* Canonical ring-buffer code : SMP, single-reader/writer
@ 2010-10-17 21:50 Tom Brown
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From: Tom Brown @ 2010-10-17 21:50 UTC (permalink / raw)
To: LKML
Does anyone happen to know of any good example code that I could use in
a driver for a simple single-reader, single-writer, ring buffer, on an
SMP system?
My own code doesn't use any locks, but I'm concerned that it may be
flaky. It's running on an 8-core processor, and I'm worried that I may
be seeing SMP locking issues which I don't understand because the driver
is on one core, while the user is on another core.
In my case, the producer is the driver, and the consumer is the user. I
could just lock all the driver writes to the buffer and the driver's
update of the shared 'last written' pointer, but that seems a really
poor design.
Thanks -
Tom
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2010-10-17 21:50 Canonical ring-buffer code : SMP, single-reader/writer Tom Brown
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