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Date: Fri, 29 Jul 2005 00:26:11 +0200
From: Eric Dumazet <dada1@cosmosbay.com>
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To: Matt Mackall <mpm@selenic.com>
CC: linux-kernel <linux-kernel@vger.kernel.org>
Subject: [PATCH] random : prefetch the whole pool, not 1/4 of it
References: <20050407212058.GU3174@waste.org>
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Hi Matt

Could you check this patch and apply it ?

Thank you

Eric

[RANDOM] : prefetch the whole pool, not 1/4 of it,
            (pool contains u32 words, not bytes)

Signed-off-by: Eric Dumazet <dada1@cosmosbay.com>


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--- linux-2.6.13-rc3/drivers/char/random.c	2005-07-13 06:46:46.000000000 +0200
+++ linux-2.6.13-rc3-ed/drivers/char/random.c	2005-07-29 00:11:24.000000000 +0200
@@ -469,7 +469,7 @@
 	next_w = *in++;
 
 	spin_lock_irqsave(&r->lock, flags);
-	prefetch_range(r->pool, wordmask);
+	prefetch_range(r->pool, wordmask*4);
 	input_rotate = r->input_rotate;
 	add_ptr = r->add_ptr;
 

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