On 09/02/2011 04:22 AM, Stefano Stabellini wrote:
do you have a git tree somewhere with this series?
git://github.com/jsgf/linux-xen.git upstream/pvticketlock-slowflag
J
--
To unsubscribe from this list: send the line unsubscribe kvm in
the body of a message to majord...@vger.kernel.org
On Fri, 2 Sep 2011, Jeremy Fitzhardinge wrote:
From: Jeremy Fitzhardinge jeremy.fitzhardi...@citrix.com
This series replaces the existing paravirtualized spinlock mechanism
with a paravirtualized ticketlock mechanism.
Ticket locks have an inherent problem in a virtualized case, because
On Thu, Sep 1, 2011 at 5:54 PM, Jeremy Fitzhardinge jer...@goop.org wrote:
The inner part of ticket lock code becomes:
inc = xadd(lock-tickets, inc);
inc.tail = ~TICKET_SLOWPATH_FLAG;
for (;;) {
unsigned count = SPIN_THRESHOLD;
do {
On 09/02/2011 08:38 AM, Linus Torvalds wrote:
On Thu, Sep 1, 2011 at 5:54 PM, Jeremy Fitzhardinge jer...@goop.org wrote:
The inner part of ticket lock code becomes:
inc = xadd(lock-tickets, inc);
inc.tail = ~TICKET_SLOWPATH_FLAG;
for (;;) {
unsigned count
On Fri, Sep 2, 2011 at 1:07 PM, Jeremy Fitzhardinge jer...@goop.org wrote:
I don't know whether that fastpath code is small enough to consider
inlining everywhere?
No.
There's no point in inlining something that ends up containing a
conditional function call: gcc will have to effectively
On 09/02/2011 01:27 PM, Linus Torvalds wrote:
On Fri, Sep 2, 2011 at 1:07 PM, Jeremy Fitzhardinge jer...@goop.org wrote:
I don't know whether that fastpath code is small enough to consider
inlining everywhere?
No.
There's no point in inlining something that ends up containing a
conditional
From: Jeremy Fitzhardinge jeremy.fitzhardi...@citrix.com
This series replaces the existing paravirtualized spinlock mechanism
with a paravirtualized ticketlock mechanism.
Ticket locks have an inherent problem in a virtualized case, because
the vCPUs are scheduled rather than running concurrently
