On 01/17/2011 03:07 AM, Peter Zijlstra wrote: > For future rework of try_to_wake_up() we'd like to push part of that > onto the CPU the task is actually going to run on, in order to do so we > need a generic callback from the existing scheduler IPI. > > This patch introduces such a generic callback: scheduler_ipi() and > implements it as a NOP. > > I visited existing smp_send_reschedule() implementations and tried to > add a call to scheduler_ipi() in their handler part, but esp. for MIPS > I'm not quite sure I actually got all of them. > > Also, while reading through all this, I noticed the blackfin SMP code > looks to be broken, it simply discards any IPI when low on memory. > > Signed-off-by: Peter Zijlstra<a.p.zijls...@chello.nl> > --- > arch/alpha/kernel/smp.c | 1 + > arch/arm/kernel/smp.c | 1 + > arch/blackfin/mach-common/smp.c | 3 ++- > arch/cris/arch-v32/kernel/smp.c | 13 ++++++++----- > arch/ia64/kernel/irq_ia64.c | 2 ++ > arch/ia64/xen/irq_xen.c | 10 +++++++++- > arch/m32r/kernel/smp.c | 2 +- > arch/mips/kernel/smtc.c | 1 + > arch/mips/sibyte/bcm1480/smp.c | 7 +++---- > arch/mips/sibyte/sb1250/smp.c | 7 +++---- [...]
Peter, You will also have to patch the mailbox_interrupt() function in arch/mips/cavium-octeon/smp.c David Daney. ------------------------------------------------------------------------------ Protect Your Site and Customers from Malware Attacks Learn about various malware tactics and how to avoid them. Understand malware threats, the impact they can have on your business, and how you can protect your company and customers by using code signing. http://p.sf.net/sfu/oracle-sfdevnl _______________________________________________ User-mode-linux-user mailing list User-mode-linux-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/user-mode-linux-user
