From: Brendan King <[email protected]> This is in preparation for the next commit, which makes use of the list.
Signed-off-by: Brendan King <[email protected]> Signed-off-by: Matt Coster <[email protected]> Cc: [email protected] --- drivers/gpu/drm/imagination/pvr_context.c | 14 ++++++++++++++ drivers/gpu/drm/imagination/pvr_context.h | 3 +++ drivers/gpu/drm/imagination/pvr_device.h | 10 ++++++++++ drivers/gpu/drm/imagination/pvr_drv.c | 3 +++ 4 files changed, 30 insertions(+) diff --git a/drivers/gpu/drm/imagination/pvr_context.c b/drivers/gpu/drm/imagination/pvr_context.c index eded5e955cc0..255c93582734 100644 --- a/drivers/gpu/drm/imagination/pvr_context.c +++ b/drivers/gpu/drm/imagination/pvr_context.c @@ -17,10 +17,14 @@ #include <drm/drm_auth.h> #include <drm/drm_managed.h> + +#include <linux/bug.h> #include <linux/errno.h> #include <linux/kernel.h> +#include <linux/list.h> #include <linux/sched.h> #include <linux/slab.h> +#include <linux/spinlock.h> #include <linux/string.h> #include <linux/types.h> #include <linux/xarray.h> @@ -354,6 +358,10 @@ int pvr_context_create(struct pvr_file *pvr_file, struct drm_pvr_ioctl_create_co return err; } + spin_lock(&pvr_dev->ctx_list_lock); + list_add_tail(&ctx->file_link, &pvr_file->contexts); + spin_unlock(&pvr_dev->ctx_list_lock); + return 0; err_destroy_fw_obj: @@ -380,6 +388,11 @@ pvr_context_release(struct kref *ref_count) container_of(ref_count, struct pvr_context, ref_count); struct pvr_device *pvr_dev = ctx->pvr_dev; + WARN_ON(in_interrupt()); + spin_lock(&pvr_dev->ctx_list_lock); + list_del(&ctx->file_link); + spin_unlock(&pvr_dev->ctx_list_lock); + xa_erase(&pvr_dev->ctx_ids, ctx->ctx_id); pvr_context_destroy_queues(ctx); pvr_fw_object_destroy(ctx->fw_obj); @@ -451,6 +464,7 @@ void pvr_destroy_contexts_for_file(struct pvr_file *pvr_file) void pvr_context_device_init(struct pvr_device *pvr_dev) { xa_init_flags(&pvr_dev->ctx_ids, XA_FLAGS_ALLOC1); + spin_lock_init(&pvr_dev->ctx_list_lock); } /** diff --git a/drivers/gpu/drm/imagination/pvr_context.h b/drivers/gpu/drm/imagination/pvr_context.h index 0c7b97dfa6ba..a5b0a82a54a1 100644 --- a/drivers/gpu/drm/imagination/pvr_context.h +++ b/drivers/gpu/drm/imagination/pvr_context.h @@ -85,6 +85,9 @@ struct pvr_context { /** @compute: Transfer queue. */ struct pvr_queue *transfer; } queues; + + /** @file_link: pvr_file PVR context list link. */ + struct list_head file_link; }; static __always_inline struct pvr_queue * diff --git a/drivers/gpu/drm/imagination/pvr_device.h b/drivers/gpu/drm/imagination/pvr_device.h index ecdd5767d8ef..b1fbf9ccf19f 100644 --- a/drivers/gpu/drm/imagination/pvr_device.h +++ b/drivers/gpu/drm/imagination/pvr_device.h @@ -23,6 +23,7 @@ #include <linux/kernel.h> #include <linux/math.h> #include <linux/mutex.h> +#include <linux/spinlock_types.h> #include <linux/timer.h> #include <linux/types.h> #include <linux/wait.h> @@ -293,6 +294,12 @@ struct pvr_device { /** @sched_wq: Workqueue for schedulers. */ struct workqueue_struct *sched_wq; + + /** + * @ctx_list_lock: Lock to be held when accessing the context list in + * struct pvr_file. + */ + spinlock_t ctx_list_lock; }; /** @@ -344,6 +351,9 @@ struct pvr_file { * This array is used to allocate handles returned to userspace. */ struct xarray vm_ctx_handles; + + /** @contexts: PVR context list. */ + struct list_head contexts; }; /** diff --git a/drivers/gpu/drm/imagination/pvr_drv.c b/drivers/gpu/drm/imagination/pvr_drv.c index 1a0cb7aa9cea..fb17196e05f4 100644 --- a/drivers/gpu/drm/imagination/pvr_drv.c +++ b/drivers/gpu/drm/imagination/pvr_drv.c @@ -28,6 +28,7 @@ #include <linux/export.h> #include <linux/fs.h> #include <linux/kernel.h> +#include <linux/list.h> #include <linux/mod_devicetable.h> #include <linux/module.h> #include <linux/moduleparam.h> @@ -1326,6 +1327,8 @@ pvr_drm_driver_open(struct drm_device *drm_dev, struct drm_file *file) */ pvr_file->pvr_dev = pvr_dev; + INIT_LIST_HEAD(&pvr_file->contexts); + xa_init_flags(&pvr_file->ctx_handles, XA_FLAGS_ALLOC1); xa_init_flags(&pvr_file->free_list_handles, XA_FLAGS_ALLOC1); xa_init_flags(&pvr_file->hwrt_handles, XA_FLAGS_ALLOC1); -- 2.46.0
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