From: Keith Owens <kaos@sgi.com>
To: eranian@hpl.hp.com
Cc: "Bryan O'Sullivan" <bos@serpentine.com>, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 2/6] 2.6.16-rc1 perfmon2 patch for review
Date: Wed, 25 Jan 2006 22:10:44 +1100 [thread overview]
Message-ID: <23407.1138187444@ocs3.ocs.com.au> (raw)
In-Reply-To: Your message of "Tue, 24 Jan 2006 07:13:25 -0800." <20060124151325.GC7130@frankl.hpl.hp.com>
Stephane Eranian (on Tue, 24 Jan 2006 07:13:25 -0800) wrote:
>Well, I am not sure why the smp_call_function_single() is not already
>implemented for i386. I can see that the underlying function send_IPI_mask()
>is there. It also looks like flush_tlb_others() is also selecting CPUs a subset
>of CPUs. I am not a big enough expert on x86 to understand if there are gotchas
>to watch for. Yet it would surprise me if this is radically different than on
>x86_64 (em64t) which already has the call. Maybe someone can clarify this?
There is no hardware reason why smp_call_function_single() cannot be
implemented on i386. The only reason it has not been implemented on
i386 is that nobody has had a need for it yet.
prev parent reply other threads:[~2006-01-25 11:10 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-01-20 15:20 Stephane Eranian
2006-01-20 16:23 ` Bryan O'Sullivan
2006-01-24 15:13 ` Stephane Eranian
2006-01-25 11:10 ` Keith Owens [this message]
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