kernel/trace/ring_buffer.c: use DIV_ROUND_UP
Instead of open-coding it. Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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Instead of open-coding it. Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NIngo Molnar <mingo@elte.hu>