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authorPaolo Bonzini <pbonzini@redhat.com>2016-07-04 19:10:01 +0200
committerKevin Wolf <kwolf@redhat.com>2016-07-13 13:26:02 +0200
commit0b8b8753e4d94901627b3e86431230f2319215c4 (patch)
treef258eafcb1b3ad4fc50434de2ba4e622de9fc353 /block
parent7e70cdba9f220bef3f3481c663c066c2b80469aa (diff)
downloadqemu-arm-0b8b8753e4d94901627b3e86431230f2319215c4.tar.gz
coroutine: move entry argument to qemu_coroutine_create
In practice the entry argument is always known at creation time, and it is confusing that sometimes qemu_coroutine_enter is used with a non-NULL argument to re-enter a coroutine (this happens in block/sheepdog.c and tests/test-coroutine.c). So pass the opaque value at creation time, for consistency with e.g. aio_bh_new. Mostly done with the following semantic patch: @ entry1 @ expression entry, arg, co; @@ - co = qemu_coroutine_create(entry); + co = qemu_coroutine_create(entry, arg); ... - qemu_coroutine_enter(co, arg); + qemu_coroutine_enter(co); @ entry2 @ expression entry, arg; identifier co; @@ - Coroutine *co = qemu_coroutine_create(entry); + Coroutine *co = qemu_coroutine_create(entry, arg); ... - qemu_coroutine_enter(co, arg); + qemu_coroutine_enter(co); @ entry3 @ expression entry, arg; @@ - qemu_coroutine_enter(qemu_coroutine_create(entry), arg); + qemu_coroutine_enter(qemu_coroutine_create(entry, arg)); @ reentry @ expression co; @@ - qemu_coroutine_enter(co, NULL); + qemu_coroutine_enter(co); except for the aforementioned few places where the semantic patch stumbled (as expected) and for test_co_queue, which would otherwise produce an uninitialized variable warning. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Fam Zheng <famz@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Diffstat (limited to 'block')
-rw-r--r--block/backup.c4
-rw-r--r--block/blkdebug.c4
-rwxr-xr-xblock/blkreplay.c2
-rw-r--r--block/block-backend.c8
-rw-r--r--block/commit.c4
-rw-r--r--block/gluster.c2
-rw-r--r--block/io.c45
-rw-r--r--block/iscsi.c4
-rw-r--r--block/linux-aio.c2
-rw-r--r--block/mirror.c6
-rw-r--r--block/nbd-client.c6
-rw-r--r--block/nfs.c2
-rw-r--r--block/qcow.c4
-rw-r--r--block/qcow2.c4
-rw-r--r--block/qed.c4
-rw-r--r--block/sheepdog.c14
-rw-r--r--block/ssh.c2
-rw-r--r--block/stream.c4
-rw-r--r--block/vmdk.c4
19 files changed, 63 insertions, 62 deletions
diff --git a/block/backup.c b/block/backup.c
index dce66142f3..2c0532314f 100644
--- a/block/backup.c
+++ b/block/backup.c
@@ -576,9 +576,9 @@ void backup_start(const char *job_id, BlockDriverState *bs,
bdrv_op_block_all(target, job->common.blocker);
job->common.len = len;
- job->common.co = qemu_coroutine_create(backup_run);
+ job->common.co = qemu_coroutine_create(backup_run, job);
block_job_txn_add_job(txn, &job->common);
- qemu_coroutine_enter(job->common.co, job);
+ qemu_coroutine_enter(job->common.co);
return;
error:
