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authorLinus Torvalds <torvalds@linux-foundation.org>2021-02-20 21:42:18 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2021-02-20 21:42:18 -0800
commit02f9fc286e039d0bef7284fb1200ee755b525bde (patch)
tree2ce396501ee2590ca7e37c3ea6f058d164b41474 /kernel
parentMerge tag 'staging-5.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging (diff)
parentMerge branches 'powercap' and 'pm-misc' (diff)
downloadlinux-dev-02f9fc286e039d0bef7284fb1200ee755b525bde.tar.xz
linux-dev-02f9fc286e039d0bef7284fb1200ee755b525bde.zip
Merge tag 'pm-5.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management updates from Rafael Wysocki: "These add a new power capping facility allowing aggregate power constraints to be applied to sets of devices in a distributed manner, add a new CPU ID to the RAPL power capping driver and improve it, drop a cpufreq driver belonging to a platform that is not supported any more, drop two redundant cpufreq driver flags, update cpufreq drivers (intel_pstate, brcmstb-avs, qcom-hw), update the operating performance points (OPP) framework (code cleanups, new helpers, devfreq-related modifications), clean up devfreq, extend the PM clock layer, update the cpupower utility and make assorted janitorial changes. Specifics: - Add new power capping facility called DTPM (Dynamic Thermal Power Management), based on the existing power capping framework, to allow aggregate power constraints to be applied to sets of devices in a distributed manner, along with a CPU backend driver based on the Energy Model (Daniel Lezcano, Dan Carpenter, Colin Ian King). - Add AlderLake Mobile support to the Intel RAPL power capping driver and make it use the topology interface when laying out the system topology (Zhang Rui, Yunfeng Ye). - Drop the cpufreq tango driver belonging to a platform that is not supported any more (Arnd Bergmann). - Drop the redundant CPUFREQ_STICKY and CPUFREQ_PM_NO_WARN cpufreq driver flags (Viresh Kumar). - Update cpufreq drivers: * Fix max CPU frequency discovery in the intel_pstate driver and make janitorial changes in it (Chen Yu, Rafael Wysocki, Nigel Christian). * Fix resource leaks in the brcmstb-avs-cpufreq driver (Christophe JAILLET). * Make the tegra20 driver use the resource-managed API (Dmitry Osipenko). * Enable boost support in the qcom-hw driver (Shawn Guo). - Update the operating performance points (OPP) framework: * Clean up the OPP core (Dmitry Osipenko, Viresh Kumar). * Extend the OPP API by adding new helpers to it (Dmitry Osipenko, Viresh Kumar). * Allow required OPPs to be used for devfreq devices and update the devfreq governor code accordingly (Saravana Kannan). * Prepare the framework for introducing new dev_pm_opp_set_opp() helper (Viresh Kumar). * Drop dev_pm_opp_set_bw() and update related drivers (Viresh Kumar). * Allow lazy linking of required-OPPs (Viresh Kumar). - Simplify and clean up devfreq somewhat (Lukasz Luba, Yang Li, Pierre Kuo). - Update the generic power domains (genpd) framework: * Use device's next wakeup to determine domain idle state (Lina Iyer). * Improve initialization and debug (Dmitry Osipenko). * Simplify computations (Abaci Team). - Make janitorial changes in the core code handling system sleep and PM-runtime (Bhaskar Chowdhury, Bjorn Helgaas, Rikard Falkeborn, Zqiang). - Update the MAINTAINERS entry for the exynos cpuidle driver and drop DEBUG definition from intel_idle (Krzysztof Kozlowski, Tom Rix). - Extend the PM clock layer to cover clocks that must sleep (Nicolas Pitre). - Update the cpupower utility: * Update cpupower command, add support for AMD family 0x19 and clean up the code to remove many of the family checks to make future family updates easier (Nathan Fontenot, Robert Richter). * Add Makefile dependencies for install targets to allow building cpupower in parallel rather than serially (Ivan Babrou). - Make janitorial changes in power management Kconfig (Lukasz Luba)" * tag 'pm-5.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (89 commits) MAINTAINERS: cpuidle: exynos: include header in file pattern powercap: intel_rapl: Use topology interface in rapl_init_domains() powercap: intel_rapl: Use topology interface in rapl_add_package() PM: sleep: Constify static struct attribute_group PM: Kconfig: remove unneeded "default n" options PM: EM: update Kconfig description and drop "default n" option cpufreq: Remove unused flag CPUFREQ_PM_NO_WARN cpufreq: Remove CPUFREQ_STICKY flag PM / devfreq: Add required OPPs support to passive governor PM / devfreq: Cache OPP table reference in devfreq OPP: Add function to look up required OPP's for a given OPP PM / devfreq: rk3399_dmc: Remove unneeded semicolon opp: Replace ENOTSUPP with EOPNOTSUPP opp: Fix "foo * bar" should be "foo *bar" opp: Don't ignore clk_get() errors other than -ENOENT opp: Update bandwidth requirements based on scaling up/down opp: Allow lazy-linking of required-opps opp: Remove dev_pm_opp_set_bw() devfreq: tegra30: Migrate to dev_pm_opp_set_opp() drm: msm: Migrate to dev_pm_opp_set_opp() ...
