Anton Ivanov 2eb5f31bc4 um: Switch clocksource to hrtimers ... UML is using an obsolete itimer call for all timers and "polls" for kernel space timer firing in its userspace portion resulting in a long list of bugs and incorrect behaviour(s). It also uses ITIMER_VIRTUAL for its timer which results in the timer being dependent on it running and the cpu load. This patch fixes this by moving to posix high resolution timers firing off CLOCK_MONOTONIC and relaying the timer correctly to the UML userspace. Fixes: - crashes when hosts suspends/resumes - broken userspace timers - effecive ~40Hz instead of what they should be. Note - this modifies skas behavior by no longer setting an itimer per clone(). Timer events are relayed instead. - kernel network packet scheduling disciplines - tcp behaviour especially under load - various timer related corner cases Finally, overall responsiveness of userspace is better. Signed-off-by: Thomas Meyer <thomas@m3y3r.de> Signed-off-by: Anton Ivanov <aivanov@brocade.com> [rw: massaged commit message] Signed-off-by: Richard Weinberger <richard@nod.at>		2015-11-06 22:54:49 +01:00
..
skas	um: Switch clocksource to hrtimers	2015-11-06 22:54:49 +01:00
aio.h
arch.h	um: get rid of pointless include "..." where include <...> will do	2012-10-09 22:28:45 +02:00
as-layout.h	um: Move uml_postsetup in the init_thread stack	2015-04-13 21:17:44 +02:00
common-offsets.h	nohz: Rename CONFIG_NO_HZ to CONFIG_NO_HZ_COMMON	2013-04-03 13:56:03 +02:00
elf_user.h
frame_kern.h	um: Use get_signal() signal_setup_done()	2014-08-06 13:03:41 +02:00
init.h	um: Remove copy&paste code from init.h	2015-05-31 22:17:08 +02:00
irq_kern.h	um: get rid of pointless include "..." where include <...> will do	2012-10-09 22:28:45 +02:00
irq_user.h	um: get rid of pointless include "..." where include <...> will do	2012-10-09 22:28:45 +02:00
kern_util.h	um: Fix do_signal() prototype	2015-07-07 10:58:54 +02:00
kern.h	um: trim kern.h	2011-11-02 14:15:07 +01:00
longjmp.h	um: get rid of pointless include "..." where include <...> will do	2012-10-09 22:28:45 +02:00
mem_user.h	um: delete unnecessary bootmem struct page array	2014-10-13 17:15:09 +02:00
mem.h
net_kern.h	um: net: use eth_hw_addr_random() to generate random mac	2013-01-03 22:37:36 -08:00
net_user.h	uml: UML net driver does not allow for vlans	2009-06-16 19:47:46 -07:00
os.h	um: Switch clocksource to hrtimers	2015-11-06 22:54:49 +01:00
ptrace_user.h	um: unify ptrace_user.h	2011-11-02 14:15:27 +01:00
registers.h	um: get rid of pointless include "..." where include <...> will do	2012-10-09 22:28:45 +02:00
sigio.h
timer-internal.h	um: Switch clocksource to hrtimers	2015-11-06 22:54:49 +01:00
um_malloc.h	um: get rid of kern_constants.h	2011-11-02 14:14:45 +01:00
user.h	um: Stop abusing __KERNEL__	2015-05-31 22:05:32 +02:00