Received-SPF: pass (google.com: domain of linux-kernel+bounces-207989-linux.lists.archive=gmail.com@vger.kernel.org designates 2604:1380:45e3:2400::1 as permitted sender) client-ip=2604:1380:45e3:2400::1;
Received-SPF: Pass (protection.outlook.com: domain of amd.com designates
 165.204.84.17 as permitted sender) receiver=protection.outlook.com;
 client-ip=165.204.84.17; helo=SATLEXMB04.amd.com; pr=C
From: Dhananjay Ugwekar <Dhananjay.Ugwekar@amd.com>
To: <peterz@infradead.org>, <mingo@redhat.com>, <acme@kernel.org>,
	<namhyung@kernel.org>, <mark.rutland@arm.com>,
	<alexander.shishkin@linux.intel.com>, <jolsa@kernel.org>,
	<irogers@google.com>, <adrian.hunter@intel.com>, <kan.liang@linux.intel.com>,
	<tglx@linutronix.de>, <bp@alien8.de>, <dave.hansen@linux.intel.com>,
	<x86@kernel.org>, <kees@kernel.org>, <gustavoars@kernel.org>
CC: <linux-perf-users@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
	<linux-hardening@vger.kernel.org>, <ananth.narayan@amd.com>,
	<gautham.shenoy@amd.com>, <kprateek.nayak@amd.com>, <ravi.bangoria@amd.com>,
	<sandipan.das@amd.com>, <linux-pm@vger.kernel.org>, Dhananjay Ugwekar
	<Dhananjay.Ugwekar@amd.com>
Subject: [PATCH 0/6] Add per-core RAPL energy counter support for AMD CPUs
Date: Mon, 10 Jun 2024 10:07:45 +0000
Message-ID: <20240610100751.4855-1-Dhananjay.Ugwekar@amd.com>
Precedence: bulk
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Content-Type: text/plain
X-MS-Exchange-CrossTenant-OriginalArrivalTime: 10 Jun 2024 10:08:27.3060
 (UTC)
X-MS-Exchange-CrossTenant-Network-Message-Id: 4a282dbc-64c3-42a4-0254-08dc893545a0
X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d
X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d;Ip=[165.204.84.17];Helo=[SATLEXMB04.amd.com]
X-MS-Exchange-CrossTenant-AuthSource:
	CY4PEPF0000E9DB.namprd05.prod.outlook.com
X-MS-Exchange-CrossTenant-AuthAs: Anonymous
X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem
X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM4PR12MB8559

Currently the energy-cores event in the power PMU aggregates energy
consumption data at a package level. On the other hand the core energy
RAPL counter in AMD CPUs has a core scope (which means the energy 
consumption is recorded separately for each core). Earlier efforts to add
the core event in the power PMU had failed [1], due to the difference in 
the scope of these two events. Hence, there is a need for a new core scope
PMU.

This patchset adds a new "power_per_core" PMU alongside the existing
"power" PMU, which will be responsible for collecting the new
"energy-per-core" event.

Tested the package level and core level PMU counters with workloads
pinned to different CPUs.

Results with workload pinned to CPU 1 in Core 1 on an AMD Zen4 Genoa 
machine:

$ perf stat -a --per-core -e power_per_core/energy-per-core/ sleep 1

 Performance counter stats for 'system wide':

S0-D0-C0         1          0.02 Joules power_per_core/energy-per-core/
S0-D0-C1         1          5.72 Joules power_per_core/energy-per-core/
S0-D0-C2         1          0.02 Joules power_per_core/energy-per-core/
S0-D0-C3         1          0.02 Joules power_per_core/energy-per-core/
S0-D0-C4         1          0.02 Joules power_per_core/energy-per-core/
S0-D0-C5         1          0.02 Joules power_per_core/energy-per-core/
S0-D0-C6         1          0.02 Joules power_per_core/energy-per-core/
S0-D0-C7         1          0.02 Joules power_per_core/energy-per-core/
S0-D0-C8         1          0.02 Joules power_per_core/energy-per-core/
S0-D0-C9         1          0.02 Joules power_per_core/energy-per-core/
S0-D0-C10        1          0.02 Joules power_per_core/energy-per-core/

[1]: https://lore.kernel.org/lkml/3e766f0e-37d4-0f82-3868-31b14228868d@linux.intel.com/

This patchset applies cleanly on top of v6.10-rc3 as well as latest 
tip/master.

Dhananjay Ugwekar (6):
  perf/x86/rapl: Fix the energy-pkg event for AMD CPUs
  perf/x86/rapl: Rename rapl_pmu variables
  perf/x86/rapl: Make rapl_model struct global
  perf/x86/rapl: Move cpumask variable to rapl_pmus struct
  perf/x86/rapl: Add wrapper for online/offline functions
  perf/x86/rapl: Add per-core energy counter support for AMD CPUs

 arch/x86/events/rapl.c | 311 ++++++++++++++++++++++++++++++-----------
 1 file changed, 233 insertions(+), 78 deletions(-)

-- 
2.34.1