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Brian Behlendorf
366346c565
This branch contains kmem cache optimizations designed to resolve the lockups reported in zfsonlinux/zfs#922. The lockups were largely the result of spin lock contention in the slab under low memory conditions. Fundamentally, these changes are all designed to minimize that contention though a variety of methods. * Improved vmem cached deadlock detection * Track emergency objects in rbtree * Optimize spl_kmem_cache_free() * Never spin in kmem_cache_alloc() Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> zfsonlinux/zfs#922
The Solaris Porting Layer (SPL) is a Linux kernel module which provides many of the Solaris kernel APIs. This shim layer makes it possible to run Solaris kernel code in the Linux kernel with relatively minimal modification. This can be particularly useful when you want to track upstream Solaris development closely and don’t want the overhead of maintaining a large patch which converts Solaris primitives to Linux primitives.
To build packages for your distribution:
$ ./configure
$ make pkg
To copy the kernel code inside your kernel source tree for builtin compilation:
$ ./configure --enable-linux-builtin --with-linux=/usr/src/linux-...
$ ./copy-builtin /usr/src/linux-...
Full documentation for building, configuring, and using the SPL can be found at: http://zfsonlinux.org