函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:kernel\smp.c Create Date:2022-07-27 11:56:01
Last Modify:2020-03-17 15:12:54 Copyright©Brick
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函数名称：sd_lock/csd_unlock used to serialize access to per-cpu csd resources* For non-synchronous ipi calls the csd can still be in use by the* previous function call. For multi-cpu calls its even more interesting

函数原型：static __always_inline void csd_lock_wait(call_single_data_t *csd)

返回类型：void

参数：

类型参数名称
call_single_data_t *csd
109  smp_cond_load_acquire() - (Spin) wait for cond with ACQUIRE ordering*@ptr: pointer to the variable to wait on*@cond: boolean expression to wait for* Equivalent to using smp_load_acquire() on the condition variable but employs( & flags, !(VAL & CSD_FLAG_LOCK))
调用者
名称描述
csd_lock
smp_call_function_singlesmp_call_function_single - Run a function on a specific CPU*@func: The function to run. This must be fast and non-blocking.*@info: An arbitrary pointer to pass to the function.*@wait: If true, wait until function has completed on other CPUs.
smp_call_function_single_asyncsmp_call_function_single_async(): Run an asynchronous function on a* specific CPU.*@cpu: The CPU to run on.*@csd: Pre-allocated and setup data structure* Like smp_call_function_single(), but the call is asynchonous and
smp_call_function_manysmp_call_function_many(): Run a function on a set of other CPUs