kernel/linux.git/drivers/hwmon/coretemp.c, branch v4.8.16

hwmon: (coretemp) Increase limit of maximum core ID from 32 to 128.

2015-10-14T14:57:14+00:00

A new limit selected arbitrarily as power of two greater than required minimum for Xeon Phi processor (72 for Knights Landing). Currently driver is not able to handle cores with core ID greater than 32. Such attempt ends up with the following error in dmesg: coretemp coretemp.0: Adding Core XXX failed Signed-off-by: Lukasz Odzioba Signed-off-by: Guenter Roeck

coretemp: Replace cpu_sibling_mask() with topology_sibling_cpumask()

2015-05-27T13:22:15+00:00

The former duplicates the functionality of the latter but is neither documented nor arch-independent. Signed-off-by: Bartosz Golaszewski Acked-by: Guenter Roeck Cc: Benoit Cousson Cc: Catalin Marinas Cc: Fenghua Yu Cc: Jean Delvare Cc: Jonathan Corbet Cc: Linus Torvalds Cc: Oleg Drokin Cc: Peter Zijlstra Cc: Rafael J. Wysocki Cc: Russell King Cc: Thomas Gleixner Cc: Viresh Kumar Link: http://lkml.kernel.org/r/1432645896-12588-4-git-send-email-bgolaszewski@baylibre.com Signed-off-by: Ingo Molnar

hwmon: (coretemp) Allow format checking

2015-03-09T16:59:35+00:00

By extracting the only part that differs we can allow static checking of the format string, and possibly save a little .rodata. Signed-off-by: Rasmus Villemoes [Guenter Roeck: continuation line alignment] Signed-off-by: Guenter Roeck

hwmon: drop owner assignment from platform_drivers

2014-10-20T14:20:36+00:00

A platform_driver does not need to set an owner, it will be populated by the driver core. Signed-off-by: Wolfram Sang

Revert "hwmon: (coretemp) Refine TjMax detection"

2014-05-01T11:07:52+00:00

This reverts commit 9fb6c9c73b11bef65ba80a362547fd116c1e1c9d. Tjmax on some Intel CPUs is below 85 degrees C. One known example is L5630 with Tjmax of 71 degrees C. There are other Xeon processors with Tjmax of 70 or 80 degrees C. Also, the Intel IA32 System Programming document states that the temperature target is in bits 23:16 of MSR 0x1a2 (MSR_TEMPERATURE_TARGET), which is 8 bits, not 7. So even if turbostat uses similar checks to validate Tjmax, there is no evidence that the checks are actually required. On the contrary, the checks are known to cause problems and therefore need to be removed. This fixes https://bugzilla.kernel.org/show_bug.cgi?id=75071. Fixes: 9fb6c9c hwmon: (coretemp) Refine TjMax detection Reviewed-by: Jean Delvare Cc: stable@vger.kernel.org # 3.14+ Signed-off-by: Guenter Roeck

Merge tag 'cpu-hotplug-3.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

2014-04-07T21:55:46+00:00

Pull CPU hotplug notifiers registration fixes from Rafael Wysocki: "The purpose of this single series of commits from Srivatsa S Bhat (with a small piece from Gautham R Shenoy) touching multiple subsystems that use CPU hotplug notifiers is to provide a way to register them that will not lead to deadlocks with CPU online/offline operations as described in the changelog of commit 93ae4f978ca7f ("CPU hotplug: Provide lockless versions of callback registration functions"). The first three commits in the series introduce the API and document it and the rest simply goes through the users of CPU hotplug notifiers and converts them to using the new method" * tag 'cpu-hotplug-3.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (52 commits) net/iucv/iucv.c: Fix CPU hotplug callback registration net/core/flow.c: Fix CPU hotplug callback registration mm, zswap: Fix CPU hotplug callback registration mm, vmstat: Fix CPU hotplug callback registration profile: Fix CPU hotplug callback registration trace, ring-buffer: Fix CPU hotplug callback registration xen, balloon: Fix CPU hotplug callback registration hwmon, via-cputemp: Fix CPU hotplug callback registration hwmon, coretemp: Fix CPU hotplug callback registration thermal, x86-pkg-temp: Fix CPU hotplug callback registration octeon, watchdog: Fix CPU hotplug callback registration oprofile, nmi-timer: Fix CPU hotplug callback registration intel-idle: Fix CPU hotplug callback registration clocksource, dummy-timer: Fix CPU hotplug callback registration drivers/base/topology.c: Fix CPU hotplug callback registration acpi-cpufreq: Fix CPU hotplug callback registration zsmalloc: Fix CPU hotplug callback registration scsi, fcoe: Fix CPU hotplug callback registration scsi, bnx2fc: Fix CPU hotplug callback registration scsi, bnx2i: Fix CPU hotplug callback registration ...

hwmon, coretemp: Fix CPU hotplug callback registration

2014-03-20T12:43:47+00:00

Subsystems that want to register CPU hotplug callbacks, as well as perform initialization for the CPUs that are already online, often do it as shown below: get_online_cpus(); for_each_online_cpu(cpu) init_cpu(cpu); register_cpu_notifier(&foobar_cpu_notifier); put_online_cpus(); This is wrong, since it is prone to ABBA deadlocks involving the cpu_add_remove_lock and the cpu_hotplug.lock (when running concurrently with CPU hotplug operations). Instead, the correct and race-free way of performing the callback registration is: cpu_notifier_register_begin(); for_each_online_cpu(cpu) init_cpu(cpu); /* Note the use of the double underscored version of the API */ __register_cpu_notifier(&foobar_cpu_notifier); cpu_notifier_register_done(); Fix the hwmon coretemp code by using this latter form of callback registration. Cc: Fenghua Yu Cc: Jean Delvare Cc: Ingo Molnar Acked-by: Guenter Roeck Signed-off-by: Srivatsa S. Bhat Signed-off-by: Rafael J. Wysocki

hwmon: (coretemp) Convert to use devm_hwmon_device_register_with_groups

2014-03-03T16:01:05+00:00

Simplify code, reduce code size, and attach sysfs attributes to hwmon device. For this driver, the only attribute created is the name attribute. Other attributes are still created and removed dynamically as cores are added or removed. Signed-off-by: Guenter Roeck Reviewed-by: Jean Delvare Tested-by: Jean Delvare

hwmon: (coretemp) Allocate platform data with devm_kzalloc

2014-03-03T16:01:05+00:00

This simplifies error handling. Signed-off-by: Guenter Roeck Reviewed-by: Jean Delvare Tested-by: Jean Delvare

hwmon: (coretemp) Use sysfs_create_group to create sysfs attributes

2014-03-03T16:01:05+00:00

Instead of creating each attribute individually, use sysfs_create_group to create all attributes for one core with a single call. Signed-off-by: Guenter Roeck Reviewed-by: Jean Delvare Tested-by: Jean Delvare