search for: anon_inode_getfd

...minchan at kernel.org> --- fs/anon_inodes.c | 6 ++++++ include/linux/anon_inodes.h | 1 + 2 files changed, 7 insertions(+) diff --git a/fs/anon_inodes.c b/fs/anon_inodes.c index 80ef38c73e5a..1d51f96acdd9 100644 --- a/fs/anon_inodes.c +++ b/fs/anon_inodes.c @@ -162,6 +162,12 @@ int anon_inode_getfd(const char *name, const struct file_operations *fops, } EXPORT_SYMBOL_GPL(anon_inode_getfd); +struct inode *anon_inode_new(void) +{ + return alloc_anon_inode(anon_inode_mnt->mnt_sb); +} +EXPORT_SYMBOL_GPL(anon_inode_new); + static int __init anon_inode_init(void) { anon_inode_mnt = kern_...

...-- fs/anon_inodes.c | 6 ++++++ include/linux/anon_inodes.h | 1 + 2 files changed, 7 insertions(+) diff --git a/fs/anon_inodes.c b/fs/anon_inodes.c index 80ef38c..1d51f96 100644 --- a/fs/anon_inodes.c +++ b/fs/anon_inodes.c @@ -162,6 +162,12 @@ err_put_unused_fd: } EXPORT_SYMBOL_GPL(anon_inode_getfd); +struct inode *anon_inode_new(void) +{ + return alloc_anon_inode(anon_inode_mnt->mnt_sb); +} +EXPORT_SYMBOL_GPL(anon_inode_new); + static int __init anon_inode_init(void) { anon_inode_mnt = kern_mount(&anon_inode_fs_type); diff --git a/include/linux/anon_inodes.h b/include/linux/anon...

From: Gioh Kim <gurugio at hanmail.net> Hello, This series try to enable migration of non-LRU pages, such as driver's page. My ARM-based platform occured severe fragmentation problem after long-term (several days) test. Sometimes even order-3 page allocation failed. It has memory size 512MB ~ 1024MB. 30% ~ 40% memory is consumed for graphic processing and 20~30 memory is reserved for

From: Gioh Kim <gurugio at hanmail.net> Hello, This series try to enable migration of non-LRU pages, such as driver's page. My ARM-based platform occured severe fragmentation problem after long-term (several days) test. Sometimes even order-3 page allocation failed. It has memory size 512MB ~ 1024MB. 30% ~ 40% memory is consumed for graphic processing and 20~30 memory is reserved for

Hi, this work is based on the virtio_wl driver in the ChromeOS kernel by Zach Reizner, currently at: https://chromium.googlesource.com/chromiumos/third_party/kernel/+/chromeos-4.4/drivers/virtio/virtio_wl.c There's one feature missing currently, which is letting clients write directly to the host part of a resource, so the extra copy in TRANSFER_TO_HOST isn't needed. Have pushed the

Hello, This series try to enable migration of non-LRU pages, such as driver's page. My ARM-based platform occured severe fragmentation problem after long-term (several days) test. Sometimes even order-3 page allocation failed. It has memory size 512MB ~ 1024MB. 30% ~ 40% memory is consumed for graphic processing and 20~30 memory is reserved for zram. I found that many pages of GPU driver

Hello, This series try to enable migration of non-LRU pages, such as driver's page. My ARM-based platform occured severe fragmentation problem after long-term (several days) test. Sometimes even order-3 page allocation failed. It has memory size 512MB ~ 1024MB. 30% ~ 40% memory is consumed for graphic processing and 20~30 memory is reserved for zram. I found that many pages of GPU driver

..._gpu_winsrv_conn *conn; + int ret; + + conn = kzalloc(sizeof(*conn), GFP_KERNEL); + if (!conn) + return -ENOMEM; + + conn->vgdev = vgdev; + conn->drm_file = file; + spin_lock_init(&conn->lock); + INIT_LIST_HEAD(&conn->cmdq); + init_waitqueue_head(&conn->cmdwq); + + ret = anon_inode_getfd("[virtgpu_winsrv]", &winsrv_fops, conn, + O_CLOEXEC | O_RDWR); + if (ret < 0) + goto free_conn; + + conn->fd = ret; + + ret = virtio_gpu_cmd_winsrv_connect(vgdev, conn->fd); + if (ret < 0) + goto close_fd; + + spin_lock(&vfpriv->winsrv_lock); + list_add_t...

..._gpu_winsrv_conn *conn; + int ret; + + conn = kzalloc(sizeof(*conn), GFP_KERNEL); + if (!conn) + return -ENOMEM; + + conn->vgdev = vgdev; + conn->drm_file = file; + spin_lock_init(&conn->lock); + INIT_LIST_HEAD(&conn->cmdq); + init_waitqueue_head(&conn->cmdwq); + + ret = anon_inode_getfd("[virtgpu_winsrv]", &winsrv_fops, conn, + O_CLOEXEC | O_RDWR); + if (ret < 0) + goto free_conn; + + conn->fd = ret; + + ret = virtio_gpu_cmd_winsrv_connect(vgdev, conn->fd); + if (ret < 0) + goto close_fd; + + spin_lock(&vfpriv->winsrv_lock); + list_add_t...

