From db1b5ddd53365a07a7754803bdba370ebb84ba19 Mon Sep 17 00:00:00 2001 From: Matan Barak Date: Tue, 18 Apr 2017 12:03:42 +0300 Subject: [PATCH] IB/core: Rename uverbs event file structure Previously, ib_uverbs_event_file was suffixed by _file as it contained the actual file information. Since it's now only used as base struct for ib_uverbs_async_event_file and ib_uverbs_completion_event_file, we change its name to ib_uverbs_event_queue. This represents its logical role better. Fixes: 1e7710f3f656 ('IB/core: Change completion channel to use the reworked objects schema') Signed-off-by: Matan Barak Reviewed-by: Sean Hefty Signed-off-by: Doug Ledford --- drivers/infiniband/core/uverbs.h | 21 ++-- drivers/infiniband/core/uverbs_cmd.c | 8 +- drivers/infiniband/core/uverbs_main.c | 132 ++++++++++----------- drivers/infiniband/core/uverbs_std_types.c | 20 ++-- 4 files changed, 91 insertions(+), 90 deletions(-) diff --git a/drivers/infiniband/core/uverbs.h b/drivers/infiniband/core/uverbs.h index 826f82748718..a3230b6ab766 100644 --- a/drivers/infiniband/core/uverbs.h +++ b/drivers/infiniband/core/uverbs.h @@ -76,12 +76,13 @@ * an asynchronous event queue file is created and released when the * event file is closed. * - * struct ib_uverbs_event_file: One reference is held by the VFS and - * released when the file is closed. For asynchronous event files, - * another reference is held by the corresponding main context file - * and released when that file is closed. For completion event files, - * a reference is taken when a CQ is created that uses the file, and - * released when the CQ is destroyed. + * struct ib_uverbs_event_queue: Base structure for + * struct ib_uverbs_async_event_file and struct ib_uverbs_completion_event_file. + * One reference is held by the VFS and released when the file is closed. + * For asynchronous event files, another reference is held by the corresponding + * main context file and released when that file is closed. For completion + * event files, a reference is taken when a CQ is created that uses the file, + * and released when the CQ is destroyed. */ struct ib_uverbs_device { @@ -101,7 +102,7 @@ struct ib_uverbs_device { struct list_head uverbs_events_file_list; }; -struct ib_uverbs_event_file { +struct ib_uverbs_event_queue { spinlock_t lock; int is_closed; wait_queue_head_t poll_wait; @@ -110,7 +111,7 @@ struct ib_uverbs_event_file { }; struct ib_uverbs_async_event_file { - struct ib_uverbs_event_file ev_file; + struct ib_uverbs_event_queue ev_queue; struct ib_uverbs_file *uverbs_file; struct kref ref; struct list_head list; @@ -118,7 +119,7 @@ struct ib_uverbs_async_event_file { struct ib_uverbs_completion_event_file { struct ib_uobject_file uobj_file; - struct ib_uverbs_event_file ev_file; + struct ib_uverbs_event_queue ev_queue; }; struct ib_uverbs_file { @@ -191,7 +192,7 @@ struct ib_ucq_object { }; extern const struct file_operations uverbs_event_fops; -void ib_uverbs_init_event_file(struct ib_uverbs_event_file *ev_file); +void ib_uverbs_init_event_queue(struct ib_uverbs_event_queue *ev_queue); struct file *ib_uverbs_alloc_async_event_file(struct ib_uverbs_file *uverbs_file, struct ib_device *ib_dev); void ib_uverbs_free_async_event_file(struct ib_uverbs_file *uverbs_file); diff --git a/drivers/infiniband/core/uverbs_cmd.c b/drivers/infiniband/core/uverbs_cmd.c index 66cb22e82e24..e2fee045f03b 100644 --- a/drivers/infiniband/core/uverbs_cmd.c +++ b/drivers/infiniband/core/uverbs_cmd.c @@ -943,7 +943,7 @@ ssize_t ib_uverbs_create_comp_channel(struct ib_uverbs_file *file, ev_file = container_of(uobj, struct ib_uverbs_completion_event_file, uobj_file.uobj); - ib_uverbs_init_event_file(&ev_file->ev_file); + ib_uverbs_init_event_queue(&ev_file->ev_queue); if (copy_to_user((void __user *) (unsigned long) cmd.response, &resp, sizeof resp)) { @@ -1015,7 +1015,7 @@ static struct ib_ucq_object *create_cq(struct ib_uverbs_file *file, cq->uobject = &obj->uobject; cq->comp_handler = ib_uverbs_comp_handler; cq->event_handler = ib_uverbs_cq_event_handler; - cq->cq_context = &ev_file->ev_file; + cq->cq_context = &ev_file->ev_queue; atomic_set(&cq->usecnt, 0); obj->uobject.object = cq; @@ -1296,7 +1296,7 @@ ssize_t ib_uverbs_destroy_cq(struct ib_uverbs_file *file, struct ib_uobject *uobj; struct ib_cq *cq; struct ib_ucq_object *obj; - struct ib_uverbs_event_file *ev_file; + struct ib_uverbs_event_queue *ev_queue; int ret = -EINVAL; if (copy_from_user(&cmd, buf, sizeof cmd)) @@ -1313,7 +1313,7 @@ ssize_t ib_uverbs_destroy_cq(struct ib_uverbs_file *file, */ uverbs_uobject_get(uobj); cq = uobj->object; - ev_file = cq->cq_context; + ev_queue = cq->cq_context; obj = container_of(cq->uobject, struct ib_ucq_object, uobject); memset(&resp, 0, sizeof(resp)); diff --git a/drivers/infiniband/core/uverbs_main.c b/drivers/infiniband/core/uverbs_main.c index 4ab0e5d3ce15..3a9883d1257e 100644 --- a/drivers/infiniband/core/uverbs_main.c +++ b/drivers/infiniband/core/uverbs_main.c @@ -171,22 +171,22 @@ void ib_uverbs_release_ucq(struct ib_uverbs_file *file, struct ib_uverbs_event *evt, *tmp; if (ev_file) { - spin_lock_irq(&ev_file->ev_file.lock); + spin_lock_irq(&ev_file->ev_queue.lock); list_for_each_entry_safe(evt, tmp, &uobj->comp_list, obj_list) { list_del(&evt->list); kfree(evt); } - spin_unlock_irq(&ev_file->ev_file.lock); + spin_unlock_irq(&ev_file->ev_queue.lock); uverbs_uobject_put(&ev_file->uobj_file.uobj); } - spin_lock_irq(&file->async_file->ev_file.lock); + spin_lock_irq(&file->async_file->ev_queue.lock); list_for_each_entry_safe(evt, tmp, &uobj->async_list, obj_list) { list_del(&evt->list); kfree(evt); } - spin_unlock_irq(&file->async_file->ev_file.lock); + spin_unlock_irq(&file->async_file->ev_queue.lock); } void ib_uverbs_release_uevent(struct ib_uverbs_file *file, @@ -194,12 +194,12 @@ void ib_uverbs_release_uevent(struct ib_uverbs_file *file, { struct ib_uverbs_event *evt, *tmp; - spin_lock_irq(&file->async_file->ev_file.lock); + spin_lock_irq(&file->async_file->ev_queue.lock); list_for_each_entry_safe(evt, tmp, &uobj->event_list, obj_list) { list_del(&evt->list); kfree(evt); } - spin_unlock_irq(&file->async_file->ev_file.lock); + spin_unlock_irq(&file->async_file->ev_queue.lock); } void ib_uverbs_detach_umcast(struct ib_qp *qp, @@ -253,7 +253,7 @@ void ib_uverbs_release_file(struct kref *ref) kfree(file); } -static ssize_t ib_uverbs_event_read(struct ib_uverbs_event_file *file, +static ssize_t ib_uverbs_event_read(struct ib_uverbs_event_queue *ev_queue, struct ib_uverbs_file *uverbs_file, struct file *filp, char __user *buf, size_t count, loff_t *pos, @@ -262,16 +262,16 @@ static ssize_t ib_uverbs_event_read(struct ib_uverbs_event_file *file, struct ib_uverbs_event *event; int ret = 0; - spin_lock_irq(&file->lock); + spin_lock_irq(&ev_queue->lock); - while (list_empty(&file->event_list)) { - spin_unlock_irq(&file->lock); + while (list_empty(&ev_queue->event_list)) { + spin_unlock_irq(&ev_queue->lock); if (filp->f_flags & O_NONBLOCK) return -EAGAIN; - if (wait_event_interruptible(file->poll_wait, - (!list_empty(&file->event_list) || + if (wait_event_interruptible(ev_queue->poll_wait, + (!list_empty(&ev_queue->event_list) || /* The barriers built into wait_event_interruptible() * and wake_up() guarentee this will see the null set * without using RCU @@ -280,27 +280,27 @@ static ssize_t ib_uverbs_event_read(struct ib_uverbs_event_file *file, return -ERESTARTSYS; /* If device was disassociated and no event exists set an error */ - if (list_empty(&file->event_list) && + if (list_empty(&ev_queue->event_list) && !uverbs_file->device->ib_dev) return -EIO; - spin_lock_irq(&file->lock); + spin_lock_irq(&ev_queue->lock); } - event = list_entry(file->event_list.next, struct ib_uverbs_event, list); + event = list_entry(ev_queue->event_list.next, struct ib_uverbs_event, list); if (eventsz > count) { ret = -EINVAL; event = NULL; } else { - list_del(file->event_list.next); + list_del(ev_queue->event_list.next); if (event->counter) { ++(*event->counter); list_del(&event->obj_list); } } - spin_unlock_irq(&file->lock); + spin_unlock_irq(&ev_queue->lock); if (event) { if (copy_to_user(buf, event, eventsz)) @@ -319,7 +319,7 @@ static ssize_t ib_uverbs_async_event_read(struct file *filp, char __user *buf, { struct ib_uverbs_async_event_file *file = filp->private_data; - return ib_uverbs_event_read(&file->ev_file, file->uverbs_file, filp, + return ib_uverbs_event_read(&file->ev_queue, file->uverbs_file, filp, buf, count, pos, sizeof(struct ib_uverbs_async_event_desc)); } @@ -330,24 +330,24 @@ static ssize_t ib_uverbs_comp_event_read(struct file *filp, char __user *buf, struct ib_uverbs_completion_event_file *comp_ev_file = filp->private_data; - return ib_uverbs_event_read(&comp_ev_file->ev_file, + return ib_uverbs_event_read(&comp_ev_file->ev_queue, comp_ev_file->uobj_file.ufile, filp, buf, count, pos, sizeof(struct ib_uverbs_comp_event_desc)); } -static unsigned int ib_uverbs_event_poll(struct ib_uverbs_event_file *file, +static unsigned int ib_uverbs_event_poll(struct ib_uverbs_event_queue *ev_queue, struct file *filp, struct poll_table_struct *wait) { unsigned int pollflags = 0; - poll_wait(filp, &file->poll_wait, wait); + poll_wait(filp, &ev_queue->poll_wait, wait); - spin_lock_irq(&file->lock); - if (!list_empty(&file->event_list)) + spin_lock_irq(&ev_queue->lock); + if (!list_empty(&ev_queue->event_list)) pollflags = POLLIN | POLLRDNORM; - spin_unlock_irq(&file->lock); + spin_unlock_irq(&ev_queue->lock); return pollflags; } @@ -364,14 +364,14 @@ static unsigned int ib_uverbs_comp_event_poll(struct file *filp, struct ib_uverbs_completion_event_file *comp_ev_file = filp->private_data; - return ib_uverbs_event_poll(&comp_ev_file->ev_file, filp, wait); + return ib_uverbs_event_poll(&comp_ev_file->ev_queue, filp, wait); } static int ib_uverbs_async_event_fasync(int fd, struct file *filp, int on) { - struct ib_uverbs_event_file *file = filp->private_data; + struct ib_uverbs_event_queue *ev_queue = filp->private_data; - return fasync_helper(fd, filp, on, &file->async_queue); + return fasync_helper(fd, filp, on, &ev_queue->async_queue); } static int ib_uverbs_comp_event_fasync(int fd, struct file *filp, int on) @@ -379,7 +379,7 @@ static int ib_uverbs_comp_event_fasync(int fd, struct file *filp, int on) struct ib_uverbs_completion_event_file *comp_ev_file = filp->private_data; - return fasync_helper(fd, filp, on, &comp_ev_file->ev_file.async_queue); + return fasync_helper(fd, filp, on, &comp_ev_file->ev_queue.async_queue); } static int ib_uverbs_async_event_close(struct inode *inode, struct file *filp) @@ -390,15 +390,15 @@ static int ib_uverbs_async_event_close(struct inode *inode, struct file *filp) int closed_already = 0; mutex_lock(&uverbs_file->device->lists_mutex); - spin_lock_irq(&file->ev_file.lock); - closed_already = file->ev_file.is_closed; - file->ev_file.is_closed = 1; - list_for_each_entry_safe(entry, tmp, &file->ev_file.event_list, list) { + spin_lock_irq(&file->ev_queue.lock); + closed_already = file->ev_queue.is_closed; + file->ev_queue.is_closed = 1; + list_for_each_entry_safe(entry, tmp, &file->ev_queue.event_list, list) { if (entry->counter) list_del(&entry->obj_list); kfree(entry); } - spin_unlock_irq(&file->ev_file.lock); + spin_unlock_irq(&file->ev_queue.lock); if (!closed_already) { list_del(&file->list); ib_unregister_event_handler(&uverbs_file->event_handler); @@ -416,13 +416,13 @@ static int ib_uverbs_comp_event_close(struct inode *inode, struct file *filp) struct ib_uverbs_completion_event_file *file = filp->private_data; struct ib_uverbs_event *entry, *tmp; - spin_lock_irq(&file->ev_file.lock); - list_for_each_entry_safe(entry, tmp, &file->ev_file.event_list, list) { + spin_lock_irq(&file->ev_queue.lock); + list_for_each_entry_safe(entry, tmp, &file->ev_queue.event_list, list) { if (entry->counter) list_del(&entry->obj_list); kfree(entry); } - spin_unlock_irq(&file->ev_file.lock); + spin_unlock_irq(&file->ev_queue.lock); uverbs_close_fd(filp); @@ -449,23 +449,23 @@ static const struct file_operations uverbs_async_event_fops = { void ib_uverbs_comp_handler(struct ib_cq *cq, void *cq_context) { - struct ib_uverbs_event_file *file = cq_context; + struct ib_uverbs_event_queue *ev_queue = cq_context; struct ib_ucq_object *uobj; struct ib_uverbs_event *entry; unsigned long flags; - if (!file) + if (!ev_queue) return; - spin_lock_irqsave(&file->lock, flags); - if (file->is_closed) { - spin_unlock_irqrestore(&file->lock, flags); + spin_lock_irqsave(&ev_queue->lock, flags); + if (ev_queue->is_closed) { + spin_unlock_irqrestore(&ev_queue->lock, flags); return; } entry = kmalloc(sizeof *entry, GFP_ATOMIC); if (!entry) { - spin_unlock_irqrestore(&file->lock, flags); + spin_unlock_irqrestore(&ev_queue->lock, flags); return; } @@ -474,12 +474,12 @@ void ib_uverbs_comp_handler(struct ib_cq *cq, void *cq_context) entry->desc.comp.cq_handle = cq->uobject->user_handle; entry->counter = &uobj->comp_events_reported; - list_add_tail(&entry->list, &file->event_list); + list_add_tail(&entry->list, &ev_queue->event_list); list_add_tail(&entry->obj_list, &uobj->comp_list); - spin_unlock_irqrestore(&file->lock, flags); + spin_unlock_irqrestore(&ev_queue->lock, flags); - wake_up_interruptible(&file->poll_wait); - kill_fasync(&file->async_queue, SIGIO, POLL_IN); + wake_up_interruptible(&ev_queue->poll_wait); + kill_fasync(&ev_queue->async_queue, SIGIO, POLL_IN); } static void ib_uverbs_async_handler(struct ib_uverbs_file *file, @@ -490,15 +490,15 @@ static void ib_uverbs_async_handler(struct ib_uverbs_file *file, struct ib_uverbs_event *entry; unsigned long flags; - spin_lock_irqsave(&file->async_file->ev_file.lock, flags); - if (file->async_file->ev_file.is_closed) { - spin_unlock_irqrestore(&file->async_file->ev_file.lock, flags); + spin_lock_irqsave(&file->async_file->ev_queue.lock, flags); + if (file->async_file->ev_queue.is_closed) { + spin_unlock_irqrestore(&file->async_file->ev_queue.lock, flags); return; } entry = kmalloc(sizeof *entry, GFP_ATOMIC); if (!entry) { - spin_unlock_irqrestore(&file->async_file->ev_file.lock, flags); + spin_unlock_irqrestore(&file->async_file->ev_queue.lock, flags); return; } @@ -507,13 +507,13 @@ static void ib_uverbs_async_handler(struct ib_uverbs_file *file, entry->desc.async.reserved = 0; entry->counter = counter; - list_add_tail(&entry->list, &file->async_file->ev_file.event_list); + list_add_tail(&entry->list, &file->async_file->ev_queue.event_list); if (obj_list) list_add_tail(&entry->obj_list, obj_list); - spin_unlock_irqrestore(&file->async_file->ev_file.lock, flags); + spin_unlock_irqrestore(&file->async_file->ev_queue.lock, flags); - wake_up_interruptible(&file->async_file->ev_file.poll_wait); - kill_fasync(&file->async_file->ev_file.async_queue, SIGIO, POLL_IN); + wake_up_interruptible(&file->async_file->ev_queue.poll_wait); + kill_fasync(&file->async_file->ev_queue.async_queue, SIGIO, POLL_IN); } void ib_uverbs_cq_event_handler(struct ib_event *event, void *context_ptr) @@ -580,13 +580,13 @@ void ib_uverbs_free_async_event_file(struct ib_uverbs_file *file) file->async_file = NULL; } -void ib_uverbs_init_event_file(struct ib_uverbs_event_file *ev_file) +void ib_uverbs_init_event_queue(struct ib_uverbs_event_queue *ev_queue) { - spin_lock_init(&ev_file->lock); - INIT_LIST_HEAD(&ev_file->event_list); - init_waitqueue_head(&ev_file->poll_wait); - ev_file->is_closed = 0; - ev_file->async_queue = NULL; + spin_lock_init(&ev_queue->lock); + INIT_LIST_HEAD(&ev_queue->event_list); + init_waitqueue_head(&ev_queue->poll_wait); + ev_queue->is_closed = 0; + ev_queue->async_queue = NULL; } struct file *ib_uverbs_alloc_async_event_file(struct ib_uverbs_file *uverbs_file, @@ -600,7 +600,7 @@ struct file *ib_uverbs_alloc_async_event_file(struct ib_uverbs_file *uverbs_file if (!ev_file) return ERR_PTR(-ENOMEM); - ib_uverbs_init_event_file(&ev_file->ev_file); + ib_uverbs_init_event_queue(&ev_file->ev_queue); ev_file->uverbs_file = uverbs_file; kref_get(&ev_file->uverbs_file->ref); kref_init(&ev_file->ref); @@ -1186,9 +1186,9 @@ static void ib_uverbs_free_hw_resources(struct ib_uverbs_device *uverbs_dev, uverbs_events_file_list, struct ib_uverbs_async_event_file, list); - spin_lock_irq(&event_file->ev_file.lock); - event_file->ev_file.is_closed = 1; - spin_unlock_irq(&event_file->ev_file.lock); + spin_lock_irq(&event_file->ev_queue.lock); + event_file->ev_queue.is_closed = 1; + spin_unlock_irq(&event_file->ev_queue.lock); list_del(&event_file->list); ib_unregister_event_handler( @@ -1196,8 +1196,8 @@ static void ib_uverbs_free_hw_resources(struct ib_uverbs_device *uverbs_dev, event_file->uverbs_file->event_handler.device = NULL; - wake_up_interruptible(&event_file->ev_file.poll_wait); - kill_fasync(&event_file->ev_file.async_queue, SIGIO, POLL_IN); + wake_up_interruptible(&event_file->ev_queue.poll_wait); + kill_fasync(&event_file->ev_queue.async_queue, SIGIO, POLL_IN); } mutex_unlock(&uverbs_dev->lists_mutex); } diff --git a/drivers/infiniband/core/uverbs_std_types.c b/drivers/infiniband/core/uverbs_std_types.c index 7f26af5ea066..e3338b19d6a2 100644 --- a/drivers/infiniband/core/uverbs_std_types.c +++ b/drivers/infiniband/core/uverbs_std_types.c @@ -138,17 +138,17 @@ int uverbs_free_cq(struct ib_uobject *uobject, enum rdma_remove_reason why) { struct ib_cq *cq = uobject->object; - struct ib_uverbs_event_file *ev_file = cq->cq_context; + struct ib_uverbs_event_queue *ev_queue = cq->cq_context; struct ib_ucq_object *ucq = container_of(uobject, struct ib_ucq_object, uobject); int ret; ret = ib_destroy_cq(cq); if (!ret || why != RDMA_REMOVE_DESTROY) - ib_uverbs_release_ucq(uobject->context->ufile, ev_file ? - container_of(ev_file, + ib_uverbs_release_ucq(uobject->context->ufile, ev_queue ? + container_of(ev_queue, struct ib_uverbs_completion_event_file, - ev_file) : NULL, + ev_queue) : NULL, ucq); return ret; } @@ -196,15 +196,15 @@ int uverbs_hot_unplug_completion_event_file(struct ib_uobject_file *uobj_file, struct ib_uverbs_completion_event_file *comp_event_file = container_of(uobj_file, struct ib_uverbs_completion_event_file, uobj_file); - struct ib_uverbs_event_file *event_file = &comp_event_file->ev_file; + struct ib_uverbs_event_queue *event_queue = &comp_event_file->ev_queue; - spin_lock_irq(&event_file->lock); - event_file->is_closed = 1; - spin_unlock_irq(&event_file->lock); + spin_lock_irq(&event_queue->lock); + event_queue->is_closed = 1; + spin_unlock_irq(&event_queue->lock); if (why == RDMA_REMOVE_DRIVER_REMOVE) { - wake_up_interruptible(&event_file->poll_wait); - kill_fasync(&event_file->async_queue, SIGIO, POLL_IN); + wake_up_interruptible(&event_queue->poll_wait); + kill_fasync(&event_queue->async_queue, SIGIO, POLL_IN); } return 0; }; -- 2.20.1