From 2ae7f165c0b022a8ed1732f8ab2c11b2c173146e Mon Sep 17 00:00:00 2001 From: Matthew Wilcox Date: Tue, 30 Oct 2018 09:53:52 -0700 Subject: drm/virtio: Use IDAs more efficiently 0-based IDAs are more efficient than any other base. Convert the 1-based IDAs to be 0-based. Signed-off-by: Matthew Wilcox Link: http://patchwork.freedesktop.org/patch/msgid/20181030165352.13065-2-willy@infradead.org Signed-off-by: Gerd Hoffmann --- drivers/gpu/drm/virtio/virtgpu_kms.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) (limited to 'drivers/gpu/drm/virtio/virtgpu_kms.c') diff --git a/drivers/gpu/drm/virtio/virtgpu_kms.c b/drivers/gpu/drm/virtio/virtgpu_kms.c index bf609dcae224..8118f10fde4a 100644 --- a/drivers/gpu/drm/virtio/virtgpu_kms.c +++ b/drivers/gpu/drm/virtio/virtgpu_kms.c @@ -55,10 +55,11 @@ static void virtio_gpu_config_changed_work_func(struct work_struct *work) static int virtio_gpu_context_create(struct virtio_gpu_device *vgdev, uint32_t nlen, const char *name) { - int handle = ida_alloc_min(&vgdev->ctx_id_ida, 1, GFP_KERNEL); + int handle = ida_alloc(&vgdev->ctx_id_ida, GFP_KERNEL); if (handle < 0) return handle; + handle += 1; virtio_gpu_cmd_context_create(vgdev, handle, nlen, name); return handle; } @@ -67,7 +68,7 @@ static void virtio_gpu_context_destroy(struct virtio_gpu_device *vgdev, uint32_t ctx_id) { virtio_gpu_cmd_context_destroy(vgdev, ctx_id); - ida_free(&vgdev->ctx_id_ida, ctx_id); + ida_free(&vgdev->ctx_id_ida, ctx_id - 1); } static void virtio_gpu_init_vq(struct virtio_gpu_queue *vgvq, -- cgit v1.2.3