diff --git a/block/blkdebug.c b/block/blkdebug.c
index bbaa33fdd8..fb29283f80 100644
--- a/block/blkdebug.c
+++ b/block/blkdebug.c
@@ -621,7 +621,7 @@ static int blkdebug_debug_resume(BlockDriverState *bs, const char *tag)
QLIST_FOREACH_SAFE(r, &s->suspended_reqs, next, next) {
if (!strcmp(r->tag, tag)) {
- qemu_coroutine_enter(r->co, NULL);
+ qemu_coroutine_enter(r->co);
return 0;
}
}
@@ -647,7 +647,7 @@ static int blkdebug_debug_remove_breakpoint(BlockDriverState *bs,
}
QLIST_FOREACH_SAFE(r, &s->suspended_reqs, next, r_next) {
if (!strcmp(r->tag, tag)) {
- qemu_coroutine_enter(r->co, NULL);
+ qemu_coroutine_enter(r->co);
ret = 0;
}
}
diff --git a/block/blkreplay.c b/block/blkreplay.c
index 70650e4be1..3368c8c98d 100755
--- a/block/blkreplay.c
+++ b/block/blkreplay.c
@@ -65,7 +65,7 @@ static int64_t blkreplay_getlength(BlockDriverState *bs)
static void blkreplay_bh_cb(void *opaque)
{
Request *req = opaque;
- qemu_coroutine_enter(req->co, NULL);
+ qemu_coroutine_enter(req->co);
qemu_bh_delete(req->bh);
g_free(req);
}
diff --git a/block/block-backend.c b/block/block-backend.c
index a862f6577b..0d7b801107 100644
--- a/block/block-backend.c
+++ b/block/block-backend.c
@@ -836,8 +836,8 @@ static int blk_prw(BlockBackend *blk, int64_t offset, uint8_t *buf,
.ret = NOT_DONE,
};
- co = qemu_coroutine_create(co_entry);
- qemu_coroutine_enter(co, &rwco);
+ co = qemu_coroutine_create(co_entry, &rwco);
+ qemu_coroutine_enter(co);
aio_context = blk_get_aio_context(blk);
while (rwco.ret == NOT_DONE) {
@@ -950,8 +950,8 @@ static BlockAIOCB *blk_aio_prwv(BlockBackend *blk, int64_t offset, int bytes,
acb->bh = NULL;
acb->has_returned = false;
- co = qemu_coroutine_create(co_entry);
- qemu_coroutine_enter(co, acb);
+ co = qemu_coroutine_create(co_entry, acb);
+ qemu_coroutine_enter(co);
acb->has_returned = true;
if (acb->rwco.ret != NOT_DONE) {
diff --git a/block/commit.c b/block/commit.c
index 23368fa65b..8b534d7c95 100644
--- a/block/commit.c
+++ b/block/commit.c
@@ -278,10 +278,10 @@ void commit_start(const char *job_id, BlockDriverState *bs,
s->backing_file_str = g_strdup(backing_file_str);
s->on_error = on_error;
- s->common.co = qemu_coroutine_create(commit_run);
+ s->common.co = qemu_coroutine_create(commit_run, s);
trace_commit_start(bs, base, top, s, s->common.co, opaque);
- qemu_coroutine_enter(s->common.co, s);
+ qemu_coroutine_enter(s->common.co);
}
diff --git a/block/gluster.c b/block/gluster.c
index 16f7778a50..406c1e6357 100644
--- a/block/gluster.c
+++ b/block/gluster.c
@@ -233,7 +233,7 @@ static void qemu_gluster_complete_aio(void *opaque)
qemu_bh_delete(acb->bh);
acb->bh = NULL;
- qemu_coroutine_enter(acb->coroutine, NULL);
+ qemu_coroutine_enter(acb->coroutine);
}
/*
diff --git a/block/io.c b/block/io.c
index 708690898f..2887394633 100644
--- a/block/io.c
+++ b/block/io.c
@@ -195,7 +195,7 @@ static void bdrv_co_drain_bh_cb(void *opaque)
qemu_bh_delete(data->bh);
