netdev - Re: linkwatch bustage in git-net

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Message-ID: <20070509053154.GA850@gondor.apana.org.au>
Date:	Wed, 9 May 2007 15:31:55 +1000
From:	Herbert Xu <herbert@...dor.apana.org.au>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	"David S. Miller" <davem@...emloft.net>, netdev@...r.kernel.org
Subject: Re: linkwatch bustage in git-net

On Tue, May 08, 2007 at 10:20:33PM -0700, Andrew Morton wrote:
> 
> My Vaio is taking 5-10x longer to boot when git-net as of five minutes ago
> is applied.
> 
> It's not very clear what's gone wrong.  A few linkwatch things are showing
> up in profiles, but it's not burning excessive CPU afaict.

Hmm, I don't see it here (probably because we use different NICs).
But does this help?

Cheers,
-- 
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Email: Herbert Xu ~{PmV>HI~} <herbert@...dor.apana.org.au>
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--
diff --git a/net/core/link_watch.c b/net/core/link_watch.c
index b5f4579..4674ae5 100644
--- a/net/core/link_watch.c
+++ b/net/core/link_watch.c
@@ -101,8 +101,10 @@ static void linkwatch_schedule_work(unsigned long delay)
 		return;
 
 	/* If we wrap around we'll delay it by at most HZ. */
-	if (delay > HZ)
+	if (delay > HZ) {
+		linkwatch_nextevent = jiffies;
 		delay = 0;
+	}
 
 	schedule_delayed_work(&linkwatch_work, delay);
 }
-
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