函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:lib\xarray.c Create Date:2022-07-27 07:10:56
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：xa_find_after() - Search the XArray for a present entry.*@xa: XArray.*@indexp: Pointer to an index.*@max: Maximum index to search to.*@filter: Selection criterion.* Finds the entry in @xa which matches the @filter and has the lowest

函数原型：void *xa_find_after(struct xarray *xa, unsigned long *indexp, unsigned long max, xa_mark_t filter)

返回类型：void

参数：

类型参数名称
struct xarray *xa
unsigned long *indexp
unsigned longmax
xa_mark_tfilter
1865  XA_STATE() - Declare an XArray operation state.*@name: Name of this operation state (usually xas).*@array: Array to operate on.*@index: Initial index of interest.* Declare and initialise an xa_state on the stack.(xas, xa, * indexp + 1)
1868  如果xa_index恒等于0则返回:NULL
1871  _read_lock() - mark the beginning of an RCU read-side critical section* When synchronize_rcu() is invoked on one CPU while other CPUs* are within RCU read-side critical sections, then the* synchronize_rcu() is guaranteed to block until after all the other
1872  循环
1873  如果filter小于XA_MAX_MARKS则entry等于xas_find_marked() - Find the next marked entry in the XArray.*@xas: XArray operation state.*@max: Highest index to return.*@mark: Mark number to search for.* If the @xas has not yet been walked to an entry, return the marked entry
1875  否则entry等于xas_find() - Find the next present entry in the XArray
1878  如果xas_invalid() - Is the xas in a retry or error state?*@xas: XArray operation state.* Return: %true if the xas cannot be used for operations.则退出
1880  如果xas_sibling( & xas)则继续下一循环
1882  如果非xas_retry() - Retry the operation if appropriate.*@xas: XArray operation state.*@entry: Entry from xarray.* The advanced functions may sometimes return an internal entry, such as* a retry entry or a zero entry. This function sets up the @xas to restart则退出
1885  _read_unlock() - marks the end of an RCU read-side critical section.* In most situations, rcu_read_unlock() is immune from deadlock.* However, in kernels built with CONFIG_RCU_BOOST, rcu_read_unlock()
1887  如果entry则indexp等于xa_index
1889  返回:entry
调用者
名称描述
check_multi_find_1
check_find_4