tree 2aa803853ac145fedd0d65324d77f64d25e7b3a2
parent 43769f10b4826376cbf4ce17af74a5b4e8dc4fcd
author Steven Rostedt <srostedt@redhat.com> 1234053523 -0500
committer Steven Rostedt <srostedt@redhat.com> 1234053523 -0500

trace: remove deprecated entry->cpu

Impact: fix to prevent developers from using entry->cpu

With the new ring buffer infrastructure, the cpu for the entry is
implicit with which CPU buffer it is on.

The original code use to record the current cpu into the generic
entry header, which can be retrieved by entry->cpu. When the
ring buffer was introduced, the users were convert to use the
the cpu number of which cpu ring buffer was in use (this was passed
to the tracers by the iterator: iter->cpu).

Unfortunately, the cpu item in the entry structure was never removed.
This allowed for developers to use it instead of the proper iter->cpu,
unknowingly, using an uninitialized variable. This was not the fault
of the developers, since it would seem like the logical place to
retrieve the cpu identifier.

This patch removes the cpu item from the entry structure and fixes
all the users that should have been using iter->cpu.

Signed-off-by: Steven Rostedt <srostedt@redhat.com>