ring-buffer: remove unneeded get_online_cpus

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Impact: speed up and remove possible races

The get_online_cpus was added to the ring buffer because the original
design would free the ring buffer on a CPU that was being taken
off line. The final design kept the ring buffer around even when the
CPU was taken off line. This is to allow a user to still read the
information on that ring buffer.

Most of the get_online_cpus are no longer needed since the ring buffer will
not disappear from the use cases.

Reported-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Signed-off-by: Steven Rostedt <srostedt@redhat.com>

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This commit is contained in:

Steven Rostedt 2009-03-12 13:13:49 -04:00

parent 59222efe2d

commit 8aabee573d

1 changed files with 14 additions and 76 deletions

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90

kernel/trace/ring_buffer.c

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