ptcg_sem 145 arch/ia64/mm/tlb.c static struct spinaphore ptcg_sem; ptcg_sem 245 arch/ia64/mm/tlb.c spinaphore_init(&ptcg_sem, max_purges); ptcg_sem 268 arch/ia64/mm/tlb.c down_spin(&ptcg_sem); ptcg_sem 280 arch/ia64/mm/tlb.c up_spin(&ptcg_sem);