[PATCH 0/2] Use READ_ONCE() and WRITE_ONCE in count_stat_eventual.c

[Junchang Wang <junchangwang@gmail.com>]

Hi Paul,

Please check the updated patch. The first patch is to replace existing
ACCESS_ONCE to new READ/WRITE_ONCE primitives, and the second to protect global
share variable stopflag.

BTW, I didn't see any performance differences between versions using volatile
and READ/WRITE_ONCE primitives on my 16 cores Intel machine. I guess the major
reason is that the sample code is simple such that registers are enough even if
keyword volatile is used.


Junchang Wang (2):
  count_stat_eventual: Switch from ACCESS_ONCE() to
    READ_ONCE()/WRITE_ONCE()
  count_stat_eventual: Add READ_ONCE() to protect global shared variable
    stopflag

 CodeSamples/count/count_stat_eventual.c | 19 ++++++++++---------
 1 file changed, 10 insertions(+), 9 deletions(-)

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2.7.4