Remove the "single task" statement from CONFIG_NO_HZ_FULL title. The constraint can be invalidated when tasks from other sched classes than SCHED_FAIR are running. Moreover it's possible that hrtick join the party in the future.
Also add a line about the dependency on SMP. Reported-by: Ingo Molnar <[email protected]> Signed-off-by: Frederic Weisbecker <[email protected]> Cc: Chris Metcalf <[email protected]> Cc: Christoph Lameter <[email protected]> Cc: Geoff Levand <[email protected]> Cc: Gilad Ben Yossef <[email protected]> Cc: Hakan Akkan <[email protected]> Cc: Ingo Molnar <[email protected]> Cc: Kevin Hilman <[email protected]> Cc: Li Zhong <[email protected]> Cc: Paul E. McKenney <[email protected]> Cc: Paul Gortmaker <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Steven Rostedt <[email protected]> Cc: Thomas Gleixner <[email protected]> --- kernel/time/Kconfig | 8 +++++--- 1 files changed, 5 insertions(+), 3 deletions(-) diff --git a/kernel/time/Kconfig b/kernel/time/Kconfig index 3b68322..358d601 100644 --- a/kernel/time/Kconfig +++ b/kernel/time/Kconfig @@ -97,11 +97,13 @@ config NO_HZ_IDLE Most of the time you want to say Y here. config NO_HZ_FULL - bool "Full dynticks system (tickless single task)" + bool "Full dynticks system (tickless)" # NO_HZ_COMMON dependency depends on !ARCH_USES_GETTIMEOFFSET && GENERIC_CLOCKEVENTS - # RCU_USER_QS - depends on HAVE_CONTEXT_TRACKING && SMP + # We need at least one periodic CPU for timekeeping + depends on SMP + # RCU_USER_QS dependency + depends on HAVE_CONTEXT_TRACKING # RCU_NOCB_CPU dependency depends on TREE_RCU || TREE_PREEMPT_RCU depends on VIRT_CPU_ACCOUNTING_GEN -- 1.7.5.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
