函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:kernel\softirq.c Create Date:2022-07-27 10:04:02
Last Modify:2022-05-22 11:04:38 Copyright©Brick
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函数名称：This one is for softirq.c-internal use,* where hardirqs are disabled legitimately:

函数原型：static void __local_bh_enable(unsigned int cnt)

返回类型：void

参数：

类型参数名称
unsigned intcnt
144  lockdep_assert_irqs_disabled()
146  如果抢占计数值恒等于cnt则Use defines instead of static inlines because some arches will make code out* of the CALLER_ADDR, when we really want these to be a real nop.(CALLER_ADDR0, get_lock_parent_ip())
149  如果softirq_count()恒等于cnt按位与SOFTIRQ_MASK的值则trace_softirqs_on(_RET_IP_)
152  减少抢占计数
调用者
名称描述
_local_bh_enableSpecial-case - softirqs can safely be enabled by __do_softirq(),* without processing still-pending softirqs:
__do_softirq