openkylin
/
linux
mirror of https://gitee.com/openkylin/linux.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

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

This reverts commit 7e0bfad24d.

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>
This commit is contained in:
Ingo Molnar 2009-06-11 00:32:00 +02:00
parent 6ff9a64d2a
commit 511b01bdf6
1 changed files with 1 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
arch/x86/Kconfig.cpu
View File

@ -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.