mirror of
https://github.com/BobTheBlinker/android_kernel_motorola_sm6375.git
synced 2026-10-29 19:21:31 -04:00
Linux 3.9-rc5
-----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.19 (GNU/Linux) iQEcBAABAgAGBQJRWLTrAAoJEHm+PkMAQRiGe8oH/iMy48mecVWvxVZn74Tx3Cef xmW/PnAIj28EhSPqK49N/Ow6AfQToFKf7AP0ge20KAf5teTq95AY+tH74DAANt8F BjKXXTZiR5xwBvRkq7CR5wDcCvEcBAAz8fgTEd6SEDB2d2VXFf5eKdKUqt1avTCh Z6Hup5kuwX+ddtwY2DCBXtp2n6fL0Rm5yLzY1A3OOBye1E7VyLTF7M5BR603Q44P 4kRLxn8+R7jy3hTuZIhAeoS8TKUoBwVk7DmKxEzrhTHZVOmvwE9lEHybRnIyOpd/ k1JnbRbiPsLsCVFOn10SQkGDAIk00lro3tuWP2C1ljERiD/OOh5Ui9nXYAhMkbI= =q15K -----END PGP SIGNATURE----- Merge tag 'v3.9-rc5' into wq/for-3.10 Writeback conversion to workqueue will be based on top of wq/for-3.10 branch to take advantage of custom attrs and NUMA support for unbound workqueues. Mainline currently contains two commits which result in non-trivial merge conflicts with wq/for-3.10 and because block/for-3.10/core is based on v3.9-rc3 which contains one of the conflicting commits, we need a pre-merge-window merge anyway. Let's pull v3.9-rc5 into wq/for-3.10 so that the block tree doesn't suffer from workqueue merge conflicts. The two conflicts and their resolutions: *e68035fb65("workqueue: convert to idr_alloc()") in mainline changes worker_pool_assign_id() to use idr_alloc() instead of the old idr interface. worker_pool_assign_id() goes through multiple locking changes in wq/for-3.10 causing the following conflict. static int worker_pool_assign_id(struct worker_pool *pool) { int ret; <<<<<<< HEAD lockdep_assert_held(&wq_pool_mutex); do { if (!idr_pre_get(&worker_pool_idr, GFP_KERNEL)) return -ENOMEM; ret = idr_get_new(&worker_pool_idr, pool, &pool->id); } while (ret == -EAGAIN); ======= mutex_lock(&worker_pool_idr_mutex); ret = idr_alloc(&worker_pool_idr, pool, 0, 0, GFP_KERNEL); if (ret >= 0) pool->id = ret; mutex_unlock(&worker_pool_idr_mutex); >>>>>>> c67bf5361e7e66a0ff1f4caf95f89347d55dfb89 return ret < 0 ? ret : 0; } We want locking from the former and idr_alloc() usage from the latter, which can be combined to the following. static int worker_pool_assign_id(struct worker_pool *pool) { int ret; lockdep_assert_held(&wq_pool_mutex); ret = idr_alloc(&worker_pool_idr, pool, 0, 0, GFP_KERNEL); if (ret >= 0) { pool->id = ret; return 0; } return ret; } *eb2834285c("workqueue: fix possible pool stall bug in wq_unbind_fn()") updated wq_unbind_fn() such that it has single larger for_each_std_worker_pool() loop instead of two separate loops with a schedule() call inbetween. wq/for-3.10 renamed pool->assoc_mutex to pool->manager_mutex causing the following conflict (earlier function body and comments omitted for brevity). static void wq_unbind_fn(struct work_struct *work) { ... spin_unlock_irq(&pool->lock); <<<<<<< HEAD mutex_unlock(&pool->manager_mutex); } ======= mutex_unlock(&pool->assoc_mutex); >>>>>>> c67bf5361e7e66a0ff1f4caf95f89347d55dfb89 schedule(); <<<<<<< HEAD for_each_cpu_worker_pool(pool, cpu) ======= >>>>>>> c67bf5361e7e66a0ff1f4caf95f89347d55dfb89 atomic_set(&pool->nr_running, 0); spin_lock_irq(&pool->lock); wake_up_worker(pool); spin_unlock_irq(&pool->lock); } } The resolution is mostly trivial. We want the control flow of the latter with the rename of the former. static void wq_unbind_fn(struct work_struct *work) { ... spin_unlock_irq(&pool->lock); mutex_unlock(&pool->manager_mutex); schedule(); atomic_set(&pool->nr_running, 0); spin_lock_irq(&pool->lock); wake_up_worker(pool); spin_unlock_irq(&pool->lock); } } Signed-off-by: Tejun Heo <[email protected]>
This commit is contained in:
Tejun Heo
commit
229641a6f1
1122 changed files with 12784 additions and 6048 deletions
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@ -99,7 +99,6 @@ void device_pm_add(struct device *dev)
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dev_warn(dev, "parent %s should not be sleeping\n",
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dev_name(dev->parent));
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list_add_tail(&dev->power.entry, &dpm_list);
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dev_pm_qos_constraints_init(dev);
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mutex_unlock(&dpm_list_mtx);
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}
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@ -113,7 +112,6 @@ void device_pm_remove(struct device *dev)
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dev->bus ? dev->bus->name : "No Bus", dev_name(dev));
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complete_all(&dev->power.completion);
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mutex_lock(&dpm_list_mtx);