..._GPU_F_WINSRV)) + return -ENODEV; + + conn = kzalloc(sizeof(*conn), GFP_KERNEL); + if (!conn) + return -ENOMEM; + + conn->vgdev = vgdev; + conn->drm_file = file; + spin_lock_init(&conn->lock); + INIT_LIST_HEAD(&conn->cmdq); + init_waitqueue_head(&conn->cmdwq); + + ret = anon_inode_getfd("[virtgpu_winsrv]", &winsrv_fops, conn, + O_CLOEXEC | O_RDWR); + if (ret < 0) + goto free_conn; + + conn->fd = ret; + + ret = virtio_gpu_cmd_winsrv_connect(vgdev, conn->fd); + if (ret < 0) + goto close_fd; + + spin_lock(&vfpriv->winsrv_lock); + list_add_t...

From: Gioh Kim <gurugio at hanmail.net> Hello, This series try to enable migration of non-LRU pages, such as driver's page. My ARM-based platform occured severe fragmentation problem after long-term (several days) test. Sometimes even order-3 page allocation failed. It has memory size 512MB ~ 1024MB. 30% ~ 40% memory is consumed for graphic processing and 20~30 memory is reserved for

From: Gioh Kim <gurugio at hanmail.net> Hello, This series try to enable migration of non-LRU pages, such as driver's page. My ARM-based platform occured severe fragmentation problem after long-term (several days) test. Sometimes even order-3 page allocation failed. It has memory size 512MB ~ 1024MB. 30% ~ 40% memory is consumed for graphic processing and 20~30 memory is reserved for

..._gpu_winsrv_conn *conn; + int ret; + + conn = kzalloc(sizeof(*conn), GFP_KERNEL); + if (!conn) + return -ENOMEM; + + conn->vgdev = vgdev; + conn->drm_file = file; + spin_lock_init(&conn->lock); + INIT_LIST_HEAD(&conn->cmdq); + init_waitqueue_head(&conn->cmdwq); + + ret = anon_inode_getfd("[virtgpu_winsrv]", &winsrv_fops, conn, + O_CLOEXEC | O_RDWR); + if (ret < 0) + goto free_conn; + + conn->fd = ret; + + ret = virtio_gpu_cmd_winsrv_connect(vgdev, conn->fd); + if (ret < 0) + goto close_fd; + + spin_lock(&vfpriv->winsrv_lock); + list_add_t...

..._gpu_winsrv_conn *conn; + int ret; + + conn = kzalloc(sizeof(*conn), GFP_KERNEL); + if (!conn) + return -ENOMEM; + + conn->vgdev = vgdev; + conn->drm_file = file; + spin_lock_init(&conn->lock); + INIT_LIST_HEAD(&conn->cmdq); + init_waitqueue_head(&conn->cmdwq); + + ret = anon_inode_getfd("[virtgpu_winsrv]", &winsrv_fops, conn, + O_CLOEXEC | O_RDWR); + if (ret < 0) + goto free_conn; + + conn->fd = ret; + + ret = virtio_gpu_cmd_winsrv_connect(vgdev, conn->fd); + if (ret < 0) + goto close_fd; + + spin_lock(&vfpriv->winsrv_lock); + list_add_t...

For virtualization, we've developed virtio_ring for efficient communication. This would also work well for userspace-kernel communication, particularly for things like the tun device. By using the same ABI, we can join guests to the host kernel trivially. These patches are fairly alpha; I've seen some network stalls I have to track down and there are some fixmes. Comments welcome!

For virtualization, we've developed virtio_ring for efficient communication. This would also work well for userspace-kernel communication, particularly for things like the tun device. By using the same ABI, we can join guests to the host kernel trivially. These patches are fairly alpha; I've seen some network stalls I have to track down and there are some fixmes. Comments welcome!

Recently, I got many reports about perfermance degradation in embedded system(Android mobile phone, webOS TV and so on) and failed to fork easily. The problem was fragmentation caused by zram and GPU driver pages. Their pages cannot be migrated so compaction cannot work well, either so reclaimer ends up shrinking all of working set pages. It made system very slow and even to fail to fork easily.

Recently, I got many reports about perfermance degradation in embedded system(Android mobile phone, webOS TV and so on) and failed to fork easily. The problem was fragmentation caused by zram and GPU driver pages. Their pages cannot be migrated so compaction cannot work well, either so reclaimer ends up shrinking all of working set pages. It made system very slow and even to fail to fork easily.