x86, bts: reenable ptrace branch trace support
Markus Metzger [Fri, 24 Apr 2009 07:44:48 +0000 (09:44 +0200)]
The races found by Oleg Nesterov have been fixed.

Reenable branch trace support.

Signed-off-by: Markus Metzger <markus.t.metzger@intel.com>
Acked-by: Oleg Nesterov <oleg@redhat.com>
LKML-Reference: <20090424094448.A30216@sedona.ch.intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

arch/x86/Kconfig.cpu

index 8130334..924e156 100644 (file)
@@ -506,7 +506,6 @@ config X86_PTRACE_BTS
        bool "Branch Trace Store"
        default y
        depends on X86_DEBUGCTLMSR
-       depends on BROKEN
        ---help---
          This adds a ptrace interface to the hardware's branch trace store.