mips/mm/context.c

66 	u64 mmid;
76 		mmid = xchg_relaxed(&cpu_data[cpu].asid_cache, 0);
85 		if (mmid == 0)
86 			mmid = per_cpu(reserved_mmids, cpu);
88 		__set_bit(mmid & cpu_asid_mask(&cpu_data[cpu]), mmid_map);
89 		per_cpu(reserved_mmids, cpu) = mmid;
99 static bool check_update_reserved_mmid(u64 mmid, u64 newmmid)
115 		if (per_cpu(reserved_mmids, cpu) == mmid) {
127 	u64 mmid, version, mmid_mask;
129 	mmid = cpu_context(0, mm);
133 	if (!asid_versions_eq(0, mmid, 0)) {
134 		u64 newmmid = version | (mmid & mmid_mask);
140 		if (check_update_reserved_mmid(mmid, newmmid)) {
141 			mmid = newmmid;
149 		if (!__test_and_set_bit(mmid & mmid_mask, mmid_map)) {
150 			mmid = newmmid;
156 	mmid = find_next_zero_bit(mmid_map, num_mmids, cur_idx);
157 	if (mmid != num_mmids)
168 	mmid = find_first_zero_bit(mmid_map, num_mmids);
171 	__set_bit(mmid, mmid_map);
172 	cur_idx = mmid;
173 	mmid |= version;
175 	set_cpu_context(0, mm, mmid);
176 	return mmid;