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author | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2020-03-30 15:45:57 +0300 |
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committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2020-03-30 15:45:57 +0300 |
commit | 8f1073ed8c18353ff2263294b243a315a71e9d48 (patch) | |
tree | 7f154d86c7f4494e5635d7b7289e942c26d5a5a6 /drivers/cpuidle/cpuidle.c | |
parent | 2f6bdb05e0b6adbcd05fae2aad7a9b6760fc7af6 (diff) | |
parent | a534e924c58d2e7c07509521e87d059dd029dca1 (diff) | |
download | linux-8f1073ed8c18353ff2263294b243a315a71e9d48.tar.xz |
Merge branch 'pm-qos'
* pm-qos: (30 commits)
PM: QoS: annotate data races in pm_qos_*_value()
Documentation: power: fix pm_qos_interface.rst format warning
PM: QoS: Make CPU latency QoS depend on CONFIG_CPU_IDLE
Documentation: PM: QoS: Update to reflect previous code changes
PM: QoS: Update file information comments
PM: QoS: Drop PM_QOS_CPU_DMA_LATENCY and rename related functions
sound: Call cpu_latency_qos_*() instead of pm_qos_*()
drivers: usb: Call cpu_latency_qos_*() instead of pm_qos_*()
drivers: tty: Call cpu_latency_qos_*() instead of pm_qos_*()
drivers: spi: Call cpu_latency_qos_*() instead of pm_qos_*()
drivers: net: Call cpu_latency_qos_*() instead of pm_qos_*()
drivers: mmc: Call cpu_latency_qos_*() instead of pm_qos_*()
drivers: media: Call cpu_latency_qos_*() instead of pm_qos_*()
drivers: hsi: Call cpu_latency_qos_*() instead of pm_qos_*()
drm: i915: Call cpu_latency_qos_*() instead of pm_qos_*()
x86: platform: iosf_mbi: Call cpu_latency_qos_*() instead of pm_qos_*()
cpuidle: Call cpu_latency_qos_limit() instead of pm_qos_request()
PM: QoS: Add CPU latency QoS API wrappers
PM: QoS: Adjust pm_qos_request() signature and reorder pm_qos.h
PM: QoS: Simplify definitions of CPU latency QoS trace events
...
Diffstat (limited to 'drivers/cpuidle/cpuidle.c')
-rw-r--r-- | drivers/cpuidle/cpuidle.c | 40 |
1 files changed, 1 insertions, 39 deletions
diff --git a/drivers/cpuidle/cpuidle.c b/drivers/cpuidle/cpuidle.c index de81298051b3..c149d9e20dfd 100644 --- a/drivers/cpuidle/cpuidle.c +++ b/drivers/cpuidle/cpuidle.c @@ -736,53 +736,15 @@ int cpuidle_register(struct cpuidle_driver *drv, } EXPORT_SYMBOL_GPL(cpuidle_register); -#ifdef CONFIG_SMP - -/* - * This function gets called when a part of the kernel has a new latency - * requirement. This means we need to get all processors out of their C-state, - * and then recalculate a new suitable C-state. Just do a cross-cpu IPI; that - * wakes them all right up. - */ -static int cpuidle_latency_notify(struct notifier_block *b, - unsigned long l, void *v) -{ - wake_up_all_idle_cpus(); - return NOTIFY_OK; -} - -static struct notifier_block cpuidle_latency_notifier = { - .notifier_call = cpuidle_latency_notify, -}; - -static inline void latency_notifier_init(struct notifier_block *n) -{ - pm_qos_add_notifier(PM_QOS_CPU_DMA_LATENCY, n); -} - -#else /* CONFIG_SMP */ - -#define latency_notifier_init(x) do { } while (0) - -#endif /* CONFIG_SMP */ - /** * cpuidle_init - core initializer */ static int __init cpuidle_init(void) { - int ret; - if (cpuidle_disabled()) return -ENODEV; - ret = cpuidle_add_interface(cpu_subsys.dev_root); - if (ret) - return ret; - - latency_notifier_init(&cpuidle_latency_notifier); - - return 0; + return cpuidle_add_interface(cpu_subsys.dev_root); } module_param(off, int, 0444); |