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dev_pm_qos_constraints_destroy(dev);
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list_del_init(&dev->power.entry);
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mutex_unlock(&dpm_list_mtx);
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device_wakeup_disable(dev);
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@ -4,7 +4,7 @@ static inline void device_pm_init_common(struct device *dev)
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{
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if (!dev->power.early_init) {
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spin_lock_init(&dev->power.lock);
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dev->power.power_state = PMSG_INVALID;
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dev->power.qos = NULL;
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dev->power.early_init = true;
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}
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}
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@ -56,14 +56,10 @@ extern void device_pm_move_last(struct device *);
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static inline void device_pm_sleep_init(struct device *dev) {}
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static inline void device_pm_add(struct device *dev)
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{
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dev_pm_qos_constraints_init(dev);
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}
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static inline void device_pm_add(struct device *dev) {}
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static inline void device_pm_remove(struct device *dev)
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{
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dev_pm_qos_constraints_destroy(dev);
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pm_runtime_remove(dev);
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}
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@ -41,6 +41,7 @@
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#include <linux/mutex.h>
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#include <linux/export.h>
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#include <linux/pm_runtime.h>
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#include <linux/err.h>
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#include "power.h"
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@ -61,7 +62,7 @@ enum pm_qos_flags_status __dev_pm_qos_flags(struct device *dev, s32 mask)
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struct pm_qos_flags *pqf;
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s32 val;
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if (!qos)
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if (IS_ERR_OR_NULL(qos))
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return PM_QOS_FLAGS_UNDEFINED;
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pqf = &qos->flags;
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@ -101,7 +102,8 @@ EXPORT_SYMBOL_GPL(dev_pm_qos_flags);
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*/
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s32 __dev_pm_qos_read_value(struct device *dev)
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{
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return dev->power.qos ? pm_qos_read_value(&dev->power.qos->latency) : 0;
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return IS_ERR_OR_NULL(dev->power.qos) ?
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0 : pm_qos_read_value(&dev->power.qos->latency);
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}
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/**
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@ -198,20 +200,8 @@ static int dev_pm_qos_constraints_allocate(struct device *dev)
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return 0;
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}
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/**
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* dev_pm_qos_constraints_init - Initalize device's PM QoS constraints pointer.
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* @dev: target device
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*
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* Called from the device PM subsystem during device insertion under
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* device_pm_lock().
