146 	size_t i;  in alloc_slot()  local
148 	for (i = 0; i < n; ++i) {  in alloc_slot()
149 		if (!slot[i]) {  in alloc_slot()
150 			slot[i] = bp;  in alloc_slot()
151 			return i;  in alloc_slot()
183 	int i;  in arch_install_hw_breakpoint()  local
187 		i = alloc_slot(this_cpu_ptr(bp_on_reg), XCHAL_NUM_IBREAK, bp);  in arch_install_hw_breakpoint()
188 		if (i < 0)  in arch_install_hw_breakpoint()
189 			return i;  in arch_install_hw_breakpoint()
190 		set_ibreak_regs(i, bp);  in arch_install_hw_breakpoint()
194 		i = alloc_slot(this_cpu_ptr(wp_on_reg), XCHAL_NUM_DBREAK, bp);  in arch_install_hw_breakpoint()
195 		if (i < 0)  in arch_install_hw_breakpoint()
196 			return i;  in arch_install_hw_breakpoint()
197 		set_dbreak_regs(i, bp);  in arch_install_hw_breakpoint()
205 	size_t i;  in free_slot()  local
207 	for (i = 0; i < n; ++i) {  in free_slot()
208 		if (slot[i] == bp) {  in free_slot()
209 			slot[i] = NULL;  in free_slot()
210 			return i;  in free_slot()
219 	int i;  in arch_uninstall_hw_breakpoint()  local
225 		i = free_slot(this_cpu_ptr(bp_on_reg), XCHAL_NUM_IBREAK, bp);  in arch_uninstall_hw_breakpoint()
226 		if (i >= 0) {  in arch_uninstall_hw_breakpoint()
228 			WSR(ibreakenable & ~(1 << i), SREG_IBREAKENABLE);  in arch_uninstall_hw_breakpoint()
232 		i = free_slot(this_cpu_ptr(wp_on_reg), XCHAL_NUM_DBREAK, bp);  in arch_uninstall_hw_breakpoint()
233 		if (i >= 0)  in arch_uninstall_hw_breakpoint()
234 			xtensa_wsr(0, SREG_DBREAKC + i);  in arch_uninstall_hw_breakpoint()
244 	int i;  in flush_ptrace_hw_breakpoint()  local
247 	for (i = 0; i < XCHAL_NUM_IBREAK; ++i) {  in flush_ptrace_hw_breakpoint()
248 		if (t->ptrace_bp[i]) {  in flush_ptrace_hw_breakpoint()
249 			unregister_hw_breakpoint(t->ptrace_bp[i]);  in flush_ptrace_hw_breakpoint()
250 			t->ptrace_bp[i] = NULL;  in flush_ptrace_hw_breakpoint()
253 	for (i = 0; i < XCHAL_NUM_DBREAK; ++i) {  in flush_ptrace_hw_breakpoint()
254 		if (t->ptrace_wp[i]) {  in flush_ptrace_hw_breakpoint()
255 			unregister_hw_breakpoint(t->ptrace_wp[i]);  in flush_ptrace_hw_breakpoint()
256 			t->ptrace_wp[i] = NULL;  in flush_ptrace_hw_breakpoint()
274 	int i;  in restore_dbreak()  local
276 	for (i = 0; i < XCHAL_NUM_DBREAK; ++i) {  in restore_dbreak()
277 		struct perf_event *bp = this_cpu_ptr(wp_on_reg)[i];  in restore_dbreak()
280 			set_dbreak_regs(i, bp);  in restore_dbreak()
288 		int i;  in check_hw_breakpoint()  local
291 		for (i = 0; i < XCHAL_NUM_IBREAK; ++i) {  in check_hw_breakpoint()
292 			if (bp[i] && !bp[i]->attr.disabled &&  in check_hw_breakpoint()
293 			    regs->pc == bp[i]->attr.bp_addr)  in check_hw_breakpoint()
294 				perf_bp_event(bp[i], regs);  in check_hw_breakpoint()