* [PATCH 13/22] hwmon/coretemp: Support multi-die/package
[not found] <6f53f0e494d743c79e18f6e3a98085711e6ddd0c.1557177585.git.len.brown@intel.com>
@ 2019-05-06 21:26 ` Len Brown
0 siblings, 0 replies; only message in thread
From: Len Brown @ 2019-05-06 21:26 UTC (permalink / raw)
To: x86; +Cc: linux-kernel, Zhang Rui, Len Brown, linux-pm, linux-hwmon
From: Zhang Rui <rui.zhang@intel.com>
Package temperature sensors are actually implemented in hardware per-die.
Update coretemp to be "die-aware", so it can expose mulitple sensors
per package, instead of just one. No change to single-die/package
systems.
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Acked-by: Guenter Roeck <linux@roeck-us.net>
Cc: linux-pm@vger.kernel.org
Cc: linux-hwmon@vger.kernel.org
---
drivers/hwmon/coretemp.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/drivers/hwmon/coretemp.c b/drivers/hwmon/coretemp.c
index 5d34f7271e67..c64ce32d3214 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;
}
@@ -741,7 +741,7 @@ static int __init coretemp_init(void)
if (!x86_match_cpu(coretemp_ids))
return -ENODEV;
- max_packages = topology_max_packages();
+ max_packages = topology_max_packages() * topology_max_die_per_package();
pkg_devices = kcalloc(max_packages, sizeof(struct platform_device *),
GFP_KERNEL);
if (!pkg_devices)
--
2.18.0-rc0
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2019-05-06 21:26 ` [PATCH 13/22] hwmon/coretemp: Support multi-die/package Len Brown
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