Messages in this thread Patch in this message | | | From | Andreas Schwab <> | Subject | Re: Random crashes with 2.6.27-rc3 on PPC | Date | Sun, 24 Aug 2008 16:46:38 +0200 |
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Michael Buesch <mb@bu3sch.de> writes:
> The following workaround seems to fix the crashes on powerpc. > However, this patch is clearly not what we want for other architectures, > as they might need -fno-omit-frame-pointer to function properly.
This has a better chance to be accepted. :-)
diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug index 8b5a7d3..f9a2e48 100644 --- a/lib/Kconfig.debug +++ b/lib/Kconfig.debug @@ -394,7 +394,7 @@ config LOCKDEP bool depends on DEBUG_KERNEL && TRACE_IRQFLAGS_SUPPORT && STACKTRACE_SUPPORT && LOCKDEP_SUPPORT select STACKTRACE - select FRAME_POINTER if !X86 && !MIPS + select FRAME_POINTER if !X86 && !MIPS && !PPC select KALLSYMS select KALLSYMS_ALL > Index: linux-2.6/kernel/Makefile > =================================================================== > --- linux-2.6.orig/kernel/Makefile 2008-08-24 11:50:23.000000000 +0200 > +++ linux-2.6/kernel/Makefile 2008-08-24 12:15:54.000000000 +0200 > @@ -92,13 +92,13 @@ obj-$(CONFIG_SMP) += sched_cpupri.o > ifneq ($(CONFIG_SCHED_NO_NO_OMIT_FRAME_POINTER),y) > # According to Alan Modra <alan@linuxcare.com.au>, the -fno-omit-frame-pointer is > # needed for x86 only. Why this used to be enabled for all architectures is beyond > # me. I suspect most platforms don't need this, but until we know that for sure > # I turn this off for IA-64 only. Andreas Schwab says it's also needed on m68k > # to get a correct value for the wait-channel (WCHAN in ps). --davidm > -CFLAGS_sched.o := $(PROFILING) -fno-omit-frame-pointer > +CFLAGS_sched.o := $(PROFILING)
CONFIG_SCHED_NO_NO_OMIT_FRAME_POINTER is already enabled on powerpc.
Andreas.
-- Andreas Schwab, SuSE Labs, schwab@suse.de SuSE Linux Products GmbH, Maxfeldstraße 5, 90409 Nürnberg, Germany PGP key fingerprint = 58CA 54C7 6D53 942B 1756 01D3 44D5 214B 8276 4ED5 "And now for something completely different." -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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