Kernel prepatch 3.5-rc5 [LWN.net]

Kernel prepatch 3.5-rc5

Posted Jul 2, 2012 5:32 UTC (Mon) by theophrastus (guest, #80847)
In reply to: Kernel prepatch 3.5-rc5 by jstultz
Parent article: Kernel prepatch 3.5-rc5

fascinating. thank you very much for your efforts into something that the linux community clearly needed resolved.

how did you decide to make it 10 seconds offset? does that include a substantial padding against unstably reset clocks?
...
/* Calculate the next leap second */
tv.tv_sec += 86400 - tv.tv_sec % 86400;
/* Set the time to be 10 seconds from that time */
tv.tv_sec -= 10;
settimeofday(&tv, NULL);
...

(Log in to post comments)

Kernel prepatch 3.5-rc5

Posted Jul 2, 2012 9:36 UTC (Mon) by benja (guest, #70385) [Link]

Hi, I think your confused: this is a user mode test case to trigger the bug, not the actual kernel fix. IIUC, the code is setting system time 10 seconds before the next day (23:59:50 UTC) then tells the kernel that it needs to insert a leap second, which will be done at 23:59:60. BR.

Kernel prepatch 3.5-rc5

Posted Jul 2, 2012 15:15 UTC (Mon) by theophrastus (guest, #80847) [Link]

you're correct, (i'm incorrect), i read the "proposed fix thread" and 'leap'ed that it was a proposed fix patch. ...shutt'n-up now boss.