Messages in this thread | | | Date | Wed, 7 Mar 2007 16:03:36 -0500 | From | "Lee Revell" <> | Subject | Re: Sleeping thread not receive signal until it wakes up |
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On 3/7/07, linux-os (Dick Johnson) <linux-os@analogic.com> wrote: > Interruptible_sleep_on is interruptible, but for your task to > actually be awakened and your alarm handler to get some CPU, > it needs to be scheduled. If the BKL (big kernel lock) is > held, it won't be scheduled until it is released.
You can schedule while holding the BKL and it will be dropped and reacquired.
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