freebsd-dev/sys/compat
Konstantin Belousov 5e27d79314 Split kerne timekeep ABI structure vdso_sv_tk out of the struct
sysentvec.  This allows the timekeep data to be shared between similar
ABIs which cannot share sysentvec.

Make the timekeep_push_vdso() tick callback to the timekeep structures
instead of sysentvecs.  If several sysentvec share the vdso_sv_tk
structure, we would update the userspace data several times on each
tick, without the change.

Only allocate vdso_sv_tk in the exec_sysvec_init() sysinit when
sysentvec is marked with the new SV_TIMEKEEP flag.  This saves
allocation and update of unneeded vdso_sv_tk for ABIs which do not
provide userspace gettimeofday yet, which are PowerPCs arches right
now.

Make vdso_sv_tk allocator public, namely split out and export
alloc_sv_tk() and alloc_sv_tk_compat32().  ABIs which share timekeep
data now can allocate it manually and share as appropriate.

Requested by:	nwhitehorn
Tested by:	nwhitehorn, pho
Sponsored by:	The FreeBSD Foundation
MFC after:	2 weeks
2015-11-23 07:09:35 +00:00
..
cloudabi Properly format pointer size independent CloudABI system calls. 2015-10-08 05:27:45 +00:00
cloudabi64 Refactoring: move out generic bits from cloudabi64_sysvec.c. 2015-10-22 09:07:53 +00:00
freebsd32 Regenerate syscalls. 2015-07-11 15:22:11 +00:00
ia32 Split kerne timekeep ABI structure vdso_sv_tk out of the struct 2015-11-23 07:09:35 +00:00
linprocfs Add support to the jail framework to be able to mount linsysfs(5) and 2015-07-19 08:52:35 +00:00
linsysfs Add support to the jail framework to be able to mount linsysfs(5) and 2015-07-19 08:52:35 +00:00
linux Fix build for the KTR-enabled kernels. 2015-10-23 11:41:55 +00:00
linuxkpi/common Add assert and note about the size of "unsigned long" inside the 2015-11-13 09:00:39 +00:00
ndis Create a dedicated function for ensuring that cdir and rdir are populated. 2015-07-11 16:22:48 +00:00
netbsd Remove some more NetBSD compat shims and other unused bits from these 2012-09-10 18:49:49 +00:00
svr4 The si_status field of the siginfo_t, provided by the waitid(2) and 2015-07-18 09:02:50 +00:00
x86bios Pull in r267961 and r267973 again. Fix for issues reported will follow. 2014-06-28 03:56:17 +00:00