|| ||Christoph Lameter <email@example.com> |
|| ||Mathieu Desnoyers <firstname.lastname@example.org> |
|| ||[RFC local_t removal V1 0/4] Remove local_t |
|| ||Tue, 05 Jan 2010 16:04:17 -0600|
|| ||Tejun Heo <email@example.com>|
|| ||Article, Thread
Current -next has only the trace subsystem left as a user of local_t
Tracing uses local_t for per cpu safe atomic operations in the form
of cmpxchg and additions. We already have a cmpxchg_local but no "local"
form of addition.
The patchset introduces a similar local primitive add_local() and then
uses cmpxchg_local() and add_local() to remove local_t use from the
The last patch removes local_t support from the kernel tree.
The support for add_local() is pretty basic. We can add more
fancy inc/dec variants and more optimization in the next
revision of the patchset.
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