Messages in this thread | | | From | Adrian Hunter <> | Subject | [PATCH V2 0/2] perf/x86/intel/pt: Add support for event tracing and TNT disabling | Date | Wed, 26 Jan 2022 12:48:13 +0200 |
| |
Hi
As of Intel SDM (https://www.intel.com/sdm) version 076, there are 2 new Intel PT features called Event Trace and TNT-Disable.
Event Trace exposes details about asynchronous events such as interrupts and VM-Entry/Exit.
TNT-Disable disables TNT packets to reduce the tracing overhead, but with the result that exact control flow information is lost.
Tools patches are being sent in a separate patch set, but can be found here:
https://github.com/ahunter6/linux/tree/event-trace
Changes in V2:
Add my SOB
Alexander Shishkin (2): perf/x86/intel/pt: Add a capability and config bit for event tracing perf/x86/intel/pt: Add a capability and config bit for disabling TNTs
arch/x86/events/intel/pt.c | 16 ++++++++++++++++ arch/x86/include/asm/intel_pt.h | 2 ++ arch/x86/include/asm/msr-index.h | 2 ++ 3 files changed, 20 insertions(+)
Regards Adrian
| |