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authorPaul E. McKenney <paulmck@linux.vnet.ibm.com>2011-02-08 17:14:39 -0800
committerPaul E. McKenney <paulmck@linux.vnet.ibm.com>2011-05-05 23:16:54 -0700
commita00e0d714fbded07a7a2254391ce9ed5a5cb9d82 (patch)
tree7c213dbf1e2561655d07749b6d689027460fb8cc /lib
parent0ee5623f9a6e52df90a78bd21179f8ab370e102e (diff)
downloadlinux-a00e0d714fbded07a7a2254391ce9ed5a5cb9d82.tar.gz
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.debug30
1 files changed, 2 insertions, 28 deletions
diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index c768bcdda1b..93ce6de3300 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