Re: [PATCH V2 0/2] perf/x86/intel/pt: Add support for event tracing and TNT disabling

[Adrian Hunter]

On 26/01/2022 12:48, Adrian Hunter wrote:
> 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

Ping


> 
> 
> 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 
>