Add libtpool (thread pools)

mirror of https://git.proxmox.com/git/mirror_zfs.git synced 2026-05-22 18:40:43 +03:00

OpenZFS provides a library called tpool which implements thread
pools for user space applications.  Porting this library means
the zpool utility no longer needs to borrow the kernel mutex and
taskq interfaces from libzpool.  This code was updated to use
the tpool library which behaves in a very similar fashion.

Porting libtpool was relatively straight forward and minimal
modifications were needed.  The core changes were:

* Fully convert the library to use pthreads.
* Updated signal handling.
* lmalloc/lfree converted to calloc/free
* Implemented portable pthread_attr_clone() function.

Finally, update the build system such that libzpool.so is no
longer linked in to zfs(8), zpool(8), etc.  All that is required
is libzfs to which the zcommon soures were added (which is the way
it always should have been).  Removing the libzpool dependency
resulted in several build issues which needed to be resolved.

* Moved zfeature support to module/zcommon/zfeature_common.c
* Moved ratelimiting to to module/zfs/zfs_ratelimit.c
* Moved get_system_hostid() to lib/libspl/gethostid.c
* Removed use of cmn_err() in zcommon source
* Removed dprintf_setup() call from zpool_main.c and zfs_main.c
* Removed highbit() and lowbit()
* Removed unnecessary library dependencies from Makefiles
* Removed fletcher-4 kstat in user space
* Added sha2 support explicitly to libzfs
* Added highbit64() and lowbit64() to zpool_util.c

Reviewed-by: Tony Hutter <hutter2@llnl.gov>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #6442

This commit is contained in:

Brian Behlendorf

2017-08-09 15:31:08 -07:00

committed by

GitHub

parent 5146d802b4

commit 46364cb2f3

46 changed files with 1191 additions and 410 deletions

									
										include/sys/zfs_context.h
									
		-4
	
												View File
												
				@@ -668,15 +668,11 @@ extern uint64_t physmem;

				extern int highbit64(uint64_t i);

				extern int lowbit64(uint64_t i);

				extern int highbit(ulong_t i);

				extern int lowbit(ulong_t i);

				extern int random_get_bytes(uint8_t *ptr, size_t len);

				extern int random_get_pseudo_bytes(uint8_t *ptr, size_t len);

				extern void kernel_init(int);

				extern void kernel_fini(void);

				extern void thread_init(void);

				extern void thread_fini(void);

				extern void random_init(void);

				extern void random_fini(void);