From: "H. Peter Anvin" <hpa@zytor.com>
To: Andi Kleen <ak@linux.intel.com>, linux-kernel@vger.kernel.org
Cc: linux-kbuild@vger.kernel.org, x86@kernel.org
Subject: Re: [PATCH 12/17] Kbuild, lto: Set TMPDIR for LTO
Date: Thu, 13 Feb 2014 20:26:50 -0800 [thread overview]
Message-ID: <52FD9B0A.8030309@zytor.com> (raw)
In-Reply-To: <1391846481-31491-12-git-send-email-ak@linux.intel.com>
On 02/08/2014 12:01 AM, Andi Kleen wrote:
> LTO gcc puts a lot of data into $TMPDIR, essentially another copy
> of the object directory to pass the repartitioned object files
> to the code generation processes.
>
> TMPDIR defaults to /tmp With /tmp as tmpfs it's easy to drive systems to
> out of memory, because they will compete with the already high anonymous
> memory consumption of the wpa LTO pass.
>
> When LTO is set always set TMPDIR to the object directory. This could
> be slightly slower, but is far safer and eliminates another parameter
> the LTO user would need to set manually.
>
> I made it conditional on LTO for now.
I think this really ought to use ?= so it doesn't override a TMPDIR
explicitly set by the user.
-hpa
next prev parent reply other threads:[~2014-02-14 4:26 UTC|newest]
Thread overview: 45+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-02-08 8:01 [PATCH 01/17] x86, lto: Disable LTO for the x86 VDSO Andi Kleen
2014-02-08 8:01 ` [PATCH 02/17] x86, lto: Disable fancy hweight optimizations for LTO v2 Andi Kleen
2014-02-08 18:52 ` H. Peter Anvin
2014-02-08 20:21 ` Andi Kleen
2014-02-08 21:43 ` H. Peter Anvin
2014-02-08 8:01 ` [PATCH 03/17] lto: Make asmlinkage __visible Andi Kleen
2014-02-14 4:30 ` [tip:x86/asmlinkage] " tip-bot for Andi Kleen
2014-02-14 9:10 ` Borislav Petkov
2014-02-14 14:38 ` Andi Kleen
2014-02-08 8:01 ` [PATCH 04/17] lto, workaround: Add workaround for initcall reordering Andi Kleen
2014-02-14 4:30 ` [tip:x86/asmlinkage] " tip-bot for Andi Kleen
2014-02-08 8:01 ` [PATCH 05/17] lto: Handle LTO common symbols in module loader Andi Kleen
2014-02-12 1:04 ` Rusty Russell
2014-02-12 1:04 ` Rusty Russell
2014-02-14 4:30 ` [tip:x86/asmlinkage] " tip-bot for Joe Mario
2014-02-20 23:11 ` Rusty Russell
2014-02-21 19:12 ` H. Peter Anvin
2014-02-21 22:37 ` Andi Kleen
2014-02-08 8:01 ` [PATCH 06/17] lto: Disable LTO for sys_ni Andi Kleen
2014-02-14 4:31 ` [tip:x86/asmlinkage] " tip-bot for Andi Kleen
2014-02-08 8:01 ` [PATCH 07/17] Kbuild, lto, workaround: Don't warn for initcall_reference in modpost Andi Kleen
2014-02-14 4:31 ` [tip:x86/asmlinkage] Kbuild, lto, workaround: Don' t " tip-bot for Andi Kleen
2014-02-08 8:01 ` [PATCH 08/17] Kbuild, lto: Drop .number postfixes " Andi Kleen
2014-02-14 4:31 ` [tip:x86/asmlinkage] " tip-bot for Andi Kleen
2014-02-08 8:01 ` [PATCH 09/17] Kbuild, lto: add ld-version and ld-ifversion macros Andi Kleen
2014-02-14 4:31 ` [tip:x86/asmlinkage] " tip-bot for Andi Kleen
2014-02-08 8:01 ` [PATCH 10/17] Kbuild, lto: Add a gcc-ld script to let run gcc as ld Andi Kleen
2014-02-14 4:31 ` [tip:x86/asmlinkage] " tip-bot for Andi Kleen
2014-02-08 8:01 ` [PATCH 11/17] Kbuild, lto: Disable LTO for asm-offsets.c Andi Kleen
2014-02-14 4:32 ` [tip:x86/asmlinkage] " tip-bot for Andi Kleen
2014-02-08 8:01 ` [PATCH 12/17] Kbuild, lto: Set TMPDIR for LTO Andi Kleen
2014-02-14 4:26 ` H. Peter Anvin [this message]
2014-02-14 15:37 ` Andi Kleen
2014-02-08 8:01 ` [PATCH 13/17] Kbuild, lto: Handle basic LTO in modpost Andi Kleen
2014-02-14 4:32 ` [tip:x86/asmlinkage] " tip-bot for Andi Kleen
2014-02-08 8:01 ` [PATCH 14/17] Kbuild, lto: Add Link Time Optimization support Andi Kleen
2014-02-14 4:28 ` H. Peter Anvin
2014-02-14 14:36 ` Andi Kleen
2014-02-14 16:25 ` H. Peter Anvin
2014-02-08 8:01 ` [PATCH 15/17] Kbuild, lto: Add LTO build Documentation Andi Kleen
2014-02-08 8:01 ` [PATCH 16/17] lto: Mark spinlocks noinline when inline spinlocks are disabled Andi Kleen
2014-02-08 8:01 ` [PATCH 17/17] lto, module: Warn about modules that are not fully LTOed Andi Kleen
2014-02-12 1:13 ` Rusty Russell
2014-02-12 1:13 ` Rusty Russell
2014-02-14 4:30 ` [tip:x86/asmlinkage] x86, lto: Disable LTO for the x86 VDSO tip-bot for Andi Kleen
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