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Subject: Re: [sparc build bug] Re: [tip:perf/core] irq: Add tracepoint to
 softirq_raise
From: Peter Zijlstra <peterz@infradead.org>
To: Ingo Molnar <mingo@elte.hu>
Cc: Ingo Molnar <mingo@elte.hu>, mathieu.desnoyers@efficios.com,
        sanagi.koki@jp.fujitsu.com, fweisbec@gmail.com, rostedt@goodmis.org,
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        Heiko Carstens <heiko.carstens@de.ibm.com>,
        "Luck, Tony" <tony.luck@intel.com>
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Date: Mon, 18 Oct 2010 12:48:56 +0200
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On Mon, 2010-10-18 at 11:44 +0200, Peter Zijlstra wrote:
> On Wed, 2010-09-08 at 13:25 +0200, Ingo Molnar wrote:
> > * tip-bot for Lai Jiangshan <laijs@cn.fujitsu.com> wrote:
> > 
> > > Commit-ID:  2bf2160d8805de64308e2e7c3cd97813cb58ed2f
> > > Gitweb:     http://git.kernel.org/tip/2bf2160d8805de64308e2e7c3cd97813cb58ed2f
> > > Author:     Lai Jiangshan <laijs@cn.fujitsu.com>
> > > AuthorDate: Mon, 23 Aug 2010 18:42:48 +0900
> > > Committer:  Frederic Weisbecker <fweisbec@gmail.com>
> > > CommitDate: Tue, 7 Sep 2010 17:49:34 +0200
> > > 
> > > irq: Add tracepoint to softirq_raise
> > > 
> > > Add a tracepoint for tracing when softirq action is raised.
> > > 
> > > This and the existing tracepoints complete softirq's tracepoints:
> > > softirq_raise, softirq_entry and softirq_exit.
> > > 
> > > And when this tracepoint is used in combination with
> > > the softirq_entry tracepoint we can determine
> > > the softirq raise latency.
> > > 

> > In file included from /home/mingo/tip/arch/sparc/include/asm/irq_32.h:11,
> >                  from /home/mingo/tip/arch/sparc/include/asm/irq.h:6,
> >                  from /home/mingo/tip/include/linux/irqnr.h:10,
> >                  from /home/mingo/tip/include/linux/irq.h:22,
> >                  from /home/mingo/tip/include/asm-generic/hardirq.h:6,
> >                  from /home/mingo/tip/arch/sparc/include/asm/hardirq_32.h:11,
> >                  from /home/mingo/tip/arch/sparc/include/asm/hardirq.h:6,
> >                  from /home/mingo/tip/include/linux/hardirq.h:10,
> >                  from /home/mingo/tip/include/linux/ftrace_event.h:7,
> >                  from /home/mingo/tip/include/trace/syscall.h:6,
> >                  from /home/mingo/tip/include/linux/syscalls.h:76,
> >                  from /home/mingo/tip/init/initramfs.c:9:
> > /home/mingo/tip/include/linux/interrupt.h: In function '__raise_softirq_irqoff':
> > /home/mingo/tip/include/linux/interrupt.h:414: error: implicit declaration of function 'local_softirq_pending'
> > /home/mingo/tip/include/linux/interrupt.h:414: error: lvalue required as left operand of assignment
> > make[2]: *** [init/initramfs.o] Error 1
> > make[2]: *** Waiting for unfinished jobs....
> > In file included from /home/mingo/tip/arch/sparc/include/asm/irq_32.h:11,
> 
> I could build sparc64_defconfig, but s390 is broken for me by this...

/me being very grumpy @ Lai.. ia64 is broken too!

/me goes revert this shite