From: shile.zhang@linux.alibaba.com
To: Masahiro Yamada <yamada.masahiro@socionext.com>,
Michal Marek <michal.lkml@markovi.net>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
Josh Poimboeuf <jpoimboe@redhat.com>,
x86@kernel.org
Cc: "H . Peter Anvin" <hpa@zytor.com>,
linux-kernel@vger.kernel.org, linux-kbuild@vger.kernel.org,
Shile Zhang <shile.zhang@linux.alibaba.com>
Subject: [RFC PATCH v2 0/3] Speed booting by sorting ORC unwind tables at build time
Date: Fri, 8 Nov 2019 15:11:05 +0800 [thread overview]
Message-ID: <20191108071108.72132-1-shile.zhang@linux.alibaba.com> (raw)
From: Shile Zhang <shile.zhang@linux.alibaba.com>
This series tries to sort the ORC unwind tables in vmlinux link phase at
build time, help to speed up kernel boot. It's significant for boot time
sensitive products, such as embedded device in IoT, or serverless in
cloud.
Thanks!
Changes from RFC v2:
- removed new added Kconfig and runtime sort code, advised by Josh Poimboeuf.
- some minor refactoring.
v1:
https://www.lkml.org/lkml/2019/11/7/611
Shile Zhang (3):
scripts: Add sortorctable to sort ORC unwind tables
kbuild: Sort ORC unwind tables in vmlinux link phase
x86/unwind/orc: remove run-time ORC unwind tables sort
arch/x86/kernel/unwind_orc.c | 7 +-
scripts/.gitignore | 1 +
scripts/Makefile | 2 +
scripts/link-vmlinux.sh | 14 ++
scripts/sortorctable.c | 251 +++++++++++++++++++++++++++++++++++
scripts/sortorctable.h | 26 ++++
6 files changed, 298 insertions(+), 3 deletions(-)
create mode 100644 scripts/sortorctable.c
create mode 100644 scripts/sortorctable.h
--
2.24.0.rc2
next reply other threads:[~2019-11-08 7:11 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-11-08 7:11 shile.zhang [this message]
2019-11-08 7:11 ` [RFC PATCH v2 1/3] scripts: Add sortorctable to sort ORC unwind tables shile.zhang
2019-11-08 9:55 ` Peter Zijlstra
2019-11-11 2:46 ` Shile Zhang
2019-11-08 7:11 ` [RFC PATCH v2 2/3] kbuild: Sort ORC unwind tables in vmlinux link phase shile.zhang
2019-11-08 7:11 ` [RFC PATCH v2 3/3] x86/unwind/orc: remove run-time ORC unwind tables sort shile.zhang
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