linux-kernel - RE: [patch] removes MAX_ARG

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Message-ID: <617E1C2C70743745A92448908E030B2A018B17DE@scsmsx411.amr.corp.intel.com>
Date:	Fri, 25 May 2007 11:48:09 -0700
From:	"Luck, Tony" <tony.luck@...el.com>
To:	"Peter Zijlstra" <a.p.zijlstra@...llo.nl>
Cc:	"Ollie Wild" <aaw@...gle.com>, <linux-kernel@...r.kernel.org>,
	<parisc-linux@...ts.parisc-linux.org>, <linux-mm@...ck.org>,
	<linux-arch@...r.kernel.org>, "Andrew Morton" <akpm@...l.org>,
	"Ingo Molnar" <mingo@...e.hu>, "Andi Kleen" <ak@...e.de>
Subject: RE: [patch] removes MAX_ARG_PAGES

> I just tried this on an Altix from the test lab, and ia32 bash just
> started.

I don't have any native x86 binaries on my Madison-based testbox, so my
test case was to compile a simple program that counted total length of
argument strings on an x86 box, and copy it to my ia64 box.  So that I
wouldn't have to copy over a bunch of libraries too, I compiled it
with -static.  This is the test case that "hung" my system (re-running
it today from /dev/tty1 instead of from an xterm, I see that it actually
oopsed in rb_next()).  I wasn't even running with a long arglist.  Just
"*" for my home directory (19 files/directories = ~170 bytes).

-Tony

My test program.  Compile on ia32 box with "cc -static -o args args.c"

---- begin args.c ----
main(int argc, char **argv)
{
	int n;

	printf("argc = %d\n", argc);

	n = 0;
	while (--argc)
		n += strlen(*++argv);

	printf("bytes = %d\n", n);
}
-
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