linux-kernel - Re: AW: AW: clock_nanosleep: cyclic POSIX thread freezes during time setting

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Message-ID: <alpine.LFD.2.00.0910061201210.2646@localhost.localdomain>
Date:	Tue, 6 Oct 2009 12:04:54 +0200 (CEST)
From:	Thomas Gleixner <tglx@...utronix.de>
To:	"Mehlan, Markus" <Markus.Mehlan@...ter.info>
cc:	linux-kernel@...r.kernel.org
Subject: Re: AW: AW: clock_nanosleep: cyclic POSIX thread freezes during time
 setting

On Tue, 6 Oct 2009, Mehlan, Markus wrote:
> #
> # Kernel hacking
> #
> # CONFIG_PRINTK_TIME is not set
> CONFIG_ENABLE_WARN_DEPRECATED=y
> CONFIG_ENABLE_MUST_CHECK=y
> CONFIG_FRAME_WARN=1024
> CONFIG_MAGIC_SYSRQ=y
> # CONFIG_UNUSED_SYMBOLS is not set
> CONFIG_DEBUG_FS=y
> # CONFIG_HEADERS_CHECK is not set
> # CONFIG_DEBUG_KERNEL is not set
> CONFIG_RTMUTEX_CHECK=y
> # CONFIG_DEBUG_BUGVERBOSE is not set
> CONFIG_HAVE_FTRACE=y
> CONFIG_HAVE_DYNAMIC_FTRACE=y
> # CONFIG_EVENT_TRACER is not set
> # CONFIG_WAKEUP_LATENCY_HIST is not set
> # CONFIG_SAMPLES is not set
> # CONFIG_IRQSTACKS is not set
> # CONFIG_VIRQ_DEBUG is not set
> # CONFIG_BOOTX_TEXT is not set
> # CONFIG_PPC_EARLY_DEBUG is not set

CONFIG_FTRACE=y is missing.

I don't remember whether the older -rt kernels had ftrace support for
powerpc. 

Can you verify whether later -rt versions (29-rt or 31-rt) have the
same problem ?

Thanks,

	tglx
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