x86, bts: add selftest for BTS

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>

1 files changed, 1 insertions, 0 deletions

diff --git a/arch/x86/kernel/Makefile b/arch/x86/kernel/Makefile
index 339ce35648e6..a0c9e138b008 100644
--- a/arch/x86/kernel/Makefile
+++ b/arch/x86/kernel/Makefile
@@ -44,6 +44,7 @@ obj-y				+= process.o
 obj-y                           += i387.o xsave.o
 obj-y                           += ptrace.o
 obj-$(CONFIG_X86_DS)            += ds.o
+obj-$(CONFIG_X86_DS_SELFTEST)           += ds_selftest.o
 obj-$(CONFIG_X86_32)            += tls.o
 obj-$(CONFIG_IA32_EMULATION)    += tls.o
 obj-y                           += step.o