migration: Remove non-multifd compression

The 'compress' migration capability enables the old compression code
which has shown issues over the years and is thought to be less stable
and tested than the more recent multifd-based compression. The old
compression code has been deprecated in 8.2 and now is time to remove
it.

Deprecation commit 864128df46 ("migration: Deprecate old compression
method").

Acked-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Signed-off-by: Fabiano Rosas <farosas@suse.de>

1 files changed, 0 insertions, 77 deletions

diff --git a/migration/ram-compress.h b/migration/ram-compress.h
deleted file mode 100644
index 0d89a2f55e..0000000000
--- a/migration/ram-compress.h
+++ /dev/null
@@ -1,77 +0,0 @@
-/*
- * QEMU System Emulator
- *
- * Copyright (c) 2003-2008 Fabrice Bellard
- * Copyright (c) 2011-2015 Red Hat Inc
- *
- * Authors:
- *  Juan Quintela <quintela@redhat.com>
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
- * THE SOFTWARE.
- */
-
-#ifndef QEMU_MIGRATION_COMPRESS_H
-#define QEMU_MIGRATION_COMPRESS_H
-
-#include "qemu-file.h"
-#include "qapi/qapi-types-migration.h"
-
-enum CompressResult {
-    RES_NONE = 0,
-    RES_ZEROPAGE = 1,
-    RES_COMPRESS = 2
-};
-typedef enum CompressResult CompressResult;
-
-struct CompressParam {
-    bool done;
-    bool quit;
-    bool trigger;
-    CompressResult result;
-    QEMUFile *file;
-    QemuMutex mutex;
-    QemuCond cond;
-    RAMBlock *block;
-    ram_addr_t offset;
-
-    /* internally used fields */
-    z_stream stream;
-    uint8_t *originbuf;
-};
-typedef struct CompressParam CompressParam;
-
-void compress_threads_save_cleanup(void);
-int compress_threads_save_setup(void);
-
-bool compress_page_with_multi_thread(RAMBlock *block, ram_addr_t offset,
-                                      int (send_queued_data(CompressParam *)));
-
-int wait_for_decompress_done(void);
-void compress_threads_load_cleanup(void);
-int compress_threads_load_setup(QEMUFile *f);
-void decompress_data_with_multi_threads(QEMUFile *f, void *host, int len);
-
-void populate_compress(MigrationInfo *info);
-uint64_t compress_ram_pages(void);
-void update_compress_thread_counts(const CompressParam *param, int bytes_xmit);
-void compress_update_rates(uint64_t page_count);
-int compress_send_queued_data(CompressParam *param);
-void compress_flush_data(void);
-
-#endif