ring-buffer: move page indexes into page headers

Browse source

Remove the global head and tail indexes and move them into the
page header. Each page will now keep track of where the last
write and read was made. We also rename the head and tail to read
and write for better clarification.

This patch is needed for future enhancements to move the ring buffer
to a lockless solution.

Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

...

This commit is contained in:

Steven Rostedt 2008-10-04 02:00:58 -04:00 • committed by Ingo Molnar

parent 097d036a2f

commit 6f807acd27

1 changed files with 41 additions and 34 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

75

kernel/trace/ring_buffer.c

View file