[Xen-changelog] [xen master] xen: cpupool: small optimization when moving between pools

[patchbot@xxxxxxx]

commit f6bde162c4165f7e83f9618cc13dc3aa2af4b6dd
Author:     Dario Faggioli <dario.faggioli@xxxxxxxxxx>
AuthorDate: Wed Aug 3 13:31:49 2016 +0100
Commit:     George Dunlap <george.dunlap@xxxxxxxxxx>
CommitDate: Wed Aug 3 14:14:08 2016 +0100

    xen: cpupool: small optimization when moving between pools
    
    If the domain is already where we want it to go,
    there's not much to do indeed.
    
    Signed-off-by: Dario Faggioli <dario.faggioli@xxxxxxxxxx>
    Reviewed-by: Juergen Gross <jgross@xxxxxxxx>
---
 xen/common/cpupool.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/xen/common/cpupool.c b/xen/common/cpupool.c
index 5dacc61..9998394 100644
--- a/xen/common/cpupool.c
+++ b/xen/common/cpupool.c
@@ -232,6 +232,9 @@ static int cpupool_move_domain_locked(struct domain *d, 
struct cpupool *c)
 {
     int ret;
 
+    if ( unlikely(d->cpupool == c) )
+        return 0;
+
     d->cpupool->n_dom--;
     ret = sched_move_domain(d, c);
     if ( ret )
--
generated by git-patchbot for /home/xen/git/xen.git#master

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