From: Peter Zijlstra <peterz@infradead.org>
To: x86@kernel.org, jpoimboe@redhat.com, linux@weissschuh.net,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH 00/10] objtool: Honey, I shrunk the instruction
Date: Thu, 9 Feb 2023 11:22:36 +0100 [thread overview]
Message-ID: <Y+TJbNHT3jDF8wov@hirez.programming.kicks-ass.net> (raw)
In-Reply-To: <Y+QEak2HWlkNuJ3U@fedora.fritz.box>
On Wed, Feb 08, 2023 at 09:22:02PM +0100, Damian Tometzki wrote:
> On Wed, 08. Feb 18:17, Peter Zijlstra wrote:
> > Hi,
> >
> > Boris complained he could no longer build allyesconfig on his 32G desktop
> > machine without having OOM terminate either objtool or chrome.
> >
> > After talking about these patches on IRC, Nathan mentioned the linux-clang CI
> > was also having trouble of recent, and these patches appear to make it happy
> > again.
> >
> > In total these patches shrink an allyesconfig run by about 6G:
> >
> > pre: 5:58.22 real, 226.69 user, 131.22 sys, 26221520 mem
> > post: 5:03.34 real, 210.75 user, 88.80 sys, 20241232 mem
> >
> > Also at:
> >
> > https://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git/log/?h=objtool/core
> >
> Hello Peter,
>
> with clang-17 the build failed:
> In file included from weak.c:10:
> In file included from /home/damian/kernel/linux/tools/objtool/include/objtool/objtool.h:13:
> /home/damian/kernel/linux/tools/objtool/include/objtool/elf.h:88:86: error: '_Static_assert' with no message is a C2x extension [-Werror,-Wc2x-extensions]
> static_assert(offsetof(struct reloc, rela.r_offset) == offsetof(struct reloc, offset));
Oh urgh. Apparently the kernel wrapper went missing in this userspace
project :-)
include/linux/build_bug.h:#define static_assert(expr, ...) __static_assert(expr, ##__VA_ARGS__, #expr)
Anyway, it's that last patch and I meant to do that in a slightly less
horrid way :-)
next prev parent reply other threads:[~2023-02-09 10:22 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-02-08 17:17 [PATCH 00/10] objtool: Honey, I shrunk the instruction Peter Zijlstra
2023-02-08 17:17 ` [PATCH 01/10] objtool: Change arch_decode_instruction() signature Peter Zijlstra
2023-02-13 11:10 ` [tip: objtool/core] " tip-bot2 for Peter Zijlstra
2023-02-23 8:32 ` tip-bot2 for Peter Zijlstra
2023-02-08 17:17 ` [PATCH 02/10] objtool: Make instruction::stack_ops a single-linked list Peter Zijlstra
2023-02-13 11:10 ` [tip: objtool/core] " tip-bot2 for Peter Zijlstra
2023-02-23 8:32 ` tip-bot2 for Peter Zijlstra
2023-02-08 17:17 ` [PATCH 03/10] objtool: Make instruction::alts " Peter Zijlstra
2023-02-13 11:10 ` [tip: objtool/core] " tip-bot2 for Peter Zijlstra
2023-02-23 8:32 ` tip-bot2 for Peter Zijlstra
2023-02-08 17:18 ` [PATCH 04/10] objtool: Shrink instruction::{type,visited} Peter Zijlstra
2023-02-13 11:10 ` [tip: objtool/core] " tip-bot2 for Peter Zijlstra
2023-02-23 8:32 ` tip-bot2 for Peter Zijlstra
2023-02-08 17:18 ` [PATCH 05/10] objtool: Remove instruction::reloc Peter Zijlstra
2023-02-13 11:10 ` [tip: objtool/core] " tip-bot2 for Peter Zijlstra
2023-02-23 8:32 ` tip-bot2 for Peter Zijlstra
2023-02-08 17:18 ` [PATCH 06/10] objtool: Union instruction::{call_dest,jump_table} Peter Zijlstra
2023-02-13 11:10 ` [tip: objtool/core] " tip-bot2 for Peter Zijlstra
2023-02-23 8:32 ` tip-bot2 for Peter Zijlstra
2023-02-08 17:18 ` [PATCH 07/10] objtool: Fix overlapping alternatives Peter Zijlstra
2023-02-13 11:10 ` [tip: objtool/core] " tip-bot2 for Peter Zijlstra
2023-02-23 8:32 ` tip-bot2 for Peter Zijlstra
2023-02-08 17:18 ` [PATCH 08/10] x86: Fix FILL_RETURN_BUFFER Peter Zijlstra
2023-02-13 11:10 ` [tip: objtool/core] " tip-bot2 for Peter Zijlstra
2023-02-23 8:32 ` tip-bot2 for Peter Zijlstra
2023-02-08 17:18 ` [PATCH 09/10] objtool: Remove instruction::list Peter Zijlstra
2023-02-13 11:10 ` [tip: objtool/core] " tip-bot2 for Peter Zijlstra
2023-02-23 8:32 ` tip-bot2 for Peter Zijlstra
2023-02-08 17:18 ` [PATCH 10/10][HACK] objtool: Shrink reloc Peter Zijlstra
2023-02-08 18:35 ` [PATCH 00/10] objtool: Honey, I shrunk the instruction Nathan Chancellor
2023-02-08 20:22 ` Damian Tometzki
2023-02-09 10:22 ` Peter Zijlstra [this message]
2023-02-09 10:56 ` Damian Tometzki
2023-02-09 19:57 ` Josh Poimboeuf
2023-02-10 8:59 ` Peter Zijlstra
2023-02-10 13:47 ` [PATCH 00/10] objtool: Honey, I shrunk the instruction^Wreloc Peter Zijlstra
2023-02-10 1:50 ` [PATCH 00/10] objtool: Honey, I shrunk the instruction Thomas Weißschuh
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