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[PULL 08/25] migration: rename rate limiting fields in QEMUFile
From: |
Dr. David Alan Gilbert (git) |
Subject: |
[PULL 08/25] migration: rename rate limiting fields in QEMUFile |
Date: |
Thu, 23 Jun 2022 17:53:37 +0100 |
From: Daniel P. Berrangé <berrange@redhat.com>
This renames the following QEMUFile fields
* bytes_xfer -> rate_limit_used
* xfer_limit -> rate_limit_max
The intent is to make it clear that 'bytes_xfer' is specifically related
to rate limiting of data and applies to data queued, which need not have
been transferred on the wire yet if a flush hasn't taken place.
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
---
migration/qemu-file.c | 30 +++++++++++++++++++-----------
1 file changed, 19 insertions(+), 11 deletions(-)
diff --git a/migration/qemu-file.c b/migration/qemu-file.c
index 1479cddad9..03f0b13a55 100644
--- a/migration/qemu-file.c
+++ b/migration/qemu-file.c
@@ -39,8 +39,16 @@ struct QEMUFile {
const QEMUFileHooks *hooks;
void *opaque;
- int64_t bytes_xfer;
- int64_t xfer_limit;
+ /*
+ * Maximum amount of data in bytes to transfer during one
+ * rate limiting time window
+ */
+ int64_t rate_limit_max;
+ /*
+ * Total amount of data in bytes queued for transfer
+ * during this rate limiting time window
+ */
+ int64_t rate_limit_used;
int64_t pos; /* start of buffer when writing, end of buffer
when reading */
@@ -304,7 +312,7 @@ size_t ram_control_save_page(QEMUFile *f, ram_addr_t
block_offset,
int ret = f->hooks->save_page(f, f->opaque, block_offset,
offset, size, bytes_sent);
if (ret != RAM_SAVE_CONTROL_NOT_SUPP) {
- f->bytes_xfer += size;
+ f->rate_limit_used += size;
}
if (ret != RAM_SAVE_CONTROL_DELAYED &&
@@ -457,7 +465,7 @@ void qemu_put_buffer_async(QEMUFile *f, const uint8_t *buf,
size_t size,
return;
}
- f->bytes_xfer += size;
+ f->rate_limit_used += size;
add_to_iovec(f, buf, size, may_free);
}
@@ -475,7 +483,7 @@ void qemu_put_buffer(QEMUFile *f, const uint8_t *buf,
size_t size)
l = size;
}
memcpy(f->buf + f->buf_index, buf, l);
- f->bytes_xfer += l;
+ f->rate_limit_used += l;
add_buf_to_iovec(f, l);
if (qemu_file_get_error(f)) {
break;
@@ -492,7 +500,7 @@ void qemu_put_byte(QEMUFile *f, int v)
}
f->buf[f->buf_index] = v;
- f->bytes_xfer++;
+ f->rate_limit_used++;
add_buf_to_iovec(f, 1);
}
@@ -674,7 +682,7 @@ int qemu_file_rate_limit(QEMUFile *f)
if (qemu_file_get_error(f)) {
return 1;
}
- if (f->xfer_limit > 0 && f->bytes_xfer > f->xfer_limit) {
+ if (f->rate_limit_max > 0 && f->rate_limit_used > f->rate_limit_max) {
return 1;
}
return 0;
@@ -682,22 +690,22 @@ int qemu_file_rate_limit(QEMUFile *f)
int64_t qemu_file_get_rate_limit(QEMUFile *f)
{
- return f->xfer_limit;
+ return f->rate_limit_max;
}
void qemu_file_set_rate_limit(QEMUFile *f, int64_t limit)
{
- f->xfer_limit = limit;
+ f->rate_limit_max = limit;
}
void qemu_file_reset_rate_limit(QEMUFile *f)
{
- f->bytes_xfer = 0;
+ f->rate_limit_used = 0;
}
void qemu_file_update_transfer(QEMUFile *f, int64_t len)
{
- f->bytes_xfer += len;
+ f->rate_limit_used += len;
}
void qemu_put_be16(QEMUFile *f, unsigned int v)
--
2.36.1
- [PULL 11/25] migration: rename qemu_update_position to qemu_file_credit_transfer, (continued)
- [PULL 11/25] migration: rename qemu_update_position to qemu_file_credit_transfer, Dr. David Alan Gilbert (git), 2022/06/23
- [PULL 04/25] migration: Change zero_copy_send from migration parameter to migration capability, Dr. David Alan Gilbert (git), 2022/06/23
- [PULL 15/25] migration: stop passing 'opaque' parameter to QEMUFile hooks, Dr. David Alan Gilbert (git), 2022/06/23
- [PULL 14/25] migration: convert savevm to use QIOChannelBlock for VMState, Dr. David Alan Gilbert (git), 2022/06/23
- [PULL 18/25] migration: remove unused QEMUFileGetFD typedef / qemu_get_fd method, Dr. David Alan Gilbert (git), 2022/06/23
- [PULL 17/25] migration: introduce new constructors for QEMUFile, Dr. David Alan Gilbert (git), 2022/06/23
- [PULL 21/25] migration: remove the QEMUFileOps 'close' callback, Dr. David Alan Gilbert (git), 2022/06/23
- [PULL 22/25] migration: remove the QEMUFileOps 'get_buffer' callback, Dr. David Alan Gilbert (git), 2022/06/23
- [PULL 24/25] migration: remove the QEMUFileOps 'get_return_path' callback, Dr. David Alan Gilbert (git), 2022/06/23
- [PULL 19/25] migration: remove the QEMUFileOps 'shut_down' callback, Dr. David Alan Gilbert (git), 2022/06/23
- [PULL 08/25] migration: rename rate limiting fields in QEMUFile,
Dr. David Alan Gilbert (git) <=
- [PULL 12/25] migration: rename qemu_file_update_transfer to qemu_file_acct_rate_limit, Dr. David Alan Gilbert (git), 2022/06/23
- [PULL 13/25] migration: introduce a QIOChannel impl for BlockDriverState VMState, Dr. David Alan Gilbert (git), 2022/06/23
- [PULL 16/25] migration: hardcode assumption that QEMUFile is backed with QIOChannel, Dr. David Alan Gilbert (git), 2022/06/23
- [PULL 20/25] migration: remove the QEMUFileOps 'set_blocking' callback, Dr. David Alan Gilbert (git), 2022/06/23
- [PULL 25/25] migration: remove the QEMUFileOps abstraction, Dr. David Alan Gilbert (git), 2022/06/23
- [PULL 23/25] migration: remove the QEMUFileOps 'writev_buffer' callback, Dr. David Alan Gilbert (git), 2022/06/23
- Re: [PULL 00/25] migration queue, Richard Henderson, 2022/06/23