cvs commit: src/share/man/man9 Makefile timeout.9 src/sys/sys
callout.h src/sys/kern kern_timeout.c
phk at phk.freebsd.dk
Sun Feb 6 22:33:27 PST 2005
In message <200502070247.j172lXIi069498 at repoman.freebsd.org>, Ian Dowse writes:
>iedowse 2005-02-07 02:47:33 UTC
> FreeBSD src repository
> Modified files:
> share/man/man9 Makefile timeout.9
> sys/sys callout.h
> sys/kern kern_timeout.c
> Add a mechanism for associating a mutex with a callout when the
> callout is first initialised, using a new function callout_init_mtx().
> The callout system will acquire this mutex before calling the callout
> function and release it on return.
But can we make softclock() use a two pass algorithm ?
First pass take all the timeouts which have a mutex which we can
get with mtx_lock_try() then in second pass all the rest of the
callouts for this tick ?
This would improve latency for well-written/locked code.
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