Commit 511b01bd authored Jun 11, 2009 by Ingo Molnar

Revert "x86, bts: reenable ptrace branch trace support"

This reverts commit 7e0bfad2.

A late objection to the ABI has arrived:

   http://lkml.org/lkml/2009/6/10/253



Keep the ABI disabled out of caution, to not create premature
user-space expectations.

While the hw-branch-tracing variant uses and tests the BTS code.

Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Markus Metzger <markus.t.metzger@intel.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

parent 6ff9a64d

arch/x86/Kconfig.cpu

+1 −0

Original line number	Diff line number	Diff line
		@@ -506,6 +506,7 @@ 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.