On Wed, May 14, 2014 at 11:06:29AM +0200, Peter Zijlstra wrote: > > + llist_add(&work->llnode, &per_cpu(irq_work_list, cpu)); > > + native_send_call_func_single_ipi(cpu); > > At the very leastestest make that: > > if (llist_add(&work->llnode, &per_cpu(irq_work_list, cpu))) > native_send_call_func_single_ipi(cpu); > > But ideally, also test the IRQ_WORK_LAZY support, its weird to have that > only be supported for the other queue. > > Hmm, why do we need that LAZY crap, that completely wrecks a perfectly > simple thing. > > The changelog (bc6679aef673f), not the printk() usage make much sense,
s/not/nor/ > printk() can't cause an IPI storm... printk() isn't fast enough to storm > anything. Except, as we all know, slow serial lines.
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