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

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