From: Linus Torvalds <torvalds@linux-foundation.org>
Date: Mon, 1 Oct 2012 17:43:39 +0000 (-0700)
Subject: Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel... 
X-Git-Tag: firefly_0821_release~3680^2~1997
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=0b981cb94bc63a2d0e5eccccdca75fe57643ffce;p=firefly-linux-kernel-4.4.55.git

Merge branch 'sched-core-for-linus' of git://git./linux/kernel/git/tip/tip

Pull scheduler changes from Ingo Molnar:
 "Continued quest to clean up and enhance the cputime code by Frederic
  Weisbecker, in preparation for future tickless kernel features.

  Other than that, smallish changes."

Fix up trivial conflicts due to additions next to each other in arch/{x86/}Kconfig

* 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (24 commits)
  cputime: Make finegrained irqtime accounting generally available
  cputime: Gather time/stats accounting config options into a single menu
  ia64: Reuse system and user vtime accounting functions on task switch
  ia64: Consolidate user vtime accounting
  vtime: Consolidate system/idle context detection
  cputime: Use a proper subsystem naming for vtime related APIs
  sched: cpu_power: enable ARCH_POWER
  sched/nohz: Clean up select_nohz_load_balancer()
  sched: Fix load avg vs. cpu-hotplug
  sched: Remove __ARCH_WANT_INTERRUPTS_ON_CTXSW
  sched: Fix nohz_idle_balance()
  sched: Remove useless code in yield_to()
  sched: Add time unit suffix to sched sysctl knobs
  sched/debug: Limit sd->*_idx range on sysctl
  sched: Remove AFFINE_WAKEUPS feature flag
  s390: Remove leftover account_tick_vtime() header
  cputime: Consolidate vtime handling on context switch
  sched: Move cputime code to its own file
  cputime: Generalize CONFIG_VIRT_CPU_ACCOUNTING
  tile: Remove SD_PREFER_LOCAL leftover
  ...
---

0b981cb94bc63a2d0e5eccccdca75fe57643ffce
diff --cc arch/Kconfig
index 1a7b468abf4a,101c31a4744b..a62965d057f6
--- a/arch/Kconfig
+++ b/arch/Kconfig
@@@ -294,14 -281,13 +294,23 @@@ config SECCOMP_FILTE
  
  	  See Documentation/prctl/seccomp_filter.txt for details.
  
 +config HAVE_RCU_USER_QS
 +	bool
 +	help
 +	  Provide kernel entry/exit hooks necessary for userspace
 +	  RCU extended quiescent state. Syscalls need to be wrapped inside
 +	  rcu_user_exit()-rcu_user_enter() through the slow path using
 +	  TIF_NOHZ flag. Exceptions handlers must be wrapped as well. Irqs
 +	  are already protected inside rcu_irq_enter/rcu_irq_exit() but
 +	  preemption or signal handling on irq exit still need to be protected.
 +
+ config HAVE_VIRT_CPU_ACCOUNTING
+ 	bool
+ 
+ config HAVE_IRQ_TIME_ACCOUNTING
+ 	bool
+ 	help
+ 	  Archs need to ensure they use a high enough resolution clock to
+ 	  support irq time accounting and then call enable_sched_clock_irqtime().
+ 
  source "kernel/gcov/Kconfig"
diff --cc arch/x86/Kconfig
index 8ff1f56a0188,b86833aed83c..488ba8da8fef
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@@ -100,7 -97,7 +100,8 @@@ config X8
  	select KTIME_SCALAR if X86_32
  	select GENERIC_STRNCPY_FROM_USER
  	select GENERIC_STRNLEN_USER
 +	select HAVE_RCU_USER_QS if X86_64
+ 	select HAVE_IRQ_TIME_ACCOUNTING
  
  config INSTRUCTION_DECODER
  	def_bool (KPROBES || PERF_EVENTS || UPROBES)