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virtio-balloon: Avoid using the word 'report' when referring to free page hinting

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It can be confusing to have multiple features within the same driver that
are using the same verbage. As such this patch is creating a union of
free_page_report_cmd_id with free_page_hint_cmd_id so that we can clean-up
the userspace code a bit in terms of readability while maintaining the
functionality of legacy code.

Signed-off-by: Alexander Duyck <alexander.h.duyck@linux.intel.com>
Link: https://lore.kernel.org/r/20200415174318.13597.99753.stgit@localhost.localdomain
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Alexander Duyck 2020-04-15 10:44:08 -07:00 committed by Michael S. Tsirkin
parent dc39cbb4e8
commit 31ba514b2f
2 changed files with 10 additions and 3 deletions
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2
drivers/virtio/virtio_balloon.c
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@ -580,7 +580,7 @@ static u32 virtio_balloon_cmd_id_received(struct virtio_balloon *vb)
if (test_and_clear_bit(VIRTIO_BALLOON_CONFIG_READ_CMD_ID,
&vb->config_read_bitmap))
virtio_cread(vb->vdev, struct virtio_balloon_config,
free_page_report_cmd_id,
free_page_hint_cmd_id,
&vb->cmd_id_received_cache);
return vb->cmd_id_received_cache;

11
include/uapi/linux/virtio_balloon.h
View File

@ -48,8 +48,15 @@ struct virtio_balloon_config {
__u32 num_pages;
/* Number of pages we've actually got in balloon. */
__u32 actual;
/* Free page report command id, readonly by guest */
__u32 free_page_report_cmd_id;
/*
* Free page hint command id, readonly by guest.
* Was previously named free_page_report_cmd_id so we
* need to carry that name for legacy support.
*/
union {
__u32 free_page_hint_cmd_id;
__u32 free_page_report_cmd_id; /* deprecated */
};
/* Stores PAGE_POISON if page poisoning is in use */
__u32 poison_val;
};