bdrv_drain_poll(data->bs);
data->done = true;
- qemu_coroutine_enter(co, NULL);
+ qemu_coroutine_enter(co);
}
static void coroutine_fn bdrv_co_yield_to_drain(BlockDriverState *bs)
@@ -599,8 +599,8 @@ static int bdrv_prwv_co(BdrvChild *child, int64_t offset,
} else {
AioContext *aio_context = bdrv_get_aio_context(child->bs);
- co = qemu_coroutine_create(bdrv_rw_co_entry);
- qemu_coroutine_enter(co, &rwco);
+ co = qemu_coroutine_create(bdrv_rw_co_entry, &rwco);
+ qemu_coroutine_enter(co);
while (rwco.ret == NOT_DONE) {
aio_poll(aio_context, true);
}
@@ -799,7 +799,7 @@ static void bdrv_co_io_em_complete(void *opaque, int ret)
CoroutineIOCompletion *co = opaque;
co->ret = ret;
- qemu_coroutine_enter(co->coroutine, NULL);
+ qemu_coroutine_enter(co->coroutine);
}
static int coroutine_fn bdrv_driver_preadv(BlockDriverState *bs,
@@ -1752,8 +1752,9 @@ int64_t bdrv_get_block_status_above(BlockDriverState *bs,
} else {
AioContext *aio_context = bdrv_get_aio_context(bs);
- co = qemu_coroutine_create(bdrv_get_block_status_above_co_entry);
- qemu_coroutine_enter(co, &data);
+ co = qemu_coroutine_create(bdrv_get_block_status_above_co_entry,
+ &data);
+ qemu_coroutine_enter(co);
while (!data.done) {
aio_poll(aio_context, true);
}
@@ -1901,9 +1902,9 @@ bdrv_rw_vmstate(BlockDriverState *bs, QEMUIOVector *qiov, int64_t pos,
.is_read = is_read,
.ret = -EINPROGRESS,
};
- Coroutine *co = qemu_coroutine_create(bdrv_co_rw_vmstate_entry);
+ Coroutine *co = qemu_coroutine_create(bdrv_co_rw_vmstate_entry, &data);
- qemu_coroutine_enter(co, &data);
+ qemu_coroutine_enter(co);
while (data.ret == -EINPROGRESS) {
aio_poll(bdrv_get_aio_context(bs), true);
}
@@ -2113,8 +2114,8 @@ static BlockAIOCB *bdrv_co_aio_rw_vector(BdrvChild *child,
acb->req.flags = flags;
acb->is_write = is_write;
- co = qemu_coroutine_create(bdrv_co_do_rw);
- qemu_coroutine_enter(co, acb);
+ co = qemu_coroutine_create(bdrv_co_do_rw, acb);
+ qemu_coroutine_enter(co);
bdrv_co_maybe_schedule_bh(acb);
return &acb->common;
@@ -2141,8 +2142,8 @@ BlockAIOCB *bdrv_aio_flush(BlockDriverState *bs,
acb->need_bh = true;
acb->req.error = -EINPROGRESS;
- co = qemu_coroutine_create(bdrv_aio_flush_co_entry);
- qemu_coroutine_enter(co, acb);
+ co = qemu_coroutine_create(bdrv_aio_flush_co_entry, acb);
+ qemu_coroutine_enter(co);
bdrv_co_maybe_schedule_bh(acb);
return &acb->common;
@@ -2171,8 +2172,8 @@ BlockAIOCB *bdrv_aio_discard(BlockDriverState *bs,
acb->req.error = -EINPROGRESS;
acb->req.sector = sector_num;
acb->req.nb_sectors = nb_sectors;
- co = qemu_coroutine_create(bdrv_aio_discard_co_entry);
- qemu_coroutine_enter(co, acb);
+ co = qemu_coroutine_create(bdrv_aio_discard_co_entry, acb);
+ qemu_coroutine_enter(co);
bdrv_co_maybe_schedule_bh(acb);
return &acb->common;
@@ -2313,8 +2314,8 @@ int bdrv_flush(BlockDriverState *bs)
} else {
AioContext *aio_context = bdrv_get_aio_context(bs);
- co = qemu_coroutine_create(bdrv_flush_co_entry);
