freebsd-dev/sys/i386
Mark Johnston dbbaf04f1e Remove support for idle page zeroing.
Idle page zeroing has been disabled by default on all architectures since
r170816 and has some bugs that make it seemingly unusable. Specifically,
the idle-priority pagezero thread exacerbates contention for the free page
lock, and yields the CPU without releasing it in non-preemptive kernels. The
pagezero thread also does not behave correctly when superpage reservations
are enabled: its target is a function of v_free_count, which includes
reserved-but-free pages, but it is only able to zero pages belonging to the
physical memory allocator.

Reviewed by:	alc, imp, kib
Differential Revision:	https://reviews.freebsd.org/D7714
2016-09-03 20:38:13 +00:00
..
acpica If x86 CPU implementation of the MWAIT instruction reasonably 2015-05-09 12:28:48 +00:00
bios Make it explicit that D_MEM cdevsw d_flag is to signify that the 2016-05-01 17:46:56 +00:00
cloudabi32 Convert pointers obtained from the threadattr_t structure with TO_PTR(). 2016-08-24 10:13:18 +00:00
conf Make CloudABI work on i386. 2016-08-22 17:37:31 +00:00
i386 Remove support for idle page zeroing. 2016-09-03 20:38:13 +00:00
ibcs2 Don't create pointless backups of generated files in "make sysent". 2016-07-28 21:29:04 +00:00
include Remove support for idle page zeroing. 2016-09-03 20:38:13 +00:00
isa Remove the spic(4) driver for the Sony Vaoi Jogdial. 2016-08-19 23:39:08 +00:00
linux Don't create pointless backups of generated files in "make sysent". 2016-07-28 21:29:04 +00:00
pci As <machine/pmap.h> is included from <vm/pmap.h>, there is no need to 2016-02-22 09:02:20 +00:00
svr4 sys: use our roundup2/rounddown2() macros when param.h is available. 2016-04-21 19:57:40 +00:00
xbox After r261980, the local ptr variable in xbox_init() is no longer used, 2014-02-16 22:48:36 +00:00
Makefile Delete duplicate tags entry I introduced in -r223901. 2011-07-15 17:27:26 +00:00