perf/x86/intel/pt: Add a capability and config bit for event tracing

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As of Intel SDM (https://www.intel.com/sdm) version 076, there is a new
Intel PT feature called Event Trace which is enabled config bit 31.

Event Trace exposes details about asynchronous events such as interrupts
and VM-Entry/Exit.

Add a capability and config bit for Event Trace.

Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Adrian Hunter <adrian.hunter@intel.com>
Link: https://lore.kernel.org/r/20220126104815.2807416-2-adrian.hunter@intel.com

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This commit is contained in:

Alexander Shishkin 2022-01-26 12:48:14 +02:00 • committed by Peter Zijlstra

parent ee28855a54

commit 28c24ded64

3 changed files with 10 additions and 0 deletions

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8

arch/x86/events/intel/pt.c

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1

arch/x86/include/asm/intel_pt.h

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1

arch/x86/include/asm/msr-index.h

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