spin_unlock_irqrestore

如果自旋鎖在中斷處理函數中被用到,那麼在獲取該鎖之前需要關閉本地中斷,spin_lock_irqsave 只是下列動作的一個便利介面: 1 保存本地中斷狀態 2 關閉本地中斷 3 獲取自旋鎖 解鎖時通過 spin_unlock_irqrestore完成釋放鎖、恢複本地中斷到之前的狀態等工作

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  • On an SMP machine we must use spin_lock_irqsave and not spin_lock_irq from interrupt conte...
    linux kernel - spin_lock_irqsave vs spin_lock_irq - Stack ...
    https://stackoverflow.com
  • 如果自旋鎖在中斷處理函數中被用到,那麼在獲取該鎖之前需要關閉本地中斷,spin_lock_irqsave 只是下列動作的一個便利介面: 1 保存本地中斷狀態 2 關閉本地中斷 3 ...
    spin_lock_irqsave和spin_lock - 內核源碼-ChinaUnix.net ...
    http://bbs.chinaunix.net
  • spin_unlock_irqrestore(lock, flags)该宏释放自旋锁lock的同时,也恢复标志寄存器的值为变量flags保存的值。它与spin_lock_irqsa...
    Spin lock的学习 - CSDN博客 - CSDN博客-IT技术写作分享平台
    http://blog.csdn.net
  • spin_lock_irqsave/spin_unlock_irqrestore() spin_lock_bh()/spin_unlock_bh() local_irq_disab...
    Issaac's Blog: 何時使用哪個spin_lock?
    http://issaacliu.blogspot.com
  • 一 、spin_lock_irqsave 、 spin_unlock_irqrestore 如果自旋锁在中断处理函数中被用到,那么在获取该锁之前需要关闭本地中断,spin_lock...
    spin_lock 和 spin_lock_irqsave - chencesc - 博客园
    http://www.cnblogs.com
  • The flags argument passed to spin_unlock_irqrestore must be the same variable passed to sp...
    5.5. Spinlocks - Make Linux
    http://www.makelinux.net
  • 问题是在第一个spin_unlock_irq后这个CPU 的中断已经被打开,“死锁”的问题又会回到我们身边! 解决方法是我们在每次关闭中断前纪录当前中断的状态,然后恢复它而不是直接...
    从spin_lock到spin_lock_irqsave - arm-linux - CSDN博客 ...
    http://blog.csdn.net
  • Almost all CPU time spent in _raw_spin_lock_irqsave Status: CLOSED DUPLICATE of bug 879801...
    Bug 888380 – Almost all CPU time spent in _raw_spin_lock_irq ...
    https://bugzilla.redhat.com
  • spin_unlock_irqrestore(); spin_lock_init(); spin_trylock(); spin_is_locked(); read_lock();...
    spin_lock(); spin_lock_irq(); spin_lock_irqsave(); spin_unlo ...
    https://pastebin.com
  • spin_unlock_irqrestore( &my_spinlock, flags ); spin_lock_irqsave/spin_unlock_irqrestor...
    리눅스 동기화 메서드 분석(하)
    http://www.test104.com