diff options
| author | Andi Kleen <ak@linux.intel.com> | 2015-05-10 15:22:43 -0400 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2015-08-04 04:16:57 -0400 |
| commit | 50eab8f6ecd77ae4f9742f8e21ea50705ce0f830 (patch) | |
| tree | 5c3d785ffab604128b48100f75201f6bb7119d45 /tools/perf/scripts/python | |
| parent | 71ef3c6b9d4665ee7afbbe4c208a98917dcfc32f (diff) | |
perf/x86/intel/lbr: Add support for LBRv5
Add support for the new LBRv5 format used on Intel Skylake CPUs.
The flags for mispredict, abort, in_tx etc. moved to range of separate
LBR_INFO_* MSRs. Teach the LBR code to read those. The original
LBR registers stay the same, except they have full sign
extension now.
LBR_INFO also reports a cycle count to the last branch.
Report the cycle information using the new "cycles" branch_info
output field.
In addition we have to context switch and clear the new INFO
MSRs to avoid any information leaks.
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: eranian@google.com
Link: http://lkml.kernel.org/r/1431285767-27027-6-git-send-email-andi@firstfloor.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'tools/perf/scripts/python')
0 files changed, 0 insertions, 0 deletions