sget – find or create a superblock Synopsis struct super_block *sget(struct file_system_type *type, int (*test)(struct super_block *, void *), int (*set)(struct super_block *, void *), int flags, void *data); Arguments type filesystem type superblock should belong to test comparison callback set setup callback flags mount flags data argument to each of them Copyright
setup_per_zone_wmarks – called when min_free_kbytes changes or when memory is hot-{added|removed} Synopsis void setup_per_zone_wmarks(void); Arguments void no arguments Description Ensures that the watermark[min,low,high] values for each zone are set correctly with respect to min_free_kbytes. Copyright
setup_irq – setup an interrupt Synopsis int setup_irq(unsigned int irq, struct irqaction *act); Arguments irq Interrupt line to setup act irqaction for the interrupt Description Used to statically setup interrupts in the early boot process. Copyright
set_pfnblock_flags_mask – Set the requested group of flags for a pageblock_nr_pages block of pages Synopsis void set_pfnblock_flags_mask(struct page *page, unsigned long flags, unsigned long pfn, unsigned long end_bitidx, unsigned long mask); Arguments page The page within the block of interest flags The flags to set pfn The target page frame number end_bitidx The last bit…
set_nlink – directly set an inode’s link count Synopsis void set_nlink(struct inode *inode, unsigned int nlink); Arguments inode inode nlink new nlink (should be non-zero) Description This is a low-level filesystem helper to replace any direct filesystem manipulation of i_nlink. Copyright
set_dma_reserve – set the specified number of pages reserved in the first zone Synopsis void set_dma_reserve(unsigned long new_dma_reserve); Arguments new_dma_reserve The number of pages to mark reserved Description The per-cpu batchsize and zone watermarks are determined by managed_pages. In the DMA zone, a significant percentage may be consumed by kernel image and other unfreeable allocations…
set_bit – Atomically set a bit in memory Synopsis void set_bit(long nr, volatile unsigned long *addr); Arguments nr the bit to set addr the address to start counting from Description This function is atomic and may not be reordered. See __set_bit if you do not require the atomic guarantees. Note there are no guarantees that…
seq_write – write arbitrary data to buffer Synopsis int seq_write(struct seq_file *seq, const void *data, size_t len); Arguments seq seq_file identifying the buffer to which data should be written data data address len number of bytes Description Return 0 on success, non-zero otherwise. Copyright
seq_release – free the structures associated with sequential file. Synopsis int seq_release(struct inode *inode, struct file *file); Arguments inode its inode file file in question Description Frees the structures associated with sequential file; can be used as ->f_op->release if you don’t have private data to destroy. Copyright
seq_read – ->read method for sequential files. Synopsis ssize_t seq_read(struct file * file, char __user * buf, size_t size, loff_t * ppos); Arguments file the file to read from buf the buffer to read to size the maximum number of bytes to read ppos the current position in the file Description Ready-made ->f_op->read Copyright
seq_path – seq_file interface to print a pathname Synopsis int seq_path(struct seq_file *m, const struct path *path, const char *esc); Arguments m the seq_file handle path the struct path to print esc set of characters to escape in the output Description return the absolute path of ‘path’, as represented by the dentry / mnt pair…
seq_pad – write padding spaces to buffer Synopsis void seq_pad(struct seq_file *m, char c); Arguments m seq_file identifying the buffer to which data should be written c the byte to append after padding if non-zero Copyright
seq_open – initialize sequential file Synopsis int seq_open(struct file *file, const struct seq_operations *op); Arguments file file we initialize op method table describing the sequence Description seq_open sets file, associating it with a sequence described by op. op->start sets the iterator up and returns the first element of sequence. op->stop shuts it down. op->next returns…
seq_lseek – ->llseek method for sequential files. Synopsis loff_t seq_lseek(struct file * file, loff_t offset, int whence); Arguments file the file in question offset new position whence 0 for absolute, 1 for relative position Description Ready-made ->f_op->llseek Copyright
seq_hlist_start_rcu – start an iteration of a hlist protected by RCU Synopsis struct hlist_node *seq_hlist_start_rcu(struct hlist_head *head, loff_t pos); Arguments head the head of the hlist pos the start position of the sequence Description Called at seq_file->op->start. This list-traversal primitive may safely run concurrently with the _rcu list-mutation primitives such as hlist_add_head_rcu as long as…
seq_hlist_start_percpu – start an iteration of a percpu hlist array Synopsis struct hlist_node *seq_hlist_start_percpu(struct hlist_head __percpu *head, int *cpu, loff_t pos); Arguments head pointer to percpu array of struct hlist_heads cpu pointer to cpu “cursor” pos start position of sequence Description Called at seq_file->op->start. Copyright
seq_hlist_start_head_rcu – start an iteration of a hlist protected by RCU Synopsis struct hlist_node *seq_hlist_start_head_rcu(struct hlist_head *head, loff_t pos); Arguments head the head of the hlist pos the start position of the sequence Description Called at seq_file->op->start. Call this function if you want to print a header at the top of the output. This list-traversal…
seq_hlist_start_head – start an iteration of a hlist Synopsis struct hlist_node *seq_hlist_start_head(struct hlist_head *head, loff_t pos); Arguments head the head of the hlist pos the start position of the sequence Description Called at seq_file->op->start. Call this function if you want to print a header at the top of the output. Copyright
seq_hlist_start – start an iteration of a hlist Synopsis struct hlist_node *seq_hlist_start(struct hlist_head *head, loff_t pos); Arguments head the head of the hlist pos the start position of the sequence Description Called at seq_file->op->start. Copyright
seq_hlist_next_rcu – move to the next position of the hlist protected by RCU Synopsis struct hlist_node *seq_hlist_next_rcu(void *v, struct hlist_head *head, loff_t *ppos); Arguments v the current iterator head the head of the hlist ppos the current position Description Called at seq_file->op->next. This list-traversal primitive may safely run concurrently with the _rcu list-mutation primitives such…