https://github.com/torvalds/linux
Revision 8ffeb9b0e6369135bf03a073514f571ef10606b9 authored by Chuansheng Liu on 27 November 2012, 00:29:54 UTC, committed by Linus Torvalds on 27 November 2012, 01:41:24 UTC
In get_sample_period(), unsigned long is not enough:

  watchdog_thresh * 2 * (NSEC_PER_SEC / 5)

case1:
  watchdog_thresh is 10 by default, the sample value will be: 0xEE6B2800

case2:
 set watchdog_thresh is 20, the sample value will be: 0x1 DCD6 5000

In case2, we need use u64 to express the sample period.  Otherwise,
changing the threshold thru proc often can not be successful.

Signed-off-by: liu chuansheng <chuansheng.liu@intel.com>
Acked-by: Don Zickus <dzickus@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
1 parent 4eff96d
History
Tip revision: 8ffeb9b0e6369135bf03a073514f571ef10606b9 authored by Chuansheng Liu on 27 November 2012, 00:29:54 UTC
watchdog: using u64 in get_sample_period()
Tip revision: 8ffeb9b
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