[Xen-devel] [PATCH][RFC] consider vcpu-pin weight on Credit Scheduler TAKE2

[Atsushi SAKAI <sakaia@xxxxxxxxxxxxxx>]

Hi, Keir

This patch intends 
to consider vcpu-pin weight on credit scheduler TAKE2.
http://lists.xensource.com/archives/html/xen-devel/2007-06/msg00359.html

The difference from previous one is
1) Coding style clean up
2) Skip loop for unused vcpu-pin-count.
3) Remove if pin_count ==1 in multiple loop.
   Then pin_count ==1 is another loop.

Signed-off-by: Atsushi SAKAI <sakaia@xxxxxxxxxxxxxx>

And one question, 
Does this patch need following tune up for reducing multiple loop?

>From following

-  /* sort weight */
-  for(j=0;j<pin_count;j++)
-  {
-      sortflag = 0;
-      for(k=1;k<pin_count;k++)
-      {
-          if ( pcpu_weight[pcpu_id_list[k-1]] > pcpu_weight[pcpu_id_list[k]] 
)
-          {
-              sortflag = 1;
-              pcpu_id_handle  = pcpu_id_list[k-1];
-              pcpu_id_list[k-1] = pcpu_id_list[k];
-              pcpu_id_list[k]   = pcpu_id_handle;
-          }
-      }
-      if( sortflag == 0)break;
-  }

To following

+     /* sort weight */
+     for(k=1;k<pin_count;k++)
+     {
+          if ( pcpu_weight[pcpu_id_list[k-1]] > pcpu_weight[pcpu_id_list[k]] 
)
+          {
+              pcpu_id_handle  = pcpu_id_list[k-1];
+              pcpu_id_list[k-1] = pcpu_id_list[k];
+              pcpu_id_list[k]   = pcpu_id_handle;
+              if (k > 1) k -= 2;  
+           }
+     }


Thanks
Atsushi SAKAI

Attachment: vcpupinweight0627.patch
Description: Binary data

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