 Home |
Products |
Support |
Community |
News |
xen-devel
[Xen-devel] [PATCH]Enhance Cx stability by adding softirq check before e
| To: | <xen-devel@xxxxxxxxxxxxxxxxxxx> |
|---|---|
| Subject: | [Xen-devel] [PATCH]Enhance Cx stability by adding softirq check before entry cstate |
| From: | "Wei, Gang" <gang.wei@xxxxxxxxx> |
| Date: | Tue, 3 Jun 2008 15:27:10 +0800 |
| Cc: | "Tian, Kevin" <kevin.tian@xxxxxxxxx>, Keir Fraser <keir.fraser@xxxxxxxxxxxxx> |
| Delivery-date: | Tue, 03 Jun 2008 00:27:59 -0700 |
| Envelope-to: | www-data@xxxxxxxxxxxxxxxxxx |
| List-help: | <mailto:xen-devel-request@lists.xensource.com?subject=help> |
| List-id: | Xen developer discussion <xen-devel.lists.xensource.com> |
| List-post: | <mailto:xen-devel@lists.xensource.com> |
| List-subscribe: | <http://lists.xensource.com/cgi-bin/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=subscribe> |
| List-unsubscribe: | <http://lists.xensource.com/cgi-bin/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=unsubscribe> |
| Sender: | xen-devel-bounces@xxxxxxxxxxxxxxxxxxx |
| Thread-index: | AcjFSzw51ugjdmWgSwabQ3ojWUFQeg== |
| Thread-topic: | [PATCH]Enhance Cx stability by adding softirq check before entry cstate |
Without checking softirq_pending before entry Cx state, softirq such as SCHEDULE_SOFTIRQ and TIMER_SOFTIRQ can't be handled timely. It may cause severe failures such as disk I/O failure. This patch addresses the issue above, meanwhile move timing points closer to cstate entry/exit point to make C3 residency more accurate, and enable irq a little earlier. Signed-off-by: Wei Gang <gang.wei@xxxxxxxxx> Signed-off-by: Tian Kevin <kevin.tian@xxxxxxxxx> Jimmy
_______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
| <Prev in Thread] | Current Thread | [Next in Thread> |
|---|---|---|
| ||
| Previous by Date: | Re: [Xen-devel] We still have to disable vtd for old chipset?, Keir Fraser |
|---|---|
| Next by Date: | [Xen-devel] [PATCH]Improve HPET comparator reprog to prevent intr-near-missing case, Wei, Gang |
| Previous by Thread: | [Xen-devel] Build failed with cs 17738 and up with opensuse10.3 (gcc version 4.2.1), maxxximatoze |
| Next by Thread: | [Xen-devel] [PATCH]Improve HPET comparator reprog to prevent intr-near-missing case, Wei, Gang |
| Indexes: | [Date] [Thread] [Top] [All Lists] |