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*/
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void dev_pm_qos_constraints_init(struct device *dev)
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{
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mutex_lock(&dev_pm_qos_mtx);
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dev->power.qos = NULL;
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dev->power.power_state = PMSG_ON;
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mutex_unlock(&dev_pm_qos_mtx);
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}
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static void __dev_pm_qos_hide_latency_limit(struct device *dev);
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static void __dev_pm_qos_hide_flags(struct device *dev);
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/**
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* dev_pm_qos_constraints_destroy
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@ -226,16 +216,15 @@ void dev_pm_qos_constraints_destroy(struct device *dev)
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struct pm_qos_constraints *c;
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struct pm_qos_flags *f;
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mutex_lock(&dev_pm_qos_mtx);
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/*
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* If the device's PM QoS resume latency limit or PM QoS flags have been
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* exposed to user space, they have to be hidden at this point.
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*/
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dev_pm_qos_hide_latency_limit(dev);
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dev_pm_qos_hide_flags(dev);
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__dev_pm_qos_hide_latency_limit(dev);
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__dev_pm_qos_hide_flags(dev);
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mutex_lock(&dev_pm_qos_mtx);
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dev->power.power_state = PMSG_INVALID;
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qos = dev->power.qos;
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if (!qos)
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goto out;
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@ -257,7 +246,7 @@ void dev_pm_qos_constraints_destroy(struct device *dev)
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}
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spin_lock_irq(&dev->power.lock);
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dev->power.qos = NULL;
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dev->power.qos = ERR_PTR(-ENODEV);
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spin_unlock_irq(&dev->power.lock);
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kfree(c->notifiers);
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@ -301,32 +290,19 @@ int dev_pm_qos_add_request(struct device *dev, struct dev_pm_qos_request *req,
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"%s() called for already added request\n", __func__))
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return -EINVAL;
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req->dev = dev;
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mutex_lock(&dev_pm_qos_mtx);
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if (!dev->power.qos) {
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if (dev->power.power_state.event == PM_EVENT_INVALID) {
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/* The device has been removed from the system. */
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req->dev = NULL;
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ret = -ENODEV;
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goto out;
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} else {
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/*
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* Allocate the constraints data on the first call to
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* add_request, i.e. only if the data is not already
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* allocated and if the device has not been removed.
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*/
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ret = dev_pm_qos_constraints_allocate(dev);
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}
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}
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if (IS_ERR(dev->power.qos))
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ret = -ENODEV;
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else if (!dev->power.qos)
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ret = dev_pm_qos_constraints_allocate(dev);
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if (!ret) {
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req->dev = dev;
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req->type = type;
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ret = apply_constraint(req, PM_QOS_ADD_REQ, value);
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}
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out:
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mutex_unlock(&dev_pm_qos_mtx);
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return ret;
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@ -344,7 +320,14 @@ static int __dev_pm_qos_update_request(struct dev_pm_qos_request *req,
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s32 curr_value;
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int ret = 0;
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if (!req->dev->power.qos)
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if (!req) /*guard against callers passing in null */
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return -EINVAL;
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if (WARN(!dev_pm_qos_request_active(req),
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"%s() called for unknown object\n", __func__))
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return -EINVAL;
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if (IS_ERR_OR_NULL(req->dev->power.qos))
