irq_chip_eoi_parent – Invoke EOI on the parent interrupt Synopsis void irq_chip_eoi_parent(struct irq_data *data); Arguments data Pointer to interrupt specific data Authors Thomas Gleixner <tglx [at] linutronix.de> Author. Ingo Molnar <mingo [at] elte.hu> Author. Copyright
irq_chip_enable_parent – Enable the parent interrupt (defaults to unmask if NULL) Synopsis void irq_chip_enable_parent(struct irq_data *data); Arguments data Pointer to interrupt specific data Authors Thomas Gleixner <tglx [at] linutronix.de> Author. Ingo Molnar <mingo [at] elte.hu> Author. Copyright
irq_chip_disable_parent – Disable the parent interrupt (defaults to mask if NULL) Synopsis void irq_chip_disable_parent(struct irq_data *data); Arguments data Pointer to interrupt specific data Authors Thomas Gleixner <tglx [at] linutronix.de> Author. Ingo Molnar <mingo [at] elte.hu> Author. Copyright
irq_chip_compose_msi_msg – Componse msi message for a irq chip Synopsis int irq_chip_compose_msi_msg(struct irq_data *data, struct msi_msg *msg); Arguments data Pointer to interrupt specific data msg Pointer to the MSI message Description For hierarchical domains we find the first chip in the hierarchy which implements the irq_compose_msi_msg callback. For non hierarchical we use the top level…
irq_chip_ack_parent – Acknowledge the parent interrupt Synopsis void irq_chip_ack_parent(struct irq_data *data); Arguments data Pointer to interrupt specific data Authors Thomas Gleixner <tglx [at] linutronix.de> Author. Ingo Molnar <mingo [at] elte.hu> Author. Copyright
irq_alloc_generic_chip – Allocate a generic chip and initialize it Synopsis struct irq_chip_generic *irq_alloc_generic_chip(const char *name, int num_ct, unsigned int irq_base, void __iomem *reg_base, irq_flow_handler_t handler); Arguments name Name of the irq chip num_ct Number of irq_chip_type instances associated with this irq_base Interrupt base nr for this chip reg_base Register base address (virtual) handler Default flow…
iput – put an inode Synopsis void iput(struct inode *inode); Arguments inode inode to put Description Puts an inode, dropping its usage count. If the inode use count hits zero, the inode is then freed and may also be destroyed. Consequently, iput can sleep. Copyright
ipcperms – check ipc permissions Synopsis int ipcperms(struct ipc_namespace *ns, struct kern_ipc_perm *ipcp, short flag); Arguments ns ipc namespace ipcp ipc permission set flag desired permission set Description Check user, group, other permissions for access to ipc resources. return 0 if allowed flag will most probably be 0 or S_…UGO from <linux/stat.h> Copyright
ipcget_public – get an ipc object or create a new one Synopsis int ipcget_public(struct ipc_namespace *ns, struct ipc_ids *ids, const struct ipc_ops *ops, struct ipc_params *params); Arguments ns ipc namespace ids ipc identifier set ops the actual creation routine to call params its parameters Description This routine is called by sys_msgget, sys_semget and sys_shmget when…
ipcget_new – create a new ipc object Synopsis int ipcget_new(struct ipc_namespace *ns, struct ipc_ids *ids, const struct ipc_ops *ops, struct ipc_params *params); Arguments ns ipc namespace ids ipc identifier set ops the actual creation routine to call params its parameters Description This routine is called by sys_msgget, sys_semget and sys_shmget when the key is IPC_PRIVATE….
ipcget – Common sys_*get code Synopsis int ipcget(struct ipc_namespace *ns, struct ipc_ids *ids, const struct ipc_ops *ops, struct ipc_params *params); Arguments ns namespace ids ipc identifier set ops operations to be called on ipc object creation, permission checks and further checks params the parameters needed by the previous operations. Description Common routine called by sys_msgget,…
ipcctl_pre_down_nolock – retrieve an ipc and check permissions for some IPC_XXX cmd Synopsis struct kern_ipc_perm *ipcctl_pre_down_nolock(struct ipc_namespace *ns, struct ipc_ids *ids, int id, int cmd, struct ipc64_perm *perm, int extra_perm); Arguments ns ipc namespace ids the table of ids where to look for the ipc id the id of the ipc to retrieve cmd the…
ipc_update_perm – update the permissions of an ipc object Synopsis int ipc_update_perm(struct ipc64_perm *in, struct kern_ipc_perm *out); Arguments in the permission given as input. out the permission of the ipc to set. Copyright
ipc_rmid – remove an ipc identifier Synopsis void ipc_rmid(struct ipc_ids *ids, struct kern_ipc_perm *ipcp); Arguments ids ipc identifier set ipcp ipc perm structure containing the identifier to remove Description ipc_ids.rwsem (as a writer) and the spinlock for this ID are held before this function is called, and remain locked on the exit. Copyright
ipc_rcu_alloc – allocate ipc and rcu space Synopsis void *ipc_rcu_alloc(int size); Arguments size size desired Description Allocate memory for the rcu header structure + the object. Returns the pointer to the object or NULL upon failure. Copyright
ipc_parse_version – ipc call version Synopsis int ipc_parse_version(int *cmd); Arguments cmd pointer to command Description Return IPC_64 for new style IPC and IPC_OLD for old style IPC. The cmd value is turned from an encoding command and version into just the command code. Copyright
ipc_obtain_object_idr – Synopsis struct kern_ipc_perm *ipc_obtain_object_idr(struct ipc_ids *ids, int id); Arguments ids ipc identifier set id ipc id to look for Description Look for an id in the ipc ids idr and return associated ipc object. Call inside the RCU critical section. The ipc object is *not* locked on exit. Copyright
ipc_obtain_object_check – Synopsis struct kern_ipc_perm *ipc_obtain_object_check(struct ipc_ids *ids, int id); Arguments ids ipc identifier set id ipc id to look for Description Similar to ipc_obtain_object_idr but also checks the ipc object reference counter. Call inside the RCU critical section. The ipc object is *not* locked on exit. Copyright
ipc_lock – lock an ipc structure without rwsem held Synopsis struct kern_ipc_perm *ipc_lock(struct ipc_ids *ids, int id); Arguments ids ipc identifier set id ipc id to look for Description Look for an id in the ipc ids idr and lock the associated ipc object. The ipc object is locked on successful exit. Copyright
ipc_init_proc_interface – create a proc interface for sysipc types using a seq_file interface. Synopsis void ipc_init_proc_interface(const char *path, const char *header, int ids, int (*show)(struct seq_file *, void *)); Arguments path Path in procfs header Banner to be printed at the beginning of the file. ids ipc id table to iterate. show show routine. Copyright