that can help debug the scheduler. The runtime overhead of this
option is minimal.
+config SCHED_INFO
+ bool
+ default n
+
config SCHEDSTATS
bool "Collect scheduler statistics"
depends on DEBUG_KERNEL && PROC_FS
+ select SCHED_INFO
help
If you say Y here, additional code will be inserted into the
scheduler and related routines to collect statistics about
RCU grace period persists, additional CPU stall warnings are
printed at more widely spaced intervals.
-config RCU_CPU_STALL_INFO
- bool "Print additional diagnostics on RCU CPU stall"
- depends on (TREE_RCU || PREEMPT_RCU) && DEBUG_KERNEL
- default y
- help
- For each stalled CPU that is aware of the current RCU grace
- period, print out additional per-CPU diagnostic information
- regarding scheduling-clock ticks, idle state, and,
- for RCU_FAST_NO_HZ kernels, idle-entry state.
-
- Say N if you are unsure.
-
- Say Y if you want to enable such diagnostics.
-
config RCU_TRACE
bool "Enable tracing for RCU"
depends on DEBUG_KERNEL
Say N if you are unsure.
config RCU_EQS_DEBUG
- bool "Use this when adding any sort of NO_HZ support to your arch"
+ bool "Provide debugging asserts for adding NO_HZ support to an arch"
depends on DEBUG_KERNEL
help
This option provides consistency checks in RCU's handling of