- qemu_coroutine_enter(co, &flush_co);
+ co = qemu_coroutine_create(bdrv_flush_co_entry, &flush_co);
+ qemu_coroutine_enter(co);
while (flush_co.ret == NOT_DONE) {
aio_poll(aio_context, true);
}
@@ -2442,8 +2443,8 @@ int bdrv_discard(BlockDriverState *bs, int64_t sector_num, int nb_sectors)
} else {
AioContext *aio_context = bdrv_get_aio_context(bs);
- co = qemu_coroutine_create(bdrv_discard_co_entry);
- qemu_coroutine_enter(co, &rwco);
+ co = qemu_coroutine_create(bdrv_discard_co_entry, &rwco);
+ qemu_coroutine_enter(co);
while (rwco.ret == NOT_DONE) {
aio_poll(aio_context, true);
}
@@ -2505,9 +2506,9 @@ int bdrv_ioctl(BlockDriverState *bs, unsigned long int req, void *buf)
/* Fast-path if already in coroutine context */
bdrv_co_ioctl_entry(&data);
} else {
- Coroutine *co = qemu_coroutine_create(bdrv_co_ioctl_entry);
+ Coroutine *co = qemu_coroutine_create(bdrv_co_ioctl_entry, &data);
- qemu_coroutine_enter(co, &data);
+ qemu_coroutine_enter(co);
while (data.ret == -EINPROGRESS) {
aio_poll(bdrv_get_aio_context(bs), true);
}
@@ -2535,8 +2536,8 @@ BlockAIOCB *bdrv_aio_ioctl(BlockDriverState *bs,
acb->req.error = -EINPROGRESS;
acb->req.req = req;
acb->req.buf = buf;
- co = qemu_coroutine_create(bdrv_co_aio_ioctl_entry);
- qemu_coroutine_enter(co, acb);
+ co = qemu_coroutine_create(bdrv_co_aio_ioctl_entry, acb);
+ qemu_coroutine_enter(co);
bdrv_co_maybe_schedule_bh(acb);
return &acb->common;
diff --git a/block/iscsi.c b/block/iscsi.c
index 434cb37107..cf1e9e7f66 100644
--- a/block/iscsi.c
+++ b/block/iscsi.c
@@ -152,7 +152,7 @@ static void iscsi_co_generic_bh_cb(void *opaque)
struct IscsiTask *iTask = opaque;
iTask->complete = 1;
qemu_bh_delete(iTask->bh);
- qemu_coroutine_enter(iTask->co, NULL);
+ qemu_coroutine_enter(iTask->co);
}
static void iscsi_retry_timer_expired(void *opaque)
@@ -160,7 +160,7 @@ static void iscsi_retry_timer_expired(void *opaque)
struct IscsiTask *iTask = opaque;
iTask->complete = 1;
if (iTask->co) {
- qemu_coroutine_enter(iTask->co, NULL);
+ qemu_coroutine_enter(iTask->co);
}
}
diff --git a/block/linux-aio.c b/block/linux-aio.c
index 7df8651581..5c104bd3cd 100644
--- a/block/linux-aio.c
+++ b/block/linux-aio.c
@@ -94,7 +94,7 @@ static void qemu_laio_process_completion(struct qemu_laiocb *laiocb)
laiocb->ret = ret;
if (laiocb->co) {
- qemu_coroutine_enter(laiocb->co, NULL);
+ qemu_coroutine_enter(laiocb->co);
} else {
laiocb->common.cb(laiocb->common.opaque, ret);
qemu_aio_unref(laiocb);
diff --git a/block/mirror.c b/block/mirror.c
index 705fbc0052..71e5ad4377 100644
--- a/block/mirror.c
+++ b/block/mirror.c
@@ -121,7 +121,7 @@ static void mirror_iteration_done(MirrorOp *op, int ret)
g_free(op);
if (s->waiting_for_io) {
- qemu_coroutine_enter(s->common.co, NULL);
+ qemu_coroutine_enter(s->common.co);
}
}
@@ -901,9 +901,9 @@ static void mirror_start_job(const char *job_id, BlockDriverState *bs,
