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authorFrederic Weisbecker <fweisbec@gmail.com>2013-02-25 17:25:39 +0100
committerFrederic Weisbecker <fweisbec@gmail.com>2013-03-07 17:10:32 +0100
commit9fbc42eac1f6917081dc3b39922b2f1c57fdff28 (patch)
tree9eef797db037ced359dc5abcc6945cfb8f303a09 /init
parentb22366cd54c6fe05db426f20adb10f461c19ec06 (diff)
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cputime: Dynamically scale cputime for full dynticks accounting
The full dynticks cputime accounting is able to account either using the tick or the context tracking subsystem. This way the housekeeping CPU can keep the low overhead tick based solution. This latter mode has a low jiffies resolution granularity and need to be scaled against CFS precise runtime accounting to improve its result. We are doing this for CONFIG_TICK_CPU_ACCOUNTING, now we also need to expand it to full dynticks accounting dynamic off-case as well. Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: Li Zhong <zhong@linux.vnet.ibm.com> Cc: Kevin Hilman <khilman@linaro.org> Cc: Mats Liljegren <mats.liljegren@enea.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ingo Molnar <mingo@kernel.org> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Namhyung Kim <namhyung.kim@lge.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
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