Add qemu 2.4.0

Change-Id: Ic99cbad4b61f8b127b7dc74d04576c0bcbaaf4f5
Signed-off-by: Yang Zhang <yang.z.zhang@intel.com>

1 files changed, 107 insertions, 0 deletions

diff --git a/qemu/hw/9pfs/virtio-9p-coth.h b/qemu/hw/9pfs/virtio-9p-coth.h
new file mode 100644
index 000000000..4f51b250d
--- /dev/null
+++ b/qemu/hw/9pfs/virtio-9p-coth.h
@@ -0,0 +1,107 @@
+/*
+ * Virtio 9p backend
+ *
+ * Copyright IBM, Corp. 2010
+ *
+ * Authors:
+ *  Harsh Prateek Bora <harsh@linux.vnet.ibm.com>
+ *  Venkateswararao Jujjuri(JV) <jvrao@linux.vnet.ibm.com>
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2.  See
+ * the COPYING file in the top-level directory.
+ *
+ */
+
+#ifndef _QEMU_VIRTIO_9P_COTH_H
+#define _QEMU_VIRTIO_9P_COTH_H
+
+#include "qemu/thread.h"
+#include "block/coroutine.h"
+#include "virtio-9p.h"
+#include <glib.h>
+
+typedef struct V9fsThPool {
+    EventNotifier e;
+
+    GThreadPool *pool;
+    GAsyncQueue *completed;
+} V9fsThPool;
+
+/*
+ * we want to use bottom half because we want to make sure the below
+ * sequence of events.
+ *
+ *   1. Yield the coroutine in the QEMU thread.
+ *   2. Submit the coroutine to a worker thread.
+ *   3. Enter the coroutine in the worker thread.
+ * we cannot swap step 1 and 2, because that would imply worker thread
+ * can enter coroutine while step1 is still running
+ */
+#define v9fs_co_run_in_worker(code_block)                               \
+    do {                                                                \
+        QEMUBH *co_bh;                                                  \
+        co_bh = qemu_bh_new(co_run_in_worker_bh,                        \
+                            qemu_coroutine_self());                     \
+        qemu_bh_schedule(co_bh);                                        \
+        /*                                                              \
+         * yield in qemu thread and re-enter back                       \
+         * in glib worker thread                                        \
+         */                                                             \
+        qemu_coroutine_yield();                                         \
+        qemu_bh_delete(co_bh);                                          \
+        code_block;                                                     \
+        /* re-enter back to qemu thread */                              \
+        qemu_coroutine_yield();                                         \
+    } while (0)
+
+extern void co_run_in_worker_bh(void *);
+extern int v9fs_init_worker_threads(void);
+extern int v9fs_co_readlink(V9fsPDU *, V9fsPath *, V9fsString *);
+extern int v9fs_co_readdir_r(V9fsPDU *, V9fsFidState *,
+                           struct dirent *, struct dirent **result);
+extern off_t v9fs_co_telldir(V9fsPDU *, V9fsFidState *);
+extern void v9fs_co_seekdir(V9fsPDU *, V9fsFidState *, off_t);
+extern void v9fs_co_rewinddir(V9fsPDU *, V9fsFidState *);
+extern int v9fs_co_statfs(V9fsPDU *, V9fsPath *, struct statfs *);
+extern int v9fs_co_lstat(V9fsPDU *, V9fsPath *, struct stat *);
+extern int v9fs_co_chmod(V9fsPDU *, V9fsPath *, mode_t);
+extern int v9fs_co_utimensat(V9fsPDU *, V9fsPath *, struct timespec [2]);
+extern int v9fs_co_chown(V9fsPDU *, V9fsPath *, uid_t, gid_t);
+extern int v9fs_co_truncate(V9fsPDU *, V9fsPath *, off_t);
+extern int v9fs_co_llistxattr(V9fsPDU *, V9fsPath *, void *, size_t);
+extern int v9fs_co_lgetxattr(V9fsPDU *, V9fsPath *,
+                             V9fsString *, void *, size_t);
+extern int v9fs_co_mknod(V9fsPDU *, V9fsFidState *, V9fsString *, uid_t,
+                         gid_t, dev_t, mode_t, struct stat *);
+extern int v9fs_co_mkdir(V9fsPDU *, V9fsFidState *, V9fsString *,
+                         mode_t, uid_t, gid_t, struct stat *);
+extern int v9fs_co_remove(V9fsPDU *, V9fsPath *);
+extern int v9fs_co_rename(V9fsPDU *, V9fsPath *, V9fsPath *);
+extern int v9fs_co_unlinkat(V9fsPDU *, V9fsPath *, V9fsString *, int flags);
+extern int v9fs_co_renameat(V9fsPDU *, V9fsPath *, V9fsString *,
+                            V9fsPath *, V9fsString *);
+extern int v9fs_co_fstat(V9fsPDU *, V9fsFidState *, struct stat *);
+extern int v9fs_co_opendir(V9fsPDU *, V9fsFidState *);
+extern int v9fs_co_open(V9fsPDU *, V9fsFidState *, int);
+extern int v9fs_co_open2(V9fsPDU *, V9fsFidState *, V9fsString *,
+                         gid_t, int, int, struct stat *);
+extern int v9fs_co_lsetxattr(V9fsPDU *, V9fsPath *, V9fsString *,
+                             void *, size_t, int);
+extern int v9fs_co_lremovexattr(V9fsPDU *, V9fsPath *, V9fsString *);
+extern int v9fs_co_closedir(V9fsPDU *, V9fsFidOpenState *);
+extern int v9fs_co_close(V9fsPDU *, V9fsFidOpenState *);
+extern int v9fs_co_fsync(V9fsPDU *, V9fsFidState *, int);
+extern int v9fs_co_symlink(V9fsPDU *, V9fsFidState *, V9fsString *,
+                           const char *, gid_t, struct stat *);
+extern int v9fs_co_link(V9fsPDU *, V9fsFidState *,
+                        V9fsFidState *, V9fsString *);
+extern int v9fs_co_pwritev(V9fsPDU *, V9fsFidState *,
+                           struct iovec *, int, int64_t);
+extern int v9fs_co_preadv(V9fsPDU *, V9fsFidState *,
+                          struct iovec *, int, int64_t);
+extern int v9fs_co_name_to_path(V9fsPDU *, V9fsPath *,
+                                const char *, V9fsPath *);
+extern int v9fs_co_st_gen(V9fsPDU *pdu, V9fsPath *path, mode_t,
+                          V9fsStatDotl *v9stat);
+
+#endif