bdrv_op_block_all(target, s->common.blocker);
- s->common.co = qemu_coroutine_create(mirror_run);
+ s->common.co = qemu_coroutine_create(mirror_run, s);
trace_mirror_start(bs, s, s->common.co, opaque);
- qemu_coroutine_enter(s->common.co, s);
+ qemu_coroutine_enter(s->common.co);
}
void mirror_start(const char *job_id, BlockDriverState *bs,
diff --git a/block/nbd-client.c b/block/nbd-client.c
index 420bce89f3..4cc408d206 100644
--- a/block/nbd-client.c
+++ b/block/nbd-client.c
@@ -38,7 +38,7 @@ static void nbd_recv_coroutines_enter_all(NbdClientSession *s)
for (i = 0; i < MAX_NBD_REQUESTS; i++) {
if (s->recv_coroutine[i]) {
- qemu_coroutine_enter(s->recv_coroutine[i], NULL);
+ qemu_coroutine_enter(s->recv_coroutine[i]);
}
}
}
@@ -99,7 +99,7 @@ static void nbd_reply_ready(void *opaque)
}
if (s->recv_coroutine[i]) {
- qemu_coroutine_enter(s->recv_coroutine[i], NULL);
+ qemu_coroutine_enter(s->recv_coroutine[i]);
return;
}
@@ -111,7 +111,7 @@ static void nbd_restart_write(void *opaque)
{
BlockDriverState *bs = opaque;
- qemu_coroutine_enter(nbd_get_client_session(bs)->send_coroutine, NULL);
+ qemu_coroutine_enter(nbd_get_client_session(bs)->send_coroutine);
}
static int nbd_co_send_request(BlockDriverState *bs,
diff --git a/block/nfs.c b/block/nfs.c
index 15d6832c4c..8602a44211 100644
--- a/block/nfs.c
+++ b/block/nfs.c
@@ -104,7 +104,7 @@ static void nfs_co_generic_bh_cb(void *opaque)
NFSRPC *task = opaque;
task->complete = 1;
qemu_bh_delete(task->bh);
- qemu_coroutine_enter(task->co, NULL);
+ qemu_coroutine_enter(task->co);
}
static void
diff --git a/block/qcow.c b/block/qcow.c
index ac849bd47c..0c7b75bc76 100644
--- a/block/qcow.c
+++ b/block/qcow.c
@@ -948,8 +948,8 @@ static int qcow_write(BlockDriverState *bs, int64_t sector_num,
.nb_sectors = nb_sectors,
.ret = -EINPROGRESS,
};
- co = qemu_coroutine_create(qcow_write_co_entry);
- qemu_coroutine_enter(co, &data);
+ co = qemu_coroutine_create(qcow_write_co_entry, &data);
+ qemu_coroutine_enter(co);
while (data.ret == -EINPROGRESS) {
aio_poll(aio_context, true);
}
diff --git a/block/qcow2.c b/block/qcow2.c
index a5ea19b0b6..a6bca735e5 100644
--- a/block/qcow2.c
+++ b/block/qcow2.c
@@ -2570,8 +2570,8 @@ static int qcow2_write(BlockDriverState *bs, int64_t sector_num,
.nb_sectors = nb_sectors,
.ret = -EINPROGRESS,
};
- co = qemu_coroutine_create(qcow2_write_co_entry);
- qemu_coroutine_enter(co, &data);
+ co = qemu_coroutine_create(qcow2_write_co_entry, &data);
+ qemu_coroutine_enter(co);
while (data.ret == -EINPROGRESS) {
aio_poll(aio_context, true);
}
diff --git a/block/qed.c b/block/qed.c
index f619d82c6e..426f3cb447 100644
--- a/block/qed.c
+++ b/block/qed.c
@@ -708,7 +708,7 @@ static void qed_is_allocated_cb(void *opaque, int ret, uint64_t offset, size_t l
}
if (cb->co) {
- qemu_coroutine_enter(cb->co, NULL);
+ qemu_coroutine_enter(cb->co);
}
}
@@ -1425,7 +1425,7 @@ static void coroutine_fn qed_co_pwrite_zeroes_cb(void *opaque, int ret)
cb->done = true;
cb->ret = ret;
if (cb->co) {
- qemu_coroutine_enter(cb->co, NULL);
+ qemu_coroutine_enter(cb->co);
}
}
diff --git a/block/sheepdog.c b/block/sheepdog.c
index ef5d044ab9..e739c56f08 100644
--- a/block/sheepdog.c
+++ b/block/sheepdog.c
@@ -495,7 +495,7 @@ static inline void free_aio_req(BDRVSheepdogState *s, AIOReq *aio_req)
static void coroutine_fn sd_finish_aiocb(SheepdogAIOCB *acb)
{
- qemu_coroutine_enter(acb->coroutine, NULL);
+ qemu_coroutine_enter(acb->coroutine);
qemu_aio_unref(acb);
}
@@ -636,7 +636,7 @@ static void restart_co_req(void *opaque)
{
Coroutine *co = opaque;
- qemu_coroutine_enter(co, NULL);
+ qemu_coroutine_enter(co);
}
typedef struct SheepdogReqCo {
@@ -726,8 +726,8 @@ static int do_req(int sockfd, AioContext *aio_context, SheepdogReq *hdr,
if (qemu_in_coroutine()) {
do_co_req(&srco);
} else {
- co = qemu_coroutine_create(do_co_req);
- qemu_coroutine_enter(co, &srco);
+ co = qemu_coroutine_create(do_co_req, &srco);
+ qemu_coroutine_enter(co);
while (!srco.finished) {
aio_poll(aio_context, true);
}
@@ -925,17 +925,17 @@ static void co_read_response(void *opaque)
BDRVSheepdogState *s = opaque;
if (!s->co_recv) {
- s->co_recv = qemu_coroutine_create(aio_read_response);
+ s->co_recv = qemu_coroutine_create(aio_read_response, opaque);
}
- qemu_coroutine_enter(s->co_recv, opaque);
+ qemu_coroutine_enter(s->co_recv);
}
static void co_write_request(void *opaque)
{
BDRVSheepdogState *s = opaque;
- qemu_coroutine_enter(s->co_send, NULL);
+ qemu_coroutine_enter(s->co_send);
}
/*
diff --git a/block/ssh.c b/block/ssh.c
index 06928ed939..bcbb0e4223 100644
--- a/block/ssh.c
+++ b/block/ssh.c
@@ -777,7 +777,7 @@ static void restart_coroutine(void *opaque)
DPRINTF("co=%p", co);
- qemu_coroutine_enter(co, NULL);
+ qemu_coroutine_enter(co);
}
static coroutine_fn void set_fd_handler(BDRVSSHState *s, BlockDriverState *bs)
diff --git a/block/stream.c b/block/stream.c
index 54c8cd8f57..2e7c6547d2 100644
--- a/block/stream.c
+++ b/block/stream.c
@@ -235,7 +235,7 @@ void stream_start(const char *job_id, BlockDriverState *bs,
s->backing_file_str = g_strdup(backing_file_str);
s->on_error = on_error;
- s->common.co = qemu_coroutine_create(stream_run);
+ s->common.co = qemu_coroutine_create(stream_run, s);
trace_stream_start(bs, base, s, s->common.co, opaque);
- qemu_coroutine_enter(s->common.co, s);
+ qemu_coroutine_enter(s->common.co);
}
diff --git a/block/vmdk.c b/block/vmdk.c
index d73f4314ba..c9914f718f 100644
--- a/block/vmdk.c
+++ b/block/vmdk.c
@@ -1686,8 +1686,8 @@ static int vmdk_write_compressed(BlockDriverState *bs,
.nb_sectors = nb_sectors,
.ret = -EINPROGRESS,
};
- co = qemu_coroutine_create(vmdk_co_write_compressed);
- qemu_coroutine_enter(co, &data);
+ co = qemu_coroutine_create(vmdk_co_write_compressed, &data);
+ qemu_coroutine_enter(co);
while (data.ret == -EINPROGRESS) {
aio_poll(aio_context, true);
}