Messages in this thread | | | Subject | RE: Expertise required on building code for SMP | Date | Thu, 13 Jul 2006 16:26:06 +0530 | From | "Hannibal B" <> |
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Bottom half of your driver code is the were you can take advantage of the SMP feature.You can use either workqueue(which is a simpler interface which will create number threads based on the cpu count ),but if U want finer control you can use Kthread(which does'nt inherits parents sigmask and VM) or kernel_thread, depending on your need.
-----Original Message----- From: Arjan van de Ven [mailto:arjan@infradead.org] Sent: Thursday, July 13, 2006 1:16 PM To: bhuvan.kumarmital@wipro.com Cc: linux-usb-devel@lists.sourceforge.net; kernelnewbies-request@nl.linux.org; kernel-mentors@selenic.com; os_drivers@osdl.org; linux-kernel@vger.kernel.org Subject: Re: Expertise required on building code for SMP
On Thu, 2006-07-13 at 13:12 +0530, bhuvan.kumarmital@wipro.com wrote: > We've written a device driver in linux for a pcmcia card with usb and > serial functionality. I need to test this driver on a dual core/SMP > machine. We work on kernel 2.6.15.4. I have recompiled this kernel > version on my dual core machine with the CONFIG_SMP flag set during > menuconfig. > > How do i ensure that my driver is making use of the SMP feature? Do > build my driver code i have a makefile in which i use the EXTRA_CFLAGS= > -D__SMP__ -DCONFIG_SMP -DLINUX.
NO!
You should just use a normal KBuild makefile, and not ever add any extra cflags....
(but you failed to provide a URL to even your Makefile but also to your code so it's hard to give you a detailed recommendation)
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