qemu-kvm/kvm-multifd-remove-used-parameter-from-send_prepare-meth.patch

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From 5f53448092c944857a2b89138f22c5ab335d8250 Mon Sep 17 00:00:00 2001
From: Juan Quintela <quintela@redhat.com>
Date: Wed, 18 May 2022 02:52:23 -0300
Subject: [PATCH 05/37] multifd: remove used parameter from send_prepare()
method
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
RH-Author: Leonardo Brás <leobras@redhat.com>
RH-MergeRequest: 191: MSG_ZEROCOPY + Multifd @ rhel8.7
RH-Commit: [5/26] ad6360d19d65e8c332dcdc3d3234478639e03db8
RH-Bugzilla: 2072049
RH-Acked-by: Peter Xu <peterx@redhat.com>
RH-Acked-by: Daniel P. Berrangé <berrange@redhat.com>
RH-Acked-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
It is already there as p->pages->num.
Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
(cherry picked from commit 02fb81043ecee338e4aeb8f5be09a46325dc5e43)
Signed-off-by: Leonardo Bras <leobras@redhat.com>
---
migration/multifd-zlib.c | 7 +++----
migration/multifd-zstd.c | 7 +++----
migration/multifd.c | 9 +++------
migration/multifd.h | 2 +-
4 files changed, 10 insertions(+), 15 deletions(-)
diff --git a/migration/multifd-zlib.c b/migration/multifd-zlib.c
index f403d2f031..0c70a2dc78 100644
--- a/migration/multifd-zlib.c
+++ b/migration/multifd-zlib.c
@@ -96,10 +96,9 @@ static void zlib_send_cleanup(MultiFDSendParams *p, Error **errp)
* Returns 0 for success or -1 for error
*
* @p: Params for the channel that we are using
- * @used: number of pages used
* @errp: pointer to an error
*/
-static int zlib_send_prepare(MultiFDSendParams *p, uint32_t used, Error **errp)
+static int zlib_send_prepare(MultiFDSendParams *p, Error **errp)
{
struct iovec *iov = p->pages->iov;
struct zlib_data *z = p->data;
@@ -108,11 +107,11 @@ static int zlib_send_prepare(MultiFDSendParams *p, uint32_t used, Error **errp)
int ret;
uint32_t i;
- for (i = 0; i < used; i++) {
+ for (i = 0; i < p->pages->num; i++) {
uint32_t available = z->zbuff_len - out_size;
int flush = Z_NO_FLUSH;
- if (i == used - 1) {
+ if (i == p->pages->num - 1) {
flush = Z_SYNC_FLUSH;
}
diff --git a/migration/multifd-zstd.c b/migration/multifd-zstd.c
index 8d657f8860..466b370cad 100644
--- a/migration/multifd-zstd.c
+++ b/migration/multifd-zstd.c
@@ -109,10 +109,9 @@ static void zstd_send_cleanup(MultiFDSendParams *p, Error **errp)
* Returns 0 for success or -1 for error
*
* @p: Params for the channel that we are using
- * @used: number of pages used
* @errp: pointer to an error
*/
-static int zstd_send_prepare(MultiFDSendParams *p, uint32_t used, Error **errp)
+static int zstd_send_prepare(MultiFDSendParams *p, Error **errp)
{
struct iovec *iov = p->pages->iov;
struct zstd_data *z = p->data;
@@ -123,10 +122,10 @@ static int zstd_send_prepare(MultiFDSendParams *p, uint32_t used, Error **errp)
z->out.size = z->zbuff_len;
z->out.pos = 0;
- for (i = 0; i < used; i++) {
+ for (i = 0; i < p->pages->num; i++) {
ZSTD_EndDirective flush = ZSTD_e_continue;
- if (i == used - 1) {
+ if (i == p->pages->num - 1) {
flush = ZSTD_e_flush;
}
z->in.src = iov[i].iov_base;
diff --git a/migration/multifd.c b/migration/multifd.c
index ce7101cf9d..098ef8842c 100644
--- a/migration/multifd.c
+++ b/migration/multifd.c
@@ -82,13 +82,11 @@ static void nocomp_send_cleanup(MultiFDSendParams *p, Error **errp)
* Returns 0 for success or -1 for error
*
* @p: Params for the channel that we are using
- * @used: number of pages used
* @errp: pointer to an error
*/
-static int nocomp_send_prepare(MultiFDSendParams *p, uint32_t used,
- Error **errp)
+static int nocomp_send_prepare(MultiFDSendParams *p, Error **errp)
{
- p->next_packet_size = used * qemu_target_page_size();
+ p->next_packet_size = p->pages->num * qemu_target_page_size();
p->flags |= MULTIFD_FLAG_NOCOMP;
return 0;
}
@@ -654,8 +652,7 @@ static void *multifd_send_thread(void *opaque)
uint32_t flags = p->flags;
if (used) {
- ret = multifd_send_state->ops->send_prepare(p, used,
- &local_err);
+ ret = multifd_send_state->ops->send_prepare(p, &local_err);
if (ret != 0) {
qemu_mutex_unlock(&p->mutex);
break;
diff --git a/migration/multifd.h b/migration/multifd.h
index 86820dd028..7968cc5c20 100644
--- a/migration/multifd.h
+++ b/migration/multifd.h
@@ -159,7 +159,7 @@ typedef struct {
/* Cleanup for sending side */
void (*send_cleanup)(MultiFDSendParams *p, Error **errp);
/* Prepare the send packet */
- int (*send_prepare)(MultiFDSendParams *p, uint32_t used, Error **errp);
+ int (*send_prepare)(MultiFDSendParams *p, Error **errp);
/* Write the send packet */
int (*send_write)(MultiFDSendParams *p, uint32_t used, Error **errp);
/* Setup for receiving side */
--
2.35.3