Messages in this thread Patch in this message | | | Date | Thu, 29 Nov 2001 01:56:29 -0500 | From | Michael Arras <> | Subject | [PATCH] Fix for sys_nanosleep() in 2.4.16 |
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Greetings,
For many of us, the kernel thread scheduling resolution is 10ms (see getitimer(2)). By adding 1 jiffy to the time to sleep in sys_nanosleep(), threads are sleeping 10ms too long. timespec_to_jiffies() does a good job at returning the appropriate number of jiffies to sleep. There is no need to add one for good measure.
Mike Arras mkarras110@yahoo.com
diff -urN linux-2.4.16/kernel/timer.c linux/kernel/timer.c --- linux-2.4.16/kernel/timer.c Mon Oct 8 13:41:41 2001 +++ linux/kernel/timer.c Wed Nov 28 00:23:15 2001 @@ -825,7 +825,7 @@ return 0; } - expire = timespec_to_jiffies(&t) + (t.tv_sec || t.tv_nsec); + expire = timespec_to_jiffies(&t); current->state = TASK_INTERRUPTIBLE; expire = schedule_timeout(expire); - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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