Re: [PATCH] perf: Add util/include/linux/config.h for including generatedautoconf.h of kernel

From: Hitoshi Mitake
Date: Sat Jan 30 2010 - 06:51:26 EST

(2010å01æ29æ 07:27), Paul Mackerras wrote:
On Thu, Jan 28, 2010 at 11:28:48PM +0900, Hitoshi Mitake wrote:

I'd like to add util/include/linux/config.h,
this header file includes autoconf.h which is generated
by build phase of kernel.

This makes building of perf depend on building of kernel.
It's a little dirty. But perf has tight relation
of its kernel, so I don't think that it is a serious problem.

My original purpose of making this patch is
knowing size of void *.
If config.h is available,
CONFIG_ARCH_PHYS_ADDR_T_64BIT will be provided for source of perf,
we can know size of void * by this config.

How do you think?
How will this work if I built the kernel in a separate object
directory (e.g., using "make O=../builddir vmlinux")? I think that
trying to include generated files will fail in that case.

In general I think that tying perf to the kernel config is a bad idea.


Ah, sorry, I've forgot about the case of
separated build directory.

And I found the way to use memcpy() and sent patch series.
I sent the patch series, based on the memcpy() way.


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