struct mm_struct *mm;
unsigned int cpu, max;
- again:
max = last_context - first_context;
/* Attempt to free next_context first and then loop until we manage */
mm->context.id = MMU_NO_CONTEXT;
/* Mark it stale on all CPUs that used this mm */
- for_each_cpu_mask_nr(cpu, mm->cpu_vm_mask)
+ for_each_cpu(cpu, mm_cpumask(mm))
__set_bit(id, stale_map[cpu]);
return id;
}
spin_unlock(&context_lock);
cpu_relax();
spin_lock(&context_lock);
- goto again;
+
+ /* This will cause the caller to try again */
+ return MMU_NO_CONTEXT;
}
#endif /* CONFIG_SMP */
pr_debug("[%d] steal context %d from mm @%p\n", cpu, id, mm);
- /* Mark this mm has having no context anymore */
- mm->context.id = MMU_NO_CONTEXT;
-
/* Flush the TLB for that context */
local_flush_tlb_mm(mm);
+ /* Mark this mm has having no context anymore */
+ mm->context.id = MMU_NO_CONTEXT;
+
/* XXX This clear should ultimately be part of local_flush_tlb_mm */
__clear_bit(id, stale_map[cpu]);
WARN_ON(prev->context.active < 1);
prev->context.active--;
}
+
+ again:
#endif /* CONFIG_SMP */
/* If we already have a valid assigned context, skip all that */
#ifdef CONFIG_SMP
if (num_online_cpus() > 1) {
id = steal_context_smp(id);
- goto stolen;
+ if (id == MMU_NO_CONTEXT)
+ goto again;
}
#endif /* CONFIG_SMP */
id = steal_context_up(id);
mm->context.id = MMU_NO_CONTEXT;
#ifdef DEBUG_MAP_CONSISTENCY
mm->context.active = 0;
- context_mm[id] = NULL;
#endif
+ context_mm[id] = NULL;
nr_free_contexts++;
}
spin_unlock(&context_lock);
#endif
printk(KERN_INFO
- "MMU: Allocated %d bytes of context maps for %d contexts\n",
+ "MMU: Allocated %zu bytes of context maps for %d contexts\n",
2 * CTX_MAP_SIZE + (sizeof(void *) * (last_context + 1)),
last_context - first_context + 1);