From: Adrian Hunter <adrian.hunter@intel.com>
To: Peter Zijlstra <peterz@infradead.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>,
Andi Kleen <ak@linux.intel.com>,
Arnaldo Carvalho de Melo <acme@kernel.org>,
Jiri Olsa <jolsa@redhat.com>,
linux-kernel@vger.kernel.org, Ingo Molnar <mingo@redhat.com>,
Borislav Petkov <bp@alien8.de>,
Dave Hansen <dave.hansen@linux.intel.com>,
x86@kernel.org, H Peter Anvin <hpa@zytor.com>
Subject: Re: [PATCH V2 0/2] perf/x86/intel/pt: Add support for event tracing and TNT disabling
Date: Tue, 8 Feb 2022 08:28:48 +0200 [thread overview]
Message-ID: <dc5342b7-97d4-23c0-a093-1ba2dfec5ee7@intel.com> (raw)
In-Reply-To: <20220126104815.2807416-1-adrian.hunter@intel.com>
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
>
next prev parent reply other threads:[~2022-02-08 6:28 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-01-26 10:48 [PATCH V2 0/2] perf/x86/intel/pt: Add support for event tracing and TNT disabling Adrian Hunter
2022-01-26 10:48 ` [PATCH V2 1/2] perf/x86/intel/pt: Add a capability and config bit for event tracing Adrian Hunter
2022-02-16 14:57 ` [tip: perf/core] " tip-bot2 for Alexander Shishkin
2022-01-26 10:48 ` [PATCH V2 2/2] perf/x86/intel/pt: Add a capability and config bit for disabling TNTs Adrian Hunter
2022-02-16 14:57 ` [tip: perf/core] " tip-bot2 for Alexander Shishkin
2022-02-08 6:28 ` Adrian Hunter [this message]
2022-02-15 14:18 ` [PATCH V2 0/2] perf/x86/intel/pt: Add support for event tracing and TNT disabling Adrian Hunter
2022-02-15 15:35 ` Peter Zijlstra
2022-02-15 15:40 ` Adrian Hunter
2022-02-15 15:51 ` Peter Zijlstra
2022-02-15 15:41 ` Peter Zijlstra
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