot be loaded to the kernel. If we turn the functionality of BPF_SYSCALL into a loadable module, then we can use it without any dependencies on the kernel. What about change bpf syscall to a /dev node or /sys file which can be exported by a kernel module?
next prev parent reply other threads:[~2015-02-16 11:29 UTC|newest] Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top 2015-02-11 0:22 [PATCH v3 linux-trace 1/8] tracing: attach eBPF programs to tracepoints and syscalls Alexei Starovoitov 2015-02-11 0:50 ` Steven Rostedt 2015-02-11 0:50 ` Steven Rostedt 2015-02-11 9:33 ` Peter Zijlstra 2015-02-11 9:45 ` Peter Zijlstra 2015-02-11 9:45 ` Peter Zijlstra 2015-02-11 10:15 ` Peter Zijlstra 2015-02-11 10:15 ` Peter Zijlstra 2015-02-12 4:58 ` Hekuang 2015-02-12 4:58 ` Hekuang 2015-02-12 4:58 ` Hekuang 2015-02-16 11:26 ` He Kuang [this message] 2015-02-16 11:26 ` He Kuang -- strict thread matches above, loose matches on Subject: below -- 2015-02-23 18:55 Alexei Starovoitov 2015-02-23 18:55 ` Alexei Starovoitov 2015-02-14 23:02 Alexei Starovoitov 2015-02-14 23:02 ` Alexei Starovoitov 2015-02-14 22:54 Alexei Starovoitov 2015-02-14 22:54 ` Alexei Starovoitov 2015-02-14 22:48 Alexei Starovoitov 2015-02-14 22:48 ` Alexei Starovoitov 2015-02-11 6:33 Alexei Starovoitov 2015-02-11 6:33 ` Alexei Starovoitov 2015-02-11 12:51 ` Steven Rostedt 2015-02-11 12:51 ` Steven Rostedt 2015-02-11 3:04 Alexei Starovoitov 2015-02-11 4:31 ` Steven Rostedt 2015-02-11 4:31 ` Steven Rostedt 2015-02-10 19:53 Alexei Starovoitov 2015-02-10 21:53 ` Steven Rostedt 2015-02-10 21:53 ` Steven Rostedt 2015-02-11 10:28 ` Peter Zijlstra 2015-02-11 10:28 ` Peter Zijlstra 2015-02-10 6:10 Alexei Starovoitov 2015-02-10 6:10 ` Alexei Starovoitov 2015-02-10 13:05 ` Steven Rostedt 2015-02-10 13:05 ` Steven Rostedt 2015-02-10 5:51 Alexei Starovoitov 2015-02-10 5:51 ` Alexei Starovoitov 2015-02-10 12:27 ` Steven Rostedt 2015-02-10 3:45 [PATCH v3 linux-trace 0/8] tracing: attach eBPF programs to tracepoints/syscalls/kprobe Alexei Starovoitov 2015-02-10 3:45 ` [PATCH v3 linux-trace 1/8] tracing: attach eBPF programs to tracepoints and syscalls Alexei Starovoitov 2015-02-10 3:45 ` Alexei Starovoitov 2015-02-10 4:46 ` Steven Rostedt 2015-02-10 4:46 ` Steven Rostedt 2015-02-10 5:13 ` Steven Rostedt 2015-02-10 5:13 ` Steven Rostedt
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