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[69.131.112.51]) by smtp.gmail.com with ESMTPSA id s7sm9799349ioo.17.2019.04.30.13.56.28 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 30 Apr 2019 13:56:29 -0700 (PDT) From: Len Brown To: x86@kernel.org Cc: linux-kernel@vger.kernel.org, Zhang Rui , Len Brown , linux-pm@vger.kernel.org, linux-hwmon@vger.kernel.org Subject: [PATCH 12/14] hwmon/coretemp: Support multi-die/package Date: Tue, 30 Apr 2019 16:55:57 -0400 Message-Id: X-Mailer: git-send-email 2.18.0-rc0 In-Reply-To: <75386dff62ee869eb7357dff1e60dfd9b3e68023.1553624867.git.len.brown@intel.com> References: <75386dff62ee869eb7357dff1e60dfd9b3e68023.1553624867.git.len.brown@intel.com> Reply-To: Len Brown Organization: Intel Open Source Technology Center Sender: linux-hwmon-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-hwmon@vger.kernel.org From: Zhang Rui This patch introduces coretemp driver support for new dual-die/package systems. On the new dual-die/package systems, the package temperature MSRs becomes die-scope. Thus instead of one hwmon device per physical package, now there should be one hwmon device for each die on these systems. On the hardwares that do not have multi-die support, topology_logical_die_id() equals topology_physical_package_id(), thus the only difference is that physical package id is used as the coretemp platform device id, instead of logical package id on these systems. Signed-off-by: Zhang Rui Signed-off-by: Len Brown Acked-by: Guenter Roeck Cc: linux-pm@vger.kernel.org Cc: linux-hwmon@vger.kernel.org --- drivers/hwmon/coretemp.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) diff --git a/drivers/hwmon/coretemp.c b/drivers/hwmon/coretemp.c index 5d34f7271e67..57f348d43819 100644 --- a/drivers/hwmon/coretemp.c +++ b/drivers/hwmon/coretemp.c @@ -435,7 +435,7 @@ static int chk_ucode_version(unsigned int cpu) static struct platform_device *coretemp_get_pdev(unsigned int cpu) { - int pkgid = topology_logical_package_id(cpu); + int pkgid = topology_logical_die_id(cpu); if (pkgid >= 0 && pkgid < max_packages) return pkg_devices[pkgid]; @@ -579,7 +579,7 @@ static struct platform_driver coretemp_driver = { static struct platform_device *coretemp_device_add(unsigned int cpu) { - int err, pkgid = topology_logical_package_id(cpu); + int err, pkgid = topology_logical_die_id(cpu); struct platform_device *pdev; if (pkgid < 0) @@ -703,7 +703,7 @@ static int coretemp_cpu_offline(unsigned int cpu) * the rest. */ if (cpumask_empty(&pd->cpumask)) { - pkg_devices[topology_logical_package_id(cpu)] = NULL; + pkg_devices[topology_logical_die_id(cpu)] = NULL; platform_device_unregister(pdev); return 0; } @@ -732,6 +732,7 @@ static enum cpuhp_state coretemp_hp_online; static int __init coretemp_init(void) { int err; + struct cpuinfo_x86 *c = &cpu_data(0); /* * CPUID.06H.EAX[0] indicates whether the CPU has thermal @@ -741,7 +742,7 @@ static int __init coretemp_init(void) if (!x86_match_cpu(coretemp_ids)) return -ENODEV; - max_packages = topology_max_packages(); + max_packages = topology_max_packages() * c->x86_max_dies; pkg_devices = kcalloc(max_packages, sizeof(struct platform_device *), GFP_KERNEL); if (!pkg_devices) -- 2.18.0-rc0