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From: Jiong Wang <jiong.wang@netronome.com>
To: Alexei Starovoitov <alexei.starovoitov@gmail.com>
Cc: Jiong Wang <jiong.wang@netronome.com>,
	Edward Cree <ecree@solarflare.com>,
	Alexei Starovoitov <ast@kernel.org>,
	Andrii Nakryiko <andriin@fb.com>,
	"Naveen N. Rao" <naveen.n.rao@linux.vnet.ibm.com>,
	Daniel Borkmann <daniel@iogearbox.net>, bpf <bpf@vger.kernel.org>,
	Network Development <netdev@vger.kernel.org>,
	Michael Ellerman <mpe@ellerman.id.au>,
	Jakub Kicinski <jakub.kicinski@netronome.com>
Subject: Re: [PATCH] bpf: optimize constant blinding
Date: Mon, 17 Jun 2019 22:01:56 +0100
Message-ID: <87muig3ozf.fsf@netronome.com> (raw)
In-Reply-To: <CAADnVQLt7=9XQRccerLqHO8cdXTLy-uNBt-JOjbx=bAFouLf3Q@mail.gmail.com>


Alexei Starovoitov writes:

> On Mon, Jun 17, 2019 at 1:40 PM Jiong Wang <jiong.wang@netronome.com> wrote:
>>
>> After digest Alexei and Andrii's reply, I still don't see the need to turn
>> branch target into list, and I am not sure whether pool based list sound
>> good? it saves size, resize pool doesn't invalid allocated node (the offset
>> doesn't change) but requires one extra addition to calculate the pointer.
>
> I don't think it worth to do a pool to accelerate kmalloc.

Got it.

> I doubt it will be faster either.

Will benchmark.

Regards,
Jiong

  reply index

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-06-12 11:32 Naveen N. Rao
2019-06-12 14:47 ` Alexei Starovoitov
2019-06-12 15:04   ` Jiong Wang
2019-06-12 15:25     ` Jiong Wang
2019-06-12 15:28       ` Alexei Starovoitov
2019-06-14 15:13         ` Jiong Wang
2019-06-14 17:05           ` Alexei Starovoitov
2019-06-14 22:28             ` Andrii Nakryiko
2019-06-17 19:47           ` Edward Cree
2019-06-17 19:59             ` Jiong Wang
2019-06-17 20:11               ` Edward Cree
2019-06-17 20:40                 ` Jiong Wang
2019-06-17 20:53                   ` Alexei Starovoitov
2019-06-17 21:01                     ` Jiong Wang [this message]
2019-06-17 21:16                   ` Edward Cree
2019-06-19 20:45                     ` Jiong Wang
2019-06-14  4:30 ` kbuild test robot

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