netdev - Re: Pull patches from tip/perf/core to bpf-next

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Message-ID: <20190206034729.ao2gifc4phbhrhib@ast-mbp>
Date:   Tue, 5 Feb 2019 19:47:30 -0800
From:   Alexei Starovoitov <alexei.starovoitov@...il.com>
To:     Song Liu <songliubraving@...com>
Cc:     Daniel Borkmann <daniel@...earbox.net>,
        Alexei Starovoitov <ast@...nel.org>,
        Kernel Team <Kernel-team@...com>,
        Netdev <netdev@...r.kernel.org>
Subject: Re: Pull patches from tip/perf/core to bpf-next

On Wed, Feb 06, 2019 at 03:44:29AM +0000, Song Liu wrote:
> 
> 
> > On Feb 5, 2019, at 7:36 PM, Alexei Starovoitov <alexei.starovoitov@...il.com> wrote:
> > 
> > On Tue, Feb 05, 2019 at 10:47:06PM +0000, Song Liu wrote:
> >> Hi Alexei and Daniel, 
> >> 
> >> The following patches are required for BPF introspection in perf tools. 
> >> Please pull them to bpf-next, so that we get all the dependencies in one
> >> tree. 
> >> 
> >> Thanks,
> >> Song
> >> 
> >> (from 1/10 to 10/10)
> >> 76193a94522f perf, bpf: Introduce PERF_RECORD_KSYMBOL
> >> d764ac646491 tools headers uapi: Sync tools/include/uapi/linux/perf_event.h
> >> 6ee52e2a3fe4 perf, bpf: Introduce PERF_RECORD_BPF_EVENT
> >> df063c83aa2c tools headers uapi: Sync tools/include/uapi/linux/perf_event.h
> >> 9aa0bfa370b2 perf tools: Handle PERF_RECORD_KSYMBOL
> >> 45178a928a4b perf tools: Handle PERF_RECORD_BPF_EVENT
> >> 7b612e291a5a perf tools: Synthesize PERF_RECORD_* for loaded BPF programs
> >> a40b95bcd30c perf top: Synthesize BPF events for pre-existing loaded BPF programs
> >> 6934058d9fb6 bpf: Add module name [bpf] to ksymbols for bpf programs
> >> 811184fb6977 perf bpf: Fix synthesized PERF_RECORD_KSYMBOL/BPF_EVENT
> > 
> > yes. we can certainly do that.
> > Do you have bpf specific patches that depend on that ?
> > Since it's rc5 already. Are you planning to send them within next week?
> 
> BPF introspection work depends on these patches. I have been hopping 
> between perf tree and bpf-next tree. I think basing the series up on 
> bpf-next plus these patches leads least conflicts. 
> 
> I do plan to send the series within next week. 
> 
> On a second thought, maybe I should send based on perf tree, and worry
> about the conflicts later? It is really heavier on perf side. 

whichever way is easier.
if bpf-next is the best use that as a base with above patches.
Once your set gets Acks from perf folks we can push above patches
from tip first and then apply your set.