any real or previous usage of the IRQ-related seqlock calls?

Robert P. J. Day rpjday at crashcourse.ca
Fri May 13 12:01:55 EDT 2011


  i was curious about the level of usage of the various locking
features in the kernel, so i was poking around using
http://lxr.linux.no, and checked out the seqlock-related calls, and
noticed that all of the IRQ-related seqlock calls don't seem to be
used in the current kernel tree at all:

http://lxr.linux.no/linux+v2.6.38/include/linux/seqlock.h#L239

if you select any of those calls starting at "write_seqlock_irqsave",
it doesn't look like any of them are currently used.  do they simply
have no current value?  just curious.

rday

-- 

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Robert P. J. Day                                 Ottawa, Ontario, CANADA
                        http://crashcourse.ca

Twitter:                                       http://twitter.com/rpjday
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