-static void show(char * str)
-{
- int cpu = smp_processor_id();
-
- printk(KERN_INFO "\n%s, CPU %d:\n", str, cpu);
-}
-
-#define MAXCOUNT 100000000
-
-static inline void wait_on_bh(void)
-{
- int count = MAXCOUNT;
- do {
- if (!--count) {
- show("wait_on_bh");
- count = ~0;
- }
- /* nothing .. wait for the other bh's to go away */
- } while (atomic_read(&global_bh_count) != 0);
-}
-
-/*
- * This is called when we want to synchronize with
- * bottom half handlers. We need to wait until
- * no other CPU is executing any bottom half handler.
- *
- * Don't wait if we're already running in an interrupt
- * context or are inside a bh handler.
- */
-void synchronize_bh(void)
-{
- if (atomic_read(&global_bh_count) && !in_interrupt())
- wait_on_bh();
-}
-