clocksource: Restructure clocksource struct members
Group the hot path members of struct clocksource together so we have a better cache line footprint. Make it cacheline aligned. Signed-off-by: NThomas Gleixner <tglx@linutronix.de> Cc: John Stultz <john.stultz@linaro.org> Cc: Eric Dumazet <eric.dumazet@gmail.com> Reviewed-by: NIngo Molnar <mingo@elte.hu> Link: http://lkml.kernel.org/r/%3C20110518210136.003081882%40linutronix.de%3E
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