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From: changhuaixin <changhuaixin@linux.alibaba.com>
To: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: changhuaixin <changhuaixin@linux.alibaba.com>,
	linux-kernel@vger.kernel.org, linux-kbuild@vger.kernel.org,
	bp@alien8.de, hpa@zytor.com, luto@amacapital.net,
	michal.lkml@markovi.net, mingo@redhat.com, peterz@infradead.org,
	tglx@linutronix.de, x86@kernel.org,
	yamada.masahiro@socionext.com
Subject: Re: [PATCH 0/2] Build ORC fast lookup table in scripts/sorttable tool
Date: Mon, 25 May 2020 11:33:00 +0800	[thread overview]
Message-ID: <F00701B2-F4AD-48B2-9710-33E4CFA5C5AA@linux.alibaba.com> (raw)
In-Reply-To: <20200522182815.ezanmvbemhzq2fmm@treble>

Thanks for your kindly reply. Let me have a check.

> On May 23, 2020, at 2:28 AM, Josh Poimboeuf <jpoimboe@redhat.com> wrote:
> 
> On Wed, Apr 29, 2020 at 02:46:24PM +0800, Huaixin Chang wrote:
>> Move building of fast lookup table from boot to sorttable tool. This saves us
>> 6380us boot time on Intel(R) Xeon(R) CPU E5-2682 v4 @ 2.50GHz with cores.
>> 
>> Huaixin Chang (2):
>>  scripts/sorttable: Build orc fast lookup table via sorttable tool
>>  x86/unwind/orc: Remove unwind_init() from x86 boot
>> 
>> arch/x86/include/asm/unwind.h |  2 -
>> arch/x86/kernel/setup.c       |  2 -
>> arch/x86/kernel/unwind_orc.c  | 51 ----------------------
>> scripts/sorttable.h           | 99 ++++++++++++++++++++++++++++++++++++++++---
>> 4 files changed, 92 insertions(+), 62 deletions(-)
> 
> I tested this (rebased on tip/master), it seems to break ORC
> completely... e.g. /proc/self/stack is empty.
> 
> -- 
> Josh


  reply	other threads:[~2020-05-27  1:11 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-04-29  6:46 Huaixin Chang
2020-04-29  6:46 ` [PATCH 1/2] scripts/sorttable: Build orc fast lookup table via sorttable tool Huaixin Chang
2020-04-29  6:46 ` [PATCH 2/2] x86/unwind/orc: Remove unwind_init() from x86 boot Huaixin Chang
2020-04-29  8:49 ` [PATCH 0/2] Build ORC fast lookup table in scripts/sorttable tool Peter Zijlstra
2020-04-30  2:32   ` changhuaixin
2020-04-30  4:06     ` Josh Poimboeuf
2020-04-30  4:10       ` Josh Poimboeuf
2020-05-22 18:28 ` Josh Poimboeuf
2020-05-25  3:33   ` changhuaixin [this message]
     [not found]   ` <482837A8-E9D9-4229-B7B1-8E14403FB2AC@linux.alibaba.com>
2020-06-01 17:38     ` Josh Poimboeuf
2020-06-03 13:47       ` changhuaixin
2020-06-03 14:31       ` [PATCH v2 0/3] " Huaixin Chang
2020-06-03 14:31         ` [PATCH 1/3] scripts/sorttable: Change section type of orc_lookup to SHT_PROGBITS Huaixin Chang
2020-06-03 14:31         ` [PATCH 2/3] scripts/sorttable: Build orc fast lookup table via sorttable tool Huaixin Chang
2020-06-03 14:31         ` [PATCH 3/3] x86/unwind/orc: Simplify unwind_init() for x86 boot Huaixin Chang
2020-06-03 14:39       ` [PATCH v3 0/3] Build ORC fast lookup table in scripts/sorttable tool Huaixin Chang
2020-06-03 14:39         ` [PATCH 1/3] scripts/sorttable: Change section type of orc_lookup to SHT_PROGBITS Huaixin Chang
2020-06-03 14:39         ` [PATCH 2/3] scripts/sorttable: Build orc fast lookup table via sorttable tool Huaixin Chang
2020-06-03 14:39         ` [PATCH 3/3] x86/unwind/orc: Simplify unwind_init() for x86 boot Huaixin Chang
2020-06-29  2:14         ` [PATCH v3 0/3] Build ORC fast lookup table in scripts/sorttable tool changhuaixin

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