WebJun 19, 2024 · [v5,4/7] dmaengine: imx-sdma: remove useless 'lock' and 'enabled' in 'struct sdma_channel' Message ID [email protected] ( mailing list archive ) Webspin_lock_bh - disables software interrupts and acquire given spinlock; spin_lock_irqsave and spin_lock_irq - disable interrupts on local processor and preserve/not preserve previous interrupt state in the flags; spin_unlock - releases given spinlock and acquire given spinlock;
[PATCH] locking/spinlock: Remove the unused …
Web* spin_unlock (S); * * it is forbidden that CPU0's critical section executes before CPU1's * critical section (r0 = 1), CPU2 observes CPU1's store to Y (r1 = 1) * and CPU2 does not … WebApr 1, 2024 · To achieve this, the kernel provides _irqsave variant functions. These behave just like the _irq ones, while also saving and restoring the interrupts status feature. These functions are... mercedes a class advantage package
linux kernel - spin_lock_irqsave - スピンロック_irqsave対スピン …
WebNov 3, 2007 · spin_lock_irq/spin_unlock_irq，如果既要和irq及其他CPU互斥，又要保存 EFLAG的狀態，就要用spin_lock_irqsave/spin_unlock_irqrestore，如果 要和bh及其他CPU互斥，就要用spin_lock_bh/spin_unlock_bh，如果不需要和 其他CPU互斥，只要和irq互斥，則用local_irq_disable/local_irq_enable， 如果不需要和其他CPU互斥，只要和bh互斥，則 … WebNov 25, 2024 · The referenced spinlock seems to be only used by PID#12: crash> qspinlock ffffffffa5279600 struct qspinlock { { val = { counter = 0x101 }, { locked = 0x1, pending = … WebApr 3, 2024 · 60. * inlining all over the place, but here is only one user per function. 61. * which embeds them into the calling _lock_function below. 62. *. 63. * This could be a long-held lock. We both prepare to spin for a long. mercedes a class alloy wheels uk