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Message-ID: <20130305002857.GA7656@concordia> Date: Tue, 5 Mar 2013 11:28:57 +1100 From: Michael Ellerman <michael@...erman.id.au> To: Mike Qiu <qiudayu@...ux.vnet.ibm.com> Cc: linuxppc-dev@...ts.ozlabs.org, tglx@...utronix.de, linux-kernel@...r.kernel.org Subject: Re: [PATCH 0/3] Enable multiple MSI feature in pSeries On Mon, Mar 04, 2013 at 11:14:53AM +0800, Mike Qiu wrote: > δΊ 2013/3/1 11:54, Michael Ellerman ει: > >On Fri, Mar 01, 2013 at 11:08:45AM +0800, Mike wrote: > >>Hi all > >> > >>Any comments? or any questions about my patchset? > >You were going to get some performance numbers that show a definite > >benefit for using more than one MSI. > Yes, but my patch just enable the kernel to support this feature, whether > to use it depens on the device driver. Sure, but we don't add code just for fun, so unless there's a good reason to add the feature - like better performance - we won't bother. > And this feature has been merged to the kernel for X86 for a long time. > See commit: 5ca72c4f7c412c2002363218901eba5516c476b1 > 51906e779f2b13b38f8153774c4c7163d412ffd9 That commit was merged in 3.9-rc1, ie. a few days ago, so no it has not been in x86 for a long time. That code removes the need for your first patch, which is a good start. Please send a new version using irq_set_msi_desc_off(). cheers -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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