除了smp_rmb()函数外,Linux内核还提供了其他类似的内存屏障函数,如smp_wmb()和smp_mb()等。这些函数在不同场合下用于确保内存操作的顺序性和一致性,从而保证多处理器系统的稳定性和性能。 总的来说,smp_rmb()函数在Linux内核中起着至关重要的作用,它保证了多处理器系统中的数据一致性和内存操作的顺序性。程序...
I removed this last week because of an incorrect comment: smp_mb__after_spinlock() is actually still used, and is necessary on RISC-V. It's been resurrected, with a comment that describes what it actually does this time. Thanks to Andrea for finding the bug! Fixes:3343eb6("RISC-V: ...