x86, bts: add selftest for BTS

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Perform a selftest of branch trace store when a cpu is initialized.

WARN and disable branch trace store support if the selftest fails.

Signed-off-by: Markus Metzger <markus.t.metzger@intel.com>
LKML-Reference: <20090313104507.A30125@sedona.ch.intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

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Markus Metzger 2009-03-13 10:45:07 +01:00 • committed by Ingo Molnar

parent bc44fb5f7d

commit 8a327f6d1b

5 changed files with 287 additions and 0 deletions

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9

arch/x86/Kconfig.debug

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1

arch/x86/kernel/Makefile

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21

arch/x86/kernel/ds.c

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241

arch/x86/kernel/ds_selftest.c

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15

arch/x86/kernel/ds_selftest.h

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