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return -ENODEV;
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switch(req->type) {
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@ -386,6 +369,17 @@ int dev_pm_qos_update_request(struct dev_pm_qos_request *req, s32 new_value)
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{
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int ret;
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mutex_lock(&dev_pm_qos_mtx);
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ret = __dev_pm_qos_update_request(req, new_value);
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mutex_unlock(&dev_pm_qos_mtx);
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return ret;
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}
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EXPORT_SYMBOL_GPL(dev_pm_qos_update_request);
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static int __dev_pm_qos_remove_request(struct dev_pm_qos_request *req)
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{
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int ret;
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if (!req) /*guard against callers passing in null */
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return -EINVAL;
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@ -393,13 +387,13 @@ int dev_pm_qos_update_request(struct dev_pm_qos_request *req, s32 new_value)
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"%s() called for unknown object\n", __func__))
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return -EINVAL;
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mutex_lock(&dev_pm_qos_mtx);
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ret = __dev_pm_qos_update_request(req, new_value);
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mutex_unlock(&dev_pm_qos_mtx);
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if (IS_ERR_OR_NULL(req->dev->power.qos))
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return -ENODEV;
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ret = apply_constraint(req, PM_QOS_REMOVE_REQ, PM_QOS_DEFAULT_VALUE);
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memset(req, 0, sizeof(*req));
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return ret;
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}
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EXPORT_SYMBOL_GPL(dev_pm_qos_update_request);
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/**
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* dev_pm_qos_remove_request - modifies an existing qos request
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@ -418,26 +412,10 @@ EXPORT_SYMBOL_GPL(dev_pm_qos_update_request);
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*/
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int dev_pm_qos_remove_request(struct dev_pm_qos_request *req)
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{
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int ret = 0;
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if (!req) /*guard against callers passing in null */
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return -EINVAL;
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if (WARN(!dev_pm_qos_request_active(req),
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"%s() called for unknown object\n", __func__))
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return -EINVAL;
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int ret;
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mutex_lock(&dev_pm_qos_mtx);
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if (req->dev->power.qos) {
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ret = apply_constraint(req, PM_QOS_REMOVE_REQ,
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PM_QOS_DEFAULT_VALUE);
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memset(req, 0, sizeof(*req));
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} else {
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/* Return if the device has been removed */
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ret = -ENODEV;
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}
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ret = __dev_pm_qos_remove_request(req);
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mutex_unlock(&dev_pm_qos_mtx);
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return ret;
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}
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@ -462,9 +440,10 @@ int dev_pm_qos_add_notifier(struct device *dev, struct notifier_block *notifier)
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mutex_lock(&dev_pm_qos_mtx);
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if (!dev->power.qos)
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ret = dev->power.power_state.event != PM_EVENT_INVALID ?
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dev_pm_qos_constraints_allocate(dev) : -ENODEV;
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if (IS_ERR(dev->power.qos))
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ret = -ENODEV;
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else if (!dev->power.qos)
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ret = dev_pm_qos_constraints_allocate(dev);
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if (!ret)
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ret = blocking_notifier_chain_register(
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@ -493,7 +472,7 @@ int dev_pm_qos_remove_notifier(struct device *dev,
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mutex_lock(&dev_pm_qos_mtx);
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/* Silently return if the constraints object is not present. */
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if (dev->power.qos)
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if (!IS_ERR_OR_NULL(dev->power.qos))
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retval = blocking_notifier_chain_unregister(
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dev->power.qos->latency.notifiers,
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notifier);
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@ -563,16 +542,20 @@ EXPORT_SYMBOL_GPL(dev_pm_qos_add_ancestor_request);
