diff options
Diffstat (limited to 'include/sys/mutex.h')
| -rw-r--r-- | include/sys/mutex.h | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/include/sys/mutex.h b/include/sys/mutex.h index 2db4a7f96..ca76d6ea9 100644 --- a/include/sys/mutex.h +++ b/include/sys/mutex.h @@ -6,6 +6,7 @@ extern "C" { #endif #include <linux/module.h> +#include <linux/hardirq.h> #include <sys/types.h> /* See the "Big Theory Statement" in solaris mutex.c. @@ -65,6 +66,14 @@ static __inline__ void mutex_enter(kmutex_t *mp) { BUG_ON(mp->km_magic != KM_MAGIC); + + if (unlikely(in_atomic() && !current->exit_state)) { + dump_stack(); + printk("Scheduling while atomic: %s/0x%08x/%d\n", + current->comm, preempt_count(), current->pid); + BUG(); + } + down(&mp->km_sem); /* Will check in_atomic() for us */ BUG_ON(mp->km_owner != NULL); mp->km_owner = current; @@ -78,6 +87,14 @@ mutex_tryenter(kmutex_t *mp) int result; BUG_ON(mp->km_magic != KM_MAGIC); + + if (unlikely(in_atomic() && !current->exit_state)) { + dump_stack(); + printk("Scheduling while atomic: %s/0x%08x/%d\n", + current->comm, preempt_count(), current->pid); + BUG(); + } + result = down_trylock(&mp->km_sem); /* returns 0 if acquired */ if (result == 0) { BUG_ON(mp->km_owner != NULL); |