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From: "Abhishek Sagar" <sagar.abhishek@gmail•com>
To: Ingo Molnar <mingo@elte•hu>
Cc: David Miller <davem@davemloft•net>,
	Alexander Beregalov <a.beregalov@gmail•com>,
	Linux Kernel Mailing List <linux-kernel@vger•kernel.org>,
	linux-next@vger•kernel.org, sparclinux@vger•kernel.org,
	rostedt@goodmis•org
Subject: Re: next-0630: sparc64: build failed
Date: Wed, 2 Jul 2008 09:52:59 +0530	[thread overview]
Message-ID: <863e9df20807012122u45f7d8dfmc4d11513b19aeadc@mail.gmail.com> (raw)
In-Reply-To: <20080701200344.GA4896@elte.hu>

On Wed, Jul 2, 2008 at 1:33 AM, Ingo Molnar <mingo@elte•hu> wrote:
> hm, mcount is the facility - so it makes sense to have that defined.
> Here you basically hide CONFIG_MCOUNT:
>
>> -ifeq ($(CONFIG_MCOUNT),y)
>> -  KBUILD_CFLAGS += -pg
>> +ifneq ($(CONFIG_FTRACE),y)
>> +ifeq ($(CONFIG_STACK_DEBUG),y)
>> +KBUILD_CFLAGS += -pg
>> +endif
>>  endif

Even with CONFIG_MCOUNT we'd have to do something like this to prevent
duplicate -pg flags (I hope there's a prettier way of writing this):

ifneq ($(CONFIG_FTRACE),y)
ifeq ($(CONFIG_MCOUNT),y)
KBUILD_CFLAGS += -pg
endif
endif

> via two conditions. I'm not sure that's a win and i found CONFIG_MCOUNT
> a logical switch - but it's David's call.

Ok, but it really doesn't allow end user to switch between anything
through any menu. It gets selected via:

config MCOUNT
        bool
        depends on STACK_DEBUG || FTRACE
        default y


I was attempting to decouple MCOUNT and STACK_DEBUG, which
incidentally made MCOUNT useless.

--
Regards,
Abhishek Sagar

  reply	other threads:[~2008-07-02  4:22 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-07-01 15:25 next-0630: sparc64: build failed Alexander Beregalov
2008-07-01 15:46 ` Ingo Molnar
2008-07-01 18:48   ` Abhishek Sagar
2008-07-01 20:03     ` Ingo Molnar
2008-07-02  4:22       ` Abhishek Sagar [this message]
2008-07-02  9:10   ` Alexander Beregalov

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