From: Andrea Arcangeli <andrea@suse.de>
To: Ingo Molnar <mingo@elte.hu>
Cc: Eric Whiting <ewhiting@amis.com>,
akpm@osdl.org, linux-kernel@vger.kernel.org
Subject: Re: -mmX 4G patches feedback [numbers: how much performance impact]
Date: Wed, 7 Apr 2004 19:27:09 +0200 [thread overview]
Message-ID: <20040407172709.GH26888@dualathlon.random> (raw)
In-Reply-To: <20040407064629.GA31338@elte.hu>
On Wed, Apr 07, 2004 at 08:46:29AM +0200, Ingo Molnar wrote:
> 4:4 patch) but a __flush_tlb() added before and after do_IRQ(), in
I added __flush_tlb_global on entry to better simulate the effect of
4:4. I doubt it makes a difference though.
--- x/arch/i386/kernel/irq.c.~1~ 2004-03-11 08:27:22.000000000 +0100
+++ x/arch/i386/kernel/irq.c 2004-04-07 19:23:21.735733664 +0200
@@ -427,6 +427,7 @@ asmlinkage unsigned int do_IRQ(struct pt
struct irqaction * action;
unsigned int status;
+ __flush_tlb_global();
irq_enter();
#ifdef CONFIG_DEBUG_STACKOVERFLOW
@@ -507,6 +508,7 @@ out:
spin_unlock(&desc->lock);
irq_exit();
+ __flush_tlb();
return 1;
}
next prev parent reply other threads:[~2004-04-07 17:27 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-04-05 16:36 -mmX 4G patches feedback Eric Whiting
2004-04-05 17:46 ` Andrea Arcangeli
2004-04-05 21:35 ` Eric Whiting
2004-04-05 22:16 ` Andrea Arcangeli
2004-04-06 11:55 ` -mmX 4G patches feedback [numbers: how much performance impact] Ingo Molnar
2004-04-06 14:49 ` Eric Whiting
2004-04-06 15:59 ` Andrea Arcangeli
2004-04-06 16:13 ` Arjan van de Ven
2004-04-06 16:39 ` Andrea Arcangeli
2004-04-06 17:24 ` Ingo Molnar
2004-04-06 17:57 ` Andrea Arcangeli
2004-04-07 22:54 ` Martin J. Bligh
2004-04-07 22:50 ` Andrea Arcangeli
2004-04-06 19:25 ` Ingo Molnar
2004-04-06 20:25 ` Andrea Arcangeli
2004-04-07 6:03 ` Andrea Arcangeli
2004-04-07 6:46 ` Ingo Molnar
2004-04-07 7:23 ` Andrea Arcangeli
2004-04-07 8:23 ` Ingo Molnar
2004-04-07 21:35 ` Andrea Arcangeli
2004-04-07 17:27 ` Andrea Arcangeli [this message]
2004-04-07 7:25 ` Ingo Molnar
2004-04-07 21:39 ` Andrea Arcangeli
2004-04-07 22:58 ` Martin J. Bligh
2004-04-07 23:01 ` Andrea Arcangeli
2004-04-07 23:21 ` Martin J. Bligh
2004-04-07 23:18 ` Andrea Arcangeli
2004-04-07 23:34 ` Martin J. Bligh
2004-04-08 0:18 ` Andrea Arcangeli
2004-04-08 6:24 ` Martin J. Bligh
2004-04-08 21:59 ` Andrea Arcangeli
2004-04-08 22:19 ` Martin J. Bligh
2004-04-08 22:19 ` Andrea Arcangeli
2004-04-08 23:14 ` Martin J. Bligh
2004-04-08 23:22 ` Andrea Arcangeli
2004-04-08 23:42 ` Martin J. Bligh
2004-04-08 23:49 ` Andrea Arcangeli
2004-04-07 21:19 ` -mmX 4G patches feedback Martin J. Bligh
2004-04-07 21:49 ` Andrea Arcangeli
2004-04-06 17:59 -mmX 4G patches feedback [numbers: how much performance impact] Manfred Spraul
2004-04-06 18:41 ` Andrea Arcangeli
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