From: Andi Kleen <ak@muc.de>
To: Ashok Raj <ashok.raj@intel.com>
Cc: Andrew Morton <akpm@osdl.org>,
zwane@arm.linux.org.uk, linux-kernel@vger.kernel.org
Subject: Re: [patch 5/8] x86_64:Dont do broadcast IPIs when hotplug is enabled in flat mode.
Date: 4 Aug 2005 12:51:07 +0200
Date: Thu, 4 Aug 2005 12:51:07 +0200 [thread overview]
Message-ID: <20050804105107.GD97893@muc.de> (raw)
In-Reply-To: <20050801203011.403184000@araj-em64t>
> static void flat_send_IPI_allbutself(int vector)
> {
> +#ifndef CONFIG_HOTPLUG_CPU
> if (((num_online_cpus()) - 1) >= 1)
> __send_IPI_shortcut(APIC_DEST_ALLBUT, vector,APIC_DEST_LOGICAL);
> +#else
> + cpumask_t allbutme = cpu_online_map;
> + int me = get_cpu(); /* Ensure we are not preempted when we clear */
> + cpu_clear(me, allbutme);
> + flat_send_IPI_mask(allbutme, vector);
> + put_cpu();
This still needs the num_online_cpus()s check.
-Andi
next prev parent reply other threads:[~2005-08-04 10:51 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-08-01 20:20 [patch 0/8] Updated patches for x86_64 Ashok Raj
2005-08-01 20:20 ` [patch 1/8] x86_64: Reintroduce clustered_apic_check() " Ashok Raj
2005-08-01 22:36 ` Ashok Raj
2005-08-01 20:20 ` [patch 2/8] x86_64: create sysfs entries for cpu only for present cpus Ashok Raj
2005-08-04 10:37 ` Andi Kleen
2005-08-01 20:20 ` [patch 3/8] x86_64:Dont call enforce_max_cpus when hotplug is enabled Ashok Raj
2005-08-04 10:41 ` Andi Kleen
2005-08-04 16:28 ` Ashok Raj
2005-08-01 20:20 ` [patch 4/8] x86_64:Fix cluster mode send_IPI_allbutself to use get_cpu()/put_cpu() Ashok Raj
2005-08-04 10:43 ` Andi Kleen
2005-08-04 16:33 ` Ashok Raj
2005-08-01 20:20 ` [patch 5/8] x86_64:Dont do broadcast IPIs when hotplug is enabled in flat mode Ashok Raj
2005-08-04 10:51 ` Andi Kleen [this message]
2005-08-04 16:36 ` Ashok Raj
2005-08-04 17:27 ` Ashok Raj
2005-08-01 20:20 ` [patch 6/8] x86_64:Dont use Lowest Priority when using physical mode Ashok Raj
2005-08-01 20:20 ` [patch 7/8] x86_64:Use common functions in cluster and physflat mode Ashok Raj
2005-08-01 20:20 ` [patch 8/8] x86_64: Choose physflat for AMD systems only when >8 CPUS Ashok Raj
2005-08-04 10:54 ` Andi Kleen
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