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| author | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2011-02-08 17:14:39 -0800 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2011-05-05 23:16:54 -0700 |
| commit | a00e0d714fbded07a7a2254391ce9ed5a5cb9d82 (patch) | |
| tree | 7c213dbf1e2561655d07749b6d689027460fb8cc /lib | |
| parent | 0ee5623f9a6e52df90a78bd21179f8ab370e102e (diff) | |
| download | lwn-a00e0d714fbded07a7a2254391ce9ed5a5cb9d82.tar.gz lwn-a00e0d714fbded07a7a2254391ce9ed5a5cb9d82.zip | |
rcu: Remove conditional compilation for RCU CPU stall warnings
The RCU CPU stall warnings can now be controlled using the
rcu_cpu_stall_suppress boot-time parameter or via the same parameter
from sysfs. There is therefore no longer any reason to have
kernel config parameters for this feature. This commit therefore
removes the RCU_CPU_STALL_DETECTOR and RCU_CPU_STALL_DETECTOR_RUNNABLE
kernel config parameters. The RCU_CPU_STALL_TIMEOUT parameter remains
to allow the timeout to be tuned and the RCU_CPU_STALL_VERBOSE parameter
remains to allow task-stall information to be suppressed if desired.
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/Kconfig.debug | 30 |
1 files changed, 2 insertions, 28 deletions
diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug index c768bcdda1b7..93ce6de3300d 100644 --- a/lib/Kconfig.debug +++ b/lib/Kconfig.debug @@ -875,22 +875,9 @@ config RCU_TORTURE_TEST_RUNNABLE Say N here if you want the RCU torture tests to start only after being manually enabled via /proc. -config RCU_CPU_STALL_DETECTOR - bool "Check for stalled CPUs delaying RCU grace periods" - depends on TREE_RCU || TREE_PREEMPT_RCU - default y - help - This option causes RCU to printk information on which - CPUs are delaying the current grace period, but only when - the grace period extends for excessive time periods. - - Say N if you want to disable such checks. - - Say Y if you are unsure. - config RCU_CPU_STALL_TIMEOUT int "RCU CPU stall timeout in seconds" - depends on RCU_CPU_STALL_DETECTOR + depends on TREE_RCU || TREE_PREEMPT_RCU range 3 300 default 60 help @@ -899,22 +886,9 @@ config RCU_CPU_STALL_TIMEOUT RCU grace period persists, additional CPU stall warnings are printed at more widely spaced intervals. -config RCU_CPU_STALL_DETECTOR_RUNNABLE - bool "RCU CPU stall checking starts automatically at boot" - depends on RCU_CPU_STALL_DETECTOR - default y - help - If set, start checking for RCU CPU stalls immediately on - boot. Otherwise, RCU CPU stall checking must be manually - enabled. - - Say Y if you are unsure. - - Say N if you wish to suppress RCU CPU stall checking during boot. - config RCU_CPU_STALL_VERBOSE bool "Print additional per-task information for RCU_CPU_STALL_DETECTOR" - depends on RCU_CPU_STALL_DETECTOR && TREE_PREEMPT_RCU + depends on TREE_PREEMPT_RCU default y help This option causes RCU to printk detailed per-task information |