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* [PATCH] cacheline align rt_cache_stat struct
@ 2001-10-02 13:28 Dipankar Sarma
  2001-10-02 23:06 ` David S. Miller
  0 siblings, 1 reply; 2+ messages in thread
From: Dipankar Sarma @ 2001-10-02 13:28 UTC (permalink / raw)
  To: linux-kernel

The per-cpu rt_cache_stat structure should be padded to cacheline
to avoid sharing of cachelines between different CPUs. Here is a patch
to do that for SMP kernels.

Thanks
Dipankar
-- 
Dipankar Sarma  <dipankar@in.ibm.com> Project: http://lse.sourceforge.net
Linux Technology Center, IBM Software Lab, Bangalore, India.


diff -urN linux-2.4.10/include/net/route.h linux-2.4.10+rt/include/net/route.h
--- linux-2.4.10/include/net/route.h	Thu Sep 27 11:59:45 2001
+++ linux-2.4.10+rt/include/net/route.h	Tue Oct  2 18:34:45 2001
@@ -105,7 +105,7 @@
         unsigned int out_hit;
         unsigned int out_slow_tot;
         unsigned int out_slow_mc;
-};
+} ____cacheline_aligned_in_smp;
 
 extern struct ip_rt_acct *ip_rt_acct;
 


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2001-10-02 13:28 [PATCH] cacheline align rt_cache_stat struct Dipankar Sarma
2001-10-02 23:06 ` David S. Miller

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