kernel/events/uprobes.c

753 static void consumer_add(struct uprobe *uprobe, struct uprobe_consumer *uc)
756 	uc->next = uprobe->consumers;
757 	uprobe->consumers = uc;
762  * For uprobe @uprobe, delete the consumer @uc.
763  * Return true if the @uc is deleted successfully
766 static bool consumer_del(struct uprobe *uprobe, struct uprobe_consumer *uc)
773 		if (*con == uc) {
774 			*con = uc->next;
866 static inline bool consumer_filter(struct uprobe_consumer *uc,
869 	return !uc->filter || uc->filter(uc, ctx, mm);
875 	struct uprobe_consumer *uc;
879 	for (uc = uprobe->consumers; uc; uc = uc->next) {
880 		ret = consumer_filter(uc, ctx, mm);
1083 __uprobe_unregister(struct uprobe *uprobe, struct uprobe_consumer *uc)
1087 	if (WARN_ON(!consumer_del(uprobe, uc)))
1100  * @uc: identify which probe if multiple probes are colocated.
1102 void uprobe_unregister(struct inode *inode, loff_t offset, struct uprobe_consumer *uc)
1111 	__uprobe_unregister(uprobe, uc);
1121  * @uc: information on howto handle the probe..
1128  * refcount is released when the last @uc for the @uprobe
1136 			     loff_t ref_ctr_offset, struct uprobe_consumer *uc)
1142 	if (!uc->handler && !uc->ret_handler)
1176 		consumer_add(uprobe, uc);
1177 		ret = register_for_each_vma(uprobe, uc);
1179 			__uprobe_unregister(uprobe, uc);
1190 		    struct uprobe_consumer *uc)
1192 	return __uprobe_register(inode, offset, 0, uc);
1197 			   loff_t ref_ctr_offset, struct uprobe_consumer *uc)
1199 	return __uprobe_register(inode, offset, ref_ctr_offset, uc);
1207  * @uc: consumer which wants to add more or remove some breakpoints
1211 			struct uprobe_consumer *uc, bool add)
1222 	for (con = uprobe->consumers; con && con != uc ; con = con->next)
1225 		ret = register_for_each_vma(uprobe, add ? uc : NULL);
2070 	struct uprobe_consumer *uc;
2075 	for (uc = uprobe->consumers; uc; uc = uc->next) {
2078 		if (uc->handler) {
2079 			rc = uc->handler(uc, regs);
2081 				"bad rc=0x%x from %ps()\n", rc, uc->handler);
2084 		if (uc->ret_handler)
2104 	struct uprobe_consumer *uc;
2107 	for (uc = uprobe->consumers; uc; uc = uc->next) {
2108 		if (uc->ret_handler)
2109 			uc->ret_handler(uc, ri->func, regs);