Alexander Motin f3969ea78b Optimize small random numbers generation ...

In all places except two spa_get_random() is used for small values,
and the consumers do not require well seeded high quality values.
Switch those two exceptions directly to random_get_pseudo_bytes()
and optimize spa_get_random(), renaming it to random_in_range(),
since it is not related to SPA or ZFS in general.

On FreeBSD directly map random_in_range() to new prng32_bounded() KPI
added in FreeBSD 13.  On Linux and in user-space just reduce the type
used to uint32_t to avoid more expensive 64bit division.

Reviewed-by: Ryan Moeller <ryan@iXsystems.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Alexander Motin <mav@FreeBSD.org>
Sponsored-By: iXsystems, Inc.
Closes #12183

2021-09-14 12:10:17 -07:00

..

abd_os.c

Use wmsum for arc, abd, dbuf and zfetch statistics. (#12172)

2021-06-24 13:10:59 -07:00

arc_os.c

Optimize small random numbers generation

2021-09-14 12:10:17 -07:00

Makefile.in

Restore FreeBSD resource usage accounting

2021-02-19 22:34:33 -08:00

mmp_os.c

Add zfs_multihost_interval tunable handler for FreeBSD

2020-06-23 13:32:42 -07:00

policy.c

Linux 5.12 compat: idmapped mounts

2021-03-19 21:00:59 -07:00

qat_compress.c

Fix QAT allocation failure return value

2020-01-06 11:17:53 -08:00

qat_crypt.c

QAT related bug fixes

2019-09-12 13:33:44 -07:00

qat.c

QAT related bug fixes

2019-09-12 13:33:44 -07:00

spa_misc_os.c

Make spa_history_zone platform-dependent in kernel

2020-03-02 09:43:30 -08:00

trace.c

Enable use of DTRACE_PROBE* macros in "spl" module

2019-11-01 13:13:43 -07:00

vdev_disk.c

Linux 5.12 update: bio_max_segs() replaces BIO_MAX_PAGES

2021-03-19 22:33:42 -07:00

vdev_file.c

Distributed Spare (dRAID) Feature

2020-11-13 13:51:51 -08:00

zfs_acl.c

Intentionally allow ZFS_READONLY in zfs_write

2021-03-07 09:31:52 -08:00

zfs_ctldir.c

Linux: always check or verify return of igrab()

2021-03-16 16:33:34 -07:00

zfs_debug.c

Annotated dprintf as printf-like

2021-06-24 13:12:36 -07:00

zfs_dir.c

Clean up use of zfs_log_create in zfs_dir

2021-05-10 12:16:32 -07:00

zfs_file_os.c

linux: don't fall through to 3-arg vfs_getattr

2021-05-27 22:31:57 -07:00

zfs_ioctl_os.c

libzfs: On FreeBSD, use MNT_NOWAIT with getfsstat

2021-06-09 13:05:34 -07:00

zfs_racct.c

Restore FreeBSD resource usage accounting

2021-02-19 22:34:33 -08:00

zfs_sysfs.c

Persistent L2ARC

2020-04-10 10:33:35 -07:00

zfs_uio.c

Removing old code for k(un)map_atomic

2021-03-19 22:38:44 -07:00

zfs_vfsops.c

Linux: always check or verify return of igrab()

2021-03-16 16:33:34 -07:00

zfs_vnops_os.c

Return required size when encode_fh size too small

2021-05-10 12:13:45 -07:00

zfs_znode.c

Do not hash unlinked inodes

2021-06-15 16:56:19 -07:00

zio_crypt.c

gcc 11 cleanup

2021-06-24 13:13:40 -07:00

zpl_ctldir.c

Linux 5.12 compat: idmapped mounts

2021-03-19 21:00:59 -07:00

zpl_export.c

Return required size when encode_fh size too small

2021-05-10 12:13:45 -07:00

zpl_file.c

Remove iov_iter_advance() for iter_write

2021-06-09 13:05:34 -07:00

zpl_inode.c

Update tmpfile() existence detection

2021-05-27 22:31:56 -07:00

zpl_super.c

Linux: Fix ZFS_ENTER/ZFS_EXIT/ZFS_VERFY_ZP usage

2020-11-14 10:19:00 -08:00

zpl_xattr.c

Bend zpl_set_acl to permit the new userns* parameter

2021-05-27 22:31:57 -07:00

zvol_os.c

linux 5.13 compat: bdevops->revalidate_disk() removed

2021-05-27 22:09:26 -07:00