linux-kernel - [PATCH 0/2] RAPL driver fixes for AMD CPUs

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-ID: <20240719092545.50441-1-Dhananjay.Ugwekar@amd.com>
Date: Fri, 19 Jul 2024 09:25:44 +0000
From: Dhananjay Ugwekar <Dhananjay.Ugwekar@....com>
To: <peterz@...radead.org>, <mingo@...hat.com>, <acme@...nel.org>,
	<namhyung@...nel.org>, <mark.rutland@....com>,
	<alexander.shishkin@...ux.intel.com>, <jolsa@...nel.org>,
	<irogers@...gle.com>, <adrian.hunter@...el.com>, <kan.liang@...ux.intel.com>,
	<tglx@...utronix.de>, <bp@...en8.de>, <dave.hansen@...ux.intel.com>,
	<x86@...nel.org>, <rui.zhang@...el.com>
CC: <linux-perf-users@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
	<linux-pm@...r.kernel.org>, <ananth.narayan@....com>,
	<gautham.shenoy@....com>, <kprateek.nayak@....com>, <ravi.bangoria@....com>,
	<sandipan.das@....com>, <Dhananjay.Ugwekar@....com>
Subject: [PATCH 0/2] RAPL driver fixes for AMD CPUs

After commit ("x86/cpu/topology: Add support for the AMD 0x80000026 leaf"),
AMD CPUs with 0x80000026 leaf have become CCD(Core Complex Die)-aware and 
this CCD info is reported by the _die_ macros, which earlier used to return 
package info.

e.g: Earlier topology_logical_die_id() and topology_logical_package_id()
used to return the same value for all the CPUs even on a multi-die/multi-CCD
system. But after the above mentioned commit, topology_logical_die_id() 
returns the CCD id and topology_logical_package_id() returns the 
package/socket id.

Hence, the RAPL energy-pkg event which uses _die_ macros has to be
fixed, in light of above change.

Dhananjay Ugwekar (2):
  perf/x86/rapl: Fix the energy-pkg event for AMD CPUs
  powercap/intel_rapl: Fix the energy-pkg event for AMD CPUs

 arch/x86/events/rapl.c               | 44 ++++++++++++++++++++++++----
 drivers/powercap/intel_rapl_common.c | 20 +++++++++++--
 2 files changed, 56 insertions(+), 8 deletions(-)

-- 
2.34.1