in C source file to define option features.
Define proper options in each Makefile per ${MACHINE_ARCH} variable instead.
Previously if a host is x86 and it has /usr/mdec/mbr file in its system,
tools fdisk implicitly installs it as mbr bootcode even for !x86 targets.
Instead, explicitly zap only possible first backups and FFS superblocks.
Fixes "Extreamly slow newfs_ext2fs on 60Gb USB stick" problem
reported by Aleksey Cheusov on tech-kern@.
Adapt dholland@'s fix to ufs_rename to fix PR kern/43582. Address several
other MP locking issues discovered during the course of investigating the
same problem.
Removed extraneous vn_lock() calls on the Ifile, since the Ifile writes
are controlled by the segment lock.
Fix PR kern/45982 by deemphasizing the estimate of how much metadata
will fill the empty space on disk when the disk is nearly empty
(t_renamerace crates a lot of inode blocks on a tiny empty disk).
kernel vfs_mountroot() and bootloaders from mis-recognizing
the newfs(8)'ed file system as still Ext2fs.
The problem is reported and the fix is tested by Frank Wille
on current-users@. Also approved by releng.
1) Move core entropy-pool code and source/sink/sample management code
to sys/kern from sys/dev.
2) Remove use of NRND as test for presence of entropy-pool code throughout
source tree.
3) Remove use of RND_ENABLED in device drivers as microoptimization to
avoid expensive operations on disabled entropy sources; make the
rnd_add calls do this directly so all callers benefit.
4) Fix bug in recent rnd_add_data()/rnd_add_uint32() changes that might
have lead to slight entropy overestimation for some sources.
5) Add new source types for environmental sensors, power sensors, VM
system events, and skew between clocks, with a sample implementation
for each.
ok releng to go in before the branch due to the difficulty of later
pullup (widespread #ifdef removal and moved files). Tested with release
builds on amd64 and evbarm and live testing on amd64.
This allows the lfs_renamerace_dirs case of the t_renamerace test to
fail correctly, rather than with a bogus "file system full" error as it
has since rev 1.135 of sys/ufs/lfs/lfs.h.