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static void __dev_pm_qos_drop_user_request(struct device *dev,
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enum dev_pm_qos_req_type type)
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{
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struct dev_pm_qos_request *req = NULL;
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switch(type) {
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case DEV_PM_QOS_LATENCY:
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dev_pm_qos_remove_request(dev->power.qos->latency_req);
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req = dev->power.qos->latency_req;
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dev->power.qos->latency_req = NULL;
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break;
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case DEV_PM_QOS_FLAGS:
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dev_pm_qos_remove_request(dev->power.qos->flags_req);
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req = dev->power.qos->flags_req;
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dev->power.qos->flags_req = NULL;
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break;
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}
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__dev_pm_qos_remove_request(req);
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kfree(req);
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}
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/**
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|
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@ -588,36 +571,57 @@ int dev_pm_qos_expose_latency_limit(struct device *dev, s32 value)
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if (!device_is_registered(dev) || value < 0)
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return -EINVAL;
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|
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if (dev->power.qos && dev->power.qos->latency_req)
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return -EEXIST;
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|
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req = kzalloc(sizeof(*req), GFP_KERNEL);
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if (!req)
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return -ENOMEM;
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|
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ret = dev_pm_qos_add_request(dev, req, DEV_PM_QOS_LATENCY, value);
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if (ret < 0)
|
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if (ret < 0) {
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kfree(req);
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return ret;
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}
|
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|
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mutex_lock(&dev_pm_qos_mtx);
|
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|
||||
if (IS_ERR_OR_NULL(dev->power.qos))
|
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ret = -ENODEV;
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||||
else if (dev->power.qos->latency_req)
|
||||
ret = -EEXIST;
|
||||
|
||||
if (ret < 0) {
|
||||
__dev_pm_qos_remove_request(req);
|
||||
kfree(req);
|
||||
goto out;
|
||||
}
|
||||
|
||||
dev->power.qos->latency_req = req;
|
||||
ret = pm_qos_sysfs_add_latency(dev);
|
||||
if (ret)
|
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__dev_pm_qos_drop_user_request(dev, DEV_PM_QOS_LATENCY);
|
||||
|
||||
out:
|
||||
mutex_unlock(&dev_pm_qos_mtx);
|
||||
return ret;
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(dev_pm_qos_expose_latency_limit);
|
||||
|
||||
static void __dev_pm_qos_hide_latency_limit(struct device *dev)
|
||||
{
|
||||
if (!IS_ERR_OR_NULL(dev->power.qos) && dev->power.qos->latency_req) {
|
||||
pm_qos_sysfs_remove_latency(dev);
|
||||
__dev_pm_qos_drop_user_request(dev, DEV_PM_QOS_LATENCY);
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* dev_pm_qos_hide_latency_limit - Hide PM QoS latency limit from user space.
|
||||
* @dev: Device whose PM QoS latency limit is to be hidden from user space.
|
||||
*/
|
||||
void dev_pm_qos_hide_latency_limit(struct device *dev)
|
||||
{
|
||||
if (dev->power.qos && dev->power.qos->latency_req) {
|
||||
pm_qos_sysfs_remove_latency(dev);
|
||||
__dev_pm_qos_drop_user_request(dev, DEV_PM_QOS_LATENCY);
|
||||
}
|
||||
mutex_lock(&dev_pm_qos_mtx);
|
||||
__dev_pm_qos_hide_latency_limit(dev);
|
||||
mutex_unlock(&dev_pm_qos_mtx);
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(dev_pm_qos_hide_latency_limit);
|
||||
|
||||
|
|
@ -634,41 +638,61 @@ int dev_pm_qos_expose_flags(struct device *dev, s32 val)
|
|||
if (!device_is_registered(dev))
|
||||
return -EINVAL;
|
||||
|
||||
if (dev->power.qos && dev->power.qos->flags_req)
|
||||
return -EEXIST;
|
||||
|
||||
req = kzalloc(sizeof(*req), GFP_KERNEL);
|
||||
if (!req)
|
||||
return -ENOMEM;
|
||||
|
||||
pm_runtime_get_sync(dev);
|
||||
ret = dev_pm_qos_add_request(dev, req, DEV_PM_QOS_FLAGS, val);
|
||||
if (ret < 0)
|
||||
goto fail;
|
||||
if (ret < 0) {
|
||||
kfree(req);
|
||||
return ret;
|
||||
}
|
||||
|
||||
pm_runtime_get_sync(dev);
|
||||
mutex_lock(&dev_pm_qos_mtx);
|
||||
|
||||
if (IS_ERR_OR_NULL(dev->power.qos))
|
||||
ret = -ENODEV;
|
||||
else if (dev->power.qos->flags_req)
|
||||
ret = -EEXIST;
|
||||
|
||||
if (ret < 0) {
|
||||
__dev_pm_qos_remove_request(req);
|
||||
kfree(req);
|
||||
goto out;
|
||||
}
|
||||
|
||||
dev->power.qos->flags_req = req;
|
||||
ret = pm_qos_sysfs_add_flags(dev);
|
||||
if (ret)
|
||||
__dev_pm_qos_drop_user_request(dev, DEV_PM_QOS_FLAGS);
|
||||
|
||||
fail:
|
||||
out:
|
||||
mutex_unlock(&dev_pm_qos_mtx);
|
||||
pm_runtime_put(dev);
|
||||
return ret;
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(dev_pm_qos_expose_flags);
|
||||
|
||||
static void __dev_pm_qos_hide_flags(struct device *dev)
|
||||
{
|
||||
if (!IS_ERR_OR_NULL(dev->power.qos) && dev->power.qos->flags_req) {
|
||||
pm_qos_sysfs_remove_flags(dev);
|
||||
__dev_pm_qos_drop_user_request(dev, DEV_PM_QOS_FLAGS);
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* dev_pm_qos_hide_flags - Hide PM QoS flags of a device from user space.
