> -----Original Message-----
> From: Lukas Straub <lukasstra...@web.de>
> Sent: Thursday, April 9, 2020 2:34 AM
> To: qemu-devel <qemu-devel@nongnu.org>
> Cc: Zhang, Chen <chen.zh...@intel.com>; Li Zhijian
> <lizhij...@cn.fujitsu.com>; Jason Wang <jasow...@redhat.com>; Marc-
> André Lureau <marcandre.lur...@redhat.com>; Paolo Bonzini
> <pbonz...@redhat.com>
> Subject: [PATCH 2/3] chardev/char.c: Use qemu_co_sleep_ns if in coroutine
>
> This will be needed in the next patch.
>
> Signed-off-by: Lukas Straub <lukasstra...@web.de>
Reviewed-by: Zhang Chen <chen.zh...@intel.com>
> ---
> chardev/char.c | 7 ++++++-
> 1 file changed, 6 insertions(+), 1 deletion(-)
>
> diff --git a/chardev/char.c b/chardev/char.c index 04075389bf..51ad0dc6b3
> 100644
> --- a/chardev/char.c
> +++ b/chardev/char.c
> @@ -38,6 +38,7 @@
> #include "qemu/module.h"
> #include "qemu/option.h"
> #include "qemu/id.h"
> +#include "qemu/coroutine.h"
>
> #include "chardev/char-mux.h"
>
> @@ -119,7 +120,11 @@ static int qemu_chr_write_buffer(Chardev *s,
> retry:
> res = cc->chr_write(s, buf + *offset, len - *offset);
> if (res < 0 && errno == EAGAIN && write_all) {
> - g_usleep(100);
> + if (qemu_in_coroutine()) {
> + qemu_co_sleep_ns(QEMU_CLOCK_REALTIME, 100000);
> + } else {
> + g_usleep(100);
> + }
> goto retry;
> }
>
> --
> 2.20.1
