mempool_resize – resize an existing memory pool Synopsis int mempool_resize(mempool_t *pool, int new_min_nr); Arguments pool pointer to the memory pool which was allocated via mempool_create. new_min_nr the new minimum number of elements guaranteed to be allocated for this pool. Description This function shrinks/grows the pool. In the case of growing, it cannot be guaranteed that…
mempool_free – return an element to the pool. Synopsis void mempool_free(void *element, mempool_t *pool); Arguments element pool element pointer. pool pointer to the memory pool which was allocated via mempool_create. Description this function only sleeps if the free_fn function sleeps. Copyright
mempool_destroy – deallocate a memory pool Synopsis void mempool_destroy(mempool_t *pool); Arguments pool pointer to the memory pool which was allocated via mempool_create. Description Free all reserved elements in pool and pool itself. This function only sleeps if the free_fn function sleeps. Copyright
mempool_create – create a memory pool Synopsis mempool_t * mempool_create(int min_nr, mempool_alloc_t * alloc_fn, mempool_free_t * free_fn, void * pool_data); Arguments min_nr the minimum number of elements guaranteed to be allocated for this pool. alloc_fn user-defined element-allocation function. free_fn user-defined element-freeing function. pool_data optional private data available to the user-defined functions. Description this function creates and allocates a guaranteed size, preallocated memory…
mempool_alloc – allocate an element from a specific memory pool Synopsis void *mempool_alloc(mempool_t *pool, gfp_t gfp_mask); Arguments pool pointer to the memory pool which was allocated via mempool_create. gfp_mask the usual allocation bitmask. Description this function only sleeps if the alloc_fn function sleeps or returns NULL. Note that due to preallocation, this function *never* fails…
memparse – parse a string with mem suffixes into a number Synopsis unsigned long long memparse(const char *ptr, char **retptr); Arguments ptr Where parse begins retptr (output) Optional pointer to next char after parse completes Description Parses a string into a number. The number stored at ptr is potentially suffixed with K, M, G, T,…
memmove – Copy one area of memory to another Synopsis void *memmove(void *dest, const void *src, size_t count); Arguments dest Where to copy to src Where to copy from count The size of the area. Description Unlike memcpy, memmove copes with overlapping areas. Copyright
memdup_user_nul – duplicate memory region from user space and NUL-terminate Synopsis void *memdup_user_nul(const void __user *src, size_t len); Arguments src source address in user space len number of bytes to copy Description Returns an ERR_PTR on failure. Copyright
memdup_user – duplicate memory region from user space Synopsis void *memdup_user(const void __user *src, size_t len); Arguments src source address in user space len number of bytes to copy Description Returns an ERR_PTR on failure. Copyright
memcpy – Copy one area of memory to another Synopsis void *memcpy(void *dest, const void *src, size_t count); Arguments dest Where to copy to src Where to copy from count The size of the area. Description You should not use this function to access IO space, use memcpy_toio or memcpy_fromio instead. Copyright
memcmp – Compare two areas of memory Synopsis __visible int memcmp(const void * cs, const void * ct, size_t count); Arguments cs One area of memory ct Another area of memory count The size of the area. Copyright
memchr_inv – Find an unmatching character in an area of memory. Synopsis void *memchr_inv(const void *start, int c, size_t bytes); Arguments start The memory area c Find a character other than c bytes The size of the area. Description returns the address of the first character other than c, or NULL if the whole buffer…
memchr – Find a character in an area of memory. Synopsis void *memchr(const void *s, int c, size_t n); Arguments s The memory area c The byte to search for n The size of the area. Description returns the address of the first occurrence of c, or NULL if c is not found Copyright
mdiobus_write_nested – Nested version of the mdiobus_write function Synopsis int mdiobus_write_nested(struct mii_bus *bus, int addr, u32 regnum, u16 val); Arguments bus the mii_bus struct addr the phy address regnum register number to write val value to write to regnum Description In case of nested MDIO bus access avoid lockdep false positives by using mutex_lock_nested. Note…
mdiobus_write – Convenience function for writing a given MII mgmt register Synopsis int mdiobus_write(struct mii_bus *bus, int addr, u32 regnum, u16 val); Arguments bus the mii_bus struct addr the phy address regnum register number to write val value to write to regnum Note MUST NOT be called from interrupt context, because the bus read/write functions…
mdiobus_scan – scan a bus for MDIO devices. Synopsis struct phy_device *mdiobus_scan(struct mii_bus *bus, int addr); Arguments bus mii_bus to scan addr address on bus to scan Description This function scans the MDIO bus, looking for devices which can be identified using a vendor/product ID in registers 2 and 3. Not all MDIO devices have…
mdiobus_release – mii_bus device release callback Synopsis void mdiobus_release(struct device *d); Arguments d the target struct device that contains the mii_bus Description called when the last reference to an mii_bus is dropped, to free the underlying memory. Copyright
mdiobus_read_nested – Nested version of the mdiobus_read function Synopsis int mdiobus_read_nested(struct mii_bus *bus, int addr, u32 regnum); Arguments bus the mii_bus struct addr the phy address regnum register number to read Description In case of nested MDIO bus access avoid lockdep false positives by using mutex_lock_nested. Note MUST NOT be called from interrupt context, because…
mdiobus_read – Convenience function for reading a given MII mgmt register Synopsis int mdiobus_read(struct mii_bus *bus, int addr, u32 regnum); Arguments bus the mii_bus struct addr the phy address regnum register number to read Note MUST NOT be called from interrupt context, because the bus read/write functions may wait for an interrupt to conclude the…
mdiobus_free – free a struct mii_bus Synopsis void mdiobus_free(struct mii_bus *bus); Arguments bus mii_bus to free Description This function releases the reference to the underlying device object in the mii_bus. If this is the last reference, the mii_bus will be freed. Copyright