64 lines
2.1 KiB
Diff
64 lines
2.1 KiB
Diff
From f9d1e6a041de70170ddc978c6c5d4e8d2b23fe58 Mon Sep 17 00:00:00 2001
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From: Mateusz Polrola <mateuszx.potrola@intel.com>
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Date: Thu, 20 Sep 2018 14:09:19 +0200
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Subject: [PATCH 515/550] hyper_dmabuf/virtio: Process ioreq according to
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bitmap
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Vhm will record pending ioreqs of the vhm client into a bitmap,
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then vhm client (like hyper_dmabuf) can process the ioreq directly
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according to the bitmap.
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Signed-off-by: Mateusz Polrola <mateuszx.potrola@intel.com>
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---
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.../virtio/hyper_dmabuf_virtio_be_drv.c | 16 ++++++++--------
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1 file changed, 8 insertions(+), 8 deletions(-)
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diff --git a/drivers/dma-buf/hyper_dmabuf/virtio/hyper_dmabuf_virtio_be_drv.c b/drivers/dma-buf/hyper_dmabuf/virtio/hyper_dmabuf_virtio_be_drv.c
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index 400c6e702005..67c79683407b 100644
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--- a/drivers/dma-buf/hyper_dmabuf/virtio/hyper_dmabuf_virtio_be_drv.c
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+++ b/drivers/dma-buf/hyper_dmabuf/virtio/hyper_dmabuf_virtio_be_drv.c
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@@ -161,15 +161,12 @@ static void virtio_be_handle_vq_kick(
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/*
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* Received new buffer in virtqueue
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*/
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-static int virtio_be_handle_kick(int client_id, int req_cnt)
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+static int virtio_be_handle_kick(int client_id, unsigned long *ioreqs_map)
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{
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int val = -1;
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struct vhm_request *req;
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struct virtio_fe_info *fe_info;
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- int i;
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-
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- if (unlikely(req_cnt <= 0))
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- return -EINVAL;
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+ int vcpu;
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fe_info = virtio_fe_find(client_id);
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if (fe_info == NULL) {
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@@ -177,8 +174,11 @@ static int virtio_be_handle_kick(int client_id, int req_cnt)
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return -EINVAL;
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}
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- for (i = 0; i < fe_info->max_vcpu; ++i) {
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- req = &fe_info->req_buf[i];
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+ while (1) {
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+ vcpu = find_first_bit(ioreqs_map, fe_info->max_vcpu);
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+ if (vcpu == fe_info->max_vcpu)
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+ break;
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+ req = &fe_info->req_buf[vcpu];
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if (atomic_read(&req->processed) == REQ_STATE_PROCESSING &&
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req->client == fe_info->client_id) {
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if (req->reqs.pio_request.direction == REQUEST_READ)
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@@ -188,7 +188,7 @@ static int virtio_be_handle_kick(int client_id, int req_cnt)
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smp_mb();
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atomic_set(&req->processed, REQ_STATE_COMPLETE);
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- acrn_ioreq_complete_request(fe_info->client_id, i);
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+ acrn_ioreq_complete_request(fe_info->client_id, vcpu);
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}
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}
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--
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2.19.1
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