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cacheline align rt_cache_stat struct

PATCH In review Dipankar Sarma 2 participants 2 messages Oct 2, 2001

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Dipankar Sarma

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PATCH 1/1 cacheline align rt_cache_stat struct

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.

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Dipankar

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Dipankar Sarma  <[email protected]> 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;