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clockevents: remove WARN_ON which was used to gather information 

The issue of the endless reprogramming loop due to a too small
min_delta_ns was fixed with the previous updates of the clock events
code, but we had no information about the spread of this problem. I
added a WARN_ON to get automated information via kerneloops.org and to
get some direct reports, which allowed me to analyse the affected
machines.

The WARN_ON has served its purpose and would be annoying for a release
kernel. Remove it and just keep the information about the increase of
the min_delta_ns value.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Thomas Gleixner 2008-09-09 21:38:57 +02:00
parent 82a28c794f
commit 61c22c34c6
1 changed files with 8 additions and 10 deletions
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18
kernel/time/tick-oneshot.c
View File

@ -43,19 +43,17 @@ int tick_dev_program_event(struct clock_event_device *dev, ktime_t expires,
* and emit a warning.
*/
if (++i > 2) {
printk(KERN_WARNING "CE: __tick_program_event of %s is "
"stuck %llx %llx\n", dev->name ? dev->name : "?",
now.tv64, expires.tv64);
printk(KERN_WARNING
"CE: increasing min_delta_ns %ld to %ld nsec\n",
dev->min_delta_ns, dev->min_delta_ns << 1);
WARN_ON(1);
/* Double the min. delta and try again */
/* Increase the min. delta and try again */
if (!dev->min_delta_ns)
dev->min_delta_ns = 5000;
else
dev->min_delta_ns <<= 1;
dev->min_delta_ns += dev->min_delta_ns >> 1;
printk(KERN_WARNING
"CE: %s increasing min_delta_ns to %lu nsec\n",
dev->name ? dev->name : "?",
dev->min_delta_ns << 1);
i = 0;
}