linux-kernel - Re: [PATCH v5 perf, bpf-next 3/7] perf, bpf: introduce PERF_RECORD_BPF

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Message-ID: <20190108202915.GE30894@hirez.programming.kicks-ass.net>
Date:   Tue, 8 Jan 2019 21:29:15 +0100
From:   Peter Zijlstra <peterz@...radead.org>
To:     Song Liu <songliubraving@...com>
Cc:     linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
        acme@...nel.org, ast@...nel.org, daniel@...earbox.net,
        kernel-team@...com
Subject: Re: [PATCH v5 perf, bpf-next 3/7] perf, bpf: introduce
 PERF_RECORD_BPF_EVENT

On Thu, Dec 20, 2018 at 10:29:00AM -0800, Song Liu wrote:
> The following example shows kernel symbols for a BPF program with 7
> sub programs:
> 
>     ffffffffa0257cf9 t bpf_prog_b07ccb89267cf242_F
>     ffffffffa02592e1 t bpf_prog_2dcecc18072623fc_F
>     ffffffffa025b0e9 t bpf_prog_bb7a405ebaec5d5c_F
>     ffffffffa025dd2c t bpf_prog_a7540d4a39ec1fc7_F
>     ffffffffa025fcca t bpf_prog_05762d4ade0e3737_F
>     ffffffffa026108f t bpf_prog_db4bd11e35df90d4_F
>     ffffffffa0263f00 t bpf_prog_89d64e4abf0f0126_F
>     ffffffffa0257cf9 t bpf_prog_ae31629322c4b018__dummy_tracepoi

We should probably specify somewhere that the name can include a
'[module]' part just like normal kallsyms. Even though you don't
currently use that.