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author | Jonathan Corbet <corbet@lwn.net> | 2008-05-18 22:27:41 +0200 |
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committer | Jonathan Corbet <corbet@lwn.net> | 2008-06-20 22:05:53 +0200 |
commit | 0b2806768899dba5967bcd4a3b93eaed9a1dc4f3 (patch) | |
tree | c9e7762d9b236883f4a23a170919317a6e7c93c7 /drivers/scsi/megaraid | |
parent | videodev: BKL pushdown (diff) | |
download | linux-0b2806768899dba5967bcd4a3b93eaed9a1dc4f3.tar.xz linux-0b2806768899dba5967bcd4a3b93eaed9a1dc4f3.zip |
Add cycle_kernel_lock()
A number of driver functions are so obviously trivial that they do not need
the big kernel lock - at least not overtly. It turns out that the
acquisition of the BKL in driver open() functions can perform a sort of
poor-hacker's serialization function, delaying the open operation until the
driver is certain to have completed its initialization. Add a simple
cycle_kernel_lock() function for these cases to make it clear that there is
no need to *hold* the BKL, just to be sure that we can acquire it.
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Diffstat (limited to 'drivers/scsi/megaraid')
0 files changed, 0 insertions, 0 deletions