linux-kernel - [PATCH 0/3] perf/x86/rapl: Enable RAPL for AMD Fam17h

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Message-Id: <20200515215733.20647-1-eranian@google.com>
Date:   Fri, 15 May 2020 14:57:30 -0700
From:   Stephane Eranian <eranian@...gle.com>
To:     linux-kernel@...r.kernel.org
Cc:     peterz@...radead.org, mingo@...e.hu, irogers@...gle.com,
        kim.phillips@....com, jolsa@...hat.com
Subject: [PATCH 0/3] perf/x86/rapl: Enable RAPL for AMD Fam17h

This patch series adds support for AMD Fam17h RAPL counters. As per
AMD PPR, Fam17h support Package RAPL counters to monitor power usage.
The RAPL counter operates as with Intel RAPL. As such, it is beneficial
to share the code.

The series first moves the rapl.c file to common perf_events x86 and then
adds the support.
>From the user's point of view, the interface is identical with
/sys/devices/power. The energy-pkg event is the only one supported.

$ perf stat -a --per-socket -I 1000 -e power/energy-pkg/

Signed-off-by: Stephane Eranian <eranian@...gle.com>

Stephane Eranian (3):
  perf/x86/rapl: move RAPL support to common x86 code
  perf/x86/rapl: refactor code for Intel/AMD sharing
  perf/x86/rapl: add AMD Fam17h RAPL support

 arch/x86/events/Kconfig            |  8 ++---
 arch/x86/events/Makefile           |  1 +
 arch/x86/events/intel/Makefile     |  2 --
 arch/x86/events/probe.c            |  4 +++
 arch/x86/events/{intel => }/rapl.c | 55 +++++++++++++++++++++++++-----
 arch/x86/include/asm/msr-index.h   |  3 ++
 6 files changed, 58 insertions(+), 15 deletions(-)
 rename arch/x86/events/{intel => }/rapl.c (92%)

-- 
2.26.2.761.g0e0b3e54be-goog