Diffstat (limited to 'kernel')
-rw-r--r--kernel/power/Kconfig12
-rw-r--r--kernel/power/main.c2
-rw-r--r--kernel/power/process.c2
3 files changed, 6 insertions, 10 deletions
diff --git a/kernel/power/Kconfig b/kernel/power/Kconfig
index a7320f07689d..6bfe3ead10ad 100644
--- a/kernel/power/Kconfig
+++ b/kernel/power/Kconfig
@@ -139,7 +139,6 @@ config PM_SLEEP_SMP_NONZERO_CPU
config PM_AUTOSLEEP
bool "Opportunistic sleep"
depends on PM_SLEEP
- default n
help
Allow the kernel to trigger a system transition into a global sleep
state automatically whenever there are no active wakeup sources.
@@ -147,7 +146,6 @@ config PM_AUTOSLEEP
config PM_WAKELOCKS
bool "User space wakeup sources interface"
depends on PM_SLEEP
- default n
help
Allow user space to create, activate and deactivate wakeup source
objects with the help of a sysfs-based interface.
@@ -293,7 +291,6 @@ config PM_GENERIC_DOMAINS
config WQ_POWER_EFFICIENT_DEFAULT
bool "Enable workqueue power-efficient mode by default"
depends on PM
- default n
help
Per-cpu workqueues are generally preferred because they show
better performance thanks to cache locality; unfortunately,
@@ -322,15 +319,14 @@ config CPU_PM
bool
config ENERGY_MODEL
- bool "Energy Model for CPUs"
+ bool "Energy Model for devices with DVFS (CPUs, GPUs, etc)"
depends on SMP
depends on CPU_FREQ
- default n
help
Several subsystems (thermal and/or the task scheduler for example)
- can leverage information about the energy consumed by CPUs to make
- smarter decisions. This config option enables the framework from
- which subsystems can access the energy models.
+ can leverage information about the energy consumed by devices to
+ make smarter decisions. This config option enables the framework
+ from which subsystems can access the energy models.
The exact usage of the energy model is subsystem-dependent.
diff --git a/kernel/power/main.c b/kernel/power/main.c
index 0aefd6f57e0a..12c7e1bb442f 100644
--- a/kernel/power/main.c
+++ b/kernel/power/main.c
@@ -387,7 +387,7 @@ static struct attribute *suspend_attrs[] = {
NULL,
};
-static struct attribute_group suspend_attr_group = {
+static const struct attribute_group suspend_attr_group = {
.name = "suspend_stats",
.attrs = suspend_attrs,
};
diff --git a/kernel/power/process.c b/kernel/power/process.c
index 45b054b7b5ec..50cc63534486 100644
--- a/kernel/power/process.c
+++ b/kernel/power/process.c
@@ -235,7 +235,7 @@ void thaw_kernel_threads(void)
read_lock(&tasklist_lock);
for_each_process_thread(g, p) {
- if (p->flags & (PF_KTHREAD | PF_WQ_WORKER))
+ if (p->flags & PF_KTHREAD)
__thaw_task(p);
}
read_unlock(&tasklist_lock);