From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Vrabel Subject: [PATCH 03/12] xen/events: introduce test_and_set_mask Date: Fri, 9 Aug 2013 19:15:12 +0100 Message-ID: <1376072121-17786-4-git-send-email-david.vrabel@citrix.com> References: <1376072121-17786-1-git-send-email-david.vrabel@citrix.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1376072121-17786-1-git-send-email-david.vrabel@citrix.com> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xen.org Errors-To: xen-devel-bounces@lists.xen.org To: xen-devel@lists.xen.org Cc: Boris Ostrovsky , Wei Liu , David Vrabel List-Id: xen-devel@lists.xenproject.org From: Wei Liu Signed-off-by: Wei Liu Signed-off-by: David Vrabel --- drivers/xen/events.c | 8 +++++++- 1 files changed, 7 insertions(+), 1 deletions(-) diff --git a/drivers/xen/events.c b/drivers/xen/events.c index af61813..057a033 100644 --- a/drivers/xen/events.c +++ b/drivers/xen/events.c @@ -351,6 +351,12 @@ static inline int test_evtchn(int port) return sync_test_bit(port, BM(&s->evtchn_pending[0])); } +static inline int test_and_set_mask(int port) +{ + struct shared_info *s = HYPERVISOR_shared_info; + return sync_test_and_set_bit(port, BM(&s->evtchn_mask[0])); +} + /** * notify_remote_via_irq - send event to remote end of event channel via irq @@ -1519,7 +1525,7 @@ static int retrigger_evtchn(int evtchn) if (!VALID_EVTCHN(evtchn)) return 0; - masked = sync_test_and_set_bit(evtchn, BM(s->evtchn_mask)); + masked = test_and_set_mask(evtchn); sync_set_bit(evtchn, BM(s->evtchn_pending)); if (!masked) unmask_evtchn(evtchn); -- 1.7.2.5