Function report

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:lib\genalloc.c Create Date:2022-07-28 06:56:59
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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Name:gen_pool_has_addr - checks if an address falls within the range of a pool*@pool: the generic memory pool*@start: start address*@size: size of the region* Check if the range of addresses falls within the specified pool. Returns

Proto:bool gen_pool_has_addr(struct gen_pool *pool, unsigned long start, size_t size)

Type:bool

Parameter:

TypeParameterName
struct gen_pool *pool
unsigned longstart
size_tsize
554  bool found = false
555  end = start + size - 1
558  _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
560  If start >= start address of memory chunk && start <= d address of memory chunk (inclusive) Then
561  If end <= d address of memory chunk (inclusive) Then
562  found = true
563  Break
567  _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()
568  Return found