Message-ID: <558D0FE8.4010907@plumgrid.com>
Date: Fri, 26 Jun 2015 01:40:08 -0700
From: Alexei Starovoitov <ast@plumgrid.com>
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To: Wang Nan <wangnan0@huawei.com>, acme@kernel.org, brendan.d.gregg@gmail.com,
        daniel@iogearbox.net, namhyung@kernel.org,
        masami.hiramatsu.pt@hitachi.com, paulus@samba.org,
        a.p.zijlstra@chello.nl, mingo@redhat.com, jolsa@kernel.org,
        dsahern@gmail.com
CC: linux-kernel@vger.kernel.org, lizefan@huawei.com, hekuang@huawei.com,
        xiakaixu@huawei.com, pi3orama@163.com
Subject: Re: [RFC PATCH v8 47/49] perf tools: Generate prologue for BPF programs
References: <1435149113-51142-1-git-send-email-wangnan0@huawei.com> <1435149113-51142-48-git-send-email-wangnan0@huawei.com>
In-Reply-To: <1435149113-51142-48-git-send-email-wangnan0@huawei.com>
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On 6/24/15 5:31 AM, Wang Nan wrote:
> This patch generates prologue for each 'struct probe_trace_event' for
> fetching arguments for BPF programs.
>
> After bpf__probe(), iterate over each programs to check whether
> prologue is required. If non of tev have argument, simply skip
> preprocessor hooking. For those who prologue is required, calls
> bpf__gen_prologue() and paste original instruction after prologue.

please don't abbreviate tev, pev in commit logs. It's hard to read
for anyone but core perf experts.

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