linux-kernel - Re: [PATCH -tip -v4] irq_work: generic hard-irq context callbacks

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Date:	Wed, 15 Sep 2010 13:29:50 +0800
From:	Huang Ying <ying.huang@...el.com>
To:	Peter Zijlstra <peterz@...radead.org>
Cc:	Martin Schwidefsky <schwidefsky@...ibm.com>,
	Ingo Molnar <mingo@...e.hu>, "H. Peter Anvin" <hpa@...or.com>,
	paulus <paulus@...ba.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Andi Kleen <andi@...stfloor.org>,
	dhowells <dhowells@...hat.com>,
	Russell King <rmk@....linux.org.uk>,
	Kyle McMartin <kyle@...artin.ca>, davem <davem@...emloft.net>,
	Linux-Arch <linux-arch@...r.kernel.org>
Subject: Re: [PATCH -tip -v4] irq_work: generic hard-irq context callbacks

On Mon, 2010-09-13 at 19:36 +0800, Peter Zijlstra wrote:
> On Mon, 2010-09-13 at 12:32 +0200, Martin Schwidefsky wrote:
> > On Mon, 13 Sep 2010 14:50:48 +0800
> > Huang Ying <ying.huang@...el.com> wrote:
> > 
> > > From:  Peter Zijlstra <a.p.zijlstra@...llo.nl>
> > > 
> > > In order for other NMI context users that want to run things from
> > > hard-IRQ context, extract the perf_event callback mechanism.
> > > 
> > > Huang Ying: some fixes
> > > 
> > > This patch is only tested on x86 platform.
> > > 
> > > 
> > > v4:
> > > 
> > > -rebased on latest -tip tree
> > > 
> > > Signed-off-by: Peter Zijlstra <a.p.zijlstra@...llo.nl>
> > > Signed-off-by: Huang Ying <ying.huang@...el.com>
> > 
> > On s390 I get compile errors:
> > 
> > include/linux/perf_event.h:464:29: error: asm/perf_event.h: No such file or directory
> > 
> > Not a good idea to completely remove the perf_event.h from arch/s390/include/asm.
> > With an empty header file the kernel at least compiles.
> 
> Urgh, Huang, could you at least compile test the other arches?

I uses the cross build tool from:

http://www.kernel.org/pub/tools/crosstool/

But I get compile errors on s390 and alpha even for tip/master
(ce0c65112d37ff04016b4e0962a406281640739b). The build logs are attached.

Do I use the wrong git tree? Or we should fix tip/master firstly?

And frv and sh have compile error even for linus/master and 2.6.35. So I
can not compile test for these arches.

Do I use the wrong cross tool?

The kernel configuration is generated as follow:

make defconfig
./scripts/config --enable perf_events

Best Regards,
Huang Ying


View attachment "log_alpha" of type "text/plain" (37492 bytes)

View attachment "log_s390" of type "text/plain" (69683 bytes)