[NET_SCHED 00/10]: ktime clocksource + hrtimer

[Patrick McHardy <kaber@trash.net>]

These patches convert the packet schedulers to use ktime as only clock
source and kill off the manual clock source selection. Additionally all
packet schedulers are converted to use hrtimer-based watchdogs, greatly
increasing scheduling precision.

I've tested HFSC, HTB, TBF and netem. CBQ is untested since I never
managed to get it running properly even without these patches.

I have a number of follow-up cleanup patches that get rid of most of
the remaining PSCHED_* macros, I'll send them once these patches have
been merged.

Please apply, thanks.


 include/net/pkt_sched.h |  182 ++++++------------------------------------------
 kernel/hrtimer.c        |    1 
 net/sched/Kconfig       |   56 --------------
 net/sched/sch_api.c     |  113 ++++++++++-------------------
 net/sched/sch_cbq.c     |  100 ++++++++++++--------------
 net/sched/sch_hfsc.c    |   75 ++++---------------
 net/sched/sch_htb.c     |   93 ++++++++----------------
 net/sched/sch_netem.c   |   25 +-----
 net/sched/sch_tbf.c     |   31 +-------
 9 files changed, 171 insertions(+), 505 deletions(-)

Patrick McHardy:
      [NET_SCHED]: Use ktime as clocksource
      [NET_SCHED]: Add hrtimer based qdisc watchdog
      [NET_SCHED]: sch_hfsc: use hrtimer based watchdog
      [NET_SCHED]: sch_tbf: use hrtimer based watchdog
      [NET_SCHED]: sch_netem: use hrtimer based watchdog
      [NET_SCHED]: sch_cbq: use hrtimer based watchdog
      [NET_SCHED]: sch_cbq: fix cbq_undelay_prio for non-active priorites
      [NET_SCHED]: sch_cbq: use hrtimer for delay_timer
      [NET_SCHED]: sch_htb: use hrtimer based watchdog
      [NET_SCHED]: kill jiffie conversion macros