From: Arnaldo Carvalho de Melo <acme@kernel.org>
To: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: He Kuang <hekuang@huawei.com>,
ast@plumgrid.com, davem@davemloft.net, mingo@redhat.com,
a.p.zijlstra@chello.nl, jolsa@kernel.org, wangnan0@huawei.com,
lizefan@kernel.org, linux-kernel@vger.kernel.org,
pi3orama@163.com
Subject: Re: [RFC PATCH 0/6] perf bpf: Probing with local variable
Date: Tue, 5 May 2015 22:44:07 -0300 [thread overview]
Message-ID: <20150506014407.GB10475@kernel.org> (raw)
In-Reply-To: <55497061.8090903@hitachi.com>
Em Wed, May 06, 2015 at 10:37:37AM +0900, Masami Hiramatsu escreveu:
> On 2015/05/05 19:10, He Kuang wrote:
> > (79) r3 = *(u64 *)(r6 +88)
> > (bf) r9 = r3
> > (bf) r2 = r7
> > (bf) r3 = r8
> > (bf) r4 = r9
> Hmm, this idea looks good to me, I need to learn what the bpf needs for review.
> BTW, if it is so easily to compose the byte code in perf, can we do it in the
> kernel too? I'd like to check the possibility of replacing the old fetch_arg
> functions with these byte code for optimizing performance and reduce redundant
> functionality. :)
Excellent idea! ;-)
- Arnaldo
prev parent reply other threads:[~2015-05-06 1:44 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-05-05 10:10 [RFC PATCH 0/6] perf bpf: Probing with local variable He Kuang
2015-05-05 10:10 ` [RFC PATCH 1/6] perf bpf: Add headers for generate bpf bytecode He Kuang
2015-05-05 22:38 ` Alexei Starovoitov
2015-05-05 10:10 ` [RFC PATCH 2/6] perf bpf: Add pt_regs convert table for x86 He Kuang
2015-05-05 22:44 ` Alexei Starovoitov
2015-05-08 8:02 ` Masami Hiramatsu
2015-05-05 10:10 ` [RFC PATCH 3/6] perf bpf: Save pt_regs info from debuginfo He Kuang
2015-05-05 10:10 ` [RFC PATCH 4/6] perf bpf: Convert arglist to bpf prologue He Kuang
2015-05-05 22:54 ` Alexei Starovoitov
2015-05-05 10:10 ` [RFC PATCH 5/6] perf bpf: Process debuginfo for generating " He Kuang
2015-05-05 10:10 ` [RFC PATCH 6/6] perf bpf: Generate bpf prologue for arguments He Kuang
2015-05-05 22:31 ` [RFC PATCH 0/6] perf bpf: Probing with local variable Alexei Starovoitov
2015-05-06 3:58 ` Wang Nan
2015-05-06 4:10 ` Alexei Starovoitov
2015-05-06 4:41 ` Wang Nan
2015-05-06 1:37 ` Masami Hiramatsu
2015-05-06 1:44 ` Arnaldo Carvalho de Melo [this message]
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