Re: [PATCH 0/2] Build ORC fast lookup table in scripts/sorttable tool

changhuaixin
2020-05-27T01:11:46Z

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