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ram: Move last_req_rb to RAMState

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It was on MigrationState when it is only used inside ram.c for
postcopy.  Problem is that we need to access it without being able to
pass it RAMState directly.

Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
This commit is contained in:
Juan Quintela 2017-03-14 13:48:42 +01:00
parent 9edabd4de6
commit 68a098f386
3 changed files with 5 additions and 5 deletions
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2
include/migration/migration.h
View file

@ -189,8 +189,6 @@ struct MigrationState
/* Queue of outstanding page requests from the destination */
QemuMutex src_page_req_mutex;
QSIMPLEQ_HEAD(src_page_requests, MigrationSrcPageRequest) src_page_requests;
/* The RAMBlock used in the last src_page_request */
RAMBlock *last_req_rb;
/* The semaphore is used to notify COLO thread that failover is finished */
QemuSemaphore colo_exit_sem;

1
migration/migration.c
View file

@ -1126,7 +1126,6 @@ MigrationState *migrate_init(const MigrationParams *params)
s->postcopy_after_devices = false;
s->postcopy_requests = 0;
s->migration_thread_running = false;
s->last_req_rb = NULL;
error_free(s->error);
s->error = NULL;

7
migration/ram.c
View file

@ -204,6 +204,8 @@ struct RAMState {
QemuMutex bitmap_mutex;
/* Ram Bitmap protected by RCU */
RAMBitmap *ram_bitmap;
/* The RAMBlock used in the last src_page_requests */
RAMBlock *last_req_rb;
};
typedef struct RAMState RAMState;
@ -1226,12 +1228,13 @@ int ram_save_queue_pages(MigrationState *ms, const char *rbname,
ram_addr_t start, ram_addr_t len)
{
RAMBlock *ramblock;
RAMState *rs = &ram_state;
ms->postcopy_requests++;
rcu_read_lock();
if (!rbname) {
/* Reuse last RAMBlock */
ramblock = ms->last_req_rb;
ramblock = rs->last_req_rb;
if (!ramblock) {
/*
@ -1249,7 +1252,7 @@ int ram_save_queue_pages(MigrationState *ms, const char *rbname,
error_report("ram_save_queue_pages no block '%s'", rbname);
goto err;
}
ms->last_req_rb = ramblock;
rs->last_req_rb = ramblock;
}
trace_ram_save_queue_pages(ramblock->idstr, start, len);
if (start+len > ramblock->used_length) {