[svn-commits] sruffell: linux/trunk r10236 - /linux/trunk/drivers/dahdi/wct4xxp/base.c

[SVN commits to the Digium repositories]

Author: sruffell
Date: Thu Oct 20 15:52:26 2011
New Revision: 10236

URL: http://svnview.digium.com/svn/dahdi?view=rev&rev=10236
Log:
wct4xxp: Remove prefetching support.

I was unable to measure a performance change with prefetching.

Signed-off-by: Shaun Ruffell <sruffell at digium.com>
Acked-by: Michael Spiceland <mspiceland at digium.com>
Acked-by: Russ Meyerriecks <rmeyerriecks at digium.com>

Modified:
    linux/trunk/drivers/dahdi/wct4xxp/base.c

Modified: linux/trunk/drivers/dahdi/wct4xxp/base.c
URL: http://svnview.digium.com/svn/dahdi/linux/trunk/drivers/dahdi/wct4xxp/base.c?view=diff&rev=10236&r1=10235&r2=10236
==============================================================================
--- linux/trunk/drivers/dahdi/wct4xxp/base.c (original)
+++ linux/trunk/drivers/dahdi/wct4xxp/base.c Thu Oct 20 15:52:26 2011
@@ -55,9 +55,6 @@
  */
 /* #define ENABLE_WORKQUEUES */
 #endif
-
-/* Enable prefetching may help performance */
-#define ENABLE_PREFETCH
 
 /* Support first generation cards? */
 #define SUPPORT_GEN1 
@@ -2878,26 +2875,6 @@
 		}
 	}
 #endif	
-
-#ifdef ENABLE_PREFETCH
-	prefetch((void *)(ts->readchunk));
-	prefetch((void *)(ts->writechunk));
-	prefetch((void *)(ts->readchunk + 8));
-	prefetch((void *)(ts->writechunk + 8));
-	prefetch((void *)(ts->readchunk + 16));
-	prefetch((void *)(ts->writechunk + 16));
-	prefetch((void *)(ts->readchunk + 24));
-	prefetch((void *)(ts->writechunk + 24));
-	prefetch((void *)(ts->readchunk + 32));
-	prefetch((void *)(ts->writechunk + 32));
-	prefetch((void *)(ts->readchunk + 40));
-	prefetch((void *)(ts->writechunk + 40));
-	prefetch((void *)(ts->readchunk + 48));
-	prefetch((void *)(ts->writechunk + 48));
-	prefetch((void *)(ts->readchunk + 56));
-	prefetch((void *)(ts->writechunk + 56));
-#endif
-
 	_dahdi_ec_span(&ts->span);
 	_dahdi_receive(&ts->span);
 }