diff options
| author | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2010-01-04 16:04:01 -0800 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2010-01-13 09:06:06 +0100 |
| commit | cba8244a0f1c277b6b1e48ed6504fa434119e24d (patch) | |
| tree | becfa7d6f653774f72f411002626e791243e5057 /kernel/rcutree.c | |
| parent | f9094d8e5587cf21091a9516628147c0b55e4264 (diff) | |
| download | kernel_samsung_smdk4412-cba8244a0f1c277b6b1e48ed6504fa434119e24d.zip kernel_samsung_smdk4412-cba8244a0f1c277b6b1e48ed6504fa434119e24d.tar.gz kernel_samsung_smdk4412-cba8244a0f1c277b6b1e48ed6504fa434119e24d.tar.bz2 | |
rcu: Add debug check for too many rcu_read_unlock()
TREE_PREEMPT_RCU maintains an rcu_read_lock_nesting counter in
the task structure, which happens to be a signed int. So this
patch adds a check for this counter being negative at the end of
__rcu_read_unlock(). This check is under CONFIG_PROVE_LOCKING,
so can be thought of as being part of lockdep.
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: laijs@cn.fujitsu.com
Cc: dipankar@in.ibm.com
Cc: mathieu.desnoyers@polymtl.ca
Cc: josh@joshtriplett.org
Cc: dvhltc@us.ibm.com
Cc: niv@us.ibm.com
Cc: peterz@infradead.org
Cc: rostedt@goodmis.org
Cc: Valdis.Kletnieks@vt.edu
Cc: dhowells@redhat.com
LKML-Reference: <12626498423064-git-send-email->
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel/rcutree.c')
0 files changed, 0 insertions, 0 deletions