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: [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 [thread overview]
Message-ID: <20220126104815.2807416-1-adrian.hunter@intel.com> (raw)
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
next reply other threads:[~2022-01-26 10:48 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-01-26 10:48 Adrian Hunter [this message]
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 ` [PATCH V2 0/2] perf/x86/intel/pt: Add support for event tracing and TNT disabling Adrian Hunter
2022-02-15 14:18 ` 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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