|
||||
* @dev: Device whose PM QoS flags are to be hidden from user space.
|
||||
*/
|
||||
void dev_pm_qos_hide_flags(struct device *dev)
|
||||
{
|
||||
if (dev->power.qos && dev->power.qos->flags_req) {
|
||||
pm_qos_sysfs_remove_flags(dev);
|
||||
pm_runtime_get_sync(dev);
|
||||
__dev_pm_qos_drop_user_request(dev, DEV_PM_QOS_FLAGS);
|
||||
pm_runtime_put(dev);
|
||||
}
|
||||
pm_runtime_get_sync(dev);
|
||||
mutex_lock(&dev_pm_qos_mtx);
|
||||
__dev_pm_qos_hide_flags(dev);
|
||||
mutex_unlock(&dev_pm_qos_mtx);
|
||||
pm_runtime_put(dev);
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(dev_pm_qos_hide_flags);
|
||||
|
||||
|
|
@ -683,12 +707,14 @@ int dev_pm_qos_update_flags(struct device *dev, s32 mask, bool set)
|
|||
s32 value;
|
||||
int ret;
|
||||
|
||||
if (!dev->power.qos || !dev->power.qos->flags_req)
|
||||
return -EINVAL;
|
||||
|
||||
pm_runtime_get_sync(dev);
|
||||
mutex_lock(&dev_pm_qos_mtx);
|
||||
|
||||
if (IS_ERR_OR_NULL(dev->power.qos) || !dev->power.qos->flags_req) {
|
||||
ret = -EINVAL;
|
||||
goto out;
|
||||
}
|
||||
|
||||
value = dev_pm_qos_requested_flags(dev);
|
||||
if (set)
|
||||
value |= mask;
|
||||
|
|
@ -697,9 +723,12 @@ int dev_pm_qos_update_flags(struct device *dev, s32 mask, bool set)
|
|||
|
||||
ret = __dev_pm_qos_update_request(dev->power.qos->flags_req, value);
|
||||
|
||||
out:
|
||||
mutex_unlock(&dev_pm_qos_mtx);
|
||||
pm_runtime_put(dev);
|
||||
|
||||
return ret;
|
||||
}
|
||||
#else /* !CONFIG_PM_RUNTIME */
|
||||
static void __dev_pm_qos_hide_latency_limit(struct device *dev) {}
|
||||
static void __dev_pm_qos_hide_flags(struct device *dev) {}
|
||||
#endif /* CONFIG_PM_RUNTIME */
|
||||
|
|
|
|||
|
|
@ -708,6 +708,7 @@ void rpm_sysfs_remove(struct device *dev)
|
|||
|
||||
void dpm_sysfs_remove(struct device *dev)
|
||||
{
|
||||
dev_pm_qos_constraints_destroy(dev);
|
||||
rpm_sysfs_remove(dev);
|
||||
sysfs_unmerge_group(&dev->kobj, &pm_wakeup_attr_group);
|
||||
sysfs_remove_group(&dev->kobj, &pm_attr_group);
|
||||
|
|
|
|||
|
|
@ -184,6 +184,7 @@ static irqreturn_t regmap_irq_thread(int irq, void *d)
|
|||
if (ret < 0) {
|
||||
dev_err(map->dev, "IRQ thread failed to resume: %d\n",
|
||||
ret);
|
||||
pm_runtime_put(map->dev);
|
||||
return IRQ_NONE;
|
||||
}
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in a new issue