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authormav <mav@FreeBSD.org>2013-03-06 22:40:47 +0000
committermav <mav@FreeBSD.org>2013-03-06 22:40:47 +0000
commit5dfd8a110a3e6121977586541b839200faef91da (patch)
tree913457439d483236c0243c4ac9d791ca3a1489ea /sys/contrib/altq
parent128087cd6d32f10058a48ef2394e67d1182f0688 (diff)
downloadFreeBSD-src-5dfd8a110a3e6121977586541b839200faef91da.zip
FreeBSD-src-5dfd8a110a3e6121977586541b839200faef91da.tar.gz
Reduce minimal time intervals of setitimer(2) from 1/HZ to 1/(16*HZ) by
using callout_reset_sbt() instead of callout_reset(). We can't remove lower limit completely in this case because of significant processing overhead, caused by unability to use direct callout execution due to using process mutex in callout handler for sending SEGALRM signal. With support of periodic events that would allow unprivileged user to abuse the system. Reviewed by: davide
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