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-rw-r--r--kernel/softirq.c11
1 files changed, 11 insertions, 0 deletions
diff --git a/kernel/softirq.c b/kernel/softirq.c
index 82e32aadedd..1cf1e2f2c40 100644
--- a/kernel/softirq.c
+++ b/kernel/softirq.c
@@ -205,7 +205,18 @@ restart:
do {
if (pending & 1) {
+ int prev_count = preempt_count();
+
h->action(h);
+
+ if (unlikely(prev_count != preempt_count())) {
+ printk(KERN_ERR "huh, entered sotfirq %ld %p"
+ "with preempt_count %08x,"
+ " exited with %08x?\n", h - softirq_vec,
+ h->action, prev_count, preempt_count());
+ preempt_count() = prev_count;
+ }
+
rcu_bh_qsctr_inc(cpu);
}
h++;