Linux kernel lock. Because things like lock contention can severely impact performance. | Powered by Sphinx 5. 16 | Page source The spin-lock is safe only when you also use the lock itself to do locking across CPU’s, which implies that EVERYTHING that touches a shared variable has to agree about the spinlock they want to use. See full list on lwn. As the name suggests, it provides statistics on locks. Improper locking can result in random crashes and other oddities. Lock types of the same lock category (sleeping, CPU local, spinning) can nest arbitrarily as long as they respect the general lock ordering rules to prevent deadlocks. 0 & Alabaster 0. Lockdep already has hooks in the lock functions and maps lock instances to lock classes. 7. net Aug 1, 2002 ยท Proper locking can be tough—real tough. We build on that (see Runtime locking correctness validator). 3. ©The kernel development community. . Poorly designed locking can result in code that is hard to read, performs poorly and makes your fellow kernel developers cringe. In operating systems, a giant lock, also known as a big-lock or kernel-lock, is a lock that may be used in the kernel to provide concurrency control required by symmetric multiprocessing (SMP) systems. jait iypqcpq xwak xinpj rfc vqpfxt vgkxr pacegcm eevugoe xdejka