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From cbfdbd7430e27c24d55b880144d5df05ef949417 Mon Sep 17 00:00:00 2001
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From: "Daniel P. Berrange" <berrange@redhat.com>
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Date: Thu, 8 Feb 2018 17:50:31 +0100
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Subject: [PATCH 17/27] ui: avoid pointless VNC updates if framebuffer isn't
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dirty
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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RH-Author: Daniel P. Berrange <berrange@redhat.com>
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Message-id: <20180208175041.5634-18-berrange@redhat.com>
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Patchwork-id: 78946
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O-Subject: [RHEL-7.5 qemu-kvm PATCH v1 17/27] ui: avoid pointless VNC updates if framebuffer isn't dirty
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Bugzilla: 1527405
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RH-Acked-by: Laszlo Ersek <lersek@redhat.com>
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RH-Acked-by: Gerd Hoffmann <kraxel@redhat.com>
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RH-Acked-by: Miroslav Rezanina <mrezanin@redhat.com>
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From: "Daniel P. Berrange" <berrange@redhat.com>
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The vnc_update_client() method checks the 'has_dirty' flag to see if there are
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dirty regions that are pending to send to the client. Regardless of this flag,
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if a forced update is requested, updates must be sent. For unknown reasons
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though, the code also tries to sent updates if audio capture is enabled. This
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makes no sense as audio capture state does not impact framebuffer contents, so
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this check is removed.
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Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
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Reviewed-by: Darren Kenny <darren.kenny@oracle.com>
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Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
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Message-id: 20171218191228.31018-5-berrange@redhat.com
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Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
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(cherry picked from commit 3541b08475d51bddf8aded36576a0ff5a547a978)
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Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
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---
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ui/vnc.c | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/ui/vnc.c b/ui/vnc.c
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index aebaa37..eea5702 100644
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--- a/ui/vnc.c
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+++ b/ui/vnc.c
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@@ -869,7 +869,7 @@ static int vnc_update_client(VncState *vs, int has_dirty)
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return 0;
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}
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- if (!vs->has_dirty && !vs->audio_cap && !vs->force_update) {
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+ if (!vs->has_dirty && !vs->force_update) {
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return 0;
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}
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--
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1.8.3.1
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