rcu: Update stall-warning documentation
authorPaul E. McKenney <paul.mckenney@linaro.org>
Sat, 21 Jan 2012 01:35:55 +0000 (17:35 -0800)
committerPaul E. McKenney <paulmck@linux.vnet.ibm.com>
Tue, 21 Feb 2012 17:03:52 +0000 (09:03 -0800)
commit24cd7fd0eaa0d9f5e197ff77a83b006a86696068
tree9dc9c058272951fa0e3d45dce111ef946ec4f59a
parentc13f3757d0fcdcc2b7fc5d5e38da76b8913e6648
rcu: Update stall-warning documentation

Add documentation of CONFIG_RCU_CPU_STALL_VERBOSE, CONFIG_RCU_CPU_STALL_INFO,
and RCU_STALL_DELAY_DELTA.  Describe multiple stall-warning messages from
a single stall, and the timing of the subsequent messages.  Add headings.
Remove RCU_SECONDS_TILL_STALL_RECHECK because this value is now computed
at runtime from RCU_CPU_STALL_TIMEOUT, so that sysfs changes to the timeout
value now directly affect the RCU_SECONDS_TILL_STALL_RECHECK value.

Signed-off-by: Paul E. McKenney <paul.mckenney@linaro.org>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Documentation/RCU/stallwarn.txt