[Qemu-devel] [PATCH 1/4] migration: Remove unused functions

[Thomas Huth <thuth@linux.vnet.ibm.com>]

dup_mig_bytes_transferred(), skipped_mig_bytes_transferred(),
migrate_rdma_pin_all(), qsb_clone() and qsb_set_length()
are completely unused and thus can be deleted.

Signed-off-by: Thomas Huth <thuth@linux.vnet.ibm.com>
Cc: Juan Quintela <quintela@redhat.com>
Cc: Amit Shah <amit.shah@redhat.com>
---
 arch_init.c                   |   10 -------
 include/migration/migration.h |    3 --
 include/migration/qemu-file.h |    2 -
 migration/migration.c         |    9 -------
 migration/qemu-file-buf.c     |   53 -----------------------------------------
 5 files changed, 0 insertions(+), 77 deletions(-)

diff --git a/arch_init.c b/arch_init.c
index 89c8fa4..ad5ce28 100644
--- a/arch_init.c
+++ b/arch_init.c
@@ -249,21 +249,11 @@ static void acct_clear(void)
     memset(&acct_info, 0, sizeof(acct_info));
 }
 
-uint64_t dup_mig_bytes_transferred(void)
-{
-    return acct_info.dup_pages * TARGET_PAGE_SIZE;
-}
-
 uint64_t dup_mig_pages_transferred(void)
 {
     return acct_info.dup_pages;
 }
 
-uint64_t skipped_mig_bytes_transferred(void)
-{
-    return acct_info.skipped_pages * TARGET_PAGE_SIZE;
-}
-
 uint64_t skipped_mig_pages_transferred(void)
 {
     return acct_info.skipped_pages;
diff --git a/include/migration/migration.h b/include/migration/migration.h
index f37348b..7f6cdaa 100644
--- a/include/migration/migration.h
+++ b/include/migration/migration.h
@@ -115,9 +115,7 @@ void free_xbzrle_decoded_buf(void);
 
 void acct_update_position(QEMUFile *f, size_t size, bool zero);
 
-uint64_t dup_mig_bytes_transferred(void);
 uint64_t dup_mig_pages_transferred(void);
-uint64_t skipped_mig_bytes_transferred(void);
 uint64_t skipped_mig_pages_transferred(void);
 uint64_t norm_mig_bytes_transferred(void);
 uint64_t norm_mig_pages_transferred(void);
@@ -143,7 +141,6 @@ void migrate_add_blocker(Error *reason);
  */
 void migrate_del_blocker(Error *reason);
 
-bool migrate_rdma_pin_all(void);
 bool migrate_zero_blocks(void);
 
 bool migrate_auto_converge(void);
diff --git a/include/migration/qemu-file.h b/include/migration/qemu-file.h
index a923cec..45d7f71 100644
--- a/include/migration/qemu-file.h
+++ b/include/migration/qemu-file.h
@@ -133,9 +133,7 @@ bool qemu_file_mode_is_not_valid(const char *mode);
 bool qemu_file_is_writable(QEMUFile *f);
 
 QEMUSizedBuffer *qsb_create(const uint8_t *buffer, size_t len);
-QEMUSizedBuffer *qsb_clone(const QEMUSizedBuffer *);
 void qsb_free(QEMUSizedBuffer *);
-size_t qsb_set_length(QEMUSizedBuffer *qsb, size_t length);
 size_t qsb_get_length(const QEMUSizedBuffer *qsb);
 ssize_t qsb_get_buffer(const QEMUSizedBuffer *, off_t start, size_t count,
                        uint8_t *buf);
diff --git a/migration/migration.c b/migration/migration.c
index b3adbc6..6f1a490 100644
--- a/migration/migration.c
+++ b/migration/migration.c
@@ -540,15 +540,6 @@ void qmp_migrate_set_downtime(double value, Error **errp)
     max_downtime = (uint64_t)value;
 }
 
-bool migrate_rdma_pin_all(void)
-{
-    MigrationState *s;
-
-    s = migrate_get_current();
-
-    return s->enabled_capabilities[MIGRATION_CAPABILITY_RDMA_PIN_ALL];
-}
-
 bool migrate_auto_converge(void)
 {
     MigrationState *s;
diff --git a/migration/qemu-file-buf.c b/migration/qemu-file-buf.c
index e97e0bd..3b79c09 100644
--- a/migration/qemu-file-buf.c
+++ b/migration/qemu-file-buf.c
@@ -124,28 +124,6 @@ size_t qsb_get_length(const QEMUSizedBuffer *qsb)
 }
 
 /**
- * Set the length of the buffer; the primary usage of this
- * function is to truncate the number of used bytes in the buffer.
- * The size will not be extended beyond the current number of
- * allocated bytes in the QEMUSizedBuffer.
- *
- * @qsb: A QEMUSizedBuffer
- * @new_len: The new length of bytes in the buffer
- *
- * Returns the number of bytes the buffer was truncated or extended
- * to.
- */
-size_t qsb_set_length(QEMUSizedBuffer *qsb, size_t new_len)
-{
-    if (new_len <= qsb->size) {
-        qsb->used = new_len;
-    } else {
-        qsb->used = qsb->size;
-    }
-    return qsb->used;
-}
-
-/**
  * Get the iovec that holds the data for a given position @pos.
  *
  * @qsb: A QEMUSizedBuffer
@@ -361,37 +339,6 @@ ssize_t qsb_write_at(QEMUSizedBuffer *qsb, const uint8_t *source,
     return count;
 }
 
-/**
- * Create a deep copy of the given QEMUSizedBuffer.
- *
- * @qsb: A QEMUSizedBuffer
- *
- * Returns a clone of @qsb or NULL on allocation failure
- */
-QEMUSizedBuffer *qsb_clone(const QEMUSizedBuffer *qsb)
-{
-    QEMUSizedBuffer *out = qsb_create(NULL, qsb_get_length(qsb));
-    size_t i;
-    ssize_t res;
-    off_t pos = 0;
-
-    if (!out) {
-        return NULL;
-    }
-
-    for (i = 0; i < qsb->n_iov; i++) {
-        res =  qsb_write_at(out, qsb->iov[i].iov_base,
-                            pos, qsb->iov[i].iov_len);
-        if (res < 0) {
-            qsb_free(out);
-            return NULL;
-        }
-        pos += res;
-    }
-
-    return out;
-}
-
 typedef struct QEMUBuffer {
     QEMUSizedBuffer *qsb;
     QEMUFile *file;
-- 
1.7.1