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165faf1)
Introduce FIO_NULLIO as a way to control that from the io engine.
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
.version = FIO_IOOPS_VERSION,
.init = fio_cpuio_init,
.setup = fio_cpuio_setup,
.version = FIO_IOOPS_VERSION,
.init = fio_cpuio_init,
.setup = fio_cpuio_setup,
+ .flags = FIO_CPUIO | FIO_NULLIO,
};
static void fio_init fio_cpuio_register(void)
};
static void fio_init fio_cpuio_register(void)
.getevents = fio_null_getevents,
.event = fio_null_event,
.cleanup = fio_null_cleanup,
.getevents = fio_null_getevents,
.event = fio_null_event,
.cleanup = fio_null_cleanup,
+ .flags = FIO_SYNCIO | FIO_NULLIO,
};
static void fio_init fio_null_register(void)
};
static void fio_init fio_null_register(void)
- if (td->filetype != FIO_TYPE_FILE)
+ if (td->filetype != FIO_TYPE_FILE || (td->io_ops->flags & FIO_NULLIO))
return 0;
if (stat(f->file_name, &st) == -1)
return 0;
if (stat(f->file_name, &st) == -1)
if (td->io_ops->flags & FIO_NETIO)
return 0;
if (td->io_ops->flags & FIO_NETIO)
return 0;
- if (td->odirect)
- flags |= OS_O_DIRECT;
- if (td->sync_io)
- flags |= O_SYNC;
- if (td_write(td) || td_rw(td)) {
- flags |= O_RDWR;
+ /*
+ * we need a valid file descriptor, but don't create a real file.
+ * lets just dup stdout, seems like a sensible approach.
+ */
+ if (td->io_ops->flags & FIO_NULLIO)
+ f->fd = dup(STDOUT_FILENO);
+ else {
+ if (td->odirect)
+ flags |= OS_O_DIRECT;
+ if (td->sync_io)
+ flags |= O_SYNC;
+
+ if (td_write(td) || td_rw(td)) {
+ flags |= O_RDWR;
- if (td->filetype == FIO_TYPE_FILE) {
- if (!td->overwrite)
- flags |= O_TRUNC;
+ if (td->filetype == FIO_TYPE_FILE) {
+ if (!td->overwrite)
+ flags |= O_TRUNC;
- f->fd = open(f->file_name, flags, 0600);
- } else {
- if (td->filetype == FIO_TYPE_CHAR)
- flags |= O_RDWR;
- else
- flags |= O_RDONLY;
+ f->fd = open(f->file_name, flags, 0600);
+ } else {
+ if (td->filetype == FIO_TYPE_CHAR)
+ flags |= O_RDWR;
+ else
+ flags |= O_RDONLY;
- f->fd = open(f->file_name, flags);
+ f->fd = open(f->file_name, flags);
+ }
FIO_MMAPIO = 1 << 2,
FIO_RAWIO = 1 << 3,
FIO_NETIO = 1 << 4,
FIO_MMAPIO = 1 << 2,
FIO_RAWIO = 1 << 3,
FIO_NETIO = 1 << 4,
- if (!td->do_disk_util || (td->io_ops->flags & FIO_NETIO))
+ if (!td->do_disk_util || (td->io_ops->flags & (FIO_NETIO | FIO_NULLIO)))