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From: Ingo Molnar <mingo@kernel.org>
To: Vince Weaver <vincent.weaver@maine.edu>
Cc: linux-kernel@vger.kernel.org,
	Peter Zijlstra <a.p.zijlstra@chello.nl>,
	Paul Mackerras <paulus@samba.org>, Ingo Molnar <mingo@redhat.com>,
	Arnaldo Carvalho de Melo <acme@ghostprotocols.net>,
	eranian@gmail.com, "Meadows,
	Lawrence F" <lawrence.f.meadows@intel.com>
Subject: Re: [PATCH 0/3] perf_event: enable overflow interrupts on KNC
Date: Thu, 18 Oct 2012 20:54:37 +0200	[thread overview]
Message-ID: <20121018185437.GA21109@gmail.com> (raw)
In-Reply-To: <alpine.DEB.2.02.1210181339510.28924@vincent-weaver-1.um.maine.edu>


* Vince Weaver <vincent.weaver@maine.edu> wrote:

> I looked into getting a 3.7 kernel up and going on the KNC 
> board, but the diff between Intel's release and stock 
> 2.6.34.11 has 70k lines.  Much of that is kdb, but there's 
> also a lot of low-level changes too, some of it due to the 
> fact that KNC is 64-bit x86 but has no support for SSE (so you 
> need to handle that properly or none of your userspace will 
> run).

Getting that support upstream would definitely be useful, so if 
you feel so inclined splitting out (or creating anew) the 
required patches ...

I don't know how it's structured, but making the !SSE 
distinction runtime would be strongly preferred over any 
compile-time .config switchery. Otherwise, the guiding principle 
is that we'll do whatever it takes to support the hardware, with 
the reasonably best possible cleanliness.

Thanks,

	Ingo

      reply	other threads:[~2012-10-18 18:54 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-10-17 17:02 [PATCH 0/3] perf_event: enable overflow interrupts on KNC Vince Weaver
2012-10-17 17:03 ` [PATCH 1/3] Make KNC use full 40-bit width of counters Vince Weaver
2012-10-24 10:34   ` [tip:perf/urgent] perf/x86: Make Intel " tip-bot for Vince Weaver
2012-10-17 17:04 ` [PATCH 2/3] perf_event: Remove cpuc->enable check on KNC event enable/disable Vince Weaver
2012-10-24 10:35   ` [tip:perf/urgent] perf/x86: Remove cpuc-> enable check on Intl " tip-bot for Vince Weaver
2012-10-17 17:05 ` [PATCH 3/3] perf_event: Enable overflow on KNC with a custom knc_pmu_handle_irq() Vince Weaver
2012-10-24 10:36   ` [tip:perf/urgent] perf/x86: Enable overflow on Intel " tip-bot for Vince Weaver
2012-10-17 18:07 ` [PATCH 0/3] perf_event: enable overflow interrupts on KNC Ingo Molnar
2012-10-17 20:24   ` Vince Weaver
2012-10-17 21:47     ` Ingo Molnar
2012-10-18 17:54       ` Vince Weaver
2012-10-18 18:54         ` Ingo Molnar [this message]

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