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d="scan'208";a="365614981" Received: from fmsmsx108.amr.corp.intel.com ([10.18.124.206]) by fmsmga001.fm.intel.com with ESMTP; 22 Apr 2020 01:31:21 -0700 Received: from shsmsx603.ccr.corp.intel.com (10.109.6.143) by FMSMSX108.amr.corp.intel.com (10.18.124.206) with Microsoft SMTP Server (TLS) id 14.3.439.0; Wed, 22 Apr 2020 01:31:21 -0700 Received: from shsmsx605.ccr.corp.intel.com (10.109.6.215) by SHSMSX603.ccr.corp.intel.com (10.109.6.143) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.1713.5; Wed, 22 Apr 2020 16:31:19 +0800 Received: from shsmsx605.ccr.corp.intel.com ([10.109.6.215]) by SHSMSX605.ccr.corp.intel.com ([10.109.6.215]) with mapi id 15.01.1713.004; Wed, 22 Apr 2020 16:31:19 +0800 From: "Zhang, Chen" To: Lukas Straub , qemu-devel Subject: RE: [PATCH 2/3] chardev/char.c: Use qemu_co_sleep_ns if in coroutine Thread-Topic: [PATCH 2/3] chardev/char.c: Use qemu_co_sleep_ns if in coroutine Thread-Index: AQHWDdRNnkCIsDBxXE6FbsLyxcPo8qiE5N3A Date: Wed, 22 Apr 2020 08:31:19 +0000 Message-ID: <0ec3fe8fb159493fa7f08bf7484116a0@intel.com> References: In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: dlp-product: dlpe-windows dlp-version: 11.2.0.6 dlp-reaction: no-action x-originating-ip: [10.239.127.36] Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Received-SPF: pass client-ip=192.55.52.120; envelope-from=chen.zhang@intel.com; helo=mga04.intel.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/04/22 03:46:17 X-ACL-Warn: Detected OS = FreeBSD 9.x or newer [fuzzy] X-Received-From: 192.55.52.120 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: =?iso-8859-1?Q?Marc-Andr=E9_Lureau?= , Jason Wang , Li Zhijian , Paolo Bonzini Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" > -----Original Message----- > From: Lukas Straub > Sent: Thursday, April 9, 2020 2:34 AM > To: qemu-devel > Cc: Zhang, Chen ; Li Zhijian > ; Jason Wang ; Marc- > Andr=E9 Lureau ; Paolo Bonzini > > Subject: [PATCH 2/3] chardev/char.c: Use qemu_co_sleep_ns if in coroutine >=20 > This will be needed in the next patch. >=20 > Signed-off-by: Lukas Straub Reviewed-by: Zhang Chen > --- > chardev/char.c | 7 ++++++- > 1 file changed, 6 insertions(+), 1 deletion(-) >=20 > 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" >=20 > #include "chardev/char-mux.h" >=20 > @@ -119,7 +120,11 @@ static int qemu_chr_write_buffer(Chardev *s, > retry: > res =3D cc->chr_write(s, buf + *offset, len - *offset); > if (res < 0 && errno =3D=3D EAGAIN && write_all) { > - g_usleep(100); > + if (qemu_in_coroutine()) { > + qemu_co_sleep_ns(QEMU_CLOCK_REALTIME, 100000); > + } else { > + g_usleep(100); > + } > goto retry; > } >=20 > -- > 2.20.1