A function scheduled with a timer must not exit with a different
preempt count than it was entered. To make helping users running into
the corresponding BUG() easier also print the name of the bad function
not only its address.
[ tglx: Sanitized printk ]
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Cc: johnstul@us.ibm.com
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
lock_map_release(&lockdep_map);
if (preempt_count != preempt_count()) {
- printk(KERN_ERR "huh, entered %p "
- "with preempt_count %08x, exited"
- " with %08x?\n",
- fn, preempt_count,
- preempt_count());
+ printk(KERN_ERR "timer: %pF preempt leak: %08x -> %08x\n",
+ fn, preempt_count, preempt_count());
BUG();
}
}