spin_lock_irqsave example

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spin_lock_irqsave example

... unsigned long flags; spin_lock_irqsave(&xxx_lock, flags); ... critical section here ... (for example, internal driver data structures that nobody else ever touches). , printk("sample driver removed. .... printk(KERN_ALERT "sample driver installed. .... spin_lock_irqsave(spinlock_t *lock, unsigned long flags);,If the spinlock was locked using the function spin_lock_irqsave, then the state of the interrupts which was stored also needs to be restored. Thus this function not ... , 1 Answer. void spin_lock(spinlock_t *lock); void spin_lock_irqsave(spinlock_t *lock, unsigned long flags); void spin_lock_irq(spinlock_t *lock); spin_lock_irqsave disables interrupts (on the local processor only) before taking the spinlock; the previous , If you save the flags and release it with the flags, the function spin_lock_irqsave will just return the interrupt to its previous state. Example with ..., void spin_lock_irqsave(spinlock_t *lock, unsigned long flags); real example: +void object_put(struct object *obj) + + unsigned long flags; +,Example: net/netfilter/nf_sockopt.c allows registration of new setsockopt() ... In that sense, spin_lock_irqsave() is the most general and powerful locking function. , 在這個檔案裡定義了spin_lock_irqsave() 及spin_lock_irqrestore() 這兩個function。 #define spin_lock_irqsave(lock,flags) do while (0)

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spin_lock_irqsave example 相關參考資料
Kernel documentation - spinlocks

... unsigned long flags; spin_lock_irqsave(&xxx_lock, flags); ... critical section here ... (for example, internal driver data structures that nobody else ever touches).

https://www.kernel.org

LDDP:十、同步與鎖定@ BOOK :: 痞客邦::

printk("sample driver removed. .... printk(KERN_ALERT "sample driver installed. .... spin_lock_irqsave(spinlock_t *lock, unsigned long flags);

http://silverfoxkkk.pixnet.net

Spinlocks in linux - Linux World

If the spinlock was locked using the function spin_lock_irqsave, then the state of the interrupts which was stored also needs to be restored. Thus this function not ...

http://tuxthink.blogspot.com

spin_lock vs. spin_lock_irq vs. spin_lock_irqsave - Unix & Linux ...

1 Answer. void spin_lock(spinlock_t *lock); void spin_lock_irqsave(spinlock_t *lock, unsigned long flags); void spin_lock_irq(spinlock_t *lock); spin_lock_irqsave disables interrupts (on the local pr...

https://unix.stackexchange.com

spin_lock_irqsave vs spin_lock_irq - Stack Overflow

If you save the flags and release it with the flags, the function spin_lock_irqsave will just return the interrupt to its previous state. Example with ...

https://stackoverflow.com

spin_lock_irqsave()中的flags初始化- 兰宝的专栏- CSDN博客

void spin_lock_irqsave(spinlock_t *lock, unsigned long flags); real example: +void object_put(struct object *obj) + + unsigned long flags; +

https://blog.csdn.net

Unreliable Guide To Locking — The Linux Kernel 4.7 ...

Example: net/netfilter/nf_sockopt.c allows registration of new setsockopt() ... In that sense, spin_lock_irqsave() is the most general and powerful locking function.

https://kernel.readthedocs.io

[轉]Spinlock 簡介@ H's 手札:: 痞客邦::

在這個檔案裡定義了spin_lock_irqsave() 及spin_lock_irqrestore() 這兩個function。 #define spin_lock_irqsave(lock,flags) do while (0)

http://huenlil.pixnet.net