summaryrefslogtreecommitdiffstats
path: root/include/linux/rcupdate.h
diff options
context:
space:
mode:
authorFrederic Weisbecker <fweisbec@gmail.com>2011-10-07 18:22:01 +0200
committerPaul E. McKenney <paulmck@linux.vnet.ibm.com>2011-12-11 10:31:30 -0800
commit0464e937485f15d2add78e3b0f498469f4e6600d (patch)
tree4007c0643436591850ac8bc87e03601afb8f1920 /include/linux/rcupdate.h
parente6b80a3b0994ea6c3d876d72464f2debbfcfeb05 (diff)
rcu: Inform the user about extended quiescent state on PROVE_RCU warning
Inform the user if an RCU usage error is detected by lockdep while in an extended quiescent state (in this case, the RCU-free window in idle). This is accomplished by adding a line to the RCU lockdep splat indicating whether or not the splat occurred in extended quiescent state. Uses of RCU from within extended quiescent state mode are totally ignored by RCU, hence the importance of this diagnostic. Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Lai Jiangshan <laijs@cn.fujitsu.com> Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Diffstat (limited to 'include/linux/rcupdate.h')
0 files changed, 0 insertions, 0 deletions