Messages in this thread | | | Date | Mon, 15 Feb 2010 21:21:17 +0300 | From | Cyrill Gorcunov <> | Subject | Re: [PATCH 1/4] nmi_watchdog: use a boolean config flag for compiling |
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On Mon, Feb 15, 2010 at 09:13:01PM +0300, Cyrill Gorcunov wrote: ... > > Looking through the code, is there ever case where 'apic' is undefined? > > The arch_trigger_all_cpu_backtrace should match identically to the old nmi > > code, so I am stuck on how to fix this. > > > > Thoughts? > > > > It looks familiar to one problem with HW breakpoints "Kconfig select" > issue Frederic fixed once not that long ago, if I recall correctly. > > So due to select we choose to compile hw_nmi.c, but CONFIG_LOCAL_APIC > (or APIC on UP) is turned off. So apic.c is not compiled. And at stage > of linking we get unresolved symbol. > > I don't remember the details how Frederic fixed HW breakpoints "select" > issue, CC'ed :) But you may google to find it out. >
Here is what I mean http://patchwork.kernel.org/patch/67973/
-- Cyrill
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