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.zijlstra@xxxxxxxxx> > --- > 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. _______________________________________________ Virtualization mailing list Virtualization@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/virtualization
