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yaml
---
r: 372901
b: refs/heads/master
c: ab71d36
h: refs/heads/master
i:
  372899: 4ec1dbe
v: v3
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Frederic Weisbecker committed Apr 2, 2013
1 parent 7b2c569 commit 889725f
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Showing 2 changed files with 15 additions and 6 deletions.
2 changes: 1 addition & 1 deletion [refs]
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@@ -1,2 +1,2 @@
---
refs/heads/master: 1c20091e77fc5a9b7d7d905176443b4822a23cdb
refs/heads/master: ab71d36ddb9e60d4ddb28a187718815d38c3c666
19 changes: 14 additions & 5 deletions trunk/kernel/time/Kconfig
Original file line number Diff line number Diff line change
Expand Up @@ -80,11 +80,20 @@ config NO_HZ
busy and when the system is idle.

config NO_HZ_EXTENDED
bool "Full dynticks system"
depends on NO_HZ && RCU_USER_QS && VIRT_CPU_ACCOUNTING_GEN && RCU_NOCB_CPU && SMP
select CONTEXT_TRACKING_FORCE
help
Adaptively try to shutdown the tick whenever possible, even when
bool "Full dynticks system"
# NO_HZ dependency
depends on !ARCH_USES_GETTIMEOFFSET && GENERIC_CLOCKEVENTS
# RCU_USER_QS
depends on HAVE_CONTEXT_TRACKING && SMP
# RCU_NOCB_CPU dependency
depends on TREE_RCU || TREE_PREEMPT_RCU
depends on VIRT_CPU_ACCOUNTING_GEN
select NO_HZ
select RCU_USER_QS
select RCU_NOCB_CPU
select CONTEXT_TRACKING_FORCE
help
Adaptively try to shutdown the tick whenever possible, even when
the CPU is running tasks. Typically this requires running a single
task on the CPU. Chances for running tickless are maximized when
the task mostly runs in userspace and has few